📄 4x4key.s
字号:
.module _4x4key.c
.area text(rom, con, rel)
.dbfile E:\MYWORK~1\开发设计\EasyAVR\程序范例\Mega16例程\4x4key\4x4key.c
.dbfunc e KEY_Init _KEY_Init fV
.even
_KEY_Init::
.dbline -1
.dbline 96
; /****************************************Copyright (c)**************************************************
; ** ADEmbed Development Co.,LTD.
; ** http://www.adembed.com
; **--------------File Info-------------------------------------------------------------------------------
; ** File name: main.c
; ** Last modified Date: 2008-12-13
; ** Last Version: 1.0
; ** Descriptions: 4*4Key Test.
; **
; **------------------------------------------------------------------------------------------------------
; ** Created by: junbolu
; ** Created date: 2008-12-13
; ** Version: 1.0
; ** Descriptions:
; **
; **------------------------------------------------------------------------------------------------------
; ** Modified by:
; ** Modified date:
; ** Version:
; ** Descriptions:
; **
; **------------------------------------------------------------------------------------------------------
; **ICC-AVR application builder : 2008-12-13
; **Target : M16
; **Crystal: 7.3728Mhz
; **PA0--->L1 PA1--->L2 PA2--->L3 PA3--->L4
; **PA4--->H1 PA5--->H2 PA6--->H3 PA7--->H4
; --------------------------
; | H4 C D E F |
; | H3 8 9 A B |
; | H2 4 5 6 7 |
; | H1 0 1 2 3 |
; | / L1 L2 L3 L4 |
; --------------------------
; **描述：扫描4*4按键的状态，扫描到按键被按下后，将此键码发送到串口
; **
; **
; **涉及知识点：
; ** DI输入DO输出
; ** while循环,case循环
; ** 8位定时器，串口的应用
; *******************************************************************************************************/
;
; #include<iom16v.h>
; #include<macros.h>
; #include"Define.h"
;
;
; #define F_osc 7372800
; #define Baud_rate 9600
; //管脚定义
; #define PIN_RXD 0 //PD0 RXD
; #define PIN_TXD 1 //PD1 TXD
;
;
; #define L1 BIT0
; #define L2 BIT1
; #define L3 BIT2
; #define L4 BIT3
; #define H1 BIT4
; #define H2 BIT5
; #define H3 BIT6
; #define H4 BIT7
;
; #define KEY_DDR DDRA
; #define KEY_PORT PORTA
; #define KEY_IN PINA
;
;
; #define L1_H1 0x00
; #define L2_H1 0x01
; #define L3_H1 0x02
; #define L4_H1 0x03
; #define L1_H2 0x04
; #define L2_H2 0x05
; #define L3_H2 0x06
; #define L4_H2 0x07
; #define L1_H3 0x08
; #define L2_H3 0x09
; #define L3_H3 0x0A
; #define L4_H3 0x0B
; #define L1_H4 0x0C
; #define L2_H4 0x0D
; #define L3_H4 0x0E
; #define L4_H4 0x0F
;
; #define ON_PUSH 0xFF
;
; unsigned char Key_State;
; unsigned char Key_Value;
;
; void Uart_Init(void);
; void USART_TXD(uint8 data);
;
; void KEY_Init(void)
; {
.dbline 97
