📄 lcd.s
字号:
.module lcd.c
.area text(rom, con, rel)
.dbfile F:\programme\RF905\lcd.c
.dbfunc e delay _delay fV
; i -> R20,R21
; times -> R16,R17
.even
_delay::
rcall push_gset1
.dbline -1
.dbline 21
; ///****************************************************************//
; //液晶显示模块，采用ATmega8单片机和OCM4*8液晶，串行方式
; //采用PORTD的高三位
; //pd5---lcd_cs
; //pd7---lcd_sdat
; //pd6---lcd_sclk
; //周金广2006年7月20日整理
; ///****************************************************************//
; ///////////////////////////////////////////////////
; //lcd初始化程序
; //////////////////////////////////////////////////
; #include <stdio.h>
; #include <iom8v.h>
; #include <macros.h>
;
;
; ///////////////////////////////////////////////
; //
; //////////////////////////////////////////////
; void delay(unsigned int times)
; {unsigned int i;
.dbline 22
; for(i=0;i<times;i++)
clr R20
clr R21
rjmp L5
L2:
.dbline 23
L3:
.dbline 22
subi R20,255 ; offset = 1
sbci R21,255
L5:
.dbline 22
cp R20,R16
cpc R21,R17
brlo L2
.dbline -2
L1:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r i 20 i
.dbsym r times 16 i
.dbend
.dbfunc e lcd_send_byte _lcd_send_byte fV
; data1 -> R20,R21
; i -> R22,R23
; data -> R10
.even
_lcd_send_byte::
rcall push_gset3
mov R10,R16
.dbline -1
.dbline 27
; ;
; }
;
; void lcd_send_byte(char data)
; {unsigned int i,data1;
.dbline 28
; for(i=0;i<8;i++)
clr R22
clr R23
rjmp L10
L7:
.dbline 29
; {data1=data&0x80; //test data bit7 为零则放送零，为一则放送一
.dbline 29
mov R20,R10
clr R21
andi R20,128
andi R21,0
.dbline 30
; if(data1!=0)
cpi R20,0
cpc R20,R21
breq L11
X0:
.dbline 31
; { PORTD|=BIT(PD7);
.dbline 31
sbi 0x12,7
.dbline 32
; delay(20);
ldi R16,20
ldi R17,0
rcall _delay
.dbline 33
; }
rjmp L12
L11:
.dbline 34
; else {PORTD&=~BIT(PD7); ///当单片机速度太快时，加延时
.dbline 34
cbi 0x12,7
.dbline 35
; delay(20); }
ldi R16,20
ldi R17,0
rcall _delay
.dbline 35
L12:
.dbline 38
sbi 0x12,6
.dbline 40
cbi 0x12,6
.dbline 41
lsl R10
.dbline 42
L8:
.dbline 28
subi R22,255 ; offset = 1
sbci R23,255
L10:
.dbline 28
cpi R22,8
ldi R30,0
cpc R23,R30
brlo L7
.dbline -2
L6:
rcall pop_gset3
.dbline 0 ; func end
ret
.dbsym r data1 20 i
.dbsym r i 22 i
.dbsym r data 10 c
.dbend
.dbfunc e lcd_write_data _lcd_write_data fV
; data2 -> R22
; data1 -> R10
; data3 -> R20
; data -> R20
.even
_lcd_write_data::
rcall push_gset3
mov R20,R16
.dbline -1
.dbline 48
;
; //PORTD=PORTD&data;
; PORTD|=BIT(PD6); // set sclk high
;
; PORTD&=~BIT(PD6); // set sclk low
; data=data<<1;
; }
; }
; /////////////////////////////////////////////////////////////
; ////
