/**
* @brief ADC configuration.
* @param None
* @retval None
*/
static void ADC_Config(void)
{
__IO uint16_t calibration_value = 0x00;
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure the ADC clock */
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div1);
/* Enable ADC1 clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
/* Setup SysTick Timer for 1 µsec interrupts */
if (SysTick_Config(SystemCoreClock / 1000000))
{
/* Capture error */
while (1)
{}
}
/* ADC Channel3 configuration */
/* GPIO PA0 configuration is done within OPAMP_Config function
as the ADC channel3 is the OPAMP1 output*/
ADC_StructInit(&ADC_InitStructure);
/* Calibration procedure */
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
/* Insert delay equal to 10 µs */
Delay(10);
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET );
calibration_value = ADC_GetCalibrationValue(ADC1);
/* Configure the ADC1 in continuous mode */
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel3 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 1, ADC_SampleTime_1Cycles5);
/* Enable EOC interrupt */
ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
/* Enable ADC1 IRQ */
NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* wait for ADRDY */
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY) == RESET);
/* ADC1 start Conversion */
ADC_StartConversion(ADC1);
}
void AdcMcuFormat( Adc_t *obj, AdcResolution AdcRes, AdcNumConversion AdcNumConv, AdcTriggerConv AdcTrig, AdcDataAlignement AdcDataAlig )
{
/* Enable The HSI (16Mhz) */
RCC_HSICmd( ENABLE );
/* Check that HSI oscillator is ready */
while(RCC_GetFlagStatus( RCC_FLAG_HSIRDY ) == RESET );
RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, ENABLE );
// Setup lowest possible prescaler in oder to be able to operate
// at the whole Vdd rage 1.6V to 3.6V
ADC_CommonInitTypeDef Adc_CommInitStructure;
Adc_CommInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
ADC_CommonInit( &Adc_CommInitStructure );
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit( &ADC_InitStructure );
if( AdcRes == ADC_12_BIT )
{
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
}
else if( AdcRes == ADC_10_BIT )
{
ADC_InitStructure.ADC_Resolution = ADC_Resolution_10b;
}
else if(AdcRes == ADC_8_BIT )
{
ADC_InitStructure.ADC_Resolution = ADC_Resolution_8b;
}
else if(AdcRes == ADC_6_BIT )
{
ADC_InitStructure.ADC_Resolution = ADC_Resolution_6b;
}
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
if( AdcNumConv == SINGLE_CONVERSION )
{
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
}
else
{
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
}
if( AdcTrig == CONVERT_MANUAL_TRIG )
{
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
}
else if( AdcTrig == CONVERT_RISING_EDGE )
{
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
}
else if( AdcTrig == CONVERT_FALLING_EDGE )
{
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Falling;
}
else
{
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_RisingFalling;
}
if( AdcDataAlig == DATA_RIGHT_ALIGNED )
{
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
}
else
{
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Left;
}
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init( ADC1, &ADC_InitStructure );
ADC_DelaySelectionConfig( ADC1, ADC_DelayLength_Freeze );
RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, DISABLE );
RCC_HSICmd( DISABLE );
}
/**
* Configure analogue inputs using ADC3 and DMA2 stream 0
*/
void adcSetupDMA(void* dma){
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t channels = NOF_ADC_VALUES;
DMA_DeInit(DMA2_Stream0);
DMA_StructInit(&DMA_InitStructure);
/* Enable required clocks */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC3, ENABLE);
/* DMA2 Stream0 channel0 configuration */
DMA_InitStructure.DMA_Channel = DMA_Channel_2;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&ADC3->DR);
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)dma;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = channels;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream0, ENABLE);
/* Configure ADC pins as analog inputs */
configureAnalogInput(GPIOC, GPIO_Pin_0);
configureAnalogInput(GPIOC, GPIO_Pin_1);
configureAnalogInput(GPIOC, GPIO_Pin_2);
configureAnalogInput(GPIOC, GPIO_Pin_3);
#if defined EXPRESSION_PEDAL
/* Configure expression pedal pin (PA2 or PA3) as analog input */
configureAnalogInput(EXPRESSION_PEDAL_RING_PORT, EXPRESSION_PEDAL_RING_PIN);
/* configureAnalogInput(GPIOA, GPIO_Pin_3); */
#endif
ADC_DeInit();
/* ADC Common Init */
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
/* ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_12Cycles; */
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
/* ADC3 Init */
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = channels;
ADC_Init(ADC3, &ADC_InitStructure);
/* uint8_t sampletime = ADC_SampleTime_3Cycles; */
/* uint8_t sampletime = ADC_SampleTime_15Cycles; */
uint8_t sampletime = ADC_SampleTime_84Cycles;
/* ADC3 regular channel configuration */
/* Control Pots A-D, PC0-3 */
ADC_RegularChannelConfig(ADC3, ADC_Channel_10, 1, sampletime);
ADC_RegularChannelConfig(ADC3, ADC_Channel_11, 2, sampletime);
ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 3, sampletime);
ADC_RegularChannelConfig(ADC3, ADC_Channel_13, 4, sampletime);
#if defined EXPRESSION_PEDAL
/* Expression Pedal Input PA2/3, ADC123_IN2-3 */
ADC_RegularChannelConfig(ADC3, EXPRESSION_PEDAL_RING_CHANNEL, 5, sampletime);
/* ADC_RegularChannelConfig(ADC3, ADC_Channel_3, 5, sampletime); */
#endif
/* Enable DMA request after last transfer (Single-ADC mode) */
ADC_DMARequestAfterLastTransferCmd(ADC3, ENABLE);
/* Enable ADC3 DMA */
ADC_DMACmd(ADC3, ENABLE);
/* Enable ADC3 */
ADC_Cmd(ADC3, ENABLE);
/* Start ADC3 Software Conversion */
ADC_SoftwareStartConv(ADC3);
}
void adcInit(drv_adc_config_t *init)
{
#if !defined(VBAT_ADC_PIN) && !defined(EXTERNAL1_ADC_PIN) && !defined(RSSI_ADC_PIN) && !defined(CURRENT_METER_ADC_PIN)
UNUSED(init);
#endif
uint8_t configuredAdcChannels = 0;
memset(&adcConfig, 0, sizeof(adcConfig));
#ifdef VBAT_ADC_PIN
if (init->enableVBat) {
adcConfig[ADC_BATTERY].tag = IO_TAG(VBAT_ADC_PIN);
}
#endif
#ifdef RSSI_ADC_PIN
if (init->enableRSSI) {
adcConfig[ADC_RSSI].tag = IO_TAG(RSSI_ADC_PIN);
}
#endif
#ifdef EXTERNAL1_ADC_PIN
if (init->enableExternal1) {
adcConfig[ADC_EXTERNAL1].tag = IO_TAG(EXTERNAL1_ADC_PIN);
}
#endif
#ifdef CURRENT_METER_ADC_PIN
if (init->enableCurrentMeter) {
adcConfig[ADC_CURRENT].tag = IO_TAG(CURRENT_METER_ADC_PIN);
}
#endif
ADCDevice device = adcDeviceByInstance(ADC_INSTANCE);
if (device == ADCINVALID)
return;
const adcDevice_t adc = adcHardware[device];
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcConfig[i].tag)
continue;
IOInit(IOGetByTag(adcConfig[i].tag), OWNER_ADC, RESOURCE_ADC_BATTERY+i, 0);
IOConfigGPIO(IOGetByTag(adcConfig[i].tag), IO_CONFIG(GPIO_Mode_AIN, 0));
adcConfig[i].adcChannel = adcChannelByTag(adcConfig[i].tag);
adcConfig[i].dmaIndex = configuredAdcChannels++;
adcConfig[i].sampleTime = ADC_SampleTime_239Cycles5;
adcConfig[i].enabled = true;
}
RCC_ADCCLKConfig(RCC_PCLK2_Div8); // 9MHz from 72MHz APB2 clock(HSE), 8MHz from 64MHz (HSI)
RCC_ClockCmd(adc.rccADC, ENABLE);
RCC_ClockCmd(adc.rccDMA, ENABLE);
DMA_DeInit(adc.DMAy_Channelx);
DMA_InitTypeDef DMA_InitStructure;
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&adc.ADCx->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = configuredAdcChannels;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = configuredAdcChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(adc.DMAy_Channelx, &DMA_InitStructure);
DMA_Cmd(adc.DMAy_Channelx, ENABLE);
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = configuredAdcChannels > 1 ? ENABLE : DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = configuredAdcChannels;
ADC_Init(adc.ADCx, &ADC_InitStructure);
uint8_t rank = 1;
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(adc.ADCx, adcConfig[i].adcChannel, rank++, adcConfig[i].sampleTime);
}
ADC_DMACmd(adc.ADCx, ENABLE);
ADC_Cmd(adc.ADCx, ENABLE);
ADC_ResetCalibration(adc.ADCx);
while (ADC_GetResetCalibrationStatus(adc.ADCx));
ADC_StartCalibration(adc.ADCx);
while (ADC_GetCalibrationStatus(adc.ADCx));
ADC_SoftwareStartConvCmd(adc.ADCx, ENABLE);
}
void adcInit(adcConfig_t *config)
{
uint8_t configuredAdcChannels = 0;
memset(&adcOperatingConfig, 0, sizeof(adcOperatingConfig));
if (config->vbat.enabled) {
adcOperatingConfig[ADC_BATTERY].tag = config->vbat.ioTag;
}
if (config->rssi.enabled) {
adcOperatingConfig[ADC_RSSI].tag = config->rssi.ioTag; //RSSI_ADC_CHANNEL;
}
if (config->external1.enabled) {
adcOperatingConfig[ADC_EXTERNAL1].tag = config->external1.ioTag; //EXTERNAL1_ADC_CHANNEL;
}
if (config->currentMeter.enabled) {
adcOperatingConfig[ADC_CURRENT].tag = config->currentMeter.ioTag; //CURRENT_METER_ADC_CHANNEL;
}
ADCDevice device = adcDeviceByInstance(ADC_INSTANCE);
if (device == ADCINVALID)
return;
const adcDevice_t adc = adcHardware[device];
bool adcActive = false;
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcOperatingConfig[i].tag)
continue;
adcActive = true;
IOInit(IOGetByTag(adcOperatingConfig[i].tag), OWNER_ADC_BATT + i, 0);
IOConfigGPIO(IOGetByTag(adcOperatingConfig[i].tag), IO_CONFIG(GPIO_Mode_AIN, 0));
adcOperatingConfig[i].adcChannel = adcChannelByTag(adcOperatingConfig[i].tag);
adcOperatingConfig[i].dmaIndex = configuredAdcChannels++;
adcOperatingConfig[i].sampleTime = ADC_SampleTime_239Cycles5;
adcOperatingConfig[i].enabled = true;
}
if (!adcActive) {
return;
}
RCC_ADCCLKConfig(RCC_PCLK2_Div8); // 9MHz from 72MHz APB2 clock(HSE), 8MHz from 64MHz (HSI)
RCC_ClockCmd(adc.rccADC, ENABLE);
dmaInit(dmaGetIdentifier(adc.DMAy_Channelx), OWNER_ADC, 0);
DMA_DeInit(adc.DMAy_Channelx);
DMA_InitTypeDef DMA_InitStructure;
