76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
#include "dac_cfg.h"
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#include "gpio_cfg.h"
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#include "base/delay.h"
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/*
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@brief 默认初始化
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*/
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void DAC_Definit(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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DAC_InitTypeDef DAC_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
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GPIO_InitStructure.GPIO_Pin = C_H_DAC_Pin|C_M_DAC_Pin;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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DAC_DeInit();
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DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;
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DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
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DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
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DAC_Init(DAC_Channel_1, &DAC_InitStructure);
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DAC_Init(DAC_Channel_2, &DAC_InitStructure);
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DAC_Cmd(DAC_Channel_1, ENABLE);
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DAC_Cmd(DAC_Channel_2, ENABLE);
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C_H_DAC_Set(4000);
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/* configure the DAC1 */
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C_M_DAC_Set(4000);
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}
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/*
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@brief 设置高电平电压
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@param dac_val DAC0输出值 0-4096
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*/
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void C_H_DAC_Set(uint16_t dac_val)
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{
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uint16_t read=0;
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read=DAC_GetDataOutputValue(DAC_Channel_1);
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if(dac_val==read) return;
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DAC_SetChannel1Data(DAC_Align_12b_R, dac_val);
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do{
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DAC_SoftwareTriggerCmd(DAC_Channel_1,ENABLE);
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read=DAC_GetDataOutputValue(DAC_Channel_1);
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}while(read!=dac_val);
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}
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/*
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@brief 设置高电平电压
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@param dac_val DAC1输出值 0-4096
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*/
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void C_M_DAC_Set(uint16_t dac_val)
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{
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uint16_t read=0;
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read=DAC_GetDataOutputValue(DAC_Channel_2);
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if(dac_val==read) return;
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DAC_SetChannel2Data(DAC_Align_12b_R, dac_val);
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do{
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DAC_SoftwareTriggerCmd(DAC_Channel_2,ENABLE);
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delay_us(2);
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read=DAC_GetDataOutputValue(DAC_Channel_2);
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}while(read!=dac_val);
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}
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