24c02-p0-p2-led.lst

将演示数据先写入24C04芯片内

00AB D2B5            136            SETB  SDA         ;释放SDA数据线
00AD DFED            137            DJNZ R7,R_BYTE    ;判断8位数据是否接收完全？
00AF 22              138            RET
                     139     ;----------------------------------------------------
                     140     ;向IIC总线发送一个字节数据
                     141     ;入口参数：A---待发送数据存放在A中
                     142     ;----------------------------------------------------
00B0                 143     SENDBYTE:
00B0 7F08            144            MOV R7,#08
00B2                 145     S_BYTE:
00B2 33              146            RLC A
00B3 92B5            147            MOV SDA,C
00B5 D2B4            148            SETB SCL
00B7 00              149            NOP
00B8 00              150            NOP
00B9 00              151            NOP
00BA 00              152            NOP
00BB C2B4            153            CLR SCL
00BD DFF3            154            DJNZ R7,S_BYTE   ;8位发送完毕?
00BF 22              155            RET
                     156     ;-----------------------------------------------------
                     157     ;等待应答信号
                     158     ;等待从机返回一个响应信号
                     159     ;-----------------------------------------------------
00C0                 160     WAITACK:
00C0 C2B4            161            CLR  SCL
00C2 D2B5            162            SETB SDA       ;释放SDA信号线
00C4 00              163            NOP
00C5 00              164            NOP
00C6 D2B4            165            SETB SCL
00C8 00              166            NOP
00C9 00              167            NOP
00CA 00              168            NOP
00CB A2B5            169            MOV C,SDA
00CD 40F1            170            JC  WAITACK    ;SDA为低电平，返回了响应信号
00CF C2B5            171            CLR  SDA
00D1 C2B4            172            CLR  SCL
00D3 22              173            RET
                     174      ;----------------------------------------------------
                     175      ;启动信号子程序
                     176      ;----------------------------------------------------
00D4                 177     START:
00D4 D2B5            178            SETB SDA
00D6 D2B4            179            SETB SCL
00D8 00              180            NOP
00D9 C2B5            181            CLR SDA
00DB 00              182            NOP
00DC 00              183            NOP
00DD 00              184            NOP
00DE 00              185            NOP
00DF C2B4            186            CLR SCL
00E1 22              187            RET
                     188      ;----------------------------------------------------
                     189      ;停止信号子程序
                     190      ;----------------------------------------------------
A51 MACRO ASSEMBLER  24C02_P0_P2_LED                                                      12/20/2006 21:20:46 PAGE     4

00E2                 191     STOP:
00E2 C2B5            192            CLR SDA
00E4 00              193            NOP
00E5 D2B4            194            SETB SCL
00E7 00              195            NOP
00E8 00              196            NOP
00E9 00              197            NOP
00EA 00              198            NOP
00EB D2B5            199            SETB SDA
00ED 00              200            NOP
00EE 00              201            NOP
00EF C2B4            202            CLR  SCL
00F1 C2B5            203            CLR  SDA
00F3 22              204            RET
                     205      ;----------------------------------------------------
                     206      ;延时5MS子程序
                     207      ;输入参数：R4---R4*5MS
                     208      ;输出参数: 无
                     209      ;影响资源: R4,R5,R6等
                     210      ;----------------------------------------------------
00F4                 211     DELAY_5MS:
00F4 7E0A            212           MOV R6,#10
00F6                 213     DE_LP:
00F6 7DFA            214           MOV R5,#250
00F8 DDFE            215           DJNZ R5,$
00FA DEFA            216           DJNZ R6,DE_LP
00FC DCF6            217           DJNZ R4,DELAY_5MS
00FE 22              218           RET
                     219      ;----------------------------------------------------
00FF                 220     TAB:
00FF FEFDFBF7        221          DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FH
0103 EFDFBF7F                
0107 BFDFEFF7        222          DB 0BFH,0DFH,0EFH,0F7H,0FBH,0FDH,0FEH,0FFH
010B FBFDFEFF                
010F FEFCF8F0        223          DB 0FEH,0FCH,0F8H,0F0H,0E0H,0C0H,080H,000H
0113 E0C08000                
0117 80C0E0F0        224          DB 080H,0C0H,0E0H,0F0H,0F8H,0FCH,0FEH,0FFH
011B F8FCFEFF                
011F FCF9F3E7        225          DB 0FCH,0F9H,0F3H,0E7H,0CFH,09FH,03FH
0123 CF9F3F                  
0126 9FCFE7F3        226          DB 09FH,0CFH,0E7H,0F3H,0F9H,0FCH,0FFH
012A F9FCFF                  
012D E7DBBD7E        227          DB 0E7H,0DBH,0BDH,07EH,0BDH,0DBH,0E7H,0FFH
0131 BDDBE7FF                
0135 E7C38100        228          DB 0E7H,0C3H,081H,000H,081H,0C3H,0E7H,0FFH
0139 81C3E7FF                
013D AA5518FF        229          DB 0AAH,055H,018H,0FFH,0F0H,00FH
0141 F00F                    
0143 00FF00FF        230          DB 000H,0FFH,000H,0FFH
                     231     ;-----------------------------------------------------
                     232           END
A51 MACRO ASSEMBLER  24C02_P0_P2_LED                                                      12/20/2006 21:20:46 PAGE     5

SYMBOL TABLE LISTING
------ ----- -------


N A M E             T Y P E  V A L U E   ATTRIBUTES

B. . . . . . . . .  D ADDR   00F0H   A   
DELAY_5MS. . . . .  C ADDR   00F4H   A   
DE_LP. . . . . . .  C ADDR   00F6H   A   
MAIN . . . . . . .  C ADDR   0030H   A   
M_LOOP . . . . . .  C ADDR   0038H   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
RCVBYTE. . . . . .  C ADDR   0097H   A   
READ_BYTE. . . . .  C ADDR   007FH   A   
READ_DATA. . . . .  C ADDR   004FH   A   
RE_LOOP. . . . . .  C ADDR   0053H   A   
R_BYTE . . . . . .  C ADDR   009CH   A   
SCL. . . . . . . .  B ADDR   00B0H.4 A   
SDA. . . . . . . .  B ADDR   00B0H.5 A   
SENDBYTE . . . . .  C ADDR   00B0H   A   
SP . . . . . . . .  D ADDR   0081H   A   
START. . . . . . .  C ADDR   00D4H   A   
STOP . . . . . . .  C ADDR   00E2H   A   
S_BYTE . . . . . .  C ADDR   00B2H   A   
TAB. . . . . . . .  C ADDR   00FFH   A   
WAITACK. . . . . .  C ADDR   00C0H   A   
WRITE_BYTE . . . .  C ADDR   0065H   A   
WRITE_DATA . . . .  C ADDR   003CH   A   
WR_LOOP. . . . . .  C ADDR   0043H   A   


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)