mastuart.lst

aduc842原程序代码 ad公司芯片应用笔记

00BA C0F0            159            PUSH    B
00BC E4              160            CLR     A
00BD F5F0            161            MOV     B,A
00BF E5F0            162    IO0010: MOV     A,B
00C1 05F0            163            INC     B
00C3 93              164            MOVC    A,@A+DPTR
00C4 6005            165            JZ      IO0020
00C6 1200D0          166            CALL    SENDCHAR
00C9 80F4            167            JMP     IO0010
00CB D0F0            168    IO0020: POP     B
00CD D0E0            169            POP     ACC
                     170    
00CF 22              171            RET
                     172    
                     173    ;____________________________________________________________________
                     174                                                               ; SENDCHAR
MASTUART                                                                                                      PAGE 4

                     175    
00D0                 176    SENDCHAR:       ; sends ASCII value contained in A to UART
                     177    
00D0 3099FD          178            JNB     TI,$            ; wait til present char gone
00D3 C299            179            CLR     TI              ; must clear TI
00D5 F599            180            MOV     SBUF,A
                     181    
00D7 22              182            RET
                     183    
                     184    ;____________________________________________________________________
                     185                                                                ; SENDVAL
                     186    
00D8                 187    SENDVAL:        ; converts the hex value of A into two ASCII chars,
                     188                    ; and then spits these two characters up the UART.
                     189                    ; does not change the value of A.
                     190    
00D8 C0E0            191            PUSH    ACC
00DA C4              192            SWAP    A
00DB 1200EC          193            CALL    HEX2ASCII
00DE 11D0            194            CALL    SENDCHAR        ; send high nibble
00E0 D0E0            195            POP     ACC
00E2 C0E0            196            PUSH    ACC
00E4 1200EC          197            CALL    HEX2ASCII
00E7 11D0            198            CALL    SENDCHAR        ; send low nibble
00E9 D0E0            199            POP     ACC
                     200    
00EB 22              201            RET
                     202    
                     203    
                     204    ;____________________________________________________________________
                     205                                                              ; HEX2ASCII
                     206    
00EC                 207    HEX2ASCII:      ; converts A into the hex character representing the
                     208                    ; value of A's least significant nibble
                     209    
00EC 540F            210            ANL     A,#00Fh
00EE B40A00          211            CJNE    A,#00Ah,$+3
00F1 4002            212            JC      IO0030
00F3 2407            213            ADD     A,#007h
00F5 2430            214    IO0030: ADD     A,#'0'
                     215    
00F7 22              216            RET
                     217    
                     218    ;____________________________________________________________________
                     219                                                                  ; DELAY
                     220    
00F8                 221    DELAY:                                  ; Delays by 10ms * A
                     222                                            ; 100mSec based on 2.097152MHZ 
                     223                                            ; Core Clock 
                     224                                            ; i.e. default ADuC842 Clock
                     225    
00F8 FB              226                    MOV     R3,A            ; Acc holds delay variable
00F9 7C1B            227     DLY0:          MOV     R4,#01Bh        ; Set up delay loop0
00FB 7DFF            228     DLY1:          MOV     R5,#0FFh        ; Set up delay loop1
00FD DDFE            229                    DJNZ    R5,$            ; Dec R2 until R2 is zero
00FF DCFA            230                    DJNZ    R4,DLY1         ; Dec R1 & Jump DLY1 until R1 is 0
0101 DBF6            231                    DJNZ    R3,DLY0         ; Dec R0 & Jump DLY0 until R0 is 0
0103 22              232                    RET                     ; Return from subroutine
MASTUART                                                                                                      PAGE 5

