| ??? 03/04/10 19:46 Modified: 03/04/10 20:28 Read: times |
#173862 - reading wiegand 26 |
hey im tryin to read wiegand 26 through 8051..using interupts ..
can any1 help me out....heres a little code that reads the first 8 bits and store them to the bit addressable registers and transmit them serially .....i havnt tested the code so don noe if it works or not... if u have a better idea to read the wiegand 26 bit plz lemme noe.. ORG 000H LJMP MAIN ORG 003H LJMP ISR0 ORG 013H LJMP ISR1 MAIN: MOV IE,#10000101B SETB IT0 SETB IT1 JMP $ ISR0: CJNE R0,#7H,SEND ORL 20H,#10000000B MOV A,20H RR A MOV 20H,A INC R0 RET I ISR1: CJNE R0,#7H,SEND ORL 20H,#00000000B MOV A,20H RR A MOV 20H,A INC R0 RET I SEND: MOVE SCON,#52H MOVE TMOD,#20H TH1,#-13 CLR TI MOV SBUF,20H JNB TI,$ dani |
| Topic | Author | Date |
| reading wiegand 26 | 01/01/70 00:00 | |
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