Generating a signal triangulair Using DAC

/** SABRI OUESALTI**/


program :

#include <stm32f4xx_gpio.h>
#include <stm32f4xx_rcc.h>
#include "stm32f4xx_dac.h"

void DACconfig( )
{
GPIO_InitTypeDef GPIO_InitStructure;
  DAC_InitTypeDef DAC_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

  /* Enable DAC and GPIOC clock */
    
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC | RCC_APB1Periph_TIM2, ENABLE);

  /* Configure PA.04 (DAC) as output -------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);


  /* TIM2 Configuration */
  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Period = 0xF;
  TIM_TimeBaseStructure.TIM_Prescaler = 0xF;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  /* TIM2 TRGO selection */
  TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update);

  /* DAC channel1 Configuration */
  DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;
  DAC_InitStructure.DAC_WaveGeneration =  DAC_WaveGeneration_Triangle;
  DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_TriangleAmplitude_4095;
  DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
  DAC_Init(DAC_Channel_1, &DAC_InitStructure);


  DAC_Cmd(DAC_Channel_1, ENABLE);

  /* TIM2 enable counter */
  TIM_Cmd(TIM2, ENABLE);

}


int main()
{
 DACconfig();

while(1){

}
}