displayandkey.c

建立在AVR基础上的测试LED数码管电压表

/******************************************************************************
*	Compiler:		WinAVR(GCC)
*	Device:			ATtiny13
*	File Name:		DisplayAndKey.c
*	Description:		Display and key C Program

*	Programmer:		Liansen.Wang
*	Revision:			1.0
*	Modification time:	2005-08-22	10:18

******************************************************************************/
#include "DisplayAndKey.h"

/*****************************************************************************/

extern unsigned char 	Display_data[Display_bit];
const unsigned char Display_Code[] PROGMEM = {
	0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,	//0,1,2,3,4,5,6,7
	0x7F,0x6F,0x00,0x00,0x00,0x00,0x00,0x00,	//8,9, : , ; ,<,=,>,?
	0x00,0x77,0x7C,0x39,0x5E,0x79,0x71,0x7D,	//@,A,B,C,D,E,F,G
	0x76,0x30,0x0F,0x00,0x38,0x00,0x37,0x3F,	//H,I,J,K,L,M,N,O
	0x73,0x67,0x50,0x6D,0x4E,0x3E,0x00,0x00,	//P,O,R,S,T,U,V,W
	0x00,0x6E,0x00				};	//X,Y,Z
	
/*============================================================

============================================================*/
/*void Display_All_Bit(uint8_t data)
{
unsigned char i;
for(i=0; i<Display_bit; i++)
	Display_data[i] =data;
}*/
	
/*============================================================
FUNCTION:

============================================================*/
void V_SPI_SEND(unsigned char data)
	{
	unsigned char i,outdata;
	outdata = data;
	for(i=0;	i<8;	i++)
		{
		if (outdata & 0x01)
			PORTB |= (1<<DATA);
		else
			PORTB &= ~(1<<DATA);
		PORTB &= ~(1<<SCK);
		PORTB |= (1<<SCK);
		outdata >>= 1;
		}
	}

/*============================================================
FUNCTION:	Display data send out

============================================================*/
void V_DISPLAYDATA_SEND(void)
	{
	unsigned	char i,j;
	//send LED Display Modle command	
	PORTB &= ~(1<<STB);
	V_SPI_SEND(Vfd_Display_Modle);
	PORTB|= (1<<STB);
	
	//Send Led Display Data modle command
	PORTB &= ~(1<<STB);
	V_SPI_SEND(Vfd_Display_DataOut);
	PORTB|= (1<<STB);
	
	//Send LED Display Data address
	PORTB &= ~(1<<STB);
	V_SPI_SEND(Vfd_Display_Addr);
	
	//send LED Display Data
	for (i=0; i<7; i++)
		{
		for(j=0;	j<16;j++)
			{
	
			if(Display_data[j] & (1<< i))
				{
				PORTB |= (1<<DATA);
				}
			else
				{
				PORTB &= ~(1<<DATA);
				}
			PORTB &= ~(1<<SCK);
			PORTB |= (1<<SCK);	
			}
		}
	PORTB |= (1<<STB);
	
	//Send Led Display ON command
	PORTB &= ~(1<<STB);
	V_SPI_SEND(Vfd_Display_Corl);
	PORTB|= (1<<STB);	

	
	}


/*============================================================
FUNCTION: VFD KEY DATA IN


============================================================*/
unsigned char V_Kay_Scan(void)
	{
	
	unsigned char i;
	unsigned char data;	
	PORTB &= ~(1<<STB);
	
	//send Key value read command	
	V_SPI_SEND(Vfd_Display_DataIn);
	data = 0xFF;
	//read key value
	DDRB &= ~(1<<DATA);
	for(i=0;	i<40;i++	)
		{
			PORTB &= ~(1<<SCK);
			PORTB &= ~(1<<SCK);			
			PORTB |= (1<<SCK);
			PORTB |= (1<<SCK);		
			if(PINB & (1<<DATA))
				{
				data = i;
				}
		}

	DDRB |= (1<<DATA);
	PORTB|= (1<<STB);
	return data;
	}
/*============================================================

============================================================*/
void Display (char *Keydata)
{
Display_data[9]=pgm_read_byte(Display_Code+((*(Keydata+0)) -0x30));
Display_data[8]=pgm_read_byte(Display_Code+((*(Keydata+1)) -0x30));
Display_data[7]=pgm_read_byte(Display_Code+((*(Keydata+2)) -0x30));
Display_data[0]=pgm_read_byte(Display_Code+((*(Keydata+3)) -0x30));
Display_data[1]=pgm_read_byte(Display_Code+((*(Keydata+4)) -0x30));
Display_data[2]=pgm_read_byte(Display_Code+((*(Keydata+5)) -0x30));//AVR Flash 
Display_data[3]=pgm_read_byte(Display_Code+((*(Keydata+6)) -0x30));
Display_data[4]=pgm_read_byte(Display_Code+((*(Keydata+7)) -0x30));
Display_data[5]=pgm_read_byte(Display_Code+((*(Keydata+8)) -0x30));
}