; KEY_DDR |= L1&L2&L3&L4; //设为输出
in R2,0x1a
out 0x1a,R2
.dbline 98
; KEY_PORT|= L1&L2&L3&L4; //输出为高
in R2,0x1b
out 0x1b,R2
.dbline 99
; KEY_DDR &= ~(H1&H2&H3&H4); //设为输入
in R24,0x1a
andi R24,255
out 0x1a,R24
.dbline 100
; KEY_PORT|= H1&H2&H3&H4; //上拉输入
in R2,0x1b
out 0x1b,R2
.dbline 103
;
; //t/c0初始化
; TCCR0=0X0D;
ldi R24,13
out 0x33,R24
.dbline 104
; TCNT0=0X00;
clr R2
out 0x32,R2
.dbline 105
; OCR0=0XF0; //定时30ms
ldi R24,240
out 0x3c,R24
.dbline 106
; TIMSK|=0X02;
in R24,0x39
ori R24,2
out 0x39,R24
.dbline -2
L1:
.dbline 0 ; func end
ret
.dbend
.area vector(rom, abs)
.org 76
jmp _timer0comp
.area text(rom, con, rel)
.dbfile E:\MYWORK~1\开发设计\EasyAVR\程序范例\Mega16例程\4x4key\4x4key.c
.dbfunc e timer0comp _timer0comp fV
.even
_timer0comp::
xcall push_lset
.dbline -1
.dbline 112
;
; }
;
; #pragma interrupt_handler timer0comp:20
; void timer0comp (void)
; {
.dbline 113
; Read_Key();
xcall _Read_Key
.dbline -2
L2:
xcall pop_lset
.dbline 0 ; func end
reti
.dbend
.dbfunc e KEYDIN _KEYDIN fc
.even
_KEYDIN::
.dbline -1
.dbline 118
; }
;
; //=======================================================================
; unsigned char KEYDIN(void)
; {
.dbline 119
; KEY_PORT |= L1&L2&L3&L4; //输出为高
in R2,0x1b
out 0x1b,R2
.dbline 120
; KEY_PORT &= ~L1; //扫描L1
cbi 0x1b,0
.dbline 122
;
; if((KEY_IN&H1)==H1) return L1_H1;
in R24,0x19
andi R24,16
cpi R24,16
brne L4
.dbline 122
clr R16
xjmp L3
L4:
.dbline 123
; if((KEY_IN&H2)==H2) return L1_H2;
in R24,0x19
andi R24,32
cpi R24,32
brne L6
.dbline 123
ldi R16,4
xjmp L3
L6:
.dbline 124
; if((KEY_IN&H3)==H3) return L1_H3;
in R24,0x19
andi R24,64
cpi R24,64
brne L8
.dbline 124
ldi R16,8
xjmp L3
L8:
.dbline 125
; if((KEY_IN&H4)==H4) return L1_H4;
in R24,0x19
andi R24,128
cpi R24,128
brne L10
.dbline 125
ldi R16,12
xjmp L3
L10:
.dbline 127
;
; KEY_PORT |= L1&L2&L3&L4; //输出为高
in R2,0x1b
out 0x1b,R2
.dbline 128
; KEY_PORT &= ~L2; //扫描L2
cbi 0x1b,1
.dbline 130
;
; if((KEY_IN&H1)==H1) return L2_H1;
in R24,0x19
andi R24,16
cpi R24,16
brne L12
.dbline 130
ldi R16,1
xjmp L3
L12:
.dbline 131
; if((KEY_IN&H2)==H2) return L2_H2;
in R24,0x19
andi R24,32
cpi R24,32
brne L14
.dbline 131
ldi R16,5
xjmp L3
L14:
.dbline 132
; if((KEY_IN&H3)==H3) return L2_H3;
in R24,0x19
andi R24,64
cpi R24,64
brne L16
.dbline 132
ldi R16,9
xjmp L3
L16:
.dbline 133
; if((KEY_IN&H4)==H4) return L2_H4;
in R24,0x19
andi R24,128
cpi R24,128
brne L18
.dbline 133
ldi R16,13
xjmp L3
L18:
.dbline 135
;
; KEY_PORT |= L1&L2&L3&L4; //输出为高
in R2,0x1b
out 0x1b,R2
.dbline 136
; KEY_PORT &= ~L3; //扫描L3
cbi 0x1b,2
.dbline 138
;
; if((KEY_IN&H1)==H1) return L3_H1;