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&adc.ADCx->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = configuredAdcChannels;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = configuredAdcChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(adc.DMAy_Channelx, &DMA_InitStructure);
DMA_Cmd(adc.DMAy_Channelx, ENABLE);
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = configuredAdcChannels > 1 ? ENABLE : DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = configuredAdcChannels;
ADC_Init(adc.ADCx, &ADC_InitStructure);
uint8_t rank = 1;
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcOperatingConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(adc.ADCx, adcOperatingConfig[i].adcChannel, rank++, adcOperatingConfig[i].sampleTime);
}
ADC_DMACmd(adc.ADCx, ENABLE);
ADC_Cmd(adc.ADCx, ENABLE);
ADC_ResetCalibration(adc.ADCx);
while (ADC_GetResetCalibrationStatus(adc.ADCx));
ADC_StartCalibration(adc.ADCx);
while (ADC_GetCalibrationStatus(adc.ADCx));
ADC_SoftwareStartConvCmd(adc.ADCx, ENABLE);
}
void init_ADC(void){
//__IO uint16_t ADC1ConvertedVoltage[2];
ADC_InitTypeDef ADC_InitStructure; //Structure for adc configuration
ADC_CommonInitTypeDef ADC_CommonInitStructure;
GPIO_InitTypeDef GPIO_initStructre; //Structure for analog input pin
ADC_StructInit(&ADC_InitStructure);
ADC_CommonStructInit(&ADC_CommonInitStructure);
//Clock configuration
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); //The ADC1 is connected the APB2 peripheral bus thus we will use its clock source
RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_GPIOCEN | RCC_AHB1Periph_DMA2, ENABLE); //Clock for the ADC port!! Do not forget about this one ;)
//Analog pin configuration
GPIO_StructInit(&GPIO_initStructre);
GPIO_initStructre.GPIO_Pin = JOYSTICK_X_AXIS_PIN | JOYSTICK_Y_AXIS_PIN; //The channel 10 is connected to PC0; PC1 if multiple channels
GPIO_initStructre.GPIO_Mode = GPIO_Mode_AN; //The PC0 pin is configured in analog mode
GPIO_initStructre.GPIO_PuPd = GPIO_PuPd_NOPULL; //We don't need any pull up or pull down
GPIO_Init(JOYSTICK_PORT, &GPIO_initStructre); //Affecting the port with the initialization structure configuration
//ADC structure configuration
//ADC_DeInit();
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //data converted will be shifted to right
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b; //Input voltage is converted into a 12bit number giving a maximum value of 4095
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //the conversion is continuous, the input data is converted more than once
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1; // conversion is synchronous with TIM1 and CC1 (use timer 1 capture/compare channel 1 for external trigger)
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None; //no trigger for conversion
ADC_InitStructure.ADC_NbrOfConversion = 2; //Number of used ADC channels;
ADC_InitStructure.ADC_ScanConvMode = ENABLE; //The scan is configured in muptiple channels
ADC_Init(ADC1, &ADC_InitStructure); //Initialize ADC with the previous configuration
DMA_InitTypeDef DMA_InitStructure; //Structure for DMA configuration
DMA_DeInit(DMA2_Stream4);
DMA_StructInit(&DMA_InitStructure);
//DMA2 Channel0 stream0 configuration
DMA_InitStructure.DMA_Channel = DMA_Channel_0; //DMA channel
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR; //DMA address
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //u32 //Peripheral Data Size 32bit (DMA_{PeripheralDataSize_HalfWord 16bit})
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC1ConvertedVoltage; //buffer address
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;//傳輸方向單向
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//DMA Memory Data Size 32bit
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //接收一次數據後，目標內存地址是否後移--重要概念，用來采集多個數據的，多通道的時候需要使能它
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//接收一次數據後，設備地址是否後移
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//轉換模式，循環緩存模式，常用
DMA_InitStructure.DMA_Priority = DMA_Priority_High;//DMA優先級，高
DMA_InitStructure.DMA_BufferSize = 2;//DMA緩存大小，1*2個
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = 0;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
//send values to DMA registers
DMA_Init(DMA2_Stream4, &DMA_InitStructure);
// Enable DMA2 Channel Transfer Complete interrupt
DMA_ITConfig(DMA2_Stream4, DMA_IT_TC, ENABLE);
//Enable DMA1 Channel transfer
DMA_Cmd(DMA2_Stream4, ENABLE);
//Select the channel to be read from
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_144Cycles); //// use channel 10 from ADC1, with sample time 144 cycles
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 2, ADC_SampleTime_144Cycles); //ADC1 multiple channels (channel 11)
//Enable DMA request after last transfer (Single-ADC mode)
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
//Enable using ADC_DMA
ADC_DMACmd(ADC1, ENABLE);
//Enable ADC conversion
ADC_Cmd(ADC1, ENABLE);
}
/**
* @brief Initialise the stick scanning.
* @note Starts the ADC continuous sampling.
* @param None
* @retval None
*/
void sticks_init(void) {
ADC_InitTypeDef adcInit;
DMA_InitTypeDef dmaInit;
GPIO_InitTypeDef gpioInit;
NVIC_InitTypeDef nvicInit;
TIM_TimeBaseInitTypeDef timInit;
TIM_OCInitTypeDef timOC;
int i;
// Enable the ADC and DMA clocks
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);
gpioInit.GPIO_Speed = GPIO_Speed_50MHz;
gpioInit.GPIO_Pin = 0x7F;
gpioInit.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &gpioInit);
ADC_DeInit(ADC1);
// Setup the ADC init structure
ADC_StructInit(&adcInit);
adcInit.ADC_ContinuousConvMode = DISABLE;
adcInit.ADC_ScanConvMode = ENABLE;
adcInit.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T4_CC4;
adcInit.ADC_NbrOfChannel = STICK_ADC_CHANNELS;
ADC_Init(ADC1, &adcInit);
// Setup the regular channel cycle
for (i = 0; i < STICK_ADC_CHANNELS; ++i) {
ADC_RegularChannelConfig(ADC1, ADC_Channel_0 + i, i + 1,
ADC_SampleTime_239Cycles5);
}
// Enable ADC1 + DMA
ADC_Cmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
// Calibrate ADC1
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1))
;
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1))
;
nvicInit.NVIC_IRQChannel = DMA1_Channel1_IRQn;
nvicInit.NVIC_IRQChannelSubPriority = 1;
nvicInit.NVIC_IRQChannelPreemptionPriority = 1;
nvicInit.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvicInit);
// DMA Configuration
DMA_DeInit(DMA1_Channel1);
DMA_StructInit(&dmaInit);
dmaInit.DMA_PeripheralBaseAddr = (uint32_t) &ADC1->DR;
dmaInit.DMA_MemoryBaseAddr = (uint32_t) &adc_data[0];
dmaInit.DMA_DIR = DMA_DIR_PeripheralSRC;
dmaInit.DMA_BufferSize = STICK_ADC_CHANNELS;
dmaInit.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
dmaInit.DMA_MemoryInc = DMA_MemoryInc_Enable;
dmaInit.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
dmaInit.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
dmaInit.DMA_Mode = DMA_Mode_Circular;
dmaInit.DMA_Priority = DMA_Priority_VeryHigh;
dmaInit.DMA_M2M = DMA_M2M_Disable;
// Configure and enable the DMA
DMA_Init(DMA1_Channel1, &dmaInit);
DMA_Cmd(DMA1_Channel1, ENABLE);
DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
// TIM4 OC4 is ADC conversion trigger
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
TIM_DeInit(TIM4);
/* TIM4 init */
TIM_TimeBaseStructInit(&timInit);
timInit.TIM_Period = 20-1; /* 20 ms */
timInit.TIM_Prescaler = SystemCoreClock/1000 - 1; /* 1ms */
timInit.TIM_ClockDivision = 0x0;
timInit.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM4, &timInit);
/* TIM4 OC4 configuration in PWM mode to generate ADC_ExternalTrigConv_T4_CC4 */
TIM_OCStructInit(&timOC);
timOC.TIM_OCMode = TIM_OCMode_PWM1;
timOC.TIM_OutputState = TIM_OutputState_Enable;
timOC.TIM_Pulse = 1;
timOC.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC4Init(TIM4, &timOC);
/* TIM2 enable counter */
TIM_Cmd(TIM4, ENABLE);
/* enable ADC triggering */
ADC_ExternalTrigConvCmd(ADC1, ENABLE);
task_register(TASK_PROCESS_STICKS, sticks_process);
task_schedule(TASK_PROCESS_STICKS, 0, 20);
}
void VBatInit()
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
/* ADC Channel configuration */
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
/* Configure ADC Channel11 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
ADC_StructInit(&ADC_InitStructure);
/* Calibration procedure */
ADC_VoltageRegulatorCmd(ADC2, ENABLE);
/* Insert delay equal to 10 µs */
delay_us(10);
ADC_SelectCalibrationMode(ADC2, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC2);
while(ADC_GetCalibrationStatus(ADC2) != RESET );
//calibration_value = ADC_GetCalibrationValue(ADC2);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC2, &ADC_CommonInitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Disable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init(ADC2, &ADC_InitStructure);
/* ADC2 regular channel11 configuration */
ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 1, ADC_SampleTime_19Cycles5);
/* Enable ADC2 */
ADC_Cmd(ADC2, ENABLE);
/* wait for ADRDY */
while(!ADC_GetFlagStatus(ADC2, ADC_FLAG_RDY));
ADC_StartConversion(ADC2);
}
void initial_adc(void) {
GPIO_InitTypeDef structGPIO;
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div10 /*RCC_ADC12PLLCLK_Div128*/);
RCC_ADCCLKConfig(RCC_ADC34PLLCLK_Div10 /*RCC_ADC34PLLCLK_Div128*/);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12 | RCC_AHBPeriph_ADC34 | RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC | RCC_AHBPeriph_GPIOD, ENABLE);
//configure GPIO
structGPIO.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_3 | GPIO_Pin_2 | GPIO_Pin_6;
structGPIO.GPIO_Mode = GPIO_Mode_AN;
structGPIO.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &structGPIO);
structGPIO.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_10 | GPIO_Pin_1 | GPIO_Pin_12;
GPIO_Init(GPIOB, &structGPIO);
structGPIO.GPIO_Pin = GPIO_Pin_5;
GPIO_Init(GPIOC, &structGPIO);
structGPIO.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_11 /*| GPIO_Pin_14*/;
