Question
LL_ADC_GetChannelSamplingTime returns incorrect value
Hi,
I am using LL_ADC_GetChannelSamplingTime() to obtain the sampling time of a specific channel but in some cases the return value seems to be incorrect. In my specific case the SMPR register has the value 0x00008046 and I call the function with channel = LL_ADC_CHANNEL_6. The function then returns 0xFFFFFE08 but I expect 0x00 (ADC_SAMPLINGTIME_COMMON_1) .
After having a deeper look, it seems that smp_channel_posbit0 is not calculated correctly in this case. Can you confirm this?
I am using STM32CubeMX 6.13.0 + STM32CubeU0 Firmware Package V1.2.0 and the ADC configuration is as follows:
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV1;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.LowPowerAutoPowerOff = DISABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_79CYCLES_5;
hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_19CYCLES_5;
hadc1.Init.OversamplingMode = DISABLE;
hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
