Special Function Variables question.

[@lowa]

Is it possible to retreeve the output pins status and store it into a variable by peeking the Special Function Variables area on a 20M?

also is it there an easy way to swap bit 0 with bit 7, bit 1 with bit 6, bit 2 with bit 5, and bit 3 with b4 on the 20M.

Thanks for your replies!

 

[hippy]

READOUTPUTS is the command you want to determine what is currently being output.

To swap bits on a 20M, as there's no REV operator, the best way to reverse bits is to use b1 as a temporary variable ...

b0 = %11001010
bit8 = bit7
bit9 = bit6
bit10 = bit5
bit11 = bit4
bit12 = bit3
bit13 = bit2
bit14 = bit1
bit15 = bit0
b0 = b1

b0 will then hold %01010011

That can be modified to move various bits and not swap others.

 

[@lowa]

Thanks a lot for your fast reply Hippy, it does the job!

 

[@lowa]

One more question, what is the x2 equivalent for readoutputs and what is the right syntax

 

[BeanieBots]

Basic manual 2 page 151.
"let var = outpins"

 

[@lowa]

hi Beaniebot
Basic manual 2 page 151 is the READOUTPUTS command that works with the A,M,X and X1 serie but not with the X2.
let b0 = outpins is giving a syntax error in the programming editor in X2 mode so my question is what is the X2 equivalent for readoutputs and what is the right syntax.
thanks

 

[Technical]

let b0 = outpins?

where ? is the port in question e.g for portB

let b0 = outpinsB