GPIO_Init(GPIOD, &structGPIO);
//configure ADC
/*power-on voltage reference*/
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
Delay(100);
ADC_VoltageRegulatorCmd(ADC2, ENABLE);
Delay(100);
ADC_VoltageRegulatorCmd(ADC3, ENABLE);
Delay(100);
ADC_VoltageRegulatorCmd(ADC4, ENABLE);
Delay(100);
/*calibration*/
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET );
ADC_SelectCalibrationMode(ADC2, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC2);
while(ADC_GetCalibrationStatus(ADC2) != RESET );
ADC_SelectCalibrationMode(ADC3, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC3);
while(ADC_GetCalibrationStatus(ADC3) != RESET );
ADC_SelectCalibrationMode(ADC4, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC4);
while(ADC_GetCalibrationStatus(ADC4) != RESET );
/*init logic*/
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_7;
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable /*ADC_ContinuousConvMode_Disable*/;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_RisingEdge;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Init(ADC2, &ADC_InitStructure);
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_4;
ADC_Init(ADC3, &ADC_InitStructure);
ADC_Init(ADC4, &ADC_InitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_RegSimul;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
ADC_CommonInit(ADC3, &ADC_CommonInitStructure);
ADC_CommonInit(ADC2, &ADC_CommonInitStructure);
ADC_CommonInit(ADC4, &ADC_CommonInitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 1, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_3, 1, ADC_SampleTime_1Cycles5); //514.3 kHz
ADC_RegularChannelConfig(ADC3, ADC_Channel_1, 1, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC4, ADC_Channel_3, 1, ADC_SampleTime_1Cycles5);
ADC_RegularChannelSequencerLengthConfig(ADC1, 1);
ADC_RegularChannelSequencerLengthConfig(ADC2, 1);
ADC_RegularChannelSequencerLengthConfig(ADC3, 1);
ADC_RegularChannelSequencerLengthConfig(ADC4, 1);
initial_opa();
//init NVIC
ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
return;
}
void init_adc( void )
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// GPIOA Periph clock enable
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
GPIO_StructInit(&GPIO_InitStructure);
//Configure ADC Channel1/2/3/4 PA1/2/3/4 as analog input
GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 );
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// ADC1 DeInit
ADC_DeInit(ADC1);
// ADC1 Periph clock enable
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
// DMA1 clock enable
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
// DMA1 Channel1 Config
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RegularConvData_Tab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = NO_SAMPLES * NO_CHANNELS;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
// DMA1 Channel1 enable
DMA_Cmd(DMA1_Channel1, ENABLE);
// ADC DMA request in circular mode
ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular);
// Enable ADC_DMA
ADC_DMACmd(ADC1, ENABLE);
// Initialize ADC structure
ADC_StructInit(&ADC_InitStructure);
// Configure the ADC1 in continous mode withe a resolutuion equal to 12 bits
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_JitterCmd(ADC1, ADC_JitterOff_PCLKDiv4, ENABLE);
//ADC Frequency set as 12MHz
//With 5 ADC readings at 239.5 + 12.5 ADC Cycles
//this gives a sampling rate of
// Convert the ADC_SOL_V with 239.5 + 12.5 = ADC Cycles as sampling time
ADC_ChannelConfig(ADC1, ADC_SOL_V , ADC_SampleTime_239_5Cycles);
// Convert the ADC_SOL_I with 239.5 + 12.5 = ADC Cycles as sampling time
ADC_ChannelConfig(ADC1, ADC_SOL_I , ADC_SampleTime_239_5Cycles);
// Convert the ADC_BATT_V with 239.5 + 12.5 = ADC Cycles as sampling time
ADC_ChannelConfig(ADC1, ADC_BATT_V , ADC_SampleTime_239_5Cycles);
// Convert the ADC_BATT_I with 239.5 + 12.5 = ADC Cycles as sampling time
ADC_ChannelConfig(ADC1, ADC_BATT_I , ADC_SampleTime_239_5Cycles);
//Enable Temperature Sensor
//>2.2us Sampling time required
ADC_TempSensorCmd(ENABLE);
ADC_ChannelConfig(ADC1, ADC_TEMP, ADC_SampleTime_239_5Cycles);
//Get Temp Calibration Values
ts_cal1 = *( (uint16_t*) 0x1FFFF7B8 );
ts_cal2 = *( (uint16_t*) 0x1FFFF7C2 );
// ADC Calibration
ADC_GetCalibrationFactor(ADC1);
// Enable ADC1
ADC_Cmd(ADC1, ENABLE);
// Wait the ADCEN falg
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));
//adc_init_analog_watchdog();
// ADC1 regular Software Start Conv
ADC_StartOfConversion(ADC1);
}
static void adcInstanceInit(ADCDevice adcDevice)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
adcDevice_t * adc = &adcHardware[adcDevice];
RCC_ClockCmd(adc->rccADC, ENABLE);
RCC_ClockCmd(adc->rccDMA, ENABLE);
DMA_DeInit(adc->DMAy_Channelx);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&adc->ADCx->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcValues[adcDevice];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = adc->usedChannelCount * ADC_AVERAGE_N_SAMPLES;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = ((adc->usedChannelCount > 1) || (ADC_AVERAGE_N_SAMPLES > 1)) ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(adc->DMAy_Channelx, &DMA_InitStructure);
DMA_Cmd(adc->DMAy_Channelx, ENABLE);
// calibrate
ADC_VoltageRegulatorCmd(adc->ADCx, ENABLE);
delay(10);
ADC_SelectCalibrationMode(adc->ADCx, ADC_CalibrationMode_Single);
ADC_StartCalibration(adc->ADCx);
while (ADC_GetCalibrationStatus(adc->ADCx) != RESET);
ADC_VoltageRegulatorCmd(adc->ADCx, DISABLE);
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_SynClkModeDiv4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_Circular;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(adc->ADCx, &ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = adc->usedChannelCount;
ADC_Init(adc->ADCx, &ADC_InitStructure);
uint8_t rank = 1;
for (int i = ADC_CHN_1; i < ADC_CHN_COUNT; i++) {
if (!adcConfig[i].enabled || adcConfig[i].adcDevice != adcDevice) {
continue;
}
ADC_RegularChannelConfig(adc->ADCx, adcConfig[i].adcChannel, rank++, adcConfig[i].sampleTime);
}
ADC_Cmd(adc->ADCx, ENABLE);
while (!ADC_GetFlagStatus(adc->ADCx, ADC_FLAG_RDY));
ADC_DMAConfig(adc->ADCx, ADC_DMAMode_Circular);
ADC_DMACmd(adc->ADCx, ENABLE);
ADC_StartConversion(adc->ADCx);
}
/**
* @brief Configure the ADC to run at a fixed oversampling
* @param[in] oversampling the amount of oversampling to run at
* @param[in] internal_adc_id handle to the device
*/
static void PIOS_INTERNAL_ADC_Config(uint32_t internal_adc_id, uint32_t oversampling)
{
struct pios_internal_adc_dev * adc_dev = (struct pios_internal_adc_dev *)internal_adc_id;
if(!PIOS_INTERNAL_ADC_validate(adc_dev))
{
return;
}
adc_dev->adc_oversample = (oversampling > PIOS_ADC_MAX_OVERSAMPLING) ? PIOS_ADC_MAX_OVERSAMPLING : oversampling;
ADC_DeInit(ADC1);
ADC_DeInit(ADC2);
/* Disable interrupts */
DMA_ITConfig(adc_dev->cfg->dma.rx.channel, adc_dev->cfg->dma.irq.flags, DISABLE);
/* Enable ADC clocks */
PIOS_ADC_CLOCK_FUNCTION;
/* Map channels to conversion slots depending on the channel selection mask */
for (int32_t i = 0; i < PIOS_ADC_NUM_PINS; i++) {
ADC_RegularChannelConfig(ADC_MAPPING[i], ADC_CHANNEL[i],
ADC_CHANNEL_MAPPING[i],
PIOS_ADC_SAMPLE_TIME);
}
#if (PIOS_ADC_USE_TEMP_SENSOR)
ADC_TempSensorVrefintCmd(ENABLE);
ADC_RegularChannelConfig(PIOS_ADC_TEMP_SENSOR_ADC, ADC_Channel_16,
PIOS_ADC_TEMP_SENSOR_ADC_CHANNEL,
PIOS_ADC_SAMPLE_TIME);
#endif
// return
/* Configure ADCs */
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = ((PIOS_ADC_NUM_CHANNELS + 1) >> 1);
ADC_Init(ADC1, &ADC_InitStructure);
#if (PIOS_ADC_USE_ADC2)
ADC_Init(ADC2, &ADC_InitStructure);
/* Enable ADC2 external trigger conversion (to synch with ADC1) */
ADC_ExternalTrigConvCmd(ADC2, ENABLE);
#endif
RCC_ADCCLKConfig(PIOS_ADC_ADCCLK);
/* Enable ADC1->DMA request */
ADC_DMACmd(ADC1, ENABLE);
/* ADC1 calibration */
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1)) ;
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1)) ;
#if (PIOS_ADC_USE_ADC2)
/* ADC2 calibration */
ADC_Cmd(ADC2, ENABLE);
ADC_ResetCalibration(ADC2);
while (ADC_GetResetCalibrationStatus(ADC2)) ;
ADC_StartCalibration(ADC2);
while (ADC_GetCalibrationStatus(ADC2)) ;
#endif
/* This makes sure we have an even number of transfers if using ADC2 */
adc_dev->dma_block_size = ((PIOS_ADC_NUM_CHANNELS + PIOS_ADC_USE_ADC2) >> PIOS_ADC_USE_ADC2) << PIOS_ADC_USE_ADC2;
adc_dev->dma_half_buffer_size = adc_dev->dma_block_size * adc_dev->adc_oversample;
/* Configure DMA channel */
DMA_InitTypeDef dma_init = adc_dev->cfg->dma.rx.init;
dma_init.DMA_MemoryBaseAddr = (uint32_t) &adc_dev->raw_data_buffer[0];
dma_init.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init.DMA_BufferSize = adc_dev->dma_half_buffer_size; /* x2 for double buffer /2 for 32-bit xfr */
DMA_Init(adc_dev->cfg->dma.rx.channel, &dma_init);
DMA_Cmd(adc_dev->cfg->dma.rx.channel, ENABLE);
/* Trigger interrupt when for half conversions too to indicate double buffer */
DMA_ITConfig(adc_dev->cfg->dma.rx.channel, DMA_IT_TC, ENABLE);
DMA_ITConfig(adc_dev->cfg->dma.rx.channel, DMA_IT_HT, ENABLE);
/* Configure DMA interrupt */
NVIC_Init((NVIC_InitTypeDef*)&adc_dev->cfg->dma.irq.init);
/* Finally start initial conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
/* Use simple averaging filter for now */
for (int32_t i = 0; i < adc_dev->adc_oversample; i++)
adc_dev->fir_coeffs[i] = 1;
adc_dev->fir_coeffs[adc_dev->adc_oversample] = adc_dev->adc_oversample;
/* Enable DMA1 clock */
RCC_AHBPeriphClockCmd(adc_dev->cfg->dma.ahb_clk, ENABLE);
}
/* functions */
void adc_init()
{
GPIO_InitTypeDef gpio;
ADC_CommonInitTypeDef adc_com;
ADC_InitTypeDef adc_init;
NVIC_InitTypeDef nvic;
int i;
// make sure the HSI is turned on - STM32L1xx uses HSI only for ADC
RCC_HSICmd(ENABLE);
// enable ADC clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
// set up pins as analog inputs
// NOTE: clocks were likely enabled earlier. fix if they weren't.