                     233    
                     234    
                     235    
                     236    ;____________________________________________________________________
                     237    
0104 0A0A0D5F        238    TITLE:    DB 10,10,13,'____________________________________',10,13
0108 5F5F5F5F   
010C 5F5F5F5F   
0110 5F5F5F5F   
0114 5F5F5F5F   
0118 5F5F5F5F   
011C 5F5F5F5F   
0120 5F5F5F5F   
0124 5F5F5F5F   
0128 5F5F5F0A   
012C 0D         
012D 416E616C        239              DB 'Analog Devices MicroConverter ADuC842',10,13
0131 6F672044   
0135 65766963   
0139 6573204D   
013D 6963726F   
0141 436F6E76   
0145 65727465   
0149 72204144   
014D 75433834   
0151 320A0D     
0154 20202020        240              DB '      SPI MASTER Demo Routine',10,13
0158 20205350   
015C 49204D41   
0160 53544552   
0164 2044656D   
0168 6F20526F   
016C 7574696E   
0170 650A0D     
0173 20204461        241              DB '  Data Stored in Memory in Hex Form',10,13,0
0177 74612053   
017B 746F7265   
017F 6420696E   
0183 204D656D   
0187 6F727920   
018B 696E2048   
018F 65782046   
0193 6F726D0A   
0197 0D00       
                     242    
                     243    
                     244    
                     245    
                     246    END

VERSION 1.2h ASSEMBLY COMPLETE, 0 ERRORS FOUND
MASTUART                                                                                                      PAGE 6

ACC. . . . . . . . . . . . . . .  D ADDR  00E0H  PREDEFINED  
B. . . . . . . . . . . . . . . .  D ADDR  00F0H  PREDEFINED  
CONT . . . . . . . . . . . . . .  C ADDR  0048H  
DELAY. . . . . . . . . . . . . .  C ADDR  00F8H  
DLY0 . . . . . . . . . . . . . .  C ADDR  00F9H  
DLY1 . . . . . . . . . . . . . .  C ADDR  00FBH  
EA . . . . . . . . . . . . . . .  B ADDR  00AFH  PREDEFINED  
FLAG . . . . . . . . . . . . . .  B ADDR  0000H  
HEX2ASCII. . . . . . . . . . . .  C ADDR  00ECH  
IEIP2. . . . . . . . . . . . . .  D ADDR  00A9H  PREDEFINED  
IO0010 . . . . . . . . . . . . .  C ADDR  00BFH  
IO0020 . . . . . . . . . . . . .  C ADDR  00CBH  
IO0030 . . . . . . . . . . . . .  C ADDR  00F5H  
LED. . . . . . . . . . . . . . .    NUMB  00B4H  
MAIN . . . . . . . . . . . . . .  C ADDR  0060H  
NEXT . . . . . . . . . . . . . .  C ADDR  0098H  
P3 . . . . . . . . . . . . . . .  D ADDR  00B0H  PREDEFINED  
SBUF . . . . . . . . . . . . . .  D ADDR  0099H  PREDEFINED  
SCON . . . . . . . . . . . . . .  D ADDR  0098H  PREDEFINED  
SENDCHAR . . . . . . . . . . . .  C ADDR  00D0H  
SENDSTRING . . . . . . . . . . .  C ADDR  00B8H  
SENDVAL. . . . . . . . . . . . .  C ADDR  00D8H  
SNDUART. . . . . . . . . . . . .  C ADDR  008CH  
SPICON . . . . . . . . . . . . .  D ADDR  00F8H  PREDEFINED  
SPIDAT . . . . . . . . . . . . .  D ADDR  00F7H  PREDEFINED  
T3CON. . . . . . . . . . . . . .  D ADDR  009EH  PREDEFINED  
T3FD . . . . . . . . . . . . . .  D ADDR  009DH  PREDEFINED  
TI . . . . . . . . . . . . . . .  B ADDR  0099H  PREDEFINED  
TITLE. . . . . . . . . . . . . .  C ADDR  0104H  
TRNSMT . . . . . . . . . . . . .  C ADDR  007AH  
WAIT2S . . . . . . . . . . . . .  C ADDR  00B0H