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Keypad 的代码
keypad.c
#include
/*键盘扫描函数,没有键按下返回0x7f*/
/*如果shift按下，返回值最高位为1*/
extern void delay_ms(unsigned int time);
unsigned char scan_key(void)
{
unsigned char i,temp;
unsigned shift=0;
keypad._c
#include
/*键盘扫描函数,没有键按下返回0x7f*/
/*如果shift按下，返回值最高位为1*/
extern void delay_ms(unsigned int time);
unsigned char scan_key(void)
{
unsigned char i,temp;
unsigned shift=0;
keypad.lis
.module keypad.c
.area text(rom, con, rel)
0000 .dbfile C:\work\mega128\mix_exp\keypad.c
0000 .dbfunc e scan_ke
keypad.s
.module keypad.c
.area text(rom, con, rel)
.dbfile C:\work\mega128\mix_exp\keypad.c
.dbfunc e scan_key _scan_key fc
; shift -> R22,R23
; i -> R10
; temp -> R1
keypad.o
XL
H 1 areas 8 global symbols
M keypad.c
S push_gset2 Ref0000
S push_gset4 Ref0000
S lsl8 Ref0000
S pop_gset2 Ref0000
S pop_gset4 Ref0000
S _delay_ms Ref0000
A text size 12C flags 0
dbfile C
keypad.c
#include
/*键盘扫描函数,没有键按下返回0x7f*/
/*如果shift按下，返回值最高位为1*/
extern delay_1ms(void);
void delay_ms(unsigned int n);
unsigned char scan_key(void)
{
unsigned char i,temp;
unsigne
keypad.lis
.module keypad.c
.area text(rom, con, rel)
0000 .dbfile D:\ICC-AVR\Pc_At\keypad.c
0000 .dbfunc s scan_key _sc