📄 lcd_1602_driver.s
字号:
rcall pop_gset5
adiw R28,2
.dbline 0 ; func end
ret
.dbsym r c 10 c
.dbsym r b 12 c
.dbsym l lcd 0 A[10:10]c
.dbsym r i 14 c
.dbsym r e 6 c
.dbsym r s 8 pkc
.dbsym l dat 24 l
.dbsym l d 22 c
.dbsym l y 20 c
.dbsym r x 14 c
.dbend
.area lit(rom, con, rel)
L78:
.byte 0
.byte 0,0,0,0,0,0,0
.area text(rom, con, rel)
.dbfile E:\刻录的\电子技术\项目\驱动程序\LCD1602四线接口应用范例\LCD_1602_Driver.c
.dbfunc e LCD_write_time _LCD_write_time fV
; lcd -> y+0
; i -> R20
; s -> y+16
; m -> y+14
; h -> y+12
; y -> R22
; x -> R20
.even
_LCD_write_time::
rcall push_gset2
mov R22,R18
mov R20,R16
sbiw R28,8
.dbline -1
.dbline 252
; }
; /*-----------------------------------------------------------------------
; LCD_write_time : 数字显示函数
;
; 输入参数：
; X、Y : 显示数据的起始的位置
; h,m,s :时,分,秒
; 编写日期 ：2005-10-19
; -----------------------------------------------------------------------*/
; void LCD_write_time(unsigned char x,unsigned char y,unsigned char h,unsigned char m,unsigned char s)
; {
.dbline 254
; unsigned char i;
; unsigned char lcd[8]={0};
ldi R24,<L78
ldi R25,>L78
movw R30,R28
ldi R16,8
ldi R17,0
st -y,R31
st -y,R30
st -y,R25
st -y,R24
rcall asgncblk
.dbline 255
; if(y<2)
cpi R22,2
brsh L79
.dbline 256
; add=y*16+x;//设置起始座标LCD_set_xy( X, Y );
ldi R24,16
mul R24,R22
mov R2,R0
add R2,R20
sts _add,R2
L79:
.dbline 257
; lcd[0]=h/10+48;
ldi R17,10
ldd R16,y+12
rcall div8u
mov R24,R16
subi R24,208 ; addi 48
std y+0,R24
.dbline 258
; lcd[1]=h%10+48;
ldi R17,10
ldd R16,y+12
rcall mod8u
mov R24,R16
subi R24,208 ; addi 48
std y+1,R24
.dbline 259
; lcd[2]=':';
ldi R24,58
std y+2,R24
.dbline 260
; lcd[3]=m/10+48;
ldi R17,10
ldd R16,y+14
rcall div8u
mov R24,R16
subi R24,208 ; addi 48
std y+3,R24
.dbline 261
; lcd[4]=m%10+48;
ldi R17,10
ldd R16,y+14
rcall mod8u
mov R24,R16
subi R24,208 ; addi 48
std y+4,R24
.dbline 262
; lcd[5]=':';
ldi R24,58
std y+5,R24
.dbline 263
; lcd[6]=s/10+48;
ldi R17,10
ldd R16,y+16
rcall div8u
mov R24,R16
subi R24,208 ; addi 48
std y+6,R24
.dbline 264
; lcd[7]=s%10+48;
ldi R17,10
ldd R16,y+16
rcall mod8u
mov R24,R16
subi R24,208 ; addi 48
std y+7,R24
.dbline 270
; /*时和分之间的:的闪动效果
; if(lcd[7]%2)
; lcd[2]=':';
; else
; lcd[2]=' ';*/
; for (i=0;i<8;i++)
clr R20
rjmp L91
L88:
.dbline 271
; {
.dbline 272
; if(lcd_data[add]==lcd[i])
movw R24,R28
mov R30,R20
clr R31
add R30,R24
adc R31,R25
ldd R2,z+0
ldi R24,<_lcd_data
ldi R25,>_lcd_data
lds R30,_add
clr R31
add R30,R24
adc R31,R25
ldd R3,z+0
cp R3,R2
brne L92
.dbline 273
; {}
.dbline 273
rjmp L93
L92:
.dbline 275
; else
; {data[add]=lcd[i];}
.dbline 275
movw R24,R28
mov R30,R20
clr R31
add R30,R24
adc R31,R25
ldd R2,z+0
ldi R24,<_data
ldi R25,>_data
lds R30,_add
clr R31
add R30,R24
adc R31,R25
std z+0,R2
.dbline 275
L93:
.dbline 276
lds R24,_add
subi R24,255 ; addi 1
sts _add,R24
.dbline 277
L89:
.dbline 270
inc R20
L91:
.dbline 270
cpi R20,8
brlo L88
.dbline 278
; add++;
; }
; LCD_updata;
clr R2
sts _new,R2
.dbline -2
L77:
