NRF2410无线通讯模块原理IC解密
- IC解密DQ BIT P3.7 ;
- swpH equ 0d2H
- swpL equ 0ffH
- WDLSB DATA 30H ;
- WDMSB DATA 31H ;
- ;***************************************************************
- ORG 0000H
- LJMP MAIN
- ORG 000BH
- LJMP TMR0 ; Timer0 isr
- ;********************************************************
- TMR0: MOV TH0,#swpH
- MOV TL0,#swpL
- JB 21H,DSL
- MOV P0,42H
- ORL P0,#00100000B
- SJMP EXIT
- DSL:
- MOV P0,43H
- ORL P0,#00010000B
- EXIT:
- CPL 21H
- RETI
- ; 主程序
- MAIN:
- TOINIT:
- CLR EA
- MOV TMOD,#01H
- MOV TH0,#swpH
- MOV TL0,#swpL
- SETB EA
- SETB ET0
- SETB TR0
- ;***********************************************************
- ;
- MOV R2,#2
- MOV R0,#42H ;
- OVER:
- MOV @R0,#00H;
- INC R0
- DJNZ R2,OVER
-
- LOOP:
- LCALL DSWD ;
- SJMP LOOP
- ;**********************************************************
- ; 从 DS18B20读取温度
- DSWD:
- LCALL RSTSNR
- JNB F0,KEND
- MOV R0,#0CCH
- LCALL SEND_BYTE
- MOV R0,#44H
- LCALL SEND_BYTE
- SETB EA
- MOV 48H,#1
- SS2:
- MOV 49H,#255
- SS1:
- MOV 4AH,#255
- SS0:
- DJNZ 4AH,SS0
- DJNZ 49H,SS1
- DJNZ 48H,SS2
- CLR EA
- LCALL RSTSNR
- JNB F0,KEND
- MOV R0,#0CCH
- LCALL SEND_BYTE
- MOV R0,#0BEH
- LCALL SEND_BYTE
- LCALL READ_BYTE
- MOV WDLSB,A
- LCALL READ_BYTE
- MOV WDMSB,A
- LCALL TRANS12
- KEND:
- SETB EA
- RET
- ;**********************************************************
- ;
- TRANS12:
- MOV A,30H
- ANL A,#0F0H
- MOV 3AH,A
- MOV A,31H
- ANL A,#0FH
- ORL A,3AH
- SWAP A
- MOV B,#10
- DIV AB
- ;MOV 42H,A
- MOV 43H,B ;
- MOV b,#10
- DIV ab
- MOV 42H,B
- MOV 41H,A
- RET
- ;*************************************************
芯片解密