gpio.GPIO_Mode = GPIO_Mode_AN;
gpio.GPIO_Speed = GPIO_Speed_2MHz;
gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;
for (i = 0; i < 3; i++) {
gpio.GPIO_Pin = adc_gpio[i].pin;
GPIO_Init(adc_gpio[i].port, &gpio);
}
// configure ADC initial values
ADC_CommonStructInit(&adc_com);
ADC_StructInit(&adc_init);
adc_init.ADC_ExternalTrigConv = 0;
// set up channels to read
ADC_RegularChannelConfig(ADC1, ADC_CHAN_MIC_SIG, ADC_READ_MIC_SIG + 1, ADC_SampleTime_4Cycles);
ADC_RegularChannelConfig(ADC1, ADC_CHAN_MIC_PEAK, ADC_READ_MIC_PEAK + 1, ADC_SampleTime_4Cycles);
ADC_RegularChannelConfig(ADC1, ADC_CHAN_BATT_VOLTAGE, ADC_READ_BATT_VOLTAGE + 1, ADC_SampleTime_4Cycles);
adc_init.ADC_ScanConvMode = ENABLE;
adc_init.ADC_NbrOfConversion = 3;
// enable end of conversion on each channel read
ADC_EOCOnEachRegularChannelCmd(ADC1, ENABLE);
// freeze ADC until data has been read
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
// initialize the ADC
ADC_CommonInit(&adc_com);
ADC_Init(ADC1, &adc_init);
// it doesn't look like STM32L100 has auto-calibrate feature,
// but if it did, we'd set it up here. baw.
// set up ADC power saving
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
// enable interrupt
ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
// set interrupt priority
nvic.NVIC_IRQChannel = ADC1_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 3;
nvic.NVIC_IRQChannelSubPriority = 0;
nvic.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic);
// finally, turn on the ADC
ADC_Cmd(ADC1, ENABLE);
}
void adcInit(void)
{
if(isInit)
return;
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
// Enable TIM2, GPIOA and ADC1 clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
//Timer configuration
TIM_TimeBaseStructure.TIM_Period = ADC_TRIG_PERIOD;
TIM_TimeBaseStructure.TIM_Prescaler = ADC_TRIG_PRESCALE;
TIM_TimeBaseStructure.TIM_ClockDivision = 4;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
// TIM2 channel2 configuration in PWM mode
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 1;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC2Init(TIM2, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);
// Halt timer 2 during debug halt.
DBGMCU_Config(DBGMCU_TIM2_STOP, ENABLE);
adcDmaInit();
// ADC1 configuration
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 2;
ADC_Init(ADC1, &ADC_InitStructure);
// ADC1 channel sequence
ADC_RegularChannelConfig(ADC1, CH_VREF, 1, ADC_SampleTime_28Cycles);
ADC_RegularChannelConfig(ADC1, CH_VBAT, 2, ADC_SampleTime_28Cycles);
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_VBATCmd(ENABLE);
// Enable ADC1
ADC_Cmd(ADC1, ENABLE);
// Enable the DMA1 channel Interrupt
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_ADC_PRI;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
adcQueue = xQueueCreate(1, sizeof(AdcGroup));
xTaskCreate(adcTask, "ADC", configMINIMAL_STACK_SIZE, NULL,
/*priority*/3, NULL);
isInit = true;
}
/**
* @brief Initialise the ADC Peripheral
* @param[in] adc_oversample
* @return
* @arg 1 for success
* @arg 0 for failure
* Currently ignores rates and uses hardcoded values. Need a little logic to
* map from sampling rates and such to ADC constants.
*/
uint8_t AHRS_ADC_Config(int32_t adc_oversample)
{
int32_t i;
ADC_DeInit(ADC1);
ADC_DeInit(ADC2);
/* Setup analog pins */
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
/* Enable each ADC pin in the array */
for (i = 0; i < PIOS_ADC_NUM_PINS; i++) {
GPIO_InitStructure.GPIO_Pin = ADC_GPIO_PIN[i];
GPIO_Init(ADC_GPIO_PORT[i], &GPIO_InitStructure);
}
/* Enable ADC clocks */
PIOS_ADC_CLOCK_FUNCTION;
/* Map channels to conversion slots depending on the channel selection mask */
for (i = 0; i < PIOS_ADC_NUM_PINS; i++) {
ADC_RegularChannelConfig(ADC_MAPPING[i], ADC_CHANNEL[i],
ADC_CHANNEL_MAPPING[i],
PIOS_ADC_SAMPLE_TIME);
}
#if (PIOS_ADC_USE_TEMP_SENSOR)
ADC_TempSensorVrefintCmd(ENABLE);
ADC_RegularChannelConfig(PIOS_ADC_TEMP_SENSOR_ADC, ADC_Channel_14,
PIOS_ADC_TEMP_SENSOR_ADC_CHANNEL,
PIOS_ADC_SAMPLE_TIME);
#endif
// TODO: update ADC to continuous sampling, configure the sampling rate
/* Configure ADCs */
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel =
((PIOS_ADC_NUM_CHANNELS + 1) >> 1);
ADC_Init(ADC1, &ADC_InitStructure);
#if (PIOS_ADC_USE_ADC2)
ADC_Init(ADC2, &ADC_InitStructure);
/* Enable ADC2 external trigger conversion (to synch with ADC1) */
ADC_ExternalTrigConvCmd(ADC2, ENABLE);
#endif
RCC_ADCCLKConfig(PIOS_ADC_ADCCLK);
RCC_PCLK2Config(RCC_HCLK_Div16);
/* Enable ADC1->DMA request */
ADC_DMACmd(ADC1, ENABLE);
/* ADC1 calibration */
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1)) ;
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1)) ;
#if (PIOS_ADC_USE_ADC2)
/* ADC2 calibration */
ADC_Cmd(ADC2, ENABLE);
ADC_ResetCalibration(ADC2);
while (ADC_GetResetCalibrationStatus(ADC2)) ;
ADC_StartCalibration(ADC2);
while (ADC_GetCalibrationStatus(ADC2)) ;
#endif
/* Enable DMA1 clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* Configure DMA1 channel 1 to fetch data from ADC result register */
DMA_InitTypeDef DMA_InitStructure;
DMA_StructInit(&DMA_InitStructure);
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) & ADC1->DR;
DMA_InitStructure.DMA_MemoryBaseAddr =
(uint32_t) & raw_data_buffer[0];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
/* We are double buffering half words from the ADC. Make buffer appropriately sized */
DMA_InitStructure.DMA_BufferSize =
(PIOS_ADC_NUM_CHANNELS * adc_oversample * 2) >> 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
/* Note: We read ADC1 and ADC2 in parallel making a word read, also hence the half buffer size */
DMA_InitStructure.DMA_PeripheralDataSize =
DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel1, ENABLE);
/* Trigger interrupt when for half conversions too to indicate double buffer */
DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
DMA_ITConfig(DMA1_Channel1, DMA_IT_HT, ENABLE);
/* Configure and enable DMA interrupt */
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =
PIOS_ADC_IRQ_PRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Finally start initial conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
return 1;
}
/**
* @brief Configures the ADC1 channel7 in continuous mode.
