leddriver.c

通过AD5258和单片机控制的LED驱动程序

/*----------------------------------------------------------------------------------------------------------------------------------------
 说明：本程序主要完成ColorSort的一个LED light的控制。
 -----------------------------------------------------------------------------------------------------------------------------------------*/
#include "LedDriver.h"
#include "Ad5258.h"


//Entry----------------------------------------------------
void main(void)
{
	uchar index = 0;
	//close all interrupt
	EA  = 0;
	EX1 = 0;
	EX0 = 0;
	TMOD = 0x01;	//timer0, mod = 1 
	//init
	InitParams(); 
	//configure AD5258		
	for(index = 0; index < ADDR_NUM; index ++)
	{
		RdDataFromEEprom(index);		
	} 	
	//Timer0 	
	InitTimer0();	//Initial clock0
	//Init uart	
	InitUart();		//
	EnableDog();
	
	/*---------------------------------------------------------*/
	ET0 = 1;	   	//Timer0 enable		
	EA  = 1;       	//All Int enable
	//loop for ever------------------------------------
	while (1)	//主循环
	{
		 KickDog();
		 //adjust
		 TEST_TP0 = 1;		 	
		 if(light_flag_up == 2) 
		 {
		 	EA = 0;	
			light_flag_up = 0;	 			 				
			ConfigAd5258(uaddr_index, I2C_val[uaddr_index]);
			WrData2EEprom(uaddr_index);
			EA = 1;
		 }
		TEST_TP0 = 0;
		if(light_flag_down == 2) 
		 {
		 	EA = 0;	
			light_flag_down = 0;	 			 				
			ConfigAd5258(uaddr_index, I2C_val[uaddr_index]); 
			WrData2EEprom(uaddr_index);
			EA = 1;
		 }
		if(bSendBack == 1)
		{
			EA = 0;
			bSendBack = 0;			
		 	SendByteUart(uart_val);
			EA = 1;
		}
	}
}

//初始化系统参数
void InitParams(void)
{ 	
	//max3221
	MAX3221_EN = 1;
 	MAX3221_FORCE_ON  = 1;
 	MAX3221_FORCE_OFF = 0;	
	//configure
	for(uaddr_index = 0; uaddr_index < ADDR_NUM; uaddr_index ++)
	   I2C_val[uaddr_index] = 160; 	
	//Light
	light_flag_up   = 0;
	light_flag_down = 0;
	//Test
	time_count = 0;
	time_flag  = 1;	
	uart_val   = 0;
	//connect
	led_flag  = 0;
	led_count = 0;
	CONNECT_LED = 0;
}

//Timer0-----------------------------------------------------
//Timer0 中断
void Timer0ISR(void) interrupt 1
{
	//disable interrupt
	EA = 0;	  
	//light key up
	/*----------------------------------------------------------------------------------*/
	if(LIGHT_UP == 0)
	{
		if(light_flag_up == 0)
			light_flag_up  = 1;
	}				
	else
	{
		if(light_flag_up == 1)
		{
			//get address
			/*----------------------------------------------------------------------------------*/
			uaddr_index = JUMP0;
			if(JUMP1 == 1) uaddr_index += 2;
			if(I2C_val[uaddr_index] < MAX_STEP_NUM)
				I2C_val[uaddr_index] = I2C_val[uaddr_index] + 1;			
			light_flag_up  = 2;
			//uart_val = I2C_val[uaddr_index];			
			//bSendBack = 1;
		}
	}		
	//light key down
	if(LIGHT_DOWN == 0)
	{
		if(light_flag_down == 0)
			light_flag_down  = 1;
	}
	else 
	{
		if(light_flag_down == 1)
		{
			//get address
			/*----------------------------------------------------------------------------------*/
			uaddr_index = JUMP0;
			if(JUMP1 == 1) uaddr_index += 2;
			if(I2C_val[uaddr_index] > 0)
				I2C_val[uaddr_index] = I2C_val[uaddr_index] - 1; 			
			light_flag_down  = 2; 
			//uart_val = I2C_val[uaddr_index];			
			//bSendBack = 1;
		}
	}
	/*-------------------------------------------------------------------------------------*/ 
	if(time_flag == 1)	
	{
	 	time_count ++;
		if(time_count == 20)
		{
		    time_flag = 0;
			MAX3221_EN = 0;
			MAX3221_FORCE_ON  = 1;
	 		MAX3221_FORCE_OFF = 1; 
		}
	}
	//light led
	if(led_flag == 1)
	{
		led_count ++;
		if(led_count == 1)
			CONNECT_LED = 1;
		else if(led_count == 5)
		{
			CONNECT_LED = 0;
			led_flag = 0;
		}	
	} 
	//enable interrupt 
	/*--------------------------------------------------------------------------------------*/
	InitTimer0(); 
	EA = 1;
}

/*-----------------------------------------------------------------------------------------*/
//初始化Timer0
void InitTimer0(void)
{
	TR0 = 0;
	TH0 = 0x3C;		// 50ms
	TL0 = 0xAF;
	TR0 = 1;
}

/*-----------------------------------------------------------------------------------------*/
//串口中断
void UartISR(void) interrupt 4
{
	if(_testbit_(RI))
	{
		uart_val = SBUF;
		if(uart_val < ADDR_NUM)	//instruct
		{
			uaddr_index = uart_val;
		}
		else  //data
		{
			if(I2C_val[uaddr_index] > uart_val)
				light_flag_down = 2;
			else
				light_flag_up = 2;
			I2C_val[uaddr_index] = uart_val;
			bSendBack = 1;
			led_count = 0;
			led_flag  = 1;
		}				
	}
}

/*uart----------------------------------------------------------------------------------------*/
//初始化串口
void InitUart(void)
{	 	
	SCON  = 0x50;       //SCON: serail mode 1, 8-bit UART, enable recv 
    TMOD |= 0x20;       //TMOD: timer 1, mode 2, 8-bit reload 
    PCON |= 0x80;       //SMOD=1; 
    TH1   = 0xFD;       //Baud:19.2k  fosc=11.0592MHz 
    IE   |= 0x90;       //Enable Serial Interrupt 
    TR1   = 1;          //timer 1 run 	
}

/*--------------------------------------------------------------------------------------------*/
//串口发送数据
void SendByteUart(uchar val)  
{
    SBUF = val;
    while(TI == 0);
    TI = 0;
}

/*enable watch dog----------------------------------------------------------------------------*/
//使能看门狗
void EnableDog(void)
{
	WDTRST = 0x1E;
	WDTRST = 0xE1;
}

/*kick the dog---------------------------------------------------------------------------------*/
//喂狗
void KickDog(void)
{
	WDTRST = 0x1E;
	WDTRST = 0xE1;
}