; ////////////////////////////////////////////////////////////
; void lcd_write_data(char data)
; {char data1=0xfa,data2,data3;
.dbline 48
ldi R24,250
mov R10,R24
.dbline 50
;
; PORTD|=BIT(PD5); //set cs high
sbi 0x12,5
.dbline 52
;
; data2=data&0xf0;
mov R22,R20
andi R22,240
.dbline 53
; data3=data&0x0f;
andi R20,15
.dbline 54
; data3=data3<<4;
mov R24,R20
andi R24,#0x0F
swap R24
mov R20,R24
.dbline 56
;
; lcd_send_byte(data1);
mov R16,R10
rcall _lcd_send_byte
.dbline 57
; lcd_send_byte(data2);
mov R16,R22
rcall _lcd_send_byte
.dbline 58
; lcd_send_byte(data3);
mov R16,R20
rcall _lcd_send_byte
.dbline 60
;
; PORTD&=~BIT(PD5); //set cs low
cbi 0x12,5
.dbline -2
L13:
rcall pop_gset3
.dbline 0 ; func end
ret
.dbsym r data2 22 c
.dbsym r data1 10 c
.dbsym r data3 20 c
.dbsym r data 20 c
.dbend
.dbfunc e lcd_write_comm _lcd_write_comm fV
; data2 -> R22
; data1 -> R10
; data3 -> R20
; data -> R20
.even
_lcd_write_comm::
rcall push_gset3
mov R20,R16
.dbline -1
.dbline 68
;
; }
; /////////////////////////////////////////////////////////////
; ////
; ////////////////////////////////////////////////////////////
; void lcd_write_comm(char data)
; //int data;
; {char data1=0xf8,data2,data3;
.dbline 68
ldi R24,248
mov R10,R24
.dbline 69
; PORTD|=BIT(PD5); //set cs high
sbi 0x12,5
.dbline 71
;
; data2=data&0xf0;
mov R22,R20
andi R22,240
.dbline 72
; data3=data&0x0f;
andi R20,15
.dbline 73
; data3=data3<<4;
mov R24,R20
andi R24,#0x0F
swap R24
mov R20,R24
.dbline 75
;
; lcd_send_byte(data1);
mov R16,R10
rcall _lcd_send_byte
.dbline 76
; lcd_send_byte(data2);
mov R16,R22
rcall _lcd_send_byte
.dbline 77
; lcd_send_byte(data3);
mov R16,R20
rcall _lcd_send_byte
.dbline 79
;
; PORTD&=~BIT(PD5); //set cs low
cbi 0x12,5
.dbline -2
L14:
rcall pop_gset3
.dbline 0 ; func end
ret
.dbsym r data2 22 c
.dbsym r data1 10 c
.dbsym r data3 20 c
.dbsym r data 20 c
.dbend
.dbfunc e lcd_initial _lcd_initial fV
.even
_lcd_initial::
.dbline -1
.dbline 83
;
; }
; void lcd_initial(void)
; {
.dbline 85
;
; lcd_write_comm(0x30); //基本指令集
ldi R16,48
rcall _lcd_write_comm
.dbline 86
; lcd_write_comm(0x01); //清除显示屏幕，把DDRAM位址计数器调整为"00H"
ldi R16,1
rcall _lcd_write_comm
.dbline 87
; lcd_write_comm(0x03); //把DDRAM位址计数器调整为"00H"，游标回原点，该功能不影响显示DDRAM
ldi R16,3
rcall _lcd_write_comm
.dbline 88
; lcd_write_comm(0x06); //光标右移
ldi R16,6
rcall _lcd_write_comm
.dbline 89
; lcd_write_comm(0x0c); //显示屏打开
ldi R16,12
rcall _lcd_write_comm
.dbline -2
L15:
.dbline 0 ; func end
ret
.dbend
.dbfunc e screen _screen fV
; j -> <dead>
; i -> R20,R21
; data -> R22,R23
.even
