main.c

学习usp3254中程序下载中程序切换工能力,实现在了两个程序空间互转功能

//文件名 main.c
//UPS切换装置

//周登勇

#include "main.h"

void main()
{
	Init();
	for(;;)
	{//计算恢复切换和主从切换

		if( bAC1Low && !bAC2Low)
		{//AC1欠压
			if( !bLocat )
			{//AC2不欠压,切换到AC2
				ACChange( 1 );
			}
		}
		else if( bAC2Low && !bAC1Low )
		{//AC2欠压
			if( bLocat )
			{//AC1不欠压切换到AC1
				ACChange( 0 );
			}
		}
		else if( !bAC1Low && !bAC2Low )
		{//系统正常
			if( bMainSub )
			{
				if( bLocat )
				{//切换到AC1
					if( bAC2 )
					{//过零切换
						ACChange( 0 );
					}
				}
				else
				{
					bAC1 = FALSE;
				}
			}
			else
			{
				if( !bLocat )
				{//过零到AC2
					if( bAC1 )
					{//同步切换
						ACChange( 1 );
					}
				}
				else
				{
					bAC2 = FALSE;
				}
			}
		}
		WatchDog();
		ReadMainSub();
	}
}

void Init()
{

	IT0 = TRUE;
	IT1 = TRUE;
	EX0 = TRUE;
	EX1 = TRUE;
	ET0 = TRUE;
	ET1	= TRUE;
	TMOD = 0X99;

	EA = 1;
}


void Ac1SyncInt() interrupt 0
{
	TR0 = FALSE;
	TH0 = 0XFD;
	if( bAC1Low )
	{
		TL0 = 0XF8;
	}
	else
	{
		TL0 = 0XC0;
	}
	TR0 = TRUE;
	//计算切换
	if( AC1Count<500 )
	{
		AC1Count++;
	}
	else
	{
		bAC1Low = FALSE;
	}
	bAC1 = TRUE;
}

void Ac2SyncInt() interrupt 2
{
	TR1 = FALSE;
	TH1 = 0XFD;
	if( bAC2Low )
	{
		TL1 = 0XF8;
	}
	else
	{
		TL1 = 0XC0;
	}
	TR1 = TRUE;
	//计算切换
	if( AC2Count<500 )
	{
		AC2Count++;
	}
	else
	{
		bAC2Low = FALSE;
	}
	bAC2 = TRUE;
}

//AC1欠压切换
void Ac1LowInt() interrupt 1
{
	AC1Count = 0;
	bAC1Low = TRUE;
}
//AC2欠压切换
void Ac2LowInt() interrupt 3
{
	AC2Count = 0;
	bAC2Low = TRUE;
}
//AC切换
//numb=0换向AC2 else 切向AC1
void ACChange( BOOL numb )
{
	if( !numb )
	{
		P1 = 0XEB;
	}
	else
	{
		P1 = 0XE7;
	}
	Delay( 5 );
	P1 = 0XFF;
}
//延时
void Delay( U16 count )
{
	U16 i;
	for( i=0; i<count; i++ )
	{
		WatchDog();
	}
}
//喂狗
void WatchDog()
{
	P1 = 0X5F;
	P1 = 0XFF;
}
//读取运行模式
void ReadMainSub()
{
	if( bMode != bMainSub )
	{
		if( cModeCount < 5000 )
		{
			cModeCount++;
		}
		else
		{
			bMainSub = bMode;
			cModeCount = 0;
		}
	}
	else
	{
		cModeCount = 0;
	}
}