running the gameduino2 library on a different microprocessor

[NeX]

Hi there,

I am trying to port the GD2 library to an AT90CAN128 chip but all i am getting is a white screen. What in the GD2 library is there that might be processor dependent. for example pin 8, how is that defined? by pin number or port?

thanks

[jamesbowman]

First off, just making sure that you are working from the latest driver code:

github.com/jamesbowman/gd2-lib

Given that, the file transports/wiring.h handles the low-level issuing of commands. I would 

 github.com/jamesbowman/gd2-lib/blob/master/transports/wiring.h

A first step might be to add something at line 26, just after the FT800 has booted to print out REG_ID, for example. This would prove that basic SPI communication is running. It should print out "7C" if the FT800 is talking.


digitalWrite(CS, LOW);
SPI.transfer(0x10);
SPI.transfer(0x24);
SPI.transfer(0x00);
SPI.transfer(0x00);
Serial.println(SPI.transfer(0x00), HEX);
digitalWrite(CS, HIGH);


[NeX]

thanks again James for your help

It turns out that i was using the wrong pins. it works now but it is asking to calibrate the touchscreen and i don't have a touchscreen, is there any way to get it to ignore the calibration?

[jamesbowman]

Yes, in GD.begin() do something like:


GD.begin(~GD_CALIBRATE);


which turns off calibration.

[NeX]

perfect! thanks again!