I've got an 1822 doing basic things just fine, and now I'm trying to get a touch sensor going.
Any fresh eyes that can spot my (maybe obvious?) error?
'-----------------turn off unused registers----------------------------
CM1CON0 = 0 'turn off comparitor 1
CM1CON1 = 0 'configuration of comparitor
MDCON = 0 'turn off data modulator
DACCON0 = 0 'turn off DAC
DACCON1 = 0
ADCON1 = 0 'correct configuration for A-D converter
'------Initialize all the pins--------------------
APFCON0 = %11001111 'alternate pin configs - everything off RA0-RA2
PORTA = 0
LATA = 0
TRISA = 0 'Set them all to outputs to start
ANSELA = 0 'all pins digital to start
ADCON0 = %10000000 'right justify, channel 0, but leave it off
'-------------------set up sensor timers--------------------------
'Use timer 0 as the time base. When it overflows, it gates timer1
options var byte
options = %01100110 '128 seems best
T1CON = %11000001 'bit 0=0 to keep it off
T1GCON = %11010101 'set bit 3 to start the timed count
OPTION_REG = options 'doing it this way for use in multiple places
'-------------------set up touch sensors---------------------------
FVRCON = %11000010
CPSCON0 = %10001101 '(enabled, medium range, clocks timer 0)
CPSCON1 = %00000010 'set pin 7 (CPS2)
ANSELA.2 = 1 'set the corresponding bit
TRISA.2 = 1 'set the corresponding bit
At this point, I expect to see a triangle wave on pin5 (PORTA.2) but the pin goes high and stays there.
Thoughts?
