keyled.c

基于单片机C8051F020

#include <c8051f020.h >
#include "keyled.h"
#include "iic.h"

void Keyled_Config (void) {



	WDTCN = 0x07;	// Watchdog Timer Control Register
    WDTCN = 0xDE;   // Disable WDT
    WDTCN = 0xAD;



	XBR0      = 0xE7;  
    XBR1      = 0x05;
    XBR2      = 0x44;

    P0MDOUT = 0x1D; // Output configuration for P0 
 



	OSCXCN = 0x00;	// EXTERNAL Oscillator Control Register	

	OSCICN = 0x06;	// Internal Oscillator Control Register

	


	SMB0CN = 0x40;	// SMBus Control Register
	SMB0ADR = 0xA0;	// SMBus Address Register
	SMB0CR = 0x60;	// SMBus Clock Rate Register

	IT0=1;			// INT0 IS  mode 1

}  

void Delay_zlg7290(unsigned int time )
{
	while(time--);
}

void  Print_zlg7290( unsigned char bits, unsigned char content )
{


		  unsigned char temp[2];
		  temp[0]=(0x60+bits);
		  temp[1]=content;
		
		  SmbSend ( 0x70 ,0x07 ,2, temp );			
		  Delay_zlg7290(2000);	
}
	

unsigned char   Wait_Key( )
{		
		unsigned char  keyvalue[1];
	    
		IE0=0;
		while ( IE0==0 );
		SmbRec( 0x70,0x01,2,keyvalue);
		
		return(keyvalue[0]);		
}

void Clear_zlg7290( )
{		
	unsigned char i;
		for(i=0;i<8;i++)
		{
			Print_zlg7290(i,0x1f);
			 
		}
}

void Disp_Shift( unsigned char direction, unsigned char shiftnum)
{
	unsigned char command[1];
		command[0]=direction+shiftnum-1;
		
		SmbSend(0x70,0x07,1, command );
}