portc

[HAZELEB]

Hi,
How do I assign a variable to a portc pin
b0 = portc pin0 gives a syntax error in this line, any help appreciated

Ted.

 

[testerrrs]

if portc pin0 = 1 then
let b0 = 1
else
let b0 = 0
endif

Jon

 

[HAZELEB]

Hi, what I want is to preload portc pin0 into a variable to serout to xbee
It works for b3 = pin but not for b3 = portc pin why.


#picaxe40x1
init:
high 7
pause 100
main:
readadc 0,b0
readtemp 1,b1
b2 = pin2
b3 = pin6
b4 = portc pin0
serout 7,t2400, ($55,$55,b0,b1,b2,b3,b4)
pause 1000
goto main

 

[hippy]

"b3 = portc pin" isn't supported by the PICAXE language, but you should be able to achieve "b0 = portc pins" using "Peek $07,b0".

That will put the entire input port into b0, individual bits of b0 can then be referenced using the bit0 to bit7 variables ...

Do
  Peek $7,b0
  SerTxd("PortC Input = %",#bit7,#bit6,#bit5,#bit4,#bit3,#bit2,#bit1,#bit0," ",#b0,CR,LF)
  Pause 500
Loop

To perform the "b4 = portc pin0" you're after you can do that with bit masking ...

- Peek $07,b4 : b4 = b4 & %00000001

To get at other bits is a bit more complicated, this would achieve "b4 = portc pin1" ...

- Peek $07,b4 : b4 = b4 & %00000010 MAX 1

 

[HAZELEB]

Thanks Hippy, & Jon