in R24,0x19
andi R24,16
cpi R24,16
brne L20
.dbline 138
ldi R16,2
xjmp L3
L20:
.dbline 139
; if((KEY_IN&H2)==H2) return L3_H2;
in R24,0x19
andi R24,32
cpi R24,32
brne L22
.dbline 139
ldi R16,6
xjmp L3
L22:
.dbline 140
; if((KEY_IN&H3)==H3) return L3_H3;
in R24,0x19
andi R24,64
cpi R24,64
brne L24
.dbline 140
ldi R16,10
xjmp L3
L24:
.dbline 141
; if((KEY_IN&H4)==H4) return L3_H4;
in R24,0x19
andi R24,128
cpi R24,128
brne L26
.dbline 141
ldi R16,14
xjmp L3
L26:
.dbline 143
;
; KEY_PORT |= L1&L2&L3&L4; //输出为高
in R2,0x1b
out 0x1b,R2
.dbline 144
; KEY_PORT &= ~L4; //扫描L4
cbi 0x1b,3
.dbline 146
;
; if((KEY_IN&H1)==H1) return L4_H1;
in R24,0x19
andi R24,16
cpi R24,16
brne L28
.dbline 146
ldi R16,3
xjmp L3
L28:
.dbline 147
; if((KEY_IN&H2)==H2) return L4_H2;
in R24,0x19
andi R24,32
cpi R24,32
brne L30
.dbline 147
ldi R16,7
xjmp L3
L30:
.dbline 148
; if((KEY_IN&H3)==H3) return L4_H3;
in R24,0x19
andi R24,64
cpi R24,64
brne L32
.dbline 148
ldi R16,11
xjmp L3
L32:
.dbline 149
; if((KEY_IN&H4)==H4) return L4_H4;
in R24,0x19
andi R24,128
cpi R24,128
brne L34
.dbline 149
ldi R16,15
xjmp L3
L34:
.dbline 151
;
; return ON_PUSH;
ldi R16,255
.dbline -2
L3:
.dbline 0 ; func end
ret
.dbend
.dbfunc e Read_Key _Read_Key fV
.even
_Read_Key::
xcall push_gset1
.dbline -1
.dbline 157
;
; }
;
; //=======================================================================
; void Read_Key(void)
; {
.dbline 158
; switch(Key_State)
lds R20,_Key_State
clr R21
cpi R20,0
cpc R20,R21
breq L40
X0:
cpi R20,1
ldi R30,0
cpc R21,R30
breq L43
cpi R20,2
ldi R30,0
cpc R21,R30
breq L46
xjmp L37
X1:
.dbline 159
; {
L40:
.dbline 161
; case 0:
; if(KEYDIN() != ON_PUSH)
xcall _KEYDIN
cpi R16,255
breq L38
.dbline 162
; {
.dbline 163
; Key_State++;
lds R24,_Key_State
subi R24,255 ; addi 1
sts _Key_State,R24
.dbline 164
; }
.dbline 165
; break;
xjmp L38
L43:
.dbline 167
; case 1:
; if(KEYDIN() != ON_PUSH)
xcall _KEYDIN
cpi R16,255
breq L44
.dbline 168
; {
.dbline 169
; Key_State++;
lds R24,_Key_State
subi R24,255 ; addi 1
sts _Key_State,R24
.dbline 170
; Key_Value=KEYDIN();
xcall _KEYDIN
sts _Key_Value,R16
.dbline 171
; }
xjmp L38
L44:
.dbline 173
; else
; {
.dbline 174
; Key_State--;
lds R24,_Key_State
subi R24,1
sts _Key_State,R24
.dbline 175
; }
.dbline 176
; break;
xjmp L38
L46:
.dbline 178
; case 2:
; if(KEYDIN() == ON_PUSH)
xcall _KEYDIN
cpi R16,255
brne L38
.dbline 179
; {
.dbline 180
; Key_State=0;
clr R2
sts _Key_State,R2
.dbline 181
; }
.dbline 182
; break;
L37:
L38:
.dbline -2
L36:
xcall pop_gset1
.dbline 0 ; func end
ret
.dbend
