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最近在探讨Stm32F429的三ADC同步触发，一直搞不定
想要问各位有啥建议功能是每1us同步触发3个ADC（例如ADC1量PF4，ADC2量PB0，ADC3量PF6），以下是程式码
可以告訴我哪裡寫得有誤嗎? 感謝
-------------------------------------------------- -------------------------------------------------- ---------------------------------
#define Number 100000 //資料筆數
#define Fs 1000000 //取樣率
uint16_t *uhADCxConvertedValue1 = (uint16_t *)(0xD0000000);
-------------------------------------------------- -------------------------------------------------- ---------------------------------
void TIM_Config(void)
{
TIM_MasterConfigTypeDef sMasterConfig;
/* Set TIMx instance */
htim8.Instance = TIM8;
htim8.Init.Period = ((SystemCoreClock)/Fs) - 1;;
htim8.Init.Prescaler = 0;
htim8.Init.ClockDivision = 0;
htim8.Init.CounterMode = TIM_COUNTERMODE_UP;
htim8.Init.RepetitionCounter = 0x0;
if(HAL_TIM_Base_Init(&htim8) != HAL_OK)
{
/* TIM8 Initiliazation Error */
}
/* TIM8 TRGO selection */
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if(HAL_TIMEx_MasterConfigSynchronization(&htim8, &sMasterConfig) != HAL_OK)
{
/* TIM8 TRGO selection Error */
while(1);
}
}
/* ADC1 init function */
void MX_ADC1_Init(void)
{
ADC_MultiModeTypeDef multimode;
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
hadc1.Init.Resolution = ADC_RESOLUTION12b;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T8_TRGO;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DMAContinuousRequests = ENABLE;
hadc1.Init.EOCSelection = EOC_SINGLE_CONV;
HAL_ADC_Init(&hadc1);
/**Configure the ADC multi-mode
*/
multimode.Mode = ADC_TRIPLEMODE_ALTERTRIG;
multimode.DMAAccessMode = ADC_DMAACCESSMODE_1;
multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_5CYCLES;
HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode);
/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
*/
sConfig.Channel = ADC_CHANNEL_4;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);
}
/* ADC2 init function */
void MX_ADC2_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc2.Instance = ADC2;
hadc2.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
hadc2.Init.Resolution = ADC_RESOLUTION12b;
hadc2.Init.ScanConvMode = DISABLE;
hadc2.Init.ContinuousConvMode = DISABLE;
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc2.Init.NbrOfConversion = 1;
hadc2.Init.DMAContinuousRequests = ENABLE;
hadc2.Init.EOCSelection = EOC_SINGLE_CONV;
HAL_ADC_Init(&hadc2);
/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
*/
sConfig.Channel = ADC_CHANNEL_8;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
HAL_ADC_ConfigChannel(&hadc2, &sConfig);
}
/* ADC3 init function */
void MX_ADC3_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc3.Instance = ADC3;
hadc3.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
hadc3.Init.Resolution = ADC_RESOLUTION12b;
hadc3.Init.ScanConvMode = DISABLE;
hadc3.Init.ContinuousConvMode = DISABLE;
hadc3.Init.DiscontinuousConvMode = DISABLE;
hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc3.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc3.Init.NbrOfConversion = 1;
hadc3.Init.DMAContinuousRequests = ENABLE;
hadc3.Init.EOCSelection = EOC_SINGLE_CONV;
HAL_ADC_Init(&hadc3);
/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
*/
sConfig.Channel = ADC_CHANNEL_4;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
HAL_ADC_ConfigChannel(&hadc3, &sConfig);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to have a system clock = 144 Mhz */
SystemClock_Config();
BSP_SDRAM_Init(); /* Initializes the SDRAM device */
/* Configure LED1 */
BSP_LED_Init(LED1);
UART_Config();
TIM_Config();
MX_ADC1_Init();
MX_ADC2_Init();
MX_ADC3_Init();
/*##-8- Start ADC3 conversion process ######################################*/
if(HAL_ADC_Start(&hadc3) != HAL_OK)
{
/* Start Error */
Error_Handler();
}
/*##-9- Start ADC2 conversion process ######################################*/
if(HAL_ADC_Start(&hadc2) != HAL_OK)
{
/* Start Error */
Error_Handler();
}
/*##-10- Start ADC1 conversion process and enable DMA #######################*/
if(HAL_ADCEx_MultiModeStart_DMA(&hadc1, (uint32_t*)uhADCxConvertedValue1, Number/2) != HAL_OK)
{
/* Start Error */
Error_Handler();
}
/*##-3- TIM8 counter enable ################################################*/ /
HAL_TIM_Base_Start(&htim8);
while(completeflag == 0);
Save_to_SD();
BSP_LED_On(LED1);
/* Infinite loop */
while (1);
}
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
{
HAL_ADC_Stop_DMA(AdcHandle);
HAL_TIM_Base_Stop(&htim8);
completeflag ++;
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
GPIO_InitTypeDef GPIO_InitStruct;
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* Enable GPIO clock */
__GPIOA_CLK_ENABLE(); __GPIOF_CLK_ENABLE(); __GPIOB_CLK_ENABLE();
/* ADC3 Periph clock enable */
__ADC1_CLK_ENABLE(); __ADC3_CLK_ENABLE(); __ADC2_CLK_ENABLE();
/* Enable DMA2 clock */
DMAx_CLK_ENABLE();
/*##-2- Configure peripheral GPIO ##########################################*/
/* ADC1 Channel8 GPIO pin configuration */
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(ADCx_CHANNEL_GPIO_PORT, &GPIO_InitStruct);
/* ADC2 Channel8 GPIO pin configuration */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* ADC3 Channel8 GPIO pin configuration */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
/*##-3- Configure the DMA streams ##########################################*/
hdma_adc1.Instance = DMA2_Stream4;
hdma_adc1.Init.Channel = DMA_CHANNEL_0;
hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_adc1.Init.Mode = DMA_NORMAL;
hdma_adc1.Init.Priority = DMA_PRIORITY_HIGH;
hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_adc1.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_HALFFULL;
hdma_adc1.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_adc1.Init.PeriphBurst = DMA_PBURST_SINGLE;
HAL_DMA_Init(&hdma_adc1);
/* Associate the initialized DMA handle to the the ADC handle */
__HAL_LINKDMA(hadc, DMA_Handle, hdma_adc1);
/*##-4- Configure the NVIC for DMA #########################################*/
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(DMA2_Stream4_IRQn, 0, 1);
HAL_NVIC_EnableIRQ(DMA2_Stream4_IRQn);
} |
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发表于 2016-12-27 14:17:17
发表于 2016-12-27 16:01:28