* @param None
* @retval None
*/
static void ADC_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
/* Enable the GPIOC Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
/* Configure the ADC clock */
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);
/* ADC1 Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
/* Setup SysTick Timer for 1 µsec interrupts */
if (SysTick_Config(SystemCoreClock / 1000000))
{
/* Capture error */
while (1)
{}
}
/* Configure PC.1 (ADC Channel7) in analog mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStructure);
ADC_StructInit(&ADC_InitStructure);
/* Calibration procedure */
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
/* Insert delay equal to 10 µs */
Delay(10);
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET );
calibration_value = ADC_GetCalibrationValue(ADC1);
/* Configure the ADC1 in continuous mode */
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel7 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 1, ADC_SampleTime_181Cycles5);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* wait for ADRDY */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));
/* ADC1 DMA Enable */
ADC_DMACmd(ADC1, ENABLE);
ADC_DMAConfig(ADC1, ADC_DMAMode_Circular);
/* Start ADC1 Software Conversion */
ADC_StartConversion(ADC1);
}
void ict_Init(void)
{
led_Init();
led_flash(LED_GREEN);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
GPIO_InitTypeDef GPIO_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
DAC_InitTypeDef DAC_InitStructure;
RCC_ADCCLKConfig(RCC_PCLK2_Div8); /*72Mhz/8 = 9Mhz*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC3, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE| RCC_APB2Periph_GPIOD|
RCC_APB2Periph_GPIOC| RCC_APB2Periph_GPIOA, ENABLE);
// IO config
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_4|
GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// DAC config
DAC_StructInit(&DAC_InitStructure);
DAC_Init(DAC_Channel_1, &DAC_InitStructure);
DAC_Cmd(DAC_Channel_1, ENABLE);
DAC_StructInit(&DAC_InitStructure);
DAC_Init(DAC_Channel_2, &DAC_InitStructure);
DAC_Cmd(DAC_Channel_2, ENABLE);
/* ADC1 config, Power Ouput Voltage sampling,
V1 = ADC1_CH2 = PA2 = ADC123_IN2
V2 = ADC2_CH7 = PA7 = ADC12_IN7
*/
ADC_DeInit(ADC1);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 0;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_InjectedSequencerLengthConfig(ADC1, 4);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_2, 1, ADC_SampleTime_55Cycles5); //9Mhz/(71.5 + 12.5) = 107.1Khz
ADC_InjectedChannelConfig(ADC1, ADC_Channel_7, 2, ADC_SampleTime_55Cycles5);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_1, 3, ADC_SampleTime_55Cycles5); //I0
ADC_InjectedChannelConfig(ADC1, ADC_Channel_6, 4, ADC_SampleTime_55Cycles5); //I1
ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_None);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1));
ADC_SoftwareStartInjectedConvCmd(ADC1, ENABLE);
/* ADC2 config, current sampling & over current protection
* I1 = ADC1_CH1 = PA1 = ADC123_IN1
*/
ADC_DeInit(ADC2);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_Init(ADC2, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC2, ADC_Channel_1, 1, ADC_SampleTime_71Cycles5); //9Mhz/(71.5 + 12.5) = 107.1Khz
ADC_Cmd(ADC2, ENABLE);
ADC_ResetCalibration(ADC2);
while (ADC_GetResetCalibrationStatus(ADC2));
ADC_StartCalibration(ADC2);
while (ADC_GetCalibrationStatus(ADC2));
ADC_AnalogWatchdogThresholdsConfig(ADC2, mA2d(100), 0x000);
ADC_AnalogWatchdogSingleChannelConfig(ADC2, ADC_Channel_1);
ADC_AnalogWatchdogCmd(ADC2, ADC_AnalogWatchdog_SingleRegEnable);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//START
ADC_ITConfig(ADC2, ADC_IT_AWD, ENABLE);
ADC_SoftwareStartConvCmd(ADC2, ENABLE);
/* ADC3 config, current sampling & over current protection
* I2 = ADC2_CH6 = PA6 = ADC12_IN6
*/
ADC_DeInit(ADC3);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_Init(ADC3, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC3, ADC_Channel_6, 1, ADC_SampleTime_71Cycles5); //9Mhz/(71.5 + 12.5) = 107.1Khz
ADC_Cmd(ADC3, ENABLE);
ADC_ResetCalibration(ADC3);
while (ADC_GetResetCalibrationStatus(ADC3));
ADC_StartCalibration(ADC3);
while (ADC_GetCalibrationStatus(ADC3));
ADC_SoftwareStartConvCmd(ADC3, ENABLE);
ADC_AnalogWatchdogThresholdsConfig(ADC3, mA2d(100),0x000);
ADC_AnalogWatchdogSingleChannelConfig(ADC3, ADC_Channel_6);
ADC_AnalogWatchdogCmd(ADC3, ADC_AnalogWatchdog_SingleRegEnable);
NVIC_InitStructure.NVIC_IRQChannel = ADC3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//START
ADC_ITConfig(ADC3, ADC_IT_AWD, ENABLE);
ADC_SoftwareStartConvCmd(ADC3, ENABLE);
// TIM config
TIM_TimeBaseStructure.TIM_Period = 100 - 1; //Fclk = 10KHz /100 = 100Hz
TIM_TimeBaseStructure.TIM_Prescaler = 7200 - 1; //prediv to 72MHz to 10KHz
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ClearFlag(TIM2, TIM_FLAG_Update);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM2, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
GPIO_ResetBits(GPIOD, GPIO_Pin_12);
GPIO_ResetBits(GPIOD, GPIO_Pin_13);
mbi5025_Init(&ict_mbi5025);
mbi5025_EnableOE(&ict_mbi5025);
}
void adcInit(adcConfig_t *config)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t i;
uint8_t configuredAdcChannels = 0;
memset(&adcOperatingConfig, 0, sizeof(adcOperatingConfig));
if (config->vbat.enabled) {
adcOperatingConfig[ADC_BATTERY].tag = config->vbat.ioTag;
}
if (config->rssi.enabled) {
adcOperatingConfig[ADC_RSSI].tag = config->rssi.ioTag; //RSSI_ADC_CHANNEL;
}
if (config->external1.enabled) {
adcOperatingConfig[ADC_EXTERNAL1].tag = config->external1.ioTag; //EXTERNAL1_ADC_CHANNEL;
}
if (config->currentMeter.enabled) {
adcOperatingConfig[ADC_CURRENT].tag = config->currentMeter.ioTag; //CURRENT_METER_ADC_CHANNEL;
}
ADCDevice device = adcDeviceByInstance(ADC_INSTANCE);
if (device == ADCINVALID)
return;
adcDevice_t adc = adcHardware[device];
bool adcActive = false;
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcOperatingConfig[i].tag)
continue;
adcActive = true;
IOInit(IOGetByTag(adcOperatingConfig[i].tag), OWNER_ADC_BATT + i, 0);
IOConfigGPIO(IOGetByTag(adcOperatingConfig[i].tag), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcOperatingConfig[i].adcChannel = adcChannelByTag(adcOperatingConfig[i].tag);
adcOperatingConfig[i].dmaIndex = configuredAdcChannels++;
adcOperatingConfig[i].sampleTime = ADC_SampleTime_480Cycles;
adcOperatingConfig[i].enabled = true;
}
if (!adcActive) {
return;
}
RCC_ClockCmd(adc.rccADC, ENABLE);
dmaInit(dmaGetIdentifier(adc.DMAy_Streamx), OWNER_ADC, 0);
DMA_DeInit(adc.DMAy_Streamx);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&adc.ADCx->DR;
DMA_InitStructure.DMA_Channel = adc.channel;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = configuredAdcChannels;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = configuredAdcChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_Init(adc.DMAy_Streamx, &DMA_InitStructure);
DMA_Cmd(adc.DMAy_Streamx, ENABLE);
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = configuredAdcChannels;
ADC_InitStructure.ADC_ScanConvMode = configuredAdcChannels > 1 ? ENABLE : DISABLE; // 1=scan more that one channel in group
ADC_Init(adc.ADCx, &ADC_InitStructure);
uint8_t rank = 1;
for (i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcOperatingConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(adc.ADCx, adcOperatingConfig[i].adcChannel, rank++, adcOperatingConfig[i].sampleTime);
}
ADC_DMARequestAfterLastTransferCmd(adc.ADCx, ENABLE);
ADC_DMACmd(adc.ADCx, ENABLE);
ADC_Cmd(adc.ADCx, ENABLE);
ADC_SoftwareStartConv(adc.ADCx);
}
void adc_init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t i;
/* clear buffers */
for(i=0;i<4;i++)
{
adc_buffer[i] = adc_prev_buffer[i] = 0;
}
/* DMA1 clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
/* DMA1 Channel1 Config */
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t *)(&ADC1->DR);
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adc_buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* DMA1 Channel1 enable */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* GPIOA Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/* ADC1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* Configure ADC Channel1,2,3 as analog inputs */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* ADCs DeInit */
ADC_DeInit(ADC1);
/* Initialize ADC structure */
ADC_StructInit(&ADC_InitStructure);
/* Configure the ADC1 in continuous mode with a resolution equal to 12 bits */
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_Init(ADC1, &ADC_InitStructure);
/* Convert the ADC1 Channel 1,2,3 with 239.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_0 , ADC_SampleTime_239_5Cycles);
ADC_ChannelConfig(ADC1, ADC_Channel_1 , ADC_SampleTime_239_5Cycles);
ADC_ChannelConfig(ADC1, ADC_Channel_2 , ADC_SampleTime_239_5Cycles);
ADC_ChannelConfig(ADC1, ADC_Channel_3 , ADC_SampleTime_239_5Cycles);
/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);
/* ADC DMA request in circular mode */
ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular);
/* Enable ADC_DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable the ADC peripheral */
ADC_Cmd(ADC1, ENABLE);
/* Wait the ADRDY flag */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADRDY));
/* ADC1 regular Software Start Conv */
ADC_StartOfConversion(ADC1);
}
void adcInit(void) {
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitTypeDef ADC_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
AQ_NOTICE("ADC init\n");
memset((void *)&adcData, 0, sizeof(adcData));
// energize mag's set/reset circuit
adcData.magSetReset = digitalInit(GPIOE, GPIO_Pin_10, 1);
// use auto-zero function of gyros
adcData.rateAutoZero = digitalInit(GPIOE, GPIO_Pin_8, 0);
// bring ACC's SELF TEST line low
adcData.accST = digitalInit(GPIOE, GPIO_Pin_12, 0);
// bring ACC's SCALE line low (ADXL3X5 requires this line be tied to GND or left floating)
adcData.accScale = digitalInit(GPIOC, GPIO_Pin_15, 0);
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2 | RCC_APB2Periph_ADC3, ENABLE);
adcData.sample = ADC_SAMPLES - 1;
// Use STM32F4's Triple Regular Simultaneous Mode capable of ~ 6M samples per second
DMA_DeInit(ADC_DMA_STREAM);
DMA_InitStructure.DMA_Channel = ADC_DMA_CHANNEL;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)adcDMAData.adc123Raw1;
DMA_InitStructure.DMA_PeripheralBaseAddr = ((uint32_t)0x40012308);
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = ADC_CHANNELS * 3 * 2;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(ADC_DMA_STREAM, &DMA_InitStructure);
DMA_ITConfig(ADC_DMA_STREAM, DMA_IT_HT | DMA_IT_TC, ENABLE);
DMA_ClearITPendingBit(ADC_DMA_STREAM, ADC_DMA_FLAGS);
