📄 dm12864m串行.s
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xcall push_gset2
mov R22,R18
mov R20,R16
.dbline -1
.dbline 139
; }
; }
;
; /*-------------------在指定位置显示一半角字符-----------------------*/
; void LCMDisplayASC(char DisplayCol,char DisplayRow,char ASCCharacter)
; {
.dbline 140
; LCMSetXYAddress(DisplayCol,DisplayRow);
mov R18,R22
mov R16,R20
xcall _LCMSetXYAddress
.dbline 141
; LCMWriteData(ASCCharacter);
ldd R16,y+4
xcall _LCMWriteData
.dbline -2
L29:
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l ASCCharacter 4 c
.dbsym r DisplayRow 22 c
.dbsym r DisplayCol 20 c
.dbend
.dbfunc e LCMDisplayString _LCMDisplayString fV
; LCD_temp -> R20
; DisplayString -> R22,R23
; DisplayRow -> R10
; DisplayCol -> R20
.even
_LCMDisplayString::
xcall push_gset3
mov R10,R18
mov R20,R16
ldd R22,y+6
ldd R23,y+7
.dbline -1
.dbline 146
; }
;
; /*----------------------在指定位置显示字符串-------------------------*/
; void LCMDisplayString(char DisplayCol,char DisplayRow,char *DisplayString)
; {
.dbline 148
; char LCD_temp;
; LCMSetXYAddress(DisplayCol,DisplayRow);
mov R18,R10
mov R16,R20
xcall _LCMSetXYAddress
.dbline 149
; LCD_temp=*DisplayString;
movw R30,R22
ldd R20,z+0
xjmp L32
L31:
.dbline 151
.dbline 152
mov R16,R20
xcall _LCMWriteData
.dbline 153
movw R24,R22
adiw R24,1
movw R22,R24
movw R30,R24
ldd R20,z+0
.dbline 154
L32:
.dbline 150
; while(LCD_temp!=0x00)
tst R20
brne L31
.dbline -2
L30:
xcall pop_gset3
.dbline 0 ; func end
ret
.dbsym r LCD_temp 20 c
.dbsym r DisplayString 22 pc
.dbsym r DisplayRow 10 c
.dbsym r DisplayCol 20 c
.dbend
.dbfunc e LCMDisplayNummber _LCMDisplayNummber fV
; flag -> R20
; LCD_temp -> R22
; DisplayNum -> R10,R11
; DisplayRow -> R14
; DisplayCol -> R12
.even
_LCMDisplayNummber::
xcall push_gset5
mov R14,R18
mov R12,R16
ldd R10,y+10
ldd R11,y+11
.dbline -1
.dbline 161
; {
; LCMWriteData(LCD_temp);
; LCD_temp=*(++DisplayString);
; }
; }
;
; /*-------------------------显示一个整形数字，范围-32767~32767---------------------------*/
; //宏定义判断函数，其中\是连接符
;
; void LCMDisplayNummber(char DisplayCol,char DisplayRow,int DisplayNum)
; {
.dbline 162
; char LCD_temp=0,flag=0;
clr R22
.dbline 162
clr R20
.dbline 163
; LCMSetXYAddress(DisplayCol,DisplayRow);
mov R18,R14
mov R16,R12
xcall _LCMSetXYAddress
.dbline 164
; if(DisplayNum < 0)
movw R24,R10
cpi R24,0
ldi R30,0
cpc R25,R30
brge L35
.dbline 165
; {
.dbline 166
; LCMWriteData(0x2d); //显示负号
ldi R16,45
xcall _LCMWriteData
.dbline 167
; DisplayNum = -DisplayNum;
movw R24,R10
com R24
com R25
subi R24,0xFF
sbci R25,0xFF
movw R10,R24
.dbline 168
; }
L35:
.dbline 169
; LCD_temp=DisplayNum/10000;
ldi R18,10000
ldi R19,39
movw R16,R10
xcall div16s
mov R22,R16
.dbline 170
; if(flag | LCD_temp)
mov R2,R20
or R2,R16
breq L37
.dbline 172
;
; {
.dbline 174
;
; LCMWriteData(0x30 + LCD_temp);
subi R16,208 ; addi 48
xcall _LCMWriteData
.dbline 176
;
; flag = 1;
ldi R20,1
.dbline 178
;
; }
L37:
.dbline 179
; DisplayNum -= LCD_temp*10000;
mov R18,R22
clr R19
ldi R16,10000
ldi R17,39
xcall empy16s
sub R10,R16
sbc R11,R17
.dbline 180
; LCD_temp = DisplayNum/1000;
ldi R18,1000
ldi R19,3
movw R16,R10
xcall div16s
mov R22,R16
.dbline 181
; if(flag | LCD_temp)
mov R2,R20
or R2,R16
breq L39
.dbline 183
;
; {
.dbline 185
;
; LCMWriteData(0x30 + LCD_temp);
subi R16,208 ; addi 48
xcall _LCMWriteData
.dbline 187
;
; flag = 1;
ldi R20,1
