void SampleChannel_Init()
{
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA| RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = ADC_CHANNEL10_PIN | ADC_CHANNEL11_PIN
| ADC_CHANNEL12_PIN | ADC_CHANNEL14_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //端口模式为模拟输入方式
GPIO_Init(ADC_PORT, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);
TIM_DeInit(TIM8);
TIM_TimeBaseStructure.TIM_Period = 1000000 / 1000 - 1;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
TIM_SelectOutputTrigger(TIM8, TIM_TRGOSource_Update);
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_ADC1_ETRGREG, ENABLE);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 4;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_71Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 2, ADC_SampleTime_71Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 3, ADC_SampleTime_71Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 4, ADC_SampleTime_71Cycles5);
ADC_DiscModeChannelCountConfig(ADC1, 1);
ADC_DiscModeCmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1))
;
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1))
;
ADC_ExternalTrigConvCmd(ADC1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_ADDRESS;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32) (&ADCBuff);
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = ADCNUM;
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_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
DMA_ClearFlag(DMA1_IT_TC1 | DMA1_IT_HT1);
DMA_ITConfig(DMA1_Channel1, DMA_IT_TC | DMA_IT_HT, ENABLE);
DMA_Cmd(DMA1_Channel1, ENABLE);
}
void ADC_Conf(){
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
// GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// ADCの設定
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonStructInit(&ADC_CommonInitStructure);
ADC_CommonInitStructure.ADC_Mode = ADC_DualMode_RegSimult;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_2;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);
// ADC1の設定
ADC_InitTypeDef ADC_InitStructure;
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC3;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = nADC; // 変換回数
ADC_Init(ADC1, &ADC_InitStructure);
// ADC2の設定
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_Init(ADC2, &ADC_InitStructure);
ADC_DiscModeChannelCountConfig(ADC1, 1);
ADC_DiscModeCmd(ADC1, ENABLE);
ADC_DiscModeChannelCountConfig(ADC2, 1);
ADC_DiscModeCmd(ADC2, ENABLE);
// AD変換チャネルなどの設定
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 2, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 3, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_10, 1, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 2, ADC_SampleTime_144Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_12, 3, ADC_SampleTime_144Cycles);
// タイマのカウンタの設定値を計算する
uint32_t clock;
RCC_ClocksTypeDef RCC_Clocks;
RCC_GetClocksFreq(&RCC_Clocks);
if(RCC_Clocks.HCLK_Frequency == RCC_Clocks.PCLKx_Frequency_autoADC)
clock = RCC_Clocks.PCLKx_Frequency_autoADC;
else
clock = RCC_Clocks.PCLKx_Frequency_autoADC * 2;
uint16_t preDMAC_trig = 2;
uint16_t ADC_trig = dt_preADC * clock + preDMAC_trig;
uint16_t postDMAC_trig = dt_postADC * clock + ADC_trig;
uint16_t ADC_period = dt_int * clock / nDMAC_ADC;
// エラーチェック
if(ADC_trig > ADC_period || postDMAC_trig > ADC_period) while(1);
// AD変換とポート出力制御用タイマの設定
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = ADC_period - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// AD変換タイミング (CC3)
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = ADC_trig - 1;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_CtrlPWMOutputs(TIM1, ENABLE);
// AD変換前DMA転送タイミング (CC1)
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
TIM_OCInitStructure.TIM_Pulse = preDMAC_trig - 1;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
// AD変換後DMA転送タイミング (CC2)
TIM_OCInitStructure.TIM_Pulse = postDMAC_trig - 1;
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
// DMAC起動許可
TIM_DMACmd(TIM1, TIM_DMA_CC1, ENABLE);
TIM_DMACmd(TIM1, TIM_DMA_CC2, ENABLE);
// regular group変換後データ転送用DMACの設定
DMA_InitTypeDef DMA_InitStructure;
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_Channel = DMA_Channel_x_endADC_autoADC;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(ADC->CDR));
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)ADC_result;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = nDMAC_ADC; // 転送回数
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
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_Medium;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMAx_StreamY_endADC_autoADC, &DMA_InitStructure);
// ADCの有効化
ADC_Cmd(ADC1, ENABLE);
ADC_Cmd(ADC2, ENABLE);
// Enable DMA
DMA_Cmd(DMAx_StreamY_endADC_autoADC, ENABLE);
DMA_Cmd(DMAx_StreamY_preADC_OUT_autoADC, ENABLE);
DMA_Cmd(DMAx_StreamY_postADC_OUT_autoADC, ENABLE);
// タイマ動作開始
TIM_Cmd(TIM1, ENABLE);
}
/**
* @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_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* EXTI configuration ------------------------------------------------------*/
EXTI_Configuration();
/* DMA1 channel1 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 64;
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);
/* Enable DMA1 channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 2;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channels configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_28Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 2, ADC_SampleTime_28Cycles5);
/* Regular discontinuous mode channel number configuration */
ADC_DiscModeChannelCountConfig(ADC1, 1);
/* Enable regular discontinuous mode */
ADC_DiscModeCmd(ADC1, ENABLE);
/* Enable ADC1 external trigger conversion */
ADC_ExternalTrigConvCmd(ADC1, ENABLE);
/* Set injected sequencer length */
ADC_InjectedSequencerLengthConfig(ADC1, 2);
/* ADC1 injected channel configuration */
ADC_InjectedChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_28Cycles5);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_12, 2, ADC_SampleTime_28Cycles5);
/* ADC1 injected external trigger configuration */
ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_Ext_IT15_TIM8_CC4);
/* Enable ADC1 injected external trigger conversion */
ADC_ExternalTrigInjectedConvCmd(ADC1, ENABLE);
/* Enable JEOC interrupt */
ADC_ITConfig(ADC1, ADC_IT_JEOC, ENABLE);
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 reset calibration register */
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibration */
ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));
while (1)
{
}
}
