Multiple ADC Channels (using registers)

[caden013]

Hello all, I am currently working on a project in which I need to sample 5 ADC channels every 50 ms. As of now, I am trying to use TIM2's TRGO (interrupt triggered every 50 ms) to trigger the conversion of a regular sequence of 5 ADC channels (PA0 - PA4) and save these values by reading the ADC's data register in the ADC IRQ (triggered by the EOC interrupt flag). For some reason, I cannot figure out why the EOC interrupt is only triggered once, at the beginning of the program. If anyone could help, I would greatly appreciate it. 

 

I will post my code if needed (I am using the Keil uVision 5 IDE). Thanks in advance.

[Stassen.C]

Hello Caden013, 

Could you please show us your code so that we can look at it?

Regards,
Stassen

[caden013]

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@Stassen.C wrote:

Hello Caden013, 

Could you please show us your code so that we can look at it?

Regards,
Stassen

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Yes, I will attach the ADC and Timer c files where I set their settings.

 

Here is where I setup their corresponding clocks (in a different file):

 

/*
FUNCTION: clockSetup
INPUTS: none
OUTPUTS: none
PURPOSE: To initialize the clocks for the peripherals
*/
void clockSetup(void)
{
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN; // enable GPIOA clock
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOBEN; // enable GPIOB clock
RCC->AHB2ENR |= RCC_AHB2ENR_ADCEN; // enable ADC clock
RCC->APB1ENR1 |= RCC_APB1ENR1_TIM2EN; // enable clock for TIM2
}

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