📄 ocm4x8c.lst
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C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 1
C51 COMPILER V7.10, COMPILATION OF MODULE OCM4X8C
OBJECT MODULE PLACED IN .\out\OCM4X8C.obj
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE c\OCM4X8C.c BROWSE INTVECTOR(0XC000) DEBUG OBJECTEXTEND PRINT
-(.\lst\OCM4X8C.lst) OBJECT(.\out\OCM4X8C.obj)
line level source
1
2
3 /***************** version infermation ******************************/
4 //
5 //build on 2004/03/16
6 //2004/04/09 debug draw picture mode.pass.
7 //2004/04/14 update function DrawPicture() and revise CGRAM.
8 //
9 /******************* hardware connection discreption ************************************/
10 //ocm4x8c and with character mold lcd(ST7920) compatible provided
11 //pin1:GND
12 //pin2:VCC
13 //pin3:not connected
14 //pin4:RS(CS) connect to A1
15 //pin5:RW connect to A0
16 //
17 //!!the follow is important ,please vary the address 0x4000 accord to your hardware!!
18 //
19 //pin6:EN=(!A_LCD)&(!(WRn&RDn) ;HARDWARE connect:WRn and RDn is 8031 P3.6,P3.7 respectively;
20 // A_LCD is 74138 output Y2n,also as 8031 address of 0x4000
21 // 74138 input A connect to 8031 P2.7(A15),B to P2.6(A14),C to P2.5(A13)
22 //
23 //pin7:DB0 connect to D0
24 //... ...
25 //pin14:DB7 connect to D7
26 //pin15:connect to vcc,parallel mode
27 //pin16:not used
28 //pin17:RESETn not used
29 //pin18:not connected
30 //pin19:connect to VCC
31 //pin20:connect to GND
32 //
33 //D0-D7 is the data bus,and A0-A15 is the address bus(so you must use a 74373)
34 //
35 /**********************************************************************************/
36 // NOTE: 必须成对使用半角字符，否则将出错 //
37 /**********************************************************************************/
38
39 /****************************函数原型**********************************************
40 void WaitMode(void);
41 void OCM4X8C_initial(void);
42 void IndexShiftLeft(void);
43 void IndexShiftRight(void);
44 void WholeShiftLeft(void);
45 void WholeShiftRight(void);
46 void ClearLine(byte);
47 void WholeShiftLeft_Clear(void);
48 void WholeShiftRight_Clear(void);
49 void WholeShiftLeft_Roll(void);
50 void WholeShiftRight_Roll(void);
51 void SetStartPoisition(byte line,byte x);
52 void DisplayEChar(byte EChar);
53 void DisplayCChar(word CChar);
54 void DisplayString(byte *string);
C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 2
55 void DeleteNumber(void);
56 void DisplayNumber(word number);
57 void DrawPicture(byte *bmpPicture);
58
59 *****************************************************************************/
60
61 #define OCM4X8C //有字库液晶
62
63 #ifdef OCM4X8C
64 #include <absacc.h>
65 //#include <math.h>
66 #include "..\h\OCM4X8C.h"
67
68 bit CheckOdd; //初始值为0，输入偶数个字节为0，奇数个字节为1
69 //byte ShiftLeftNumber=0,ShiftRightNumber=0;
70 char ShiftNumber=0; //正值为右移，负值为左移
71 code byte SelfMadeChar[4][16*2]; //4 16*16 self made characters dot matrix data
72
73
74 bit CheckBusy(void) //返回值为1，说明正忙
75 {
76 1 byte i;
77 1 if((i=XBYTE[OCM4X8C_READ_INSTRUCTION])>=0x80)return(1);
78 1 else return(0);
79 1 }
80 byte ReadAC(void) // AC as the ADDRESS COUNTER
81 {
82 1 return(XBYTE[OCM4X8C_READ_INSTRUCTION]&0x7F);
83 1 }
84
85 //
86 byte OCM4X8C_ReadData(void) //add on 2004/06/30
87 {
88 1 while(CheckBusy());
89 1 return(XBYTE[OCM4X8C_READ_DATA]);
90 1 }
91
92 void OCM4X8C_WriteData(byte data_w) //add on 2004/06/30
93 {
94 1 while(CheckBusy());
95 1 XBYTE[OCM4X8C_WRITE_DATA]=data_w;
96 1 }
97
98 void OCM4X8C_WriteInstruction(byte instr) //add on 2004/06/30
99 {
100 1 while(CheckBusy());
101 1 XBYTE[OCM4X8C_WRITE_INSTRUCTION]=instr;
102 1 }
103 void WaitMode(void)
104 {
105 1 OCM4X8C_WriteInstruction(CLEAR_DISPLAY); //clear all DDRAM(20h),set AC to 00h
106 1 }
107
108 void SetToBasicOperation(void) //基本指令集动作
109 {
110 1 OCM4X8C_WriteInstruction(SET_FUNCTION_BASIC);
111 1 }
112
113 void SetToExtendOperation(void) //扩展指令集动作
114 {
115 1 OCM4X8C_WriteInstruction(SET_FUNCTION_EXTEND);
116 1 }
C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 3
117
118 void OCM4X8C_initial(void)
119 //if you need the index and index position,add this function.