.dbfunc e main _main fV
.even
_main::
.dbline -1
.dbline 188
; }
;
; }
;
; void main(void)
; {
.dbline 189
; KEY_Init();
xcall _KEY_Init
.dbline 191
;
; Key_State = 0;
clr R2
sts _Key_State,R2
.dbline 192
; Key_Value = ON_PUSH;
ldi R24,255
sts _Key_Value,R24
.dbline 194
;
; Uart_Init(); //TART初始化
xcall _Uart_Init
.dbline 195
; SEI(); //全局中断使能
sei
xjmp L51
L50:
.dbline 198
;
; while(1)
; {
.dbline 199
; if(Key_Value != ON_PUSH)
lds R24,_Key_Value
cpi R24,255
breq L53
.dbline 200
; {
.dbline 201
; USART_TXD(Key_Value);
mov R16,R24
xcall _USART_TXD
.dbline 202
; Key_Value = ON_PUSH;
ldi R24,255
sts _Key_Value,R24
.dbline 203
; }
L53:
.dbline 204
L51:
.dbline 197
xjmp L50
X2:
.dbline -2
L49:
.dbline 0 ; func end
ret
.dbend
.dbfunc e Uart_Init _Uart_Init fV
.even
_Uart_Init::
.dbline -1
.dbline 209
; }
; }
;
; //===============================================================
; void Uart_Init(void) //UART初始化
; {
.dbline 213
;
; //设置侦格式
; //异步，8位数据，无奇偶校验，一个停止位，无倍速
; UCSRC=(1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);
ldi R24,134
out 0x20,R24
.dbline 216
;
; //设置波特率
; UBRRL= (F_osc/Baud_rate/16-1)%256;
ldi R24,47
out 0x9,R24
.dbline 217
; UBRRH= (F_osc/Baud_rate/16-1)/256;
clr R2
out 0x20,R2
.dbline 220
;
; //使能接收中断，使能接收，使能发送
; UCSRB = (1<<RXCIE)|(1<<RXEN)|(1<<TXEN);
ldi R24,152
out 0xa,R24
.dbline -2
L55:
.dbline 0 ; func end
ret
.dbend
.dbfunc e USART_TXD _USART_TXD fV
; data -> R16
.even
_USART_TXD::
.dbline -1
.dbline 226
; }
;
;
; //===============================================================
; void USART_TXD(uint8 data) //发送采用查询方式
; {
L57:
.dbline 227
L58:
.dbline 227
; while( !(UCSRA & BIT(UDRE)) );
sbis 0xb,5
rjmp L57
.dbline 228
; UDR=data;
out 0xc,R16
L60:
.dbline 229
L61:
.dbline 229
; while( !(UCSRA & BIT(TXC )) );
sbis 0xb,6
rjmp L60
.dbline 230
; UCSRA|=BIT(TXC);
sbi 0xb,6
.dbline -2
L56:
.dbline 0 ; func end
ret
.dbsym r data 16 c
.dbend
.area vector(rom, abs)
.org 44
jmp _USART_RXC
.area text(rom, con, rel)
.dbfile E:\MYWORK~1\开发设计\EasyAVR\程序范例\Mega16例程\4x4key\4x4key.c
.dbfunc e USART_RXC _USART_RXC fV
.even
_USART_RXC::
.dbline -1
.dbline 237
; }
;
; //=======================================================================
;
; #pragma interrupt_handler USART_RXC:12
; void USART_RXC(void)
; {
.dbline -2
L63:
.dbline 0 ; func end
reti
.dbend
.area bss(ram, con, rel)
.dbfile E:\MYWORK~1\开发设计\EasyAVR\程序范例\Mega16例程\4x4key\4x4key.c
_Key_Value::
.blkb 1
.dbsym e Key_Value _Key_Value c
_Key_State::
.blkb 1
.dbsym e Key_State _Key_State c
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -