st-nucleo-l152re/DACTest/main.cpp

#include <cox.h>
 
Timer timerWave;
 
static void taskWave(void *) {
  static float in = 4.712;
  float out;
 
  in += 0.1;
  if (in > 10.995) {
    in = 4.712;
  }
  out = sin(in) * 2047.5 + 2047.5;
  printf("sin():%u\n", (uint16_t) out);
  analogWrite(PA4, out);
 
  out = cos(in) * 2047.5 + 2047.5;
  printf("cos():%u\n", (uint16_t) out);
  analogWrite(PA5, out); //It generates voltage value from 0 to 1.8V due to the user LED.
}
 
void setup(void) {
  Serial.begin(115200);
  printf("\n*** [ST Nucleo-L152RE] DAC Test ***\n");
 
  pinMode(PA4, OUTPUT);
  pinMode(PA5, OUTPUT);
 
  timerWave.onFired(taskWave, NULL);
  timerWave.startPeriodic(100);
}