120 //note:after draw a picture,index and index position will be set off.
121 {
122 1 CheckOdd=0; //add on 2004/06/29
123 1 WaitMode();
124 1 SetToBasicOperation();
125 1 OCM4X8C_WriteInstruction(DISPLAY_STATUS+7); //whole display on,index on,index position on
126 1 OCM4X8C_WriteInstruction(SET_ENTRANCE_POINT+2);//index shift right;whole display no move
127 1 }
128
129
130 void IndexShiftLeft(void)
131 //index shift left 16 pixels,but not clear display,it will be replaced by the follow character.
132 {
133 1 OCM4X8C_WriteInstruction(0x10);
134 1 }
135
136 void IndexShiftRight(void)
137 //index shift right as 16 pixels,left a space
138 {
139 1 OCM4X8C_WriteInstruction(0x14);
140 1 }
141
142 void SetCGRAM(byte index)
143 //index should be value in 00h to 03h
144 {
145 1 byte i;
146 1
147 1 OCM4X8C_WriteInstruction(SET_CGRAM+index*0x10);
148 1 for(i=0;i<32;i++)
149 1 {
150 2 OCM4X8C_WriteData(SelfMadeChar[index][i]);
151 2 }
152 1
153 1 }
154
155
156 void SetDDRAM(byte AC) //设置指针AC的位置。
157 {
158 1 OCM4X8C_WriteInstruction(SET_DDRAM+AC);
159 1 }
160
161 void ClearLine(byte line)
162 //清空第line行
163 {
164 1 byte i,AC;
165 1
166 1 AC=ReadAC();
167 1 switch(line)
168 1 {
169 2 case 1:SetDDRAM(0x0);break;
170 2 case 2:SetDDRAM(0x10);break;
171 2 case 3:SetDDRAM(0x8);break;
172 2 case 4:SetDDRAM(0x18);break;
173 2 }
174 1 for(i=0;i<16;i++) OCM4X8C_WriteData(' ');
175 1 SetDDRAM(AC); //设置为原来的指针AC
176 1 }
177
178 void WholeShiftLeft(void)
C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 4
179 //no change in RAM,but need to vary line.
180 {
181 1 OCM4X8C_WriteInstruction(0x18);
182 1 }
183
184 void WholeShiftRight(void)
185 {
186 1 OCM4X8C_WriteInstruction(0x1c);
187 1 }
188
189 void ClearCChar(byte AC) //add on 2004/07/02
190 {
191 1 SetDDRAM(AC);
192 1 OCM4X8C_WriteData(0x20);
193 1 OCM4X8C_WriteData(0x20);
194 1
195 1 }
196 void WholeShiftLeft_Clear(void)
197 {
198 1 ShiftNumber%=8;
199 1
200 1 OCM4X8C_WriteInstruction(DISPLAY_STATUS+4); //whole display on,index off,index position off
201 1
202 1 if(ShiftNumber<=0)
203 1 {
204 2 ClearCChar(-ShiftNumber);
205 2 ClearCChar(0x10-ShiftNumber);
206 2 ClearCChar(0x8-ShiftNumber);
207 2 ClearCChar(0x18-ShiftNumber);
208 2 }
209 1 else
210 1 {
211 2 ClearCChar(0x10-ShiftNumber);
212 2 ClearCChar(0x20-ShiftNumber);
213 2 ClearCChar(0x8-ShiftNumber);
214 2 ClearCChar(0x18-ShiftNumber);
215 2
216 2 }
217 1 ShiftNumber--;
218 1 WholeShiftLeft();
219 1 }
220
221 void Change(byte AC1,byte AC2)
222 //对换行滚动进行校正,add on 2004/07/02
223 {
224 1 byte temp1,temp2,temp3,temp4;
225 1
226 1 SetDDRAM(AC1);
227 1 temp1=OCM4X8C_ReadData(); //预读，必不可少
228 1 temp1=OCM4X8C_ReadData();
