About msche.1

msche.1 · 2022-02-28

First I declare the buffer length/* USER CODE BEGIN PD */ #define ADC_BUF_LEN 10000Then I declare the buffer/* USER CODE BEGIN PV */ GPIO_InitTypeDef gpio_init_structure; VIRT_UART_HandleTypeDef huart0; VIRT_UART_HandleTypeDef huart1; uint16_t a...

msche.1 · 2022-02-17

/* USER CODE BEGIN PD */ #define ADC_BUF_LEN 4096 /* USER CODE END PD */ ... /* USER CODE BEGIN PV */ uint16_t adc_buf[ADC_BUF_LEN]; ... /* USER CODE BEGIN 2 */ HAL_ADC_Start_DMA(&hadc2, (uint32_t*)adc_buf, ADC_BUF_LEN);I've got the above code ...

msche.1 · 2022-02-16

I'm building an elf file, SCPing it to the controller and using the fw_cortex_m4.sh to load it on the m4, but no matter what I set the APB2DIV scaler to the number of times per second TIM16 is called doesn't change. The only thing that does seem to ...

msche.1 · 2022-02-09

I've just watched a few tutorials on ADC, and I've enabled IN1 on ADC1 which seems to map to the connector labeled A3 as per this doc.I then added the following to my main.c within the CM4 project.uint32_t raw = 0; char msg[100]; HAL_ADC_Start(&hadc1...

msche.1 · 2022-02-03

I've been trying for hours to read an analog value from a pin and write it over UART with no success on my STM32MP1. I've assigned PF14 to ADC2_INN2 and set IN2 to "IN2 Differential", then I generate the code and when I try to build I get a bunch of ...

msche.1 · 2022-03-02

@Kevin HUBER thanks for the clarification. I've started using Engineering mode and some of the code provided earlier to read analog values with DMA, but I'm not getting accurate values after forwarding an elf file from M7 to M4. When I debug in, I...

msche.1 · 2022-02-22

Ok, I guess 2.5 is a max, not a min. I was not getting useable results b/c I was using ANA1 and as per the docs that should be A3, but it is actually A2.

msche.1 · 2022-02-22

@Kevin HUBER wouldn't I want to set the voltage reference to 0v?How do I calculate the max value? If I set to 2.5 ref, I have tested that ~3.8v returns 4096, but if I go down to 2.5v, I see a value of about 120. Even stranger as I increase voltage...

msche.1 · 2022-02-17

Well I finally found settings and code that worked. Not really sure what I did, but these are my configs for anyone else who's looking to do this.

msche.1 · 2022-02-17

Thanks for your answer, the problem turned out to be that I was counting the amount of times the ADC callback was hit not the timer counting.

User statistics

User Activity

Why does STM32MP1 DMA ADC work in Engineering mode, but not in when I compile it and use `fw_cortex_m4.sh`?

STM32MP1 DMA buffer not populating with ADC values.

Why is my STM32 TIM16 interrupt speed not changing when I change the APB2DIV?

Why do I get inaccurate values on my analog to digital converter on my STM32MP1?

undefined reference to `HAL_ADC_Init'

Re: Why do I get inaccurate values on my analog to digital converter on my STM32MP1?

Re: Why do I get inaccurate values on my analog to digital converter on my STM32MP1?

Re: Why do I get inaccurate values on my analog to digital converter on my STM32MP1?

Re: STM32MP1 DMA buffer not populating with ADC values.

Re: Why is my STM32 TIM16 interrupt speed not changing when I change the APB2DIV?