DMA_Cmd(ADC_DMA_STREAM, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = ADC_DMA_IRQ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// ADC Common Init
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_TripleMode_RegSimult;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInit(&ADC_CommonInitStructure);
// ADC1 configuration
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 16;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGX, 1, ADC_SAMPLE_TIME); // magX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGX, 2, ADC_SAMPLE_TIME); // magX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGX, 3, ADC_SAMPLE_TIME); // magX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGX, 4, ADC_SAMPLE_TIME); // magX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGY, 5, ADC_SAMPLE_TIME); // magY
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGY, 6, ADC_SAMPLE_TIME); // magY
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGY, 7, ADC_SAMPLE_TIME); // magY
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGY, 8, ADC_SAMPLE_TIME); // magY
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGZ, 9, ADC_SAMPLE_TIME); // magZ
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGZ, 10, ADC_SAMPLE_TIME); // magZ
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGZ, 11, ADC_SAMPLE_TIME); // magZ
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_MAGZ, 12, ADC_SAMPLE_TIME); // magZ
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_RATEX, 13, ADC_SAMPLE_TIME); // rateX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_RATEX, 14, ADC_SAMPLE_TIME); // rateX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_RATEX, 15, ADC_SAMPLE_TIME); // rateX
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL_RATEX, 16, ADC_SAMPLE_TIME); // rateX
// Enable ADC1 DMA since ADC1 is the Master
ADC_DMACmd(ADC1, ENABLE);
// ADC2 configuration
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 16;
ADC_Init(ADC2, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_RATEY, 1, ADC_SAMPLE_TIME); // rateY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_RATEY, 2, ADC_SAMPLE_TIME); // rateY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_RATEY, 3, ADC_SAMPLE_TIME); // rateY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_RATEY, 4, ADC_SAMPLE_TIME); // rateY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCX, 5, ADC_SAMPLE_TIME); // accX
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCX, 6, ADC_SAMPLE_TIME); // accX
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCX, 7, ADC_SAMPLE_TIME); // accX
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCX, 8, ADC_SAMPLE_TIME); // accX
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCY, 9, ADC_SAMPLE_TIME); // accY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCY, 10, ADC_SAMPLE_TIME); // accY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCY, 11, ADC_SAMPLE_TIME); // accY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCY, 12, ADC_SAMPLE_TIME); // accY
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCZ, 13, ADC_SAMPLE_TIME); // accZ
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCZ, 14, ADC_SAMPLE_TIME); // accZ
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCZ, 15, ADC_SAMPLE_TIME); // accZ
ADC_RegularChannelConfig(ADC2, ADC_CHANNEL_ACCZ, 16, ADC_SAMPLE_TIME); // accZ
// ADC3 configuration
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 16;
ADC_Init(ADC3, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_RATEZ, 1, ADC_SAMPLE_TIME); // rateZ
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_RATEZ, 2, ADC_SAMPLE_TIME); // rateZ
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_RATEZ, 3, ADC_SAMPLE_TIME); // rateZ
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_RATEZ, 4, ADC_SAMPLE_TIME); // rateZ
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_TEMP1, 5, ADC_SAMPLE_TIME); // temp1
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_TEMP2, 6, ADC_SAMPLE_TIME); // temp2
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES1, 7, ADC_SAMPLE_TIME); // pressure1
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES1, 8, ADC_SAMPLE_TIME); // pressure1
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES1, 9, ADC_SAMPLE_TIME); // pressure1
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES1, 10, ADC_SAMPLE_TIME); // pressure1
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_VIN, 11, ADC_SAMPLE_TIME); // Vin
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_TEMP3, 12, ADC_SAMPLE_TIME); // temp3
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES2, 13, ADC_SAMPLE_TIME); // pressure2
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES2, 14, ADC_SAMPLE_TIME); // pressure2
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES2, 15, ADC_SAMPLE_TIME); // pressure2
ADC_RegularChannelConfig(ADC3, ADC_CHANNEL_PRES2, 16, ADC_SAMPLE_TIME); // pressure2
// Enable DMA request after last transfer (Multi-ADC mode)
ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);
// Enable
ADC_Cmd(ADC1, ENABLE);
ADC_Cmd(ADC2, ENABLE);
ADC_Cmd(ADC3, ENABLE);
adcData.adcFlag = CoCreateFlag(1, 0);
adcTaskStack = aqStackInit(ADC_STACK_SIZE, "ADC");
adcData.adcTask = CoCreateTask(adcTaskCode, (void *)0, ADC_PRIORITY, &adcTaskStack[ADC_STACK_SIZE-1], ADC_STACK_SIZE);
// Start ADC1 Software Conversion
ADC_SoftwareStartConv(ADC1);
yield(100);
// set initial temperatures
adcData.temp1 = adcIDGVoltsToTemp(adcData.voltages[ADC_VOLTS_TEMP1]);
adcData.temp2 = adcIDGVoltsToTemp(adcData.voltages[ADC_VOLTS_TEMP2]);
adcData.temp3 = adcT1VoltsToTemp(adcData.voltages[ADC_VOLTS_TEMP3]);
analogData.vIn = adcVsenseToVin(adcData.voltages[ADC_VOLTS_VIN]);
adcCalibOffsets();
}
void adcInit(drv_adc_config_t *init)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t i;
uint8_t adcChannelCount = 0;
memset(&adcConfig, 0, sizeof(adcConfig));
#ifdef VBAT_ADC_PIN
if (init->enableVBat) {
IOInit(IOGetByTag(IO_TAG(VBAT_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(VBAT_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_BATTERY].adcChannel = VBAT_ADC_CHANNEL;
adcConfig[ADC_BATTERY].dmaIndex = adcChannelCount;
adcConfig[ADC_BATTERY].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_BATTERY].enabled = true;
adcChannelCount++;
}
#endif
#ifdef RSSI_ADC_PIN
if (init->enableRSSI) {
IOInit(IOGetByTag(IO_TAG(RSSI_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(RSSI_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_RSSI].adcChannel = RSSI_ADC_CHANNEL;
adcConfig[ADC_RSSI].dmaIndex = adcChannelCount;
adcConfig[ADC_RSSI].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_RSSI].enabled = true;
adcChannelCount++;
}
#endif
#ifdef CURRENT_METER_ADC_PIN
if (init->enableCurrentMeter) {
IOInit(IOGetByTag(IO_TAG(CURRENT_METER_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(CURRENT_METER_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_CURRENT].adcChannel = CURRENT_METER_ADC_CHANNEL;
adcConfig[ADC_CURRENT].dmaIndex = adcChannelCount;
adcConfig[ADC_CURRENT].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CURRENT].enabled = true;
adcChannelCount++;
}
#endif
#ifdef EXTERNAL1_ADC_PIN
if (init->enableExternal1) {
IOInit(IOGetByTag(IO_TAG(EXTERNAL1_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(EXTERNAL1_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_EXTERNAL1].adcChannel = EXTERNAL1_ADC_CHANNEL;
adcConfig[ADC_EXTERNAL1].dmaIndex = adcChannelCount;
adcConfig[ADC_EXTERNAL1].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_EXTERNAL1].enabled = true;
adcChannelCount++;
}
#endif
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div256); // 72 MHz divided by 256 = 281.25 kHz
RCC_AHBPeriphClockCmd(ADC_AHB_PERIPHERAL | RCC_AHBPeriph_ADC12, ENABLE);
DMA_DeInit(ADC_DMA_CHANNEL);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC_INSTANCE->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = adcChannelCount;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = adcChannelCount > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(ADC_DMA_CHANNEL, &DMA_InitStructure);
DMA_Cmd(ADC_DMA_CHANNEL, ENABLE);
// calibrate
ADC_VoltageRegulatorCmd(ADC_INSTANCE, ENABLE);
delay(10);
ADC_SelectCalibrationMode(ADC_INSTANCE, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC_INSTANCE);
while(ADC_GetCalibrationStatus(ADC_INSTANCE) != RESET);
ADC_VoltageRegulatorCmd(ADC_INSTANCE, DISABLE);
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_SynClkModeDiv4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_Circular;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC_INSTANCE, &ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = adcChannelCount;
ADC_Init(ADC_INSTANCE, &ADC_InitStructure);
uint8_t rank = 1;
for (i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(ADC_INSTANCE, adcConfig[i].adcChannel, rank++, adcConfig[i].sampleTime);
}
ADC_Cmd(ADC_INSTANCE, ENABLE);
while(!ADC_GetFlagStatus(ADC_INSTANCE, ADC_FLAG_RDY));
ADC_DMAConfig(ADC_INSTANCE, ADC_DMAMode_Circular);
ADC_DMACmd(ADC_INSTANCE, ENABLE);
ADC_StartConversion(ADC_INSTANCE);
}
int main(void)
{
/* SysTick end of count event each 10ms */
RCC_GetClocksFreq(&RCC_Clocks);
/* Add your application code here
*/
//SysTick_Type SysTick1;
//SysTick1.LOAD = 48000;
//SysTick1.VAL = 0;
USART1Init();
USART1print((int32_t)RCC_Clocks.HCLK_Frequency);
SysTick_Config(RCC_Clocks.HCLK_Frequency/10000);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* Configure ADC Channel11 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* ADCs DeInit */
ADC_DeInit(ADC1);
/* Initialize ADC structure */
ADC_InitTypeDef ADCInit;
ADC_StructInit(&ADCInit);
ADCInit.ADC_ContinuousConvMode = ENABLE;
ADCInit.ADC_DataAlign = ADC_DataAlign_Right;
ADCInit.ADC_ExternalTrigConv = ADC_ExternalTrigConvEdge_None;
ADCInit.ADC_Resolution = ADC_Resolution_12b;
ADCInit.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_Init(ADC1, &ADCInit);
/* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_10 , ADC_SampleTime_1_5Cycles);
/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);
/* Enable ADCperipheral[PerIdx] */
ADC_Cmd(ADC1, ENABLE);
/* Wait the ADCEN falg */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));
/* ADC1 regular Software Start Conv */
ADC_StartOfConversion(ADC1);
USART1println("INIT!");
/* Infinite loop */
while (1)
{
++x;
//while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
//USART1println(ADC_GetConversionValue(ADC1));
}
}
void adcInit(drv_adc_config_t *init)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint8_t i;
uint8_t configuredAdcChannels = 0;
memset(&adcConfig, 0, sizeof(adcConfig));
#if !defined(VBAT_ADC_PIN) && !defined(EXTERNAL1_ADC_PIN) && !defined(RSSI_ADC_PIN) && !defined(CURRENT_METER_ADC_PIN)
UNUSED(init);
#endif
