keyboard_test.c

基于ARM9芯片的一个简单的GPRS测试程序

/*********************************************************************************************
* File name:	keyboard.c
* Author:		Embest
* Descript:		keyboard source code. 
* History:
*				H.T.Zhang, Programming modify, September 14, 2005
*********************************************************************************************/

/*------------------------------------------------------------------------------------------*/
/*	 								include files						 				    */
/*------------------------------------------------------------------------------------------*/
#include "2410lib.h"
#include "def.h"
#include "lcd.h"
//#include "iic_keybd.h"
#include "demo.h"
extern void lcd_disp_ascii8x16(UINT16T, UINT16T, UINT8T, UINT8T *);
/*------------------------------------------------------------------------------------------*/
/*	 								global variables					 				    */
/*------------------------------------------------------------------------------------------*/
int f_nKeyPress;
extern UINT8T f_ucChar;
/*------------------------------------------------------------------------------------------*/
/*	 								function declare										*/
/*------------------------------------------------------------------------------------------*/
void keyboard_test(void);
void keyboard_init(void);
void keyboard_int(void);//__attribute__ ((interrupt ("IRQ")));
UINT8T key_set(UINT8T ucChar);
extern void isrEINT1(void);

//static	char f_nKeyPress=0;

/*********************************************************************************************
* name:		keyboard_init
* func:		keyboard initialize
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void keyboard_init(void)
{
	int i;
	
	// initiaze the 8led-function first of ZLG7290 (more to see ZLG7290.pdf)
	// precent the invalid sign generated while keyboard-function
	iic_init_8led();	
	for(i=0; i<8; i++)
	{
		iic_write_8led(0x70, 0x10+i, 0xFF);		// write data to DpRam0~DpRam7(Register of ZLG7290)
		delay(5);
	}

	iic_init_keybd();							// enable IIC and EINT1 int
	// set EINT1 interrupt handler
    pISR_EINT1 = (int)isrEINT1;//keyboard_int;
}

/*********************************************************************************************
* name:		keyboard_test
* func:		test keyboard
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void keyboard_test(void)
{
	int i;
	i = 0;	
	f_ucChar = 0;
	f_nKeyPress = 0;
	while(f_ucChar != 2 )
	{
		while(!f_nKeyPress);
		f_nKeyPress = 0;
		iic_read_keybd(0x70, 0x1, &f_ucChar);
		f_ucChar = key_set(f_ucChar);
		if(i > 6) i = 0;
		lcd_clr_rect(100,60+20*i,205,60+20*(i+1),BLUE);
		switch(f_ucChar)
		{
			case 0:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 0");
				break;
			case 1:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 1");
				break;			
//			case 2:
//				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 2");
//				break;
			case 3:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 3");
				break;
			case 4:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 4");
				break;
			case 5:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 5");
				break;
			case 6:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 6");
				break;
			case 7:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 7");
				break;
			case 8:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 8");
				break;
			case 9:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key 9");
				break;
			case 10:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key A");
				break;
			case 11:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key B");
				break;
			case 12:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key C");
				break;
			case 13:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key D");
				break;
			case 14:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key E");
				break;
			case 0xF:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key F");
				break;
			case '+':
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key +");
				break;
			case '-':
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key -");
				break;
			case '*':
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key *");
				break;
			case 0xFF:
				lcd_disp_ascii8x16(100,60+20*i ,WHITE,"press key Fun");		
				break;
			default:
				break;
		}
		i++;			
	}
}
/*********************************************************************************************
* name:		key_set
* func:		keyboard setting
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
UINT8T key_set(UINT8T ucChar)
{
	switch(ucChar)
	{
		case 1:
		case 2:
		case 3:
		case 4:
		case 5:
				ucChar-=1; break;
		case 9:
		case 10:
		case 11:
		case 12:
		case 13:
				ucChar-=4; break;
		case 17:
		case 18:
		case 19:
		case 20:
		case 21:
				ucChar-=7; break;
		case 25: ucChar = 0xF; break;
		case 26: ucChar = '+'; break;
		case 27: ucChar = '-'; break;
		case 28: ucChar = '*'; break;
		case 29: ucChar = 0xFF; break;
		default: ucChar = 0;
	}
	return ucChar;
}
/*********************************************************************************************
* name:		keyboard_int
* func:		keyboard interrupt handler
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void keyboard_int(void)
{
    UINT8T ucChar;
    ClearPending(BIT_EINT1);
    f_nKeyPress = 1;
#ifdef BOARDTEST
	g_nKeyPress = 0xFE;
#endif
}