SPI error while using WiFly shield on Arduino Due

Official Hardware Mega Due
1

Hi, I recently started with Arduino and now I want to add a WiFly shield to the Due.
When trying to run one of the demo applications (SpiUartTerminal) I got an error during the verification.

_Spi.cpp: In member function 'void SpiDevice::_initSpi()':
_Spi.cpp:62: error: 'SPCR' was not declared in this scope
_Spi.cpp:62: error: 'SPE' was not declared in this scope
_Spi.cpp:62: error: 'MSTR' was not declared in this scope
_Spi.cpp:62: error: 'SPR1' was not declared in this scope
_Spi.cpp:62: error: 'SPR0' was not declared in this scope
_Spi.cpp:63: error: 'SPSR' was not declared in this scope
_Spi.cpp:63: error: 'SPI2X' was not declared in this scope
_Spi.cpp: In member function 'byte SpiDevice::transfer(byte)':
_Spi.cpp:104: error: 'SPDR' was not declared in this scope
_Spi.cpp:105: error: 'SPSR' was not declared in this scope
_Spi.cpp:105: error: 'SPIF' was not declared in this scope

I assume it has to do with the fact that I am using the Due.

Any idea how to solve this error?

Thanks in advance,
Henk

2

Almost certainly the Due has completely different register names. I'll move this thread to the Due section.

3

Yes, any code written using AVR-specific register names will not work on the Due, I don't know what "SpiUartTerminal" is but it obviously falls into that category.

Rob

4

This person got it to work...

http://forum.arduino.cc/index.php?topic=155436.0

Is this really all that's needed - just to add one line to the sketch?

5

I got it to work.

Here is what you need to do...

  1. Remove the _SPI.cpp and _SPI.h files from the Wifly library. This will now compile because it will use the Arduino SPI library.

  2. Add this line in setup...
    pinMode(10, OUTPUT);

That's it. I was able to get into command mode and connect to a network and transmit data.