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cppoisson · 2024-09-16

Hi everyone,I am using the ADC2 of the STM32G431KB to read a voltage value. I am actualy measuring 0.8V on the pin of the ADC with a multimeter, but while debuging, the conversion give me back 0.12V (~150 from the ADC, instead of ~1000). This is my c...

cppoisson · 2024-09-20

I created a new topic because I found new details on the problem that I don't undertstand. I didn't notify that if disabled the ContinuousConvMode I had the wright value on the ADC (900 on the ADC equal to 790mV), but the value is not updated. When I...

cppoisson · 2024-09-20

I am trying to measure a voltage on the ADC2 of the STM32G431KB from the opamp in following mode through the DMA (this is the config : PA7 -> VOPAMP2 + -> ADC2 channel VOPAMP2 -> DMA2 Chanel 2). My main problem is that the ADC is not giving back the...

cppoisson · 2024-09-19

Yes it is but I am debuging the adc value before this function is called. I just put it to give the context avec the struct analog_input.unmap[2] wich is linked to analog_input.voltage.

cppoisson · 2024-09-19

This configuration is already given in the first regular chanel of the ADC 2. Best regards.

cppoisson · 2024-09-19

Yes there it is :void MX_OPAMP2_Init(void) { /* USER CODE BEGIN OPAMP2_Init 0 */ /* USER CODE END OPAMP2_Init 0 */ /* USER CODE BEGIN OPAMP2_Init 1 */ /* USER CODE END OPAMP2_Init 1 */ hopamp2.Instance = OPAMP2; hopamp2.Init.PowerMode...

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STM32G431KB ADC Wrong value

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ADC wrong value in continuous conversion mode

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