_screen::
rcall push_gset2
movw R22,R16
.dbline -1
.dbline 98
; }
; /////////////////////////////////////////////////////
; ////
; /////////////////////////////////////////////////////
;
; void screen(data)
; char data[65];
;
; {
.dbline 100
; unsigned int i,j;
; lcd_write_comm(0x08);
ldi R16,8
rcall _lcd_write_comm
.dbline 101
; for (i=0;i<64;i++)
clr R20
clr R21
rjmp L20
L17:
.dbline 102
; {lcd_write_data(data[i]);
.dbline 102
movw R30,R20
add R30,R22
adc R31,R23
ldd R16,z+0
rcall _lcd_write_data
.dbline 103
; if (i==15)
cpi R20,15
ldi R30,0
cpc R21,R30
brne L21
.dbline 104
; lcd_write_comm(0x90); //设定DDRAM第二行，第一列
ldi R16,144
rcall _lcd_write_comm
L21:
.dbline 105
; if (i==31)
cpi R20,31
ldi R30,0
cpc R21,R30
brne L23
.dbline 106
; lcd_write_comm(0x88); //设定DDRAM第三行，第一列
ldi R16,136
rcall _lcd_write_comm
L23:
.dbline 107
; if (i==47)
cpi R20,47
ldi R30,0
cpc R21,R30
brne L25
.dbline 108
; lcd_write_comm(0x98); //设定DDRAM第四行，第一列
ldi R16,152
rcall _lcd_write_comm
L25:
.dbline 109
; if (i==63)
cpi R20,63
ldi R30,0
cpc R21,R30
brne L27
.dbline 110
; lcd_write_comm(0x80); //设定DDRAM第一行，第一列
ldi R16,128
rcall _lcd_write_comm
L27:
.dbline 111
L18:
.dbline 101
subi R20,255 ; offset = 1
sbci R21,255
L20:
.dbline 101
cpi R20,64
ldi R30,0
cpc R21,R30
brlo L17
.dbline 112
; }
; lcd_write_comm(0x0c);
ldi R16,12
rcall _lcd_write_comm
.dbline -2
L16:
rcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l j 1 i
.dbsym r i 20 i
.dbsym r data 22 pc
.dbend
.dbfunc e fanxian _fanxian fV
; y -> R20
; x -> R22
; j -> R10
; i -> R12
; hang -> R14
.even
_fanxian::
rcall push_gset5
mov R14,R16
.dbline -1
.dbline 116
; }
; //////////////////////////////////
; void fanxian(unsigned char hang) // 0x80-1 0x90-2 0x88-3 0x98-4
; {
.dbline 118
; unsigned char x,y,i,j;
; lcd_write_comm(0x34); //开启绘图功能显示
ldi R16,52
rcall _lcd_write_comm
.dbline 119
; lcd_write_comm(0x34);
ldi R16,52
rcall _lcd_write_comm
.dbline 121
;
; y=0x80;
ldi R20,128
.dbline 122
; x=0x80;
ldi R22,128
.dbline 123
; lcd_write_data(0x00);
clr R16
rcall _lcd_write_data
.dbline 124
; lcd_write_comm(x); //设置x 坐标
mov R16,R22
rcall _lcd_write_comm
.dbline 125
; lcd_write_comm(y);
mov R16,R20
rcall _lcd_write_comm
.dbline 126
; for (j=0;j<32;j++)
clr R10
rjmp L33
L30:
.dbline 127
; {for (i=0;i<16;i++)
.dbline 127
clr R12
rjmp L37
L34:
.dbline 128
clr R16
rcall _lcd_write_data
L35:
.dbline 127
inc R12
L37:
.dbline 127
mov R24,R12
cpi R24,16
brlo L34
.dbline 131
mov R24,R22
subi R24,255 ; addi 1
mov R22,R24
mov R16,R24
rcall _lcd_write_comm
.dbline 132
mov R16,R20
