Help - How to Implement SPI Slave on the Stellaris LaunchPad?

[Rei Vilo 695]

Well, everything is on the title.

I2C slave runs fine on the Stellaris now Tiva C Series LaunchPad but I can't find how to implement SPI slave.

Thank you for your help!

[bluehash 1,581]

Is there an arduino port for this? or are you having trouble with hardware?

[Rei Vilo 695]

The Arduino library doesn't implement slave SPI —see http://arduino.cc/en/Reference/SPI.

 

The recommended trick only works for AVR-based MCUs.

// turn on SPI in slave mode
  SPCR |= _BV(SPE);

Now, the Tiva LaunchPad features the TM4C123GH6PM with TivaWare in ROM.

 

Documentation is so huge (1,414 + 352 pages  ) and I'm more fluent in I²C than in SPI.

 

Using the TivaWare in ROM really makes things easier, as I've experienced with the implementation of clock stretching for I²C.

 

Searching for slave SPI throws more than 100 answers at TI's E2E forum. There's one specific thread about SPI Slave Problem but the solution provided doesn't work for me.

 

Any help greatly appreciated!