#include "stm32f4xx.h"
#include "LCD2x16.c"

int main ()  {
unsigned int j;

/*
  ADCx->SR       = ; // Status Register 
  ADCx->CR1      = ; // Control Register 1
  ADCx->CR2      = ; // Control Register 2
  ADCx->SMPR1    = ; // SaMPle time Register 1
  ADCx->SMPR2    = ; // SaMPle time Register 2
  ADCx->JOFR1    = ; // inJecter channel data OFset Register 1
  ADCx->JOFR2    = ; // inJecter channel data OFset Register 2
  ADCx->JOFR3    = ; // inJecter channel data OFset Register 3
  ADCx->JOFR4    = ; // inJecter channel data OFset Register 4
  ADCx->HTR      = ; // watchdog Higher Threshold Register
  ADCx->LTR      = ; // watchdog Lower Threshold Register
  ADCx->SQR1     = ; // regular SeQuence Register 1
  ADCx->SQR2     = ; // regular SeQuence Register 2
  ADCx->SQR3     = ; // regular SeQuence Register 3
  ADCx->JSQR     = ; // inJected SeQuence Register 
  ADCx->JDR1     = ; // inJected Data Register 1
  ADCx->JDR2     = ; // inJected Data Register 2
  ADCx->JDR3     = ; // inJected Data Register 3
  ADCx->JDR4     = ; // inJected Data Register 4
  ADCx->DR       = ; // Data Register
  ADC->CSR       = ; // Common Status Register
  ADC->CCR       = ; // Common Control Register
  ADC->CDR       = ; // Common regular Data Register for dual and triple mode
  
  inputs are PA2 & PA3 -> these pins must be enabled for analog, PA must have clock!
*/

/*----------------------------------------------------------------------------------------*/
/*  Software triggered, dual, simultaneous sampling                                       */
/*----------------------------------------------------------------------------------------*/
  RCC->APB2ENR  |= 0x00000100 + 0x00000200;      // Enable clock for ADC1 & ADC2
  RCC->AHB1ENR  |= 0x00000001 + 0x00000002;      // Enable clock for GPIOA & GPIOB

  ADC->CCR       = 0x00000006;                   // No DMA, Regular simultaneous mode only
  
  ADC1->CR2      = 0x00000001;                   // Control Register 2: ADC1 ON
  ADC1->SQR3     = 0x00000002;                   // regular SeQuence Register 3

  ADC2->CR2      = 0x00000001;                   // Control Register 2: ADC2 ON
  ADC2->SQR3     = 0x00000003;                   // regular SeQuence Register 3

  GPIOA->MODER   |= 0x000000f0;  // MODE Register -> PA2, PA3 are analog inputs

  LCD_init();
  LCD_string("ADC1=", 0);
  LCD_string("ADC2=", 0x40);
    
  while (1) {
    ADC1->CR2 |= 0x40000000;            // simultaneous Start Conversion
    for (j = 0; j<100; j++){};          // wait for conversion to complete
    LCD_Int16((int)ADC1->DR, 0x06, 1);  // write result on LCD, 1st line
    LCD_Int16((int)ADC2->DR, 0x46, 1);  // write result on LCD, 2nd line
  };
  
}