MOVfw KEYCOUNT ;
sublw TurnOnDelay ; if reached TurnOnDelay, activate PWRout
btfss status,z
goto cont
bsf PWRout ; activate PWRout for 250ms
call delay_t6
bcf PWRout
goto boot_delay ; and goto boot_delay
no_match
clrf KEYCOUNT ; clear KEYCOUNT
cont
MOVfw RC5_CMD ; copy RC5_CMD to temporary register
MOVwf RC5_CMD_TMP ; for next toggle bit comparison
zero_key ; check if 0 key on remote control is pressed
; at least 44 * 114ms (RC5 code repetition rate) = approx. 5s
MOVfw RC5_CMD ; load RC5_CMD into w
andlw b’01111111’ ; and clear toggle bit
btfss status,z ; does O key (command ’0000000’, any address) match?
goto no_match_1 ;
MOVfw RC5_CMD_TMP_1 ; toggle bit also unchanged?
subwf RC5_CMD,w ;
btfss status,z ;
goto no_match_1 ; - no, has changed
incf KEYCOUNT_1,f ; - yes, unchanged, increment KEYCOUNT_1
MOVfw KEYCOUNT_1 ;
sublw d’44’ ;
btfss status,z ; reached 44 (approx. 5s)?
goto cont_1 ; - no, loop
goto pgm_or_reboot ; - yes, goto pgm_or_reboot
no_match_1
clrf KEYCOUNT_1 ; clear KEYCOUNT_1
cont_1
MOVfw RC5_CMD ; copy RC5_CMD to temporary register
MOVwf RC5_CMD_TMP_1 ; for next toggle bit comparison
goto main_loop
pgm_or_reboot
btfss ATX_C_out
goto pgm_mode ; PC is in standby --> enable program mode
LED_red ; turn LED red to inDICate that reboot has been initialized
MOVlw h’1f’ ; set address to h’1f’
MOVwf RC5_TX_2 ;
MOVlw h’3f’ ; set command to h’3f’
MOVwf RC5_TX_1 ; This combination is not used by the remote control. Suitable
; entries in lircd.conf and lircrc call a reboot script via irexec
call rc5_tx
bsf Reboot_Flag ; set Reboot_flag so that additional delay for green LED flashing
goto boot_delay ; will be added and goto boot_delay
; ------------------------------------------------------------------------------------------------
pwr_sw_1 ; checks if pwr switch of PC is pressed for less or more than
; 5 seconds: if less --> power on/off, if more --> reset
call delay_t4 ; 50ms delay
btfsc PWRin ; still low after 50ms?
goto main_loop ; if not, assume spike and goto main_loop
btfss ATX_C_out ; ATX on or standby?
goto turn_on ; standby, a reset would be quite useless, so turn on VDR
clrf tmr1h ; clear timer1 registers
clrf tmr1l ;
MOVlw d’19’ ; set COUNT to d’19’, this makes approx. 19 * 262ms = 5 seconds
MOVwf COUNT ;
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本文关键字：程序 PIC单片机，单片机-工控设备 - PIC单片机
