关于STM32L052采样AD中断遇到奇怪问题
前天STM32L052采样AD双通道切换问题，解决。void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
{
/* Get the converted value of regular channel */
uwADCxConvertedValue = HAL_ADC_GetValue(AdcHandle);
HAL_ADC_Stop_IT(&hadc);
if(CH_dp==0)
{
CH_dp=1;
ADC1->CHSELR = ADC_CHANNEL_2;
}
else
{
CH_dp=0;
ADC1->CHSELR = ADC_CHANNEL_7;
}
HAL_ADC_Start_IT(&hadc);
UART_Transmit_IT(&huart1, (uint8_t*)uwADCxConvertedValue, 4);
}
但我发现把AD中断中的发送命令屏蔽掉就进不了AD中断
我程序，只用到AD、串口、TIM21中断，不可能出现死循环。 /* ADC init function */
void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
hadc.Instance = ADC1;
hadc.Init.OversamplingMode = ENABLE;
hadc.Init.Oversample.Ratio = ADC_OVERSAMPLING_RATIO_128;
hadc.Init.Oversample.RightBitShift = ADC_RIGHTBITSHIFT_3;
hadc.Init.Oversample.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1;
hadc.Init.Resolution = ADC_RESOLUTION12b;
hadc.Init.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.ContinuousConvMode = ENABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
hadc.Init.DMAContinuousRequests = DISABLE;
hadc.Init.EOCSelection = EOC_SINGLE_CONV;
hadc.Init.Overrun = OVR_DATA_PRESERVED;
hadc.Init.LowPowerAutoWait = DISABLE;
hadc.Init.LowPowerFrequencyMode = ENABLE;
hadc.Init.LowPowerAutoPowerOff = DISABLE;
HAL_ADC_Init(&hadc);
/* USER CODE BEGIN 7 */
if (HAL_ADCEx_Calibration_Start(&hadc, ADC_SINGLE_ENDED) != HAL_OK)
{
Error_Handler();
}
/* USER CODE END 7 */
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_7;
sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
} 问题解决，谢谢
原因不使用volatile修饰
页:
[1]