adiw R28,8
rcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l lcd 0 A[8:8]c
.dbsym r i 20 c
.dbsym l s 16 c
.dbsym l m 14 c
.dbsym l h 12 c
.dbsym r y 22 c
.dbsym r x 20 c
.dbend
.dbfunc e LCD_write_new _LCD_write_new fV
; address -> R20
; new_add -> R22
.even
_LCD_write_new::
rcall push_gset2
.dbline -1
.dbline 287
; }
; /*----------------------------------------------------
; LCD_write_new:写显存函数
; data[]:32字节的显存
; new:显存标号
; 编写日期:2005/10/18
; -----------------------------------------------------*/
; void LCD_write_new(void)
; {
.dbline 289
; unsigned char address;
; unsigned char new_add=1;//1表示要更新地址
ldi R22,1
rjmp L96
L95:
.dbline 291
; while(new<32)//显存共32个字节,标号从0--31
; {
.dbline 292
; if(new==16)//换行
lds R24,_new
cpi R24,16
brne L98
.dbline 293
; new_add=1;
ldi R22,1
L98:
.dbline 294
; if(data[new])//跳过为0的显存
ldi R24,<_data
ldi R25,>_data
lds R30,_new
clr R31
add R30,R24
adc R31,R25
ldd R2,z+0
tst R2
brne X5
rjmp L100
X5:
.dbline 295
; {
.dbline 296
; if(new_add)//当new_add=0时表示无需更新地址
tst R22
breq L102
.dbline 297
; {
.dbline 298
; if(new>15)
ldi R24,15
lds R2,_new
cp R24,R2
brsh L104
.dbline 299
; address=0xb0+new;
mov R20,R2
subi R20,80 ; addi 176
rjmp L105
L104:
.dbline 301
; else
; address=0x80+new;
lds R20,_new
subi R20,128 ; addi 128
L105:
.dbline 302
; LCD_write_char(0,address);//设置起始地址
mov R18,R20
clr R19
clr R16
clr R17
rcall _LCD_write_char
.dbline 303
; }
L102:
.dbline 304
; LCD_write_char(1,data[new]);//写数据
ldi R24,<_data
ldi R25,>_data
lds R30,_new
clr R31
add R30,R24
adc R31,R25
ldd R18,z+0
clr R19
ldi R16,1
ldi R17,0
rcall _LCD_write_char
.dbline 305
; lcd_data[new]=data[new];
ldi R24,<_data
ldi R25,>_data
lds R30,_new
clr R31
add R30,R24
adc R31,R25
ldd R2,z+0
ldi R24,<_lcd_data
ldi R25,>_lcd_data
lds R30,_new
clr R31
add R30,R24
adc R31,R25
std z+0,R2
.dbline 306
; data[new]=0;//写完数据后,显存清0
ldi R24,<_data
ldi R25,>_data
lds R30,_new
clr R31
add R30,R24
adc R31,R25
clr R2
std z+0,R2
.dbline 307
; new_add=0;
clr R22
.dbline 308
; }
rjmp L101
L100:
.dbline 310
; else
; new_add=1;
ldi R22,1
L101:
.dbline 311
lds R24,_new
subi R24,255 ; addi 1
sts _new,R24
.dbline 312
L96:
.dbline 290
lds R24,_new
cpi R24,32
brsh X6
rjmp L95
X6:
.dbline -2
L94:
rcall pop_gset2
.dbline 0 ; func end
ret
.dbsym r address 20 c
.dbsym r new_add 22 c
.dbend
.dbfunc e LCD_write_CGRAM _LCD_write_CGRAM fV
; n -> R20
; y -> R18
; x -> R16
.even
_LCD_write_CGRAM::
rcall push_gset1
ldd R20,y+2
.dbline -1
.dbline 322
; new++;//
; }
; }
; /*----------------------------------------------------
; LCD_write_CGRAM:写CGRAM的函数
; 输入参数：
; X、Y : 显示数据的起始的位置
; n : 存入LCD的图案的编号
; 编写日期:2005/10/18
; -----------------------------------------------------*/
; void LCD_write_CGRAM(unsigned char x,unsigned char y,unsigned char n)
; {
.dbline 323
; if(y<2)
cpi R18,2
brsh L107
.dbline 324
; add=y*16+x;//设置起始座标
ldi R24,16
mul R24,R18
mov R2,R0
add R2,R16
sts _add,R2
L107:
.dbline 325
; if(n==0)//0表示空数据