.dbline 189
;
; }
L39:
.dbline 190
; DisplayNum -= LCD_temp*1000;
mov R18,R22
clr R19
ldi R16,1000
ldi R17,3
xcall empy16s
sub R10,R16
sbc R11,R17
.dbline 191
; LCD_temp = DisplayNum/100;
ldi R18,100
ldi R19,0
movw R16,R10
xcall div16s
mov R22,R16
.dbline 192
; if(flag | LCD_temp)
mov R2,R20
or R2,R16
breq L41
.dbline 194
;
; {
.dbline 196
;
; LCMWriteData(0x30 + LCD_temp);
subi R16,208 ; addi 48
xcall _LCMWriteData
.dbline 198
;
; flag = 1;
ldi R20,1
.dbline 200
;
; }
L41:
.dbline 201
; DisplayNum -= LCD_temp*100;
ldi R24,100
mul R24,R22
sub R10,R0
sbc R11,R1
.dbline 202
; LCD_temp = DisplayNum/10;
ldi R18,10
ldi R19,0
movw R16,R10
xcall div16s
mov R22,R16
.dbline 203
; if(flag | LCD_temp)
mov R2,R20
or R2,R16
breq L43
.dbline 205
;
; {
.dbline 207
;
; LCMWriteData(0x30 + LCD_temp);
subi R16,208 ; addi 48
xcall _LCMWriteData
.dbline 209
;
; flag = 1;
ldi R20,1
.dbline 211
;
; }
L43:
.dbline 212
; DisplayNum -= LCD_temp*10;
ldi R24,10
mul R24,R22
sub R10,R0
sbc R11,R1
.dbline 213
; LCD_temp = DisplayNum;
mov R22,R10
.dbline 214
; if(flag | LCD_temp)
mov R2,R20
or R2,R10
breq L45
.dbline 216
;
; {
.dbline 218
;
; LCMWriteData(0x30 + LCD_temp);
mov R16,R22
subi R16,208 ; addi 48
xcall _LCMWriteData
.dbline 220
;
; flag = 1;
ldi R20,1
.dbline 222
;
; }
L45:
.dbline 223
tst R20
brne L47
.dbline 223
ldi R16,48
xcall _LCMWriteData
L47:
.dbline -2
L34:
xcall pop_gset5
.dbline 0 ; func end
ret
.dbsym r flag 20 c
.dbsym r LCD_temp 22 c
.dbsym r DisplayNum 10 I
.dbsym r DisplayRow 14 c
.dbsym r DisplayCol 12 c
.dbend
.dbfunc e LCMInit _LCMInit fV
.even
_LCMInit::
.dbline -1
.dbline 232
; if(!flag) LCMWriteData(0x30);
; }
;
;
;
; ////////////////////////////////////////////////////////////////////
;
; /*-----------------------液晶初始化-----------------------------*/
; void LCMInit()
; {
.dbline 233
; LCDDDR_OUT;
in R24,0x1a
ori R24,31
out 0x1a,R24
.dbline 233
.dbline 234
; LCD_PSB;
cbi 0x1b,3
.dbline 235
; LCD_AK;
sbi 0x1b,4
.dbline 236
; LCD_EN_L;
cbi 0x1b,2
.dbline 237
; LCD_RS_L;
cbi 0x1b,0
.dbline 238
; LCD_RW_L;
cbi 0x1b,1
.dbline 240
;
; LCMWriteCommand(0x30);
ldi R16,48
xcall _LCMWriteCommand
.dbline 242
; // 8 bits interface,basic instrument
; LCMWriteCommand(0x0c);
ldi R16,12
xcall _LCMWriteCommand
.dbline 244
; // display,cursor on
; LCMWriteCommand(0x01);
ldi R16,1
xcall _LCMWriteCommand
.dbline 246
; // clear DDRAM
; LCMWriteCommand(0x02);
ldi R16,2
xcall _LCMWriteCommand
.dbline -2
L49:
.dbline 0 ; func end
ret
.dbend
.dbfunc e LCMDelay _LCMDelay fV
; i -> R20,R21
; j -> R22,R23
; k -> R16,R17
.even
_LCMDelay::
xcall push_gset2
.dbline -1
.dbline 254
; // cursor return
;
;
; }
;
; /*----------------------延时子函数---------------------------*/
; void LCMDelay(int k)
; {
.dbline 257
; int i;
; int j;
; for(i=0;i<k;i++)
clr R20
clr R21
xjmp L54
L51:
.dbline 258
; {
.dbline 259
; for(j=0;j<=2000;j++)
clr R22
clr R23
L55:
.dbline 260
.dbline 261
.dbline 262
L56:
.dbline 259
subi R22,255 ; offset = 1
sbci R23,255
.dbline 259
ldi R24,2000
ldi R25,7
cp R24,R22
cpc R25,R23
brge L55
.dbline 263
L52:
.dbline 257
subi R20,255 ; offset = 1
sbci R21,255
L54:
.dbline 257
cp R20,R16
cpc R21,R17
brlt L51
.dbline -2
L50:
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym r i 20 I
.dbsym r j 22 I
.dbsym r k 16 I
.dbend
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