229 1 temp2=OCM4X8C_ReadData();
230 1
231 1 SetDDRAM(AC2);
232 1 temp3=OCM4X8C_ReadData();
233 1 temp3=OCM4X8C_ReadData();
234 1 temp4=OCM4X8C_ReadData();
235 1
236 1 SetDDRAM(AC2);
237 1 OCM4X8C_WriteData(temp1);
238 1 OCM4X8C_WriteData(temp2);
239 1
240 1 SetDDRAM(AC1);
C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 5
241 1 OCM4X8C_WriteData(temp3);
242 1 OCM4X8C_WriteData(temp4);
243 1
244 1 }
245
246 void WholeShiftLeft_Roll(void)
247 {
248 1 ShiftNumber%=8; //每行8个汉字，实际为16个，分两行。
249 1
250 1 if(ShiftNumber<=0)
251 1 {
252 2 Change(-ShiftNumber,0x8-ShiftNumber);
253 2 Change(0x10-ShiftNumber,0x18-ShiftNumber);
254 2 }
255 1 else
256 1 {
257 2 Change(0x8-ShiftNumber,0x10-ShiftNumber);
258 2 Change(0x18-ShiftNumber,0x20-ShiftNumber);
259 2 }
260 1 ShiftNumber--;
261 1 WholeShiftLeft();
262 1
263 1 }
264
265 void WholeShiftRight_Clear(void)
266 {
267 1 ShiftNumber%=8;
268 1
269 1 OCM4X8C_WriteInstruction(DISPLAY_STATUS+4); //whole display on,index off,index position off
270 1
271 1 if(ShiftNumber>=0)
272 1 {
273 2 ClearCChar(0x7-ShiftNumber);
274 2 ClearCChar(0x17-ShiftNumber);
275 2 ClearCChar(0xf-ShiftNumber);
276 2 ClearCChar(0x1f-ShiftNumber);
277 2 }
278 1 else
279 1 {
280 2 ClearCChar(0x7-ShiftNumber);
281 2 ClearCChar(0x17-ShiftNumber);
282 2 ClearCChar(-ShiftNumber-1);
283 2 ClearCChar(0x9-ShiftNumber);
284 2 }
285 1
286 1 ShiftNumber++;
287 1 WholeShiftRight();
288 1 }
289
290 void WholeShiftRight_Roll(void)
291 {
292 1 ShiftNumber%=8;
293 1
294 1 if(ShiftNumber>=0)
295 1 {
296 2 Change(0x7-ShiftNumber,0xf-ShiftNumber);
297 2 Change(0x17-ShiftNumber,0x1f-ShiftNumber);
298 2 }
299 1 else
300 1 {
301 2 Change(0x7-ShiftNumber,-ShiftNumber-1);
302 2 Change(0x17-ShiftNumber,0x9-ShiftNumber);
C51 COMPILER V7.10 OCM4X8C 08/29/2005 13:01:17 PAGE 6
303 2 }
304 1
305 1 ShiftNumber++;
306 1 WholeShiftRight();
307 1
308 1 }
309
310
311
312 void BackWhite(byte line) //扩展指令集动作,line=1--4
313 {
314 1 OCM4X8C_WriteInstruction(BACK_WHITE+line-1);
315 1 }
316
317 void DrawOn(void) //扩展指令集动作,绘图显示开
318 {
319 1 OCM4X8C_WriteInstruction(DRAW_ON);
320 1 }
321
322 void DrawOff(void)
323 {
324 1 OCM4X8C_WriteInstruction(DRAW_OFF);
325 1 }
326
327 void DisplayCGRAM(byte index)
328 //display 4 16*16 self define character
329 {
330 1 //index should be valued in 00h to 03h
331 1 OCM4X8C_WriteData(0);
332 1 OCM4X8C_WriteData(2*index);
333 1 }
334
335 void SetStartPoisition(byte line,byte x)
336 {
337 1 extern void DisplayEChar(byte);
338 1 byte line_real;
339 1 if(CheckOdd) DisplayEChar(' '); //add on 2004/06/01
340 1
341 1 switch(line)
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