#ifdef VBAT_ADC_PIN
if (init->enableVBat) {
IOInit(IOGetByTag(IO_TAG(VBAT_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(VBAT_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_BATTERY].adcChannel = VBAT_ADC_CHANNEL;
adcConfig[ADC_BATTERY].dmaIndex = configuredAdcChannels++;
adcConfig[ADC_BATTERY].enabled = true;
adcConfig[ADC_BATTERY].sampleTime = ADC_SampleTime_480Cycles;
}
#endif
#ifdef EXTERNAL1_ADC_PIN
if (init->enableExternal1) {
IOInit(IOGetByTag(IO_TAG(EXTERNAL1_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(EXTERNAL1_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_EXTERNAL1].adcChannel = EXTERNAL1_ADC_CHANNEL;
adcConfig[ADC_EXTERNAL1].dmaIndex = configuredAdcChannels++;
adcConfig[ADC_EXTERNAL1].enabled = true;
adcConfig[ADC_EXTERNAL1].sampleTime = ADC_SampleTime_480Cycles;
}
#endif
#ifdef RSSI_ADC_PIN
if (init->enableRSSI) {
IOInit(IOGetByTag(IO_TAG(RSSI_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(RSSI_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_RSSI].adcChannel = RSSI_ADC_CHANNEL;
adcConfig[ADC_RSSI].dmaIndex = configuredAdcChannels++;
adcConfig[ADC_RSSI].enabled = true;
adcConfig[ADC_RSSI].sampleTime = ADC_SampleTime_480Cycles;
}
#endif
#ifdef CURRENT_METER_ADC_PIN
if (init->enableCurrentMeter) {
IOInit(IOGetByTag(IO_TAG(CURRENT_METER_ADC_PIN)), OWNER_SYSTEM, RESOURCE_ADC);
IOConfigGPIO(IOGetByTag(IO_TAG(CURRENT_METER_ADC_PIN)), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
adcConfig[ADC_CURRENT].adcChannel = CURRENT_METER_ADC_CHANNEL;
adcConfig[ADC_CURRENT].dmaIndex = configuredAdcChannels++;
adcConfig[ADC_CURRENT].enabled = true;
adcConfig[ADC_CURRENT].sampleTime = ADC_SampleTime_480Cycles;
}
#endif
//RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div256); // 72 MHz divided by 256 = 281.25 kHz
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
DMA_DeInit(DMA2_Stream4);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR;
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = configuredAdcChannels;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = configuredAdcChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_Init(DMA2_Stream4, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream4, ENABLE);
// calibrate
/*
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
delay(10);
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET);
ADC_VoltageRegulatorCmd(ADC1, DISABLE);
*/
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = configuredAdcChannels;
ADC_InitStructure.ADC_ScanConvMode = configuredAdcChannels > 1 ? ENABLE : DISABLE; // 1=scan more that one channel in group
ADC_Init(ADC1, &ADC_InitStructure);
uint8_t rank = 1;
for (i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(ADC1, adcConfig[i].adcChannel, rank++, adcConfig[i].sampleTime);
}
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_SoftwareStartConv(ADC1);
}
void main(void)
#endif
{
ClockConfigure();
#if defined (_USE_DEBUG_UART_)
DebugUARTInit();
#endif /* #if defined (_USE_DEBUG_UART_) */
/* Enable peripheral clocks ----------------------------------------------*/
RST_CLK_PCLKcmd((RST_CLK_PCLK_RST_CLK |
RST_CLK_PCLK_ADC |
RST_CLK_PCLK_PORTD |
RST_CLK_PCLK_PORTB),
ENABLE);
/* Reset PORTD settings */
PORT_DeInit(MDR_PORTD );
/* Configure ADC pin: ADC2 */
/* Configure PORTD pin 9 */
PORT_InitStructure.PORT_Pin = PORT_Pin_9;
PORT_InitStructure.PORT_OE = PORT_OE_IN;
PORT_InitStructure.PORT_MODE = PORT_MODE_ANALOG;
PORT_Init(MDR_PORTD, &PORT_InitStructure);
/* Configure PORTB pins 0, 1 for output to switch LED1,2 on/off */
/* Configure PORTB pins 0, 1 */
PORT_InitStructure.PORT_FUNC = PORT_FUNC_PORT;
PORT_InitStructure.PORT_Pin = PORT_Pin_0 | PORT_Pin_1;
PORT_InitStructure.PORT_OE = PORT_OE_OUT;
PORT_InitStructure.PORT_MODE = PORT_MODE_DIGITAL;
PORT_InitStructure.PORT_SPEED = PORT_SPEED_MAXFAST;
PORT_Init(MDR_PORTB, &PORT_InitStructure);
/* ADC Configuration */
/* Reset all ADC settings */
ADC_DeInit();
DEBUG_PRINTF("ADC Init...");
// Inti clock ADC
RST_CLK_ADCclkSelection(RST_CLK_ADCclkCPU_C1);
RST_CLK_ADCclkPrescaler(RST_CLK_ADCclkDIV2);
// Enable clock ADC
RST_CLK_ADCclkEnable(ENABLE);
RST_CLK_PCLKcmd(RST_CLK_PCLK_ADC, ENABLE);
ADC_StructInit(&sADC);
sADC.ADC_StartDelay = 0;
sADC.ADC_TempSensor = ADC_TEMP_SENSOR_Enable;
sADC.ADC_TempSensorAmplifier = ADC_TEMP_SENSOR_AMPLIFIER_Enable;
sADC.ADC_TempSensorConversion = ADC_TEMP_SENSOR_CONVERSION_Disable;
sADC.ADC_IntVRefConversion = ADC_VREF_CONVERSION_Disable;
sADC.ADC_IntVRefTrimming = 0;
sADC.ADC_IntVRefAmplifier = ADC_INT_VREF_AMPLIFIER_Enable;
ADC_Init(&sADC);
ADCx_StructInit(&sADCx);
sADCx.ADC_ClockSource = ADC_CLOCK_SOURCE_CPU;
sADCx.ADC_SamplingMode = ADC_SAMPLING_MODE_CICLIC_CONV;
sADCx.ADC_ChannelSwitching = ADC_CH_SWITCHING_Disable;
sADCx.ADC_ChannelNumber = ADC_CH_ADC2;
sADCx.ADC_Channels = 0;
sADCx.ADC_LevelControl = ADC_LEVEL_CONTROL_Enable;
sADCx.ADC_LowLevel = L_Level;
sADCx.ADC_HighLevel = H_Level;
sADCx.ADC_VRefSource = ADC_VREF_SOURCE_INTERNAL;
sADCx.ADC_IntVRefSource = ADC_INT_VREF_SOURCE_INEXACT;
sADCx.ADC_Prescaler = ADC_CLK_div_16;
sADCx.ADC_DelayGo = 0xF;
ADC1_Init(&sADCx);
/* Enable ADC1 EOCIF and AWOIFEN interupts */
ADC1_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), ENABLE);
NVIC_EnableIRQ(ADC_IRQn);
/* ADC1 enable */
ADC1_Cmd(ENABLE);
while (1);
}
void InitADC()
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* Configure the ADC clock */
RCC_ADCCLKConfig( RCC_ADC34PLLCLK_Div2 );
/* Enable ADC1 clock */
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_ADC34, ENABLE );
/* ADC Channel configuration */
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOB, ENABLE );
/* Configure ADC Channel7 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init( GPIOB, &GPIO_InitStructure );
ADC_StructInit( &ADC_InitStructure );
/* Calibration procedure */
ADC_VoltageRegulatorCmd( ADC4, ENABLE );
/* Insert delay equal to 10 µs */
_delay_us( 10 );
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit( ADC4, &ADC_CommonInitStructure );
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init( ADC4, &ADC_InitStructure );
/* ADC4 regular channel3 configuration */
ADC_RegularChannelConfig( ADC4, ADC_Channel_3, 1, ADC_SampleTime_181Cycles5 );
/* Enable ADC4 */
ADC_Cmd( ADC4, ENABLE );
/* wait for ADRDY */
while( !ADC_GetFlagStatus( ADC4, ADC_FLAG_RDY ) );
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the TIM2 gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init (&NVIC_InitStructure);
/* TIM2 clock enable */
RCC_APB1PeriphClockCmd (RCC_APB1Periph_TIM2, ENABLE);
/* Time base configuration */
RCC->CFGR |= 0X1400;
TIM_TimeBaseStructure.TIM_Period = (RCC_Clocks.HCLK_Frequency/(ADCFS*ADCOVERSAMP)) - 1;
TIM_TimeBaseStructure.TIM_Prescaler = 1 - 1; // Operate at clock frequency
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit (TIM2, &TIM_TimeBaseStructure);
/* TIM IT enable */
TIM_ITConfig (TIM2, TIM_IT_Update, ENABLE);
/* TIM2 enable counter */
TIM_Cmd (TIM2, ENABLE);
/* Start ADC4 Software Conversion */
ADC_StartConversion( ADC4 );
}
void main(void)
#endif
{
RST_CLK_DeInit();
RST_CLK_CPU_PLLconfig (RST_CLK_CPU_PLLsrcHSIdiv2,0);
/* Enable peripheral clocks --------------------------------------------------*/
RST_CLK_PCLKcmd((RST_CLK_PCLK_RST_CLK | RST_CLK_PCLK_DMA | RST_CLK_PCLK_ADC),ENABLE);
RST_CLK_PCLKcmd((RST_CLK_PCLK_SSP1 | RST_CLK_PCLK_SSP2),ENABLE);
/* Disable all interrupt */
NVIC->ICPR[0] = 0xFFFFFFFF;
NVIC->ICER[0] = 0xFFFFFFFF;
/* DMA Configuration */
/* Reset all settings */
DMA_DeInit();
DMA_StructInit(&DMA_InitStr);
/* Set Primary Control Data */
DMA_PriCtrlStr.DMA_SourceBaseAddr = (uint32_t)(&(MDR_ADC->ADC1_RESULT));
DMA_PriCtrlStr.DMA_DestBaseAddr = (uint32_t)ADCConvertedValue;
DMA_PriCtrlStr.DMA_SourceIncSize = DMA_SourceIncNo;
DMA_PriCtrlStr.DMA_DestIncSize = DMA_DestIncHalfword;
DMA_PriCtrlStr.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_PriCtrlStr.DMA_Mode = DMA_Mode_PingPong;
DMA_PriCtrlStr.DMA_CycleSize = 10;
DMA_PriCtrlStr.DMA_NumContinuous = DMA_Transfers_1;
DMA_PriCtrlStr.DMA_SourceProtCtrl = DMA_SourcePrivileged;
DMA_PriCtrlStr.DMA_DestProtCtrl = DMA_DestPrivileged;
/* Set Alternate Control Data */
DMA_AltCtrlStr.DMA_SourceBaseAddr = (uint32_t)(&(MDR_ADC->ADC1_RESULT));
DMA_AltCtrlStr.DMA_DestBaseAddr = (uint32_t)ADCConvertedValue;
DMA_AltCtrlStr.DMA_SourceIncSize = DMA_SourceIncNo;
DMA_AltCtrlStr.DMA_DestIncSize = DMA_DestIncHalfword;
DMA_AltCtrlStr.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_AltCtrlStr.DMA_Mode = DMA_Mode_PingPong;
DMA_AltCtrlStr.DMA_CycleSize = 10;
DMA_AltCtrlStr.DMA_NumContinuous = DMA_Transfers_1;
DMA_AltCtrlStr.DMA_SourceProtCtrl = DMA_SourcePrivileged;
DMA_AltCtrlStr.DMA_DestProtCtrl = DMA_DestPrivileged;
/* Set Channel Structure */
DMA_InitStr.DMA_PriCtrlData = &DMA_PriCtrlStr;
DMA_InitStr.DMA_AltCtrlData = &DMA_AltCtrlStr;
DMA_InitStr.DMA_Priority = DMA_Priority_Default;
DMA_InitStr.DMA_UseBurst = DMA_BurstClear;
DMA_InitStr.DMA_SelectDataStructure = DMA_CTRL_DATA_PRIMARY;
/* Init DMA channel ADC1 */
DMA_Init(DMA_Channel_ADC1, &DMA_InitStr);
/* Enable dma_req or dma_sreq to generate DMA request */
MDR_DMA->CHNL_REQ_MASK_CLR = (1<<DMA_Channel_ADC1);
MDR_DMA->CHNL_USEBURST_CLR = (1<<DMA_Channel_ADC1);
/* Enable DMA channel ADC1 */
DMA_Cmd(DMA_Channel_ADC1, ENABLE);
/* ADC Configuration */
/* Reset all ADC settings */
ADC_DeInit();
ADC_StructInit(&sADC);
sADC.ADC_SynchronousMode = ADC_SyncMode_Independent;
sADC.ADC_StartDelay = 0;
sADC.ADC_TempSensor = ADC_TEMP_SENSOR_Enable;
sADC.ADC_TempSensorAmplifier = ADC_TEMP_SENSOR_AMPLIFIER_Enable;
sADC.ADC_TempSensorConversion = ADC_TEMP_SENSOR_CONVERSION_Enable;
sADC.ADC_IntVRefConversion = ADC_VREF_CONVERSION_Disable;
sADC.ADC_IntVRefTrimming = 1;
ADC_Init (&sADC);
/* ADC1 Configuration */
ADCx_StructInit (&sADCx);
sADCx.ADC_ClockSource = ADC_CLOCK_SOURCE_CPU;
sADCx.ADC_SamplingMode = ADC_SAMPLING_MODE_CICLIC_CONV;
sADCx.ADC_ChannelSwitching = ADC_CH_SWITCHING_Disable;
sADCx.ADC_ChannelNumber = ADC_CH_TEMP_SENSOR;
sADCx.ADC_Channels = 0;
sADCx.ADC_LevelControl = ADC_LEVEL_CONTROL_Disable;
sADCx.ADC_LowLevel = 0;
sADCx.ADC_HighLevel = 0;
sADCx.ADC_VRefSource = ADC_VREF_SOURCE_INTERNAL;
sADCx.ADC_IntVRefSource = ADC_INT_VREF_SOURCE_INEXACT;
sADCx.ADC_Prescaler = ADC_CLK_div_512;
sADCx.ADC_DelayGo = 7;
ADC1_Init (&sADCx);
/* Enable ADC1 EOCIF and AWOIFEN interupts */
ADC1_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), DISABLE);
/* ADC1 enable */
ADC1_Cmd (ENABLE);
/* Enable DMA IRQ */
NVIC_EnableIRQ(DMA_IRQn);
while(1);
}
/**
* @brief analogRead Read GPIO Arduino pin value
* @param pin number
* @retval 0 to max STM32 ADC value
*/
uint16_t analogRead(uint16_t pin){
uint16_t L_oldType = ArduinoPort[pin].PinMode; //Does the pin already configured?
