Photon Test Breakout Board

[rocksetta]

@rickkas7

The example in this post does 8 byte transfers, but you can simply make the data buffer smaller and it will transfer fewer bytes.

Thanks Rick. Very happy. Got my SPI both master and slave working really well.

I posted my code at

Connecting 2 Photon via SPI

It took a lot of work to get this going. Here is my working code with the help of @rickkas7 The github is at https://github.com/hpssjellis/particle-photon-testing-circuit/tree/master/individual-serial The 2 Photon SPI Serial breadboard:[image] The SPI Master // SPI-Master.ino // By Jeremy Ellis // MIT license // Use at your own risk! const unsigned long SEND_PERIOD_MS = 10000; const int SS_PIN = A2; const size_t NUM_VALUES = 32; unsigned long lastSend = 0; uint32_t rcvdValues[N…