Posted on June 24, 2014 at 08:43Dear Clive 1,
Yes, I did enable a interup of ADC_DMA, but how to add a IRQHandler in stm32f4xx_it.c? The following is some code in ADC_DMA:
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/* Definition for ADCx clock resources */
#define ADCx ADC3
#define ADCx_CLK_ENABLE() __ADC3_CLK_ENABLE()
#define DMAx_CLK_ENABLE() __DMA2_CLK_ENABLE()
#define ADCx_CHANNEL_GPIO_CLK_ENABLE() __GPIOC_CLK_ENABLE()
#define ADCx_FORCE_RESET() __ADC_FORCE_RESET()
#define ADCx_RELEASE_RESET() __ADC_RELEASE_RESET()
/* Definition for ADCx Channel Pin */
#define ADCx_CHANNEL_PIN GPIO_PIN_3
#define ADCx_CHANNEL_GPIO_PORT GPIOC
/* Definition for ADCx's Channel */
#define ADCx_CHANNEL ADC_CHANNEL_13
/* Definition for ADCx's DMA */
#define ADCx_DMA_CHANNEL DMA_CHANNEL_2
#define ADCx_DMA_STREAM DMA2_Stream0
/* Definition for ADCx's NVIC */
#define ADCx_DMA_IRQn DMA2_Stream0_IRQn
#define ADCx_DMA_IRQHandler DMA2_Stream0_IRQHandler
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup ADC_RegularConversion_DMA
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* ADC handler declaration */
ADC_HandleTypeDef AdcHandle;
/* Variable used to get converted value */
__IO uint16_t uhADCxConvertedValue=1;
/* Private function prototypes -----------------------------------------------*/
//static void SystemClock_Config(void);
static void Error_Handler(void);
extern float Efact ;
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
void ADCmain(void)
{
ADC_ChannelConfTypeDef sConfig;
/* 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();
/* Configure LED3 and LED4 */
// BSP_LED_Init(LED3);
// BSP_LED_Init(LED4);
/*##-1- Configure the ADC peripheral #######################################*/
AdcHandle.Instance = ADCx;
AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
AdcHandle.Init.ScanConvMode = DISABLE;
AdcHandle.Init.ContinuousConvMode = ENABLE;
AdcHandle.Init.DiscontinuousConvMode = DISABLE;
AdcHandle.Init.NbrOfDiscConversion = 0;
AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
AdcHandle.Init.NbrOfConversion = 1;
AdcHandle.Init.DMAContinuousRequests = ENABLE;
AdcHandle.Init.EOCSelection = DISABLE;
if(HAL_ADC_Init(&AdcHandle) != HAL_OK)
{
/* Initiliazation Error */
Error_Handler();
}
/*##-2- Configure ADC regular channel ######################################*/
sConfig.Channel = ADCx_CHANNEL;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
sConfig.Offset = 0;
~~~~~~~~~~~~~~~~~~`
Thanks a lot
