#include "basic.h"


/**
  * @brief  使能DAC的时钟，初始化GPIO
  * @param  无
  * @retval 无
  */
void DAC_Config(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	DAC_InitTypeDef  DAC_InitStructure;

	/* 使能GPIOA时钟 */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);	
	
	/* 使能DAC时钟 */	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
  
	/* DAC的GPIO配置，模拟输入 */
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_4 | GPIO_Pin_5;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;  
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	
	/* 配置DAC 通道1 */
	DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;			//使用软件触发
	DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;	//不使用波形发生器
	DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;	//使用DAC输出缓冲
	DAC_Init(DAC_Channel_1, &DAC_InitStructure);

	/* 配置DAC 通道2 */
	DAC_Init(DAC_Channel_2, &DAC_InitStructure);
  
	/* 配置DAC 通道1、2 */
	DAC_Cmd(DAC_Channel_1, ENABLE);
	DAC_Cmd(DAC_Channel_2, ENABLE);
	
	//初始值
	DAC_SetChannel1Data(DAC_Align_12b_R,0x0000);
	DAC_SetChannel2Data(DAC_Align_12b_R,0x0000);
	
	//软件触发
	DAC_SoftwareTriggerCmd(DAC_Channel_1,ENABLE);
	DAC_SoftwareTriggerCmd(DAC_Channel_2,ENABLE);


}

void DAC1_SetVol(float voltage)
{
	uint16_t data;
	data = (uint16_t)((voltage / 3.0f) * 4095);
	
	DAC_SetChannel1Data(DAC_Align_12b_R,data);
	DAC_SoftwareTriggerCmd(DAC_Channel_1,ENABLE);
}

void DAC2_SetVol(float voltage)
{
	uint16_t data;
	data = (uint16_t)((voltage / 3.0f) * 4095);
	
	DAC_SetChannel2Data(DAC_Align_12b_R,data);
	DAC_SoftwareTriggerCmd(DAC_Channel_2,ENABLE);
}