Posted on May 20, 2014 at 09:37 Hey Hal,
My code was generated with STM32Cube (I have attached the project file).
In the options of the project, I delete optimizations of the code.
Here is the function main with my user code:
int main(void)
{
/* USER CODE BEGIN 1 */
uint8_t i = 0;
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC1_Init();
MX_I2S2_Init();
MX_TIM1_Init();
MX_TIM2_Init();
MX_USART3_UART_Init();
/* USER CODE BEGIN 2 */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_14, GPIO_PIN_SET);
HAL_ADC_Start_IT(&hadc1);
HAL_TIM_OC_Start(&htim2, TIM_CHANNEL_1);
/* USER CODE END 2 */
/* USER CODE BEGIN 3 */
/* Infinite loop */
while (1)
{
}
/* USER CODE END 3 */
}
Here is the callback of my ADC interrupt:
/* USER CODE BEGIN 0 */
#define NB_MEAN_SAMPLE_PHOTODIODE 10000.0
uint8_t sEndRecord = 0;
float sMeanPhotodiodePower = 0;
uint8_t sDetectObject = 0;
uint16_t sNbSamplePhotodiode = 0;
float wADCValue = 0.0;
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
if(sNbSamplePhotodiode < NB_MEAN_SAMPLE_PHOTODIODE)
{
sMeanPhotodiodePower = HAL_ADC_GetValue(hadc)/NB_MEAN_SAMPLE_PHOTODIODE + sMeanPhotodiodePower;
sNbSamplePhotodiode ++;
}
else
{
if ((wADCValue=(float)HAL_ADC_GetValue(hadc))<(sMeanPhotodiodePower-30))
{
sDetectObject ++;
}
else
{
sDetectObject = 0;
}
}
}
With this simple project, we can just enter once in the ADC interrupt.
But If, for example, I comment
if ((wADCValue=(float)HAL_ADC_GetValue(hadc))<(sMeanPhotodiodePower-30))
{
sDetectObject ++;
}
else
{
sDetectObject = 0;
}
My ADC interrupt is periodically called.
This workstooby commenting the configuration of an I/O
For example this I/O:
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
Thanks for your interest,
________________
Attachments : MainProject.ioc :
https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0nZ&d=%2Fa%2F0X0000000bdm%2FfqwxhhCK5QAmQ.qMgTT00tFwVEoGEBsiuF6BLqPr7jQ&asPdf=false