tst R20
brne L109
.dbline 326
; n+=8;//所以要加上8 (0>8/1>9/2>10...7>15)
subi R20,248 ; addi 8
L109:
.dbline 327
; data[add]=n;
ldi R24,<_data
ldi R25,>_data
lds R30,_add
clr R31
add R30,R24
adc R31,R25
std z+0,R20
.dbline 328
; LCD_updata;
clr R2
sts _new,R2
.dbline -2
L106:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r n 20 c
.dbsym r y 18 c
.dbsym r x 16 c
.dbend
.area lit(rom, con, rel)
L112:
.byte 63,1
.byte 1,1
.byte 1,1
.byte 63,0
.byte 0,4
.byte 2,31
.byte 2,4
.byte 0,0
.byte 0,4
.byte 14,21
.byte 4,4
.byte 4,0
.byte 0,31
.byte 21,14
.byte 4,4
.byte 4,0
.byte 0,31
.byte 21,10
.byte 4,4
.byte 4,0
.byte 0,0
.byte 2,6
.byte 14,30
.byte 30,0
.byte 8,12
.byte 10,9
.byte 10,12
.byte 8,0
.byte 8,12
.byte 14,15
.byte 14,12
.byte 8,0
.area text(rom, con, rel)
.dbfile E:\刻录的\电子技术\项目\驱动程序\LCD1602四线接口应用范例\LCD_1602_Driver.c
.dbfunc e LCD_init_CGRAM _LCD_init_CGRAM fV
; ads -> R20
; CGRAM -> y+0
; y -> R20
; x -> R22
.even
_LCD_init_CGRAM::
rcall push_gset2
sbiw R28,63
sbiw R28,1 ; offset = 64
.dbline -1
.dbline 336
; }
; /*----------------------------------------------------
; LCD_init_CGRAM:初始化CGRAM的函数
;
; 编写日期:2005/10/18
; -----------------------------------------------------*/
; void LCD_init_CGRAM(void)
; {
.dbline 338
; unsigned char CGRAM[8][8]=//CGRAM图案的定义
; { //1 2 3 4 5 6 7 x
ldi R24,<L112
ldi R25,>L112
movw R30,R28
ldi R16,64
ldi R17,0
st -y,R31
st -y,R30
st -y,R25
st -y,R24
rcall asgncblk
.dbline 348
; {0x3F,0x01,0x01,0x01,0x01,0x01,0x3F,0x00},//0
; {0x00,0x04,0x02,0x1F,0x02,0x04,0x00,0x00},//1
; {0x00,0x04,0x0E,0x15,0x04,0x04,0x04,0x00},//2
; {0x00,0x1F,0x15,0x0E,0x04,0x04,0x04,0x00},//3
; {0x00,0x1F,0x15,0x0A,0x04,0x04,0x04,0x00},//4
; {0x00,0x00,0x02,0x06,0x0E,0x1E,0x1E,0x00},//5
; {0x08,0x0C,0x0A,0x09,0x0A,0x0C,0x08,0x00},//6
; {0x08,0x0C,0x0E,0x0F,0x0E,0x0C,0x08,0x00},//7
; };
; unsigned char ads=0x40;
ldi R20,64
.dbline 351
; unsigned char x,y;
;
; LCD_write_char(0,ads);//写地址
mov R18,R20
clr R19
clr R16
clr R17
rcall _LCD_write_char
.dbline 352
; for(y=0;y<8;y++)
clr R20
rjmp L116
L113:
.dbline 353
; {
.dbline 354
; for(x=0;x<8;x++)
clr R22
rjmp L120
L117:
.dbline 355
.dbline 356
ldi R24,8
mul R24,R20
movw R2,R0
movw R24,R28
add R2,R24
adc R3,R25
mov R30,R22
clr R31
add R30,R2
adc R31,R3
ldd R18,z+0
clr R19
ldi R16,1
ldi R17,0
rcall _LCD_write_char
.dbline 357
L118:
.dbline 354
inc R22
L120:
.dbline 354
cpi R22,8
brlo L117
.dbline 358
L114:
.dbline 352
inc R20
L116:
.dbline 352
cpi R20,8
brlo L113
.dbline -2
L111:
adiw R28,63
adiw R28,1 ; offset = 64
rcall pop_gset2
.dbline 0 ; func end
ret
.dbsym r ads 20 c
.dbsym l CGRAM 0 A[64:8:8]c
.dbsym r y 20 c
.dbsym r x 22 c
.dbend
.area bss(ram, con, rel)
.dbfile E:\刻录的\电子技术\项目\驱动程序\LCD1602四线接口应用范例\LCD_1602_Driver.c
_add::
.blkb 1
.dbsym e add _add c
_data::
.blkb 32
.dbsym e data _data A[32:32]c
_lcd_data::
.blkb 32
.dbsym e lcd_data _lcd_data A[32:32]c
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