checker_slave/source/elec_det/hardware/dac_cfg.c

#include "dac_cfg.h"
#include "gpio_cfg.h"
#include "base/delay.h"
/*
@brief 默认初始化
*/
void DAC_Definit(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	DAC_InitTypeDef  DAC_InitStructure;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
	
	GPIO_InitStructure.GPIO_Pin =  C_H_DAC_Pin|C_M_DAC_Pin;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	

	DAC_DeInit();
	DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;
  DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
  DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
	
	
  DAC_Init(DAC_Channel_1, &DAC_InitStructure);
	
	
	DAC_Init(DAC_Channel_2, &DAC_InitStructure);
	
	DAC_Cmd(DAC_Channel_1, ENABLE);
	
	DAC_Cmd(DAC_Channel_2, ENABLE);
	

	
	C_H_DAC_Set(4000);
	/* configure the DAC1 */
	C_M_DAC_Set(4000);
}
/*
@brief 设置高电平电压
@param dac_val DAC0输出值 0-4096
*/
void C_H_DAC_Set(uint16_t dac_val)
{
  uint16_t read=0;
  read=DAC_GetDataOutputValue(DAC_Channel_1);
  if(dac_val==read) return;
	DAC_SetChannel1Data(DAC_Align_12b_R, dac_val);
  
  do{
    DAC_SoftwareTriggerCmd(DAC_Channel_1,ENABLE);
    read=DAC_GetDataOutputValue(DAC_Channel_1);
  }while(read!=dac_val);
  
}
/*
@brief 设置高电平电压
@param dac_val DAC1输出值 0-4096
*/
void C_M_DAC_Set(uint16_t dac_val)
{
  uint16_t read=0;
  read=DAC_GetDataOutputValue(DAC_Channel_2);
  if(dac_val==read) return;
	DAC_SetChannel2Data(DAC_Align_12b_R, dac_val);
  do{
    DAC_SoftwareTriggerCmd(DAC_Channel_2,ENABLE);
    delay_us(2);
    read=DAC_GetDataOutputValue(DAC_Channel_2);
  }while(read!=dac_val);
}