红外线控制方面的内容（Infrared control）.doc

红外线控制方面的内容（Infrared control） Infrared control How to do infrared remote control reception with PIC? ============================ You can check the remote control waveform by using an oscilloscope to hang on 20106 of the output after you have used the 20106 and the like. ============================= NEC remote control receiver first normal, after not (with remote control subroutine) please. Not only is the field of PIC novice, recently wrote a NEC remote control test program decoding, the remote control decoding part of this program but it can only be judged correctly the first time after not receiving code, please master pointing I know the remote control code bursts, but I have already set up 32 the receiving code counter, there should be no problem I judge 0 (1.125ms) and 1 (2.25ms) because I used C57, can only be determined by the query mode. Through the high level of time (the following procedures for different time 0.9MS) to decide the 0 or 1. Receiving and decoding NEC format subroutine; remote control code; using PORTA 0 infrared remote control receiver in this program, the address code is 00H, high FFH, data code 00H, anti FFH, received are stored in the 25H ADD8L, 26H ADD8H, DAT8 27H, 28H DAT8F register. ; first receives this signal is turned off. ==================================== REMOTE_RECEIVER CLRF; 20H; set the remote control receiving correct flag. If the zeroth bits of 20H are 1, BTFSC, PORTA, 0, remote control receive is invalid. GOTO BACK; judge 9MS low and 4.5MS high. ----5ms delay----------------; MOVLW 06H; 5ms MOVWF 30H to prevent jitter, delay LOOP4 MOVLW 0FFH MOVWF 31H LOOP5 DECFSZ 31H GOTO LOOP5 DECFSZ, 1 30H, 1 GOTO LOOP4 in BTFSC PORTA, 0; GOTO BACK; remote receiving invalid. LOOP0 BTFSS PORTA, 0; remote control receiver, waiting for high level, about 9-5ms GOTO LOOP0; the following is the STEP MOVLW D32will receive the code set; 32 receiving yards. MOVWF BIT32 STEP1 BTFSC PORTA counter, 0; 4.5ms GOTO STEP1 STEP2 BTFSS for PORTA, 0 GOTO