collecting pin states to send across xbee.

RMCanaway

Is it possible to check the pin states (Like a button on each one) from pins 0 to 7, Store it in a temporary value to send across an xbee?

tomcrawford

something like:

VAR      byte    symbol

    symbol := ina[7..0]

pointer to a book

RMCanaway

tomcrawford wrote: »

something like:

VAR      byte    symbol

    symbol := ina[7..0]

pointer to a book

How can I read the values on the xbee receive side?

macrobeak

Download and study the excellent tutorial by Martin Hebel "Getting started with Xbee RF Modules".

RMCanaway

Here's the code i've been working with. Let me know what i can improve on to make it function properly.

tomcrawford

Does it work? If not, what are the symptoms?

RMCanaway

The board I've been designing is a new controller for robotics at my school. it has 8 buttons (0..7 pins) and joysticks (8..11pins) the joysticks work perfectly without any delay. However I have not found a way to send the button data proficiently. I need a way to send the buttons values in packets like earlier mentioned, and to receive them and read each individual button on the receiver.

tomcrawford

Looks like in TANKDRIVECODE you read the buttons only once at the top and send the same value over and over.

RMCanaway

I had just changed that earlier, i had it in the repeat. It still was refusing to work. I'm just getting into .spin, however i have prior experience with LUA, C, and Java

iseries

I did a similar project where it emulated a joy stick or RC transmitter.

joystick rc transmitter using c
I prefer C over SPIN.

Mike

tomcrawford

Well, if the pst.bin is displaying what you expect, then the buttons must be wired correctly. Just make sure both end of the XBee link agree on what a packet looks like...

Edit: My inclination would be to gather all the variables on the tx side and then send them at once. Isolate the gathering from the transmission, so to speak. And I would probably send a checksum, as well. Similarly on the rx side. EndEdit

RMCanaway

On my Robot Controller, I have the button data being sent in 8 bit data packets. I just need to know what button is being pressed on the receive side .



Thanks,
Ryan Canaway