stm32g070不管怎么配置，adc的采样时间固定

熊大

stm32g070不管怎么配置，14个通道的采样时间居然固定的？


    hadc1.Instance = ADC1;
    hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV64;
    hadc1.Init.Resolution = ADC_RESOLUTION_12B;
    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc1.Init.ScanConvMode = ADC_SCAN_SEQ_FIXED;
    hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
    hadc1.Init.LowPowerAutoWait = DISABLE;
    hadc1.Init.LowPowerAutoPowerOff = DISABLE;
    hadc1.Init.ContinuousConvMode = DISABLE;
    hadc1.Init.NbrOfConversion = 1;
    hadc1.Init.DiscontinuousConvMode = DISABLE;
    hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
    hadc1.Init.DMAContinuousRequests = ENABLE;
    hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
    hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_160CYCLES_5;
    hadc1.Init.OversamplingMode = DISABLE;
    hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;


调整ClockPrescaler 和SamplingTimeCommon1 ，观察示波器GPIO的时间居然都是一样的。

    HAL_ADC_Start_DMA(&hadc1, g_func_adc.adc_dma, COUNTOF(g_func_adc.adc_dma));


while(1)
{

        HAL_GPIO_WritePin(LED_RUN_GPIO_Port, LED_RUN_Pin, GPIO_PIN_RESET);
        HAL_ADC_Start(&hadc1);
        HAL_ADC_PollForConversion(&hadc1, 50);
        HAL_GPIO_WritePin(LED_RUN_GPIO_Port, LED_RUN_Pin, GPIO_PIN_SET);

}

水晶之泪0517

ADC的多个通道的采样时间最多分成两组，每一组的采样时间配置相同

水晶之泪0517