Having Issues with ADC configuration STM32L011K4T6
Hello,
I have tried for the last couple of days to get use 2 pots to change the frequency and duty cycle of a PWM signal using "Bare Metal" programming due to the flash limitation of the STM32L011K4T6 I rapidly ran out of space using HAL and was not able to make this fit. I am using the STM32 Nucleo-L011K4 Board
The Issue I am having is under HAL I got the STM32L011K4T6 to read from 1 Pot and output a variable frequency PWM signal or 2 Pots and no PWM Signal due to size limitations. So I switched to Bare Metal Programming and have had nothing but issues even though I set the registers the same and have followed multiple different guides online but every time I wait for the ADC_ISR_EOC flag to be set it gets set as soon as I trigger ADC_CR_ADCSTART but then disappears as soon as I get into the while variable so it forms an infinite loop.
at this point I do not know what I am doing wrong.
Any help would be greatly appreciated.
Code Below
uint32_t freq = 0;
float dc = 0;
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_ADC_Init();
MX_TIM2_Init();
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);
ADC1->CR |= ( ADC_CR_ADVREGEN );
HAL_ADCEx_Calibration_Start(&hadc,ADC_SINGLE_ENDED);
if (1)
{
ADC1->CR |= ( ADC_CR_ADCAL );
while ( ADC1->CR & ADC_CR_ADCAL ) {};
}
while (1)
{
ADC1->CHSELR = 0;
ADC1->CHSELR |= ADC_CHSELR_CHSEL3;
ADC1->CR |= ADC_CR_ADEN;
ADC1->CR |= ADC_CR_ADSTART;
while(!(ADC1->ISR & ADC_ISR_EOC)){}
freq = ADC1->DR;
ADC1->CR &= ADC_CR_ADSTART;
ADC1->CHSELR = 0;
ADC1->CHSELR |= ADC_CHSELR_CHSEL7;
ADC1->CR |= ADC_CR_ADEN;
ADC1->CR |= ADC_CR_ADSTART;
while(!(ADC1->ISR & ADC_ISR_EOC)){int a = a;}
dc = ADC1->DR;
ADC1->CR &= ADC_CR_ADEN;
ADC1->CR &= ADC_CR_ADSTART;
dc = (dc - 0.0) * (4095.0 - 0.0) / (4095.0 - 0.0) + 0.0;
freq = freq * 65535;
freq = freq / 4095;
if(dc <= freq)
{
TIM2->ARR = freq - 1;
TIM2->CCR1 = (freq / dc);
}
}
}
void MX_GPIO_Init(void)
{
GPIOA->MODER |= (3 << (3*2));
GPIOA->MODER |= (3 << (7*2));
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC->CR = 0x3000305;
RCC->AHBENR = 0x100;
RCC->APB2ENR = 0x400201;
RCC->APB1ENR = 0x10000001;
RCC->IOPENR = 0x5;
}
static void MX_ADC_Init(void)
{
RCC->APB2ENR |= (RCC_APB2ENR_ADCEN);
/*
ADC1->CR &= ~ADC_CR_ADVREGEN;
for(int i =0;i<10*48/4;i++){i=i;}
ADC1->CR |= ADC_CR_ADVREGEN;
ADC1->CR |= ADC_CR_ADCAL;
while((ADC1->CR & ADC_CR_ADCAL) != 0){int a = a;}
ADC1->CFGR2 &= ~ADC_CFGR2_CKMODE;
ADC->CCR |= ADC_CCR_TSEN;
ADC1->CHSELR |= (1 << 3);
ADC1->CHSELR |= (1 << 7);
// ADC1->CR = 0x10000000;
// ADC1->CFGR1 = 0;
// ADC1->CFGR2 = 0x40000000;
ADC1->SMPR = 0x2;*/
}
static void MX_TIM2_Init(void)
{
TIM2->CR1 = 0x281;
TIM2->SR = 0x1f;
TIM2->CCMR1 = 0x68;
TIM2->CCER = 0x1;
TIM2->PSC = 0x14;
TIM2->DMAR = 0x281;
}