/**
* @brief Configures the ADC1 channel5.
* @param None
* @retval None
*/
void ADC_Config(void)
{
/* Enable The HSI (16Mhz) */
RCC_HSICmd(ENABLE);
/* Enable the GPIOF or GPIOA Clock */
RCC_AHBPeriphClockCmd(IDD_MEASUREMENT_GPIO_CLK, ENABLE);
/* Configure PF.11 (ADC Channel11) or PA.05 (ADC Channe5) in analog mode */
GPIO_InitStructure.GPIO_Pin = IDD_MEASUREMENT_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(IDD_MEASUREMENT_GPIO, &GPIO_InitStructure);
/* Check that HSI oscillator is ready */
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
/* ADC1 Configuration ------------------------------------------------------*/
/* Enable ADC1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
#ifdef USE_STM32L152D_EVAL
/* Select ADC Bank channel */
ADC_BankSelection(ADC1, ADC_Bank_B);
#endif
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel5 or channel1 configuration */
ADC_RegularChannelConfig(ADC1, IDD_MEASUREMENT_ADC_CHANNEL, 1, ADC_SampleTime_192Cycles);
/* Define delay between ADC1 conversions */
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
/* Enable ADC1 Power Down during Delay */
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait until ADC1 ON status */
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)
{
}
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConv(ADC1);
/* Wait until ADC Channel 5 or 1 end of conversion */
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET)
{
}
}
uint16_t AdcMcuRead( Adc_t *obj, uint8_t channel )
{
uint16_t adcData = 0;
/* 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 );
// Temperature or Vref measurement
if( ( channel == ADC_Channel_16 ) || ( channel == ADC_Channel_17 ) )
{
// Yes, enable temperature sensor and internal reference voltage
ADC_TempSensorVrefintCmd( ENABLE );
}
// Configure selected channel
ADC_RegularChannelConfig( ADC1, channel, 1, ADC_SampleTime_192Cycles );
/* Define delay between ADC1 conversions */
ADC_DelaySelectionConfig( ADC1, ADC_DelayLength_Freeze );
/* Enable ADC1 Power Down during Delay */
ADC_PowerDownCmd( ADC1, ADC_PowerDown_Idle_Delay, ENABLE );
/* Enable ADC1 */
ADC_Cmd( ADC1, ENABLE );
/* Wait until ADC1 ON status */
while( ADC_GetFlagStatus( ADC1, ADC_FLAG_ADONS ) == RESET )
{
}
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConv( ADC1 );
/* Wait until ADC Channel 5 or 1 end of conversion */
while( ADC_GetFlagStatus( ADC1, ADC_FLAG_EOC ) == RESET )
{
}
adcData = ADC_GetConversionValue( ADC1 );
ADC_Cmd( ADC1, DISABLE );
if( ( channel == ADC_Channel_16 ) || ( channel == ADC_Channel_17 ) )
{
// De-initialize ADC
ADC_TempSensorVrefintCmd( DISABLE );
}
RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, DISABLE );
RCC_HSICmd( DISABLE );
return adcData;
}
/**
* @brief ADC configuration for automatic IDD measurement.
* @param None
* @retval None
*/
void IDD_Measurement_ADC_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOA Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/* Configure IDD Measurement pin (ADC Channelxx) as analog input -----------*/
GPIO_InitStructure.GPIO_Pin = IDD_MEASUREMENT_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_Init(IDD_MEASUREMENT_GPIO_PORT, &GPIO_InitStructure);
/* ADC1 configuration --------------------------------------------------------*/
/* Enable HSI clock for ADC clock */
RCC_HSICmd(ENABLE);
/*!< Wait till HSI is ready */
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
{}
/* Enable ADC clock ----------------------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* de-initialize ADC ---------------------------------------------------------*/
ADC_DeInit(ADC1);
/* ADC configured as follows:
- NbrOfChannel = 1 - ADC_Channel_5
- Mode = Single ConversionMode(ContinuousConvMode Enabled)
- Resolution = 12Bits
- Prescaler = /1
- Sampling time 192 */
/* ADC Configuration */
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel4 configuration */
ADC_RegularChannelConfig(ADC1, IDD_MEASUREMENT_ADC_CHANNEL, 1, ADC_SampleTime_192Cycles);
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait until ADC1 ON status */
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)
{
}
}
/**
* @brief ADC initialization (ADC_Channel_4)
* @caller main and ADC_Icc_Test
* @param None
* @retval None
*/
void ADC_Icc_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
/* Enable ADC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* de-initialize ADC */
ADC_DeInit(ADC1);
/* ADC configured as follow:
- NbrOfChannel = 1 - ADC_Channel_4
- Mode = Single ConversionMode(ContinuousConvMode disabled)
- Resolution = 12Bits
- Prescaler = /1
- sampling time 192 */
/* ADC Configuration */
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_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel4 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_192Cycles);
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait until ADC1 ON status */
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)
{
}
}
void setup_adc(void)
{
// Setup an adc...
ADC_InitTypeDef adcinit;
/* Enable ADC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
//ADC_DeInit(ADC1);
// all defaults...
ADC_StructInit(&adcinit);
ADC_Init(ADC1, &adcinit);
//ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 1, ADC_SampleTime_192Cycles);
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait until ADC1 ON status */
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)
;
}
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 );
}
/**
* @brief Configures the ADC1: channel (18 or 31) and channel (5 or 1b).
* @param None
* @retval None
*/
void ADC_Config(void)
{
/* Enable The HSI (16Mhz) */
RCC_HSICmd(ENABLE);
/* Check that HSI oscillator is ready */
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
/* Configure RV3 input voltage */
/* Enable the GPIOF Clock */
RCC_AHBPeriphClockCmd(IDD_MEASUREMENT_GPIO_CLK, ENABLE);
/* Configure PF.10 (ADC Channel31) or PA.12 (ADC channel 18) in analog mode */
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_X;
GPIO_Init(IDD_MEASUREMENT_GPIO, &GPIO_InitStructure);
/* Configure the IDD input */
/* Configure PF.11 (ADC channel 1b) or PA.05 (ADC channel 5) in analog mode */
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_Y;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(IDD_MEASUREMENT_GPIO, &GPIO_InitStructure);
/* ADC1 Configuration ------------------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* ADC1 DeInit */
ADC_DeInit(ADC1);
#ifdef USE_STM32L152D_EVAL
/* Select ADC Bank channel */
ADC_BankSelection(ADC1, ADC_Bank_B);
#endif
/* ADC1 Configuration of channel18/31 and channel5/1b : continuous mode, external trigger (TIM2) */
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Falling;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 2;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 Regular Channel Config */
ADC_RegularChannelConfig(ADC1, IDD_MEASUREMENT_ADC_CHANNEL, 1, ADC_SampleTime_192Cycles);
ADC_RegularChannelConfig(ADC1, RV3_MEASUREMENT_ADC_CHANNEL, 2, ADC_SampleTime_192Cycles);
/* Enables the ADC1 Power Down during Delay */
ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);
/* Delay until the converted data has been read */
ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait until the ADC1 is ready */
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)
{
}
}
/* 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);
}
