STM8S完成正弦波逆变器DIY

看论坛上有人用EG8010和TDS2285做逆变器，小弟现在再调试一款STM8S003的小板，感觉资源也够，只要有PWM和ADC应该就差不多，试着想自己编一个程序试试

该程序主要完成STM TIM1的1,2通道互补输出，20K的载波，50hz的基波

#include "IOSTM8S103K3.h"
#include "math.h"
#include 
unsigned char pwm_duty[100];

#define LED PC_ODR_ODR4

#define IN PD_IDR_IDR3

unsigned char t,v;

unsigned char a,i,j,count;

unsigned long k,sum,l;

void math(void)
{  
   unsigned char i;
   for(i=0; i<100; i++)
    {
    //if(j<= 50) pwm_duty[i]=(unsigned char)(0+(float)254*sin(2*3.1415926*(float)i*0.2/(float)20));
    //if(j> 50) pwm_duty[i]=(unsigned char)(254-(float)254*sin(2*3.1415926*(float)i*0.2/(float)20));
    pwm_duty[i]=(unsigned char)(127+(float)127*sin(2*3.1415926*(float)i*0.2/(float)20));
    } 
}

void delay_ms(unsigned int ms)
{
       unsigned char i;
       while(ms!=0)
       {
              for(i=0;i<250;i++)
              {}
              for(i=0;i<75;i++)
              {}
              ms--;
       }
}

void delay_us(unsigned int us)
{
       unsigned char j;
       while(us!=0)
       {
              for(j=0;j<250;j++)
              {}
              us--;
       }
} 

void Init_Timer4(void)
{  
    asm("sim"); 
    TIM4_CR1=0x01;//使能计数器
    TIM4_IER=0x01;//更新中断使能
    TIM4_EGR=0x01;
    TIM4_CNTR=199;//计数器值
    TIM4_ARR=199;//自动重装的值
    TIM4_PSCR=0x04;//分频值128
    asm("rim");//开全局中断，延时16.32ms
}
#pragma vector=TIM4_OVR_UIF_vector//0x19
__interrupt void TIM4_OVR_UIF_IRQHandler(void)//对应IAP的中断地址：0x8060
{
  //asm("JP 0x9060\n");
     
    TIM4_SR=0x00;
    
     if(k>= 100) k=0;
     TIM1_CCR1L = pwm_duty[k];   
    TIM1_CCR2L = pwm_duty[k]; 

   k++;

      //return;
}


void TIM1_CH1_PWM_INIT(void)
 {
  CLK_PCKENR1|=0x80;//开启定时器1外设时钟 
  TIM1_EGR=0x01;//重新初始化TIM1
  TIM1_EGR|=0x20;//重新初始化TIM1
  TIM1_ARRH=0x00;//设定重装载值
  TIM1_ARRL=255;
  
  TIM1_PSCRH=0;//预分频
  TIM1_PSCRL=0x04;
  TIM1_CR1=0;//边沿对齐,向上计数
  
  TIM1_CCER1=0x55;//高电平有效
  TIM1_CCMR1=0x60;//PWM模式1
  TIM1_CCMR2=0x60;//PWM模式1
    
  TIM1_DTR=0x04;
  TIM1_CCR1H=0;//占空比
  TIM1_CCR1L=254;
  TIM1_CCR2H=0;//占空比
  TIM1_CCR2L=254;
  TIM1_CR1|=0x01;//向上计数，无缓存，使能
  TIM1_BKR=0x80;//开启刹车
 }

void TIM2_CH1_PWM_INIT(void)
 {
TIM2_CCMR1 = TIM2_CCMR1 | 0x70;// Output mode PWM2.
TIM2_CCMR3 = TIM2_CCMR3 | 0x70;// Output mode PWM2. 
// 通道2 被设置成比较输出方式
// OC2M = 111,为PWM 模式2，
// 向上计数时，若计数器小于比较值，为无效电平
// 即当计数器在0 到比较值时，输出为1，否则为0
TIM2_CCER1 = TIM2_CCER1 | 0x03;// CC polarity low,enable PWM output */
TIM2_CCER2 = TIM2_CCER2 | 0x03;
// CC2P = 1，低电平为有效电平
// CC2E = 1，开启输出引脚
//初始化自动装载寄存器，决定PWM 方波的频率，Fpwm=4000000/256=15625HZ
TIM2_ARRH = 0;
TIM2_ARRL = 0xFF;
//初始化比较寄存器，决定PWM 方波的占空比
TIM2_CCR1H = 0;
TIM2_CCR1L = 0;
TIM2_CCR3H = 0;
TIM2_CCR3L = 0;
// 初始化时钟分频器为2，即计数器的时钟频率为Fmaster=8MHZ
TIM2_PSCR = 1;
// 启动计数
TIM2_CR1 = TIM2_CR1 | 0x01;
 }



void main( void )
{



          CLK_CKDIVR=0x00;
          math();   
          PA_DDR|=0x08;
	  PA_CR1|=0x08;
	  PA_CR2|=0x00;
          
          PA_ODR|=0x08;
          
          PC_DDR|=0x58;
	  PC_CR1|=0x58;
	  PC_CR2|=0x00;
          
       //   PC_ODR|=0x58;
          
          PD_DDR|=0x10;
	  PD_CR1|=0x10;
	  PD_CR2|=0x00;
          

        
        Init_Timer4();
        
        TIM1_CH1_PWM_INIT();
        
   //     TIM2_CH1_PWM_INIT();
        
        TIM2_CCR1L = 128;
        TIM2_CCR3L = 0;
        TIM1_CCR1L=128;
        TIM1_CCR2L=128;
             while(1)			
	{

 
 
}

}