uint32_t L_adcChannel;
uint16_t L_ADCConvertedValue=0;
/* Check the parameters */
assert_param(IS_ADC_PIN(pin));
switch(pin){
//pin to configure or to get value from
case A0:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
L_adcChannel = ADC_Channel_10;
break;
case A1:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
L_adcChannel = ADC_Channel_11;
break;
case A2:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
L_adcChannel = ADC_Channel_12;
break;
case A3:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
L_adcChannel = ADC_Channel_13;
break;
case A4:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
L_adcChannel = ADC_Channel_14;
break;
case A5:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
L_adcChannel = ADC_Channel_15;
break;
default:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
L_adcChannel = ADC_Channel_10;
break;
}
if(L_oldType != INPUT_AN) {
//Pin was not correctly configured! Do it first!
//ADC Config
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_DeInit(ADC1);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
/* GPIOC config for ADC */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
//Config pin as AN
GPIO_Init(GPIOC, &GPIO_InitStructure);
//Config ADC
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);
ADC_Cmd(ADC1, ENABLE);
/* Wait the ADCEN falg */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));
//Pin is configured as ADC INPUT now.
ArduinoPort[pin].PinMode = INPUT_AN;
}
//Select channel to scan
ADC_ChannelConfig(ADC1, L_adcChannel , ADC_SampleTime_239_5Cycles);
// ADC1 regular Software Start Conv
ADC_StartOfConversion(ADC1);
// Wait for end of conversion
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
//Get value
L_ADCConvertedValue = ADC_GetConversionValue(ADC1);
//Stop conversion and return ADC value.
ADC_StopOfConversion(ADC1);
return(L_ADCConvertedValue);
}
void adcInit(drv_adc_config_t *init)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
uint8_t i;
uint8_t adcChannelCount = 0;
memset(&adcConfig, 0, sizeof(adcConfig));
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
#ifdef ADC0_GPIO
if (init->channelMask & ADC_CHANNEL0_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC0_GPIO_PIN;
GPIO_Init(ADC0_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL0].adcChannel = ADC0_CHANNEL;
adcConfig[ADC_CHANNEL0].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL0].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL0].enabled = true;
adcChannelCount++;
}
#endif
#ifdef ADC1_GPIO
if (init->channelMask & ADC_CHANNEL1_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC1_GPIO_PIN;
GPIO_Init(ADC1_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL1].adcChannel = ADC1_CHANNEL;
adcConfig[ADC_CHANNEL1].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL1].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL1].enabled = true;
adcChannelCount++;
}
#endif
#ifdef ADC2_GPIO
if (init->channelMask & ADC_CHANNEL2_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC2_GPIO_PIN;
GPIO_Init(ADC2_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL2].adcChannel = ADC2_CHANNEL;
adcConfig[ADC_CHANNEL2].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL2].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL2].enabled = true;
adcChannelCount++;
}
#endif
#ifdef ADC3_GPIO
if (init->channelMask & ADC_CHANNEL3_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC3_GPIO_PIN;
GPIO_Init(ADC3_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL3].adcChannel = ADC3_CHANNEL;
adcConfig[ADC_CHANNEL3].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL3].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL3].enabled = true;
adcChannelCount++;
}
#endif
#ifdef ADC4_GPIO
if (init->channelMask & ADC_CHANNEL4_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC4_GPIO_PIN;
GPIO_Init(ADC4_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL4].adcChannel = ADC4_CHANNEL;
adcConfig[ADC_CHANNEL4].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL4].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL4].enabled = true;
adcChannelCount++;
}
#endif
#ifdef ADC5_GPIO
if (init->channelMask & ADC_CHANNEL5_ENABLE) {
GPIO_InitStructure.GPIO_Pin = ADC5_GPIO_PIN;
GPIO_Init(ADC5_GPIO, &GPIO_InitStructure);
adcConfig[ADC_CHANNEL5].adcChannel = ADC5_CHANNEL;
adcConfig[ADC_CHANNEL5].dmaIndex = adcChannelCount;
adcConfig[ADC_CHANNEL5].sampleTime = ADC_SampleTime_601Cycles5;
adcConfig[ADC_CHANNEL5].enabled = true;
adcChannelCount++;
}
#endif
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div256); // 72 MHz divided by 256 = 281.25 kHz
RCC_AHBPeriphClockCmd(ADC_AHB_PERIPHERAL | RCC_AHBPeriph_ADC12, ENABLE);
DMA_DeInit(ADC_DMA_CHANNEL);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC_INSTANCE->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcValues;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = adcChannelCount;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = adcChannelCount > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(ADC_DMA_CHANNEL, &DMA_InitStructure);
DMA_Cmd(ADC_DMA_CHANNEL, ENABLE);
// calibrate
ADC_VoltageRegulatorCmd(ADC_INSTANCE, ENABLE);
delay(10);
ADC_SelectCalibrationMode(ADC_INSTANCE, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC_INSTANCE);
while(ADC_GetCalibrationStatus(ADC_INSTANCE) != RESET);
ADC_VoltageRegulatorCmd(ADC_INSTANCE, DISABLE);
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_SynClkModeDiv4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_Circular;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC_INSTANCE, &ADC_CommonInitStructure);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = adcChannelCount;
ADC_Init(ADC_INSTANCE, &ADC_InitStructure);
uint8_t rank = 1;
for (i = 0; i < ADC_CHANNEL_COUNT; i++) {
if (!adcConfig[i].enabled) {
continue;
}
ADC_RegularChannelConfig(ADC_INSTANCE, adcConfig[i].adcChannel, rank++, adcConfig[i].sampleTime);
}
ADC_Cmd(ADC_INSTANCE, ENABLE);
while(!ADC_GetFlagStatus(ADC_INSTANCE, ADC_FLAG_RDY));
ADC_DMAConfig(ADC_INSTANCE, ADC_DMAMode_Circular);
ADC_DMACmd(ADC_INSTANCE, ENABLE);
ADC_StartConversion(ADC_INSTANCE);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f30x.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f30x.c file
*/
/* Configure the ADC clock */
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);
/* Enable ADC1 clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
/* Setup SysTick Timer for 1 µsec interrupts */
if (SysTick_Config(SystemCoreClock / 1000000))
{
/* Capture error */
while (1)
{}
}
/* ADC Channel configuration */
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
/* Configure ADC Channel7 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
ADC_StructInit(&ADC_InitStructure);
/* Calibration procedure */
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
/* Insert delay equal to 10 µs */
Delay(10);
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET );
calibration_value = ADC_GetCalibrationValue(ADC1);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel7 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 1, ADC_SampleTime_7Cycles5);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* wait for ADRDY */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));
/* Start ADC1 Software Conversion */
ADC_StartConversion(ADC1);
/* Infinite loop */
while (1)
{
/* Test EOC flag */
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
/* Get ADC1 converted data */
ADC1ConvertedValue =ADC_GetConversionValue(ADC1);
/* Compute the voltage */
ADC1ConvertedVoltage = (ADC1ConvertedValue *3300)/0xFFF;
/* Display converted data on the LCD */
Display();
}
}
/*******************************************************************************
* Function Name : CurrentReading_ADC_Init
* Description : It initializes ADC peripherals
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void CurrentReading_ADC_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
/* ADC1, ADC2, DMA, GPIO clocks enabling -----------------------------*/
/* ADCCLK = PCLK2/6=12M */
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
/* Enable GPIOA, GPIOC, GPIOE, AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOC,ENABLE);
/* Enable ADC1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* Enable ADC2 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
/* ADC1, ADC2, PWM pins configurations -------------------------------*/
/* PC0->温度ch10，PC1->Ia ch11,PC2->Ib ch12,PC3->Ic ch13,PC4->电位器 ch14 */
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 |GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* PA3->DC_BUS ch3 */
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* ADC1、ADC2 registers reset -----------*/
ADC_DeInit(ADC1);
ADC_DeInit(ADC2);
/* Enable ADC1、ADC2 */
ADC_Cmd(ADC1, ENABLE);
ADC_Cmd(ADC2, ENABLE);
/* ADC1 configuration ------------------*/
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_InjecSimult;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Left;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC2 Configuration ------------------------------------------------------*/
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Left;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC2, &ADC_InitStructure);
// Start calibration of ADC1、ADC2
ADC_StartCalibration(ADC1);
ADC_StartCalibration(ADC2);
// Wait for the end of ADC1、ADC2 calibration
while (ADC_GetCalibrationStatus(ADC1) & ADC_GetCalibrationStatus(ADC2)) {}
}