solar tracker controller

[muzakyo]

hello
can anyone check my proramming
i am doing the same project.....

solar tracker
pic 16f877
2cds with dc motor

v1 var byte                       'variable v1
v2 var byte                       'variable v2
v3 var byte                    'variable v3


TRISA = 1                       'Set all PORTA pins as inputs
TRISc = 0                     'Set all PORTc pins as outputs

start:

pot porta.0,255,v1             'Read 1st CdS Sensor (east)
pot porta.1,255,v2            'Read 2nd CdS Sensor (west)

if v1 <= 230 then skp        'start program
if v2 > 230 then slp        'is it dark enough to sleep? (sleep mode)

skp:
if v1 = v2 then start        'If equal, do nothing
if v1 > v2 then greater        'If greater, check how much greater
if v1 < v2 then lesser        'If lesser, check how much lesser

greater:                    'Greater routine
v3 = v1 - v2                  'Find the difference
if v3 > 10 then cw             'Is it within range? If not, go to cw
goto start                    'In range do again

lesser:                        'Lesser routine
v3 = v2 - v1                'Find the difference
if v3 > 10 then ccw            'Is it within range? If not, go to ccw
goto start                    'Do again

slp:
low portc.0                       'stopping the solar tracker for moving 
low portc.1                    'stopping the solar tracker for moving
goto start 

cw:                            'Turn the sensor array clockwise
high portc.o                  'Turn on h-bridge
pause 100                     'Let it turn for a moment
goto start                    'Check again

ccw:                         'Turn the sensor array counter clockwise
high portc.1                   'Turn on h-bridge
pause 100                     'Let it turn a moment
goto start                    'Check again

end