基于STM32F407，输出双路互补的SPWM波，AD采集用DMA DAC的方式，具有PID调节 -

#include "stm32f4xx.h"
#include "string.h"
#include "usart.h"
#include "delay.h"
#include "bsp_advance_tim.h"
#include "bsp_spwm.h"
#include "ShuangLu.h"
#include "PID.h"
#include "bsp_adc.h"
#include "SD_io.h"
#include "oled.h"
#include "filter.h"
#include "bsp_spwm.h"
#include "led.h"
#define current_threshold 3 //阈值电流为3A
u8 DispADBuff[2][30]; //用于存放字符
extern u16 ADC_ConvertedValue[NOFCHANEL];//DAC_DMA传值处
extern PID pid_voltage; //存放电压PID的参数
extern float ADC_Final_DisplayValue[NOFCHANEL]; //用于存放最终显示值
extern u16 ADC_filter_Value[NOFCHANEL]; //用于存放滤波后值
extern u8 AD_Flag;
u32 Display_flag=0;//是否显示，PID是否更新
int main(void)
{
delay_init(168);
//ShuangLu_Init();
ADC_X_Init();
TIMx_Configuration();
LED_Init(); //初始化LED端口
OLED_Init();
PID_init(1,1,0,0.5);
OLED_ShowNum(0,0,22,3,16);
OLED_Display_On();
TIM3_Int_Init(3360-1,0);
while(1)
{
if(Display_flag%1000==0)
{
AD_Flag=AD_voltage; ADC_filter_Value[0]=middleValueFilter();
AD_Flag=AD_current; ADC_filter_Value[1]=middleValueFilter();
ADC_Final_DisplayValue[0] =(float) ADC_filter_Value[0]/4096*3.3*6+0.2; //电压检测
ADC_Final_DisplayValue[1] =(float) ADC_filter_Value[1]/4096*3300*1.448-18; //电流检测
//PID电压计算输出，设定值24V,输入电压检测值
PID_Calc(ADC_Final_DisplayValue[0],24,0.7,0.2); //24是设定值，0.7是上限.0.2是下限
}
if((Display_flag>10000)||(Display_flag==1))
{
sprintf(DispADBuff[0],"V=%.2fV\0",ADC_Final_DisplayValue[0]);//电压显示
sprintf(DispADBuff[1],"I1=%.3fA\0",ADC_Final_DisplayValue[1]);//电流显示
OLED_ShowString(0,0,DispADBuff[0]);
OLED_ShowString(0,2,DispADBuff[1]);
OLED_Display_Off();
Display_flag=2;
}
if(ADC_Final_DisplayValue[1]>current_threshold)
{
GPIO_SetBits(SD_io_PORT,SD_io_I1|SD_io_I2);
delay_ms(1000);delay_ms(1000);delay_ms(1000);delay_ms(1000);delay_ms(1000);delay_ms(1000);
pid_voltage.SEk=0;
GPIO_ResetBits(SD_io_PORT,SD_io_I1|SD_io_I2);
}
}
}

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