Solution to syntax errors in code

[mpardinho]

i use this code but then i compile occurs some errors
i help me with erros


DataPin equ 0x06 ;PIC Pin
ClockPin equ 0x07 ;PIC Pin
Char equ 0x35 ;buffer
BitCounter equ 0x36 ;number of bits to read

GetScanCode
bsf STATUS, RP0 ;select bank 1
bsf TRISB, DataPin ;set pins as input
bsf TRISB, ClockPin
bcf OPTION_REG, NOT_RBPU ;pull-ups are enabled
bcf STATUS, RP0 ;select bank 0

call ClockWait ;wait for Pull up to take effect and keyboard to pull clock low

;--- Read Data Bits ----

ReadKey
clrf Char ERROR
movlw .8 ;bits to read
movwf BitCounter

ReadChar
rrf Char ERROR
bcf Char, 7 ;default value is 0
call ClockWait ;wait for clock to go high then low

btfss PORTB, DataPin ;read Data
goto Next ERROR
bsf Char, 7 ;Data is High ERROR
Next decfsz BitCounter
goto ReadChar ;read next Data Bit


call ClockWait ;Parity Bit

call ClockWait ;Stop Bit

;Pull Clock Line Low (keyboard will buffer any further keystrokes)

bsf STATUS, RP0 ;select bank 1
bcf TRISB, ClockPin ;set clock line as output
bcf STATUS, RP0 ;select bank 0
bcf PORTB, ClockPin ;set clock line low


movf Char, W
return

ClockWait
;wait for clock to go high
btfss PORTB, ClockPin
goto ClockWait

ClockWait2
;wait for clock to go low
btfsc PORTB, ClockPin
goto ClockWait2

return ERROR

 

[newelltech]

Re: Error in code

What compile errors are you getting?

 

[VSMVDD]

Re: Error in code

bcf OPTION_REG, NOT_RBPU ;pull-ups are enabled << is the text right for the task you need

pullups NOT enabled maybe 1 issue




goto next ERROR is wrong for a start

you cant goto something that is returned
if you goto it it must be a structured function it calls

goto next >???? is this a command ???


something thats returned has a value so is a variable
and must be declaired

like BYTE ERROR etc