main.c

07年电子设计大赛程序,开关电源设计,全部代码

//文 件 名：CPLD.H
//功    能：实现单片机与CPLD器件的数据传送
//作    者：吕定胜
//创建日期：2007-09-03
//修改日期：

//传送端口定义
#include <stc12c5410ad.h>
#include "lcd.h"
sbit pwmclk = P2^3;
sbit senddata = P2^2;
sbit pwmcs = P2^5;
sbit outcs = P2^6;
unsigned char flagpower;
int gpwm;

void delay_50us1(unsigned char i)
{
	unsigned char j;
	while(i--)
	for(j=0;j<146;j++);
}

//发送数据子程序
void send(int pwmdata)
{
	unsigned char i;
	pwmdata <<= 7;
	pwmcs = 0;
	for(i=0;i<9;i++)
	{
		
		pwmdata <<= 1;
		senddata = CY;
		pwmclk = 0;
		pwmclk = 1;
		pwmclk = 1;
		pwmclk = 0;
	}
	pwmcs = 0;
	pwmcs = 1;
}


void main()
{
	P1M0 = 0x0F;
	P1M1 = 0xF0;	//设置P1.0~3为高阻输入，作ADC输入用.P1.4~7为推挽式
	IPH = 0x01;
	IP  = 0x01;		//设置按键中断为最高级
	IT0 = 1;		//设置按键中断为下降沿有效
	EA  = 1;		//开总中断
	EX0 = 1;		//开键盘中断
	lcdinit();
	outcs = 1;
	gpwm = 255;
	send(gpwm);
	while(1){;}
	
}



void ex0_int(void) interrupt 0
{
	unsigned int i,j;
	wr_lcd(1,49);
	ADC_CONTR = 0xE0;			//选择ADC0通道
	do
	{
		ADC_CONTR |= 0x08;			//启动AD转换
		while(!(ADC_CONTR&0x10));	//AD转换尚未完成,继续等待
		ADC_CONTR = ADC_CONTR&0xE7;	//清ADC_FLAG,ADC_START,停止AD转换
		i = ADC_DATA;
		delay_50us1(1);

		ADC_CONTR |= 0x08;			//启动AD转换
		while(!(ADC_CONTR&0x10));	//AD转换尚未完成,继续等待
		ADC_CONTR = ADC_CONTR&0xE7;	//清ADC_FLAG,ADC_START,停止AD转换
		j = ADC_DATA;
	}while(j!=i);
		
	wr_lcd(1,50);

	j &= 0xFC;

	switch(j)
	{
		case 0xF0:	//"开关"
		wr_lcd(1,55);
		if(flagpower==1)
		{
			outcs = 1;
			gpwm = 511;
			flagpower = 0;
		}//关电源
		else 
		{
			
			gpwm = 255;
			send(gpwm);
			outcs = 0;
		   	flagpower = 1;
		}//开电源
		break;
		
		case 0xE4://向上
			gpwm -= 5;
			send(gpwm);
			break;
		
		case 0xD8://向下
			gpwm += 5;
			send(gpwm);
			break;

		case 0x3C:					//按下1
	 		gpwm = 5;
	   		send(gpwm);
			break;
		
		case 0x8C: 					//按下2
		gpwm = 505;
		send(gpwm);
		break;
	}
	display_coordinate(2,1);
	i = gpwm;
	wr_lcd(1,i/1000+48);
	i %= 1000;
	wr_lcd(1,i/100+48);
	i %= 100;
	wr_lcd(1,i/10+48);
	wr_lcd(1,i%10+48);
}