My ADC1_Data Register is null. I can't understand why it is. Can u help me?
#include "main.h"
#include "SysClockConf.h"
uint16_t values[256];
// MY CLOCK IS 170 MHz."
// STM32G431
// READ_BIT() Fonksiyonu
void GPIO_Config(){
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN; // Initialize the clock for GPIOA. -->
RCC->AHB2ENR |= RCC_AHB2ENR_ADC12EN; // ADC12 clock is enabled.
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOBEN; // FOR LED
RCC->APB2ENR |= RCC_APB2ENR_TIM8EN; // TIM8 clock is enabled.
GPIOA->MODER |= (0b11<<GPIO_MODER_MODE0_Pos); // GPIOA0 is adjusted as analog, default state
GPIOB->MODER &= ~(0b1<<(GPIO_MODER_MODE8_Pos+1)); // LED as output.
}
void delay(){
static uint16_t t=10000;
while(t--);
}
void ADC_Config(){
ADC1->CR &= ~(ADC_CR_ADSTART) ; // ADSTART is set to 0, to configure, default.
ADC1->CR &= ~(1<<ADC_CR_DEEPPWD_Pos); // not in deep power down.
ADC1->CR |= ADC_CR_ADVREGEN; //
delay();
//ADC1->CFGR &= ~(ADC_CFGR_CONT);// Single conversion mode
ADC1->CFGR |= ADC_CFGR_DISCEN; // Discontinous mode is enabled.
ADC1->SQR1 &= ~(1<<ADC_SQR1_L_Pos); // one channel
ADC1->SQR1 |= (1<<ADC_SQR1_SQ1_Pos); // 1st conversion in regular sequence (DATASHEETDAN BAK) !!! IN1 olarak geçiyor PA0 olmasına rağmen.
ADC1->DIFSEL &= ~(ADC_DIFSEL_DIFSEL_0); //
//ADC1->CFGR &= ~(0b11<<ADC_CFGR_RES_Pos); // 12 bit resolution, default
ADC1->CFGR |= (0b01<<ADC_CFGR_EXTEN_Pos); // Rising Edge Triggered.
//ADC1->CFGR |= ADC_CFGR_EXTSEL_2 | ADC_CFGR_EXTSEL_1 | ADC_CFGR_EXTSEL_0; // External event TIM8 TRGO [00111]
ADC1->CFGR |= ADC_CFGR_EXTSEL_3; // TIM8 TRGO2 [010000];
ADC1->CR |= ADC_CR_ADEN; // ADC ON
ADC1->SMPR1 |= (0b111<<ADC_SMPR1_SMP1_Pos); // Default 2.5 ADC_CLK
while(!(ADC1->ISR & ADC_ISR_ADRDY)); // Till ADC ready
ADC1->CR &= ~(1<<ADC_CR_ADCALDIF_Pos); // Calibration single ended
ADC1->CR |= ADC_CR_ADCAL; // Calibration starts - single channel
while(!(ADC1->CR & ADC_CR_ADCAL)); // Till the calibration is done
ADC1->ISR |= (ADC_ISR_ADRDY); // Clear ready flag
}
void TIM8_Config(){ // Up counter and edge aligned mode
TIM8->PSC = 1000-1;
TIM8->ARR = 17000-1;
TIM8->DIER |= TIM_DIER_UIE; // UPDATE INTERRUPT ENABLED
TIM8->CR2 = (0010<<TIM_CR2_MMS_Pos); // Update event mode
}
void TIM8_UP_IRQHandler(void){
TIM8->SR &= ~(TIM_SR_UIF);
static uint8_t m = 0;
values[m++] = ADC1->DR;
ADC1->ISR &= ~(ADC_ISR_EOC);
while(!(ADC1->ISR & ADC_ISR_EOC)); // END OF CONVERSION FLAGI KALKMIYOR.
GPIOB->ODR ^= (1<<GPIO_ODR_OD8_Pos);
}
int main(void)
{
HAL_Init();
SystemClock_Config();
GPIO_Config();
TIM8_Config();
ADC_Config();
ADC1->CR |= ADC_CR_ADSTART;
NVIC_EnableIRQ(TIM8_UP_IRQn);
NVIC_SetPriority(TIM8_UP_IRQn,1);
TIM8->CR1 |= (1<<TIM_CR1_CEN_Pos);
while (1){
GPIOB->ODR |= 0;
}
}
// PSC--> 5000 ARR 17000 for her saniyede TIM8_UP_URQHandler fonksiyonuna giriyor.