rcall _lcd_write_comm
.dbline 134
L31:
.dbline 126
inc R10
L33:
.dbline 126
mov R24,R10
cpi R24,32
brlo L30
.dbline 136
; lcd_write_data(0x00);
;
;
; lcd_write_comm(++x);
; lcd_write_comm(y);
;
; }
;
; y=0x88;
ldi R20,136
.dbline 137
; x=0x80;
ldi R22,128
.dbline 138
; lcd_write_data(0x00);
clr R16
rcall _lcd_write_data
.dbline 139
; lcd_write_comm(x);
mov R16,R22
rcall _lcd_write_comm
.dbline 140
; lcd_write_comm(y);
mov R16,R20
rcall _lcd_write_comm
.dbline 141
; for (j=32;j<64;j++)
ldi R24,32
mov R10,R24
rjmp L41
L38:
.dbline 142
; {for (i=0;i<16;i++)
.dbline 142
clr R12
rjmp L45
L42:
.dbline 143
clr R16
rcall _lcd_write_data
L43:
.dbline 142
inc R12
L45:
.dbline 142
mov R24,R12
cpi R24,16
brlo L42
.dbline 144
mov R24,R22
subi R24,255 ; addi 1
mov R22,R24
mov R16,R24
rcall _lcd_write_comm
.dbline 145
mov R16,R20
rcall _lcd_write_comm
.dbline 148
L39:
.dbline 141
inc R10
L41:
.dbline 141
mov R24,R10
cpi R24,64
brlo L38
.dbline 150
; lcd_write_data(0x00);
; lcd_write_comm(++x);
; lcd_write_comm(y);
;
;
; }
;
; lcd_write_comm(0x36); //开启绘图功能显示
ldi R16,54
rcall _lcd_write_comm
.dbline 152
;
; if(hang==1)
mov R24,R14
cpi R24,1
brne L46
.dbline 153
; {
.dbline 154
; y=0x80;
ldi R20,128
.dbline 155
; x=0x80;}
ldi R22,128
.dbline 155
rjmp L47
L46:
.dbline 156
; else if(hang==2)
mov R24,R14
cpi R24,2
brne L48
.dbline 157
; {
.dbline 158
; y=0x80;
ldi R20,128
.dbline 159
; x=0x90;}
ldi R22,144
.dbline 159
rjmp L49
L48:
.dbline 160
; else if(hang==3)
mov R24,R14
cpi R24,3
brne L50
.dbline 161
; {y=0x88;
.dbline 161
ldi R20,136
.dbline 162
; x=0x80;}
ldi R22,128
.dbline 162
rjmp L51
L50:
.dbline 164
; else
; {y=0x88;
.dbline 164
ldi R20,136
.dbline 165
; x=0x90;}
ldi R22,144
.dbline 165
L51:
L49:
L47:
.dbline 167
;
; lcd_write_comm(x); //设置x 坐标
mov R16,R22
rcall _lcd_write_comm
.dbline 168
; lcd_write_comm(y); //设置y 坐标
mov R16,R20
rcall _lcd_write_comm
.dbline 171
;
;
; for (j=0;j<16;j++)
clr R10
rjmp L55
L52:
.dbline 172
; {for (i=0;i<16;i++)
.dbline 172
clr R12
rjmp L59
L56:
.dbline 173
ldi R16,255
rcall _lcd_write_data
L57:
.dbline 172
inc R12
L59:
.dbline 172
mov R24,R12
cpi R24,16
brlo L56
.dbline 175
mov R24,R22
subi R24,255 ; addi 1
mov R22,R24
mov R16,R24
rcall _lcd_write_comm
.dbline 176
mov R16,R20
rcall _lcd_write_comm
.dbline 178
L53:
.dbline 171
inc R10
L55:
.dbline 171
mov R24,R10
cpi R24,16
brlo L52
.dbline -2
L29:
rcall pop_gset5
.dbline 0 ; func end
ret
.dbsym r y 20 c
.dbsym r x 22 c
.dbsym r j 10 c
.dbsym r i 12 c
.dbsym r hang 14 c
.dbend
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