SPIspy for Flashkeeper

This is a version of SPIspy for the Flashkeeper SPI Emulator board (FSE).

Setup Instructions

Build and install icesprog and its associated udev rules (see https://github.com/wuxx/icesugar/tree/master/tools/src).

Install the FPGA toolchain dependencies:

sudo apt install nextpnr-ecp5-qt yosys fpga-trellis

To build the SPIspy bitstream:

cd verilog/
make

To flash to your Flashkeeper SPI Emulator, connect a USB-C cable to the second USB-C port (the one on the iCESugar-Pro SoM, not the one on the base board - you may need to release the SoM from its SODIMM slot to do this), then flash the image using icesprog.

cd verilog/
icesprog spispy.bit

Now reinstall the SoM, connect your USB-C cable to the other USB-C port (the one on the baseboard), and confirm you can see an FPGA firmware version:

$ bin/spispy --verbose
Version: '11111111'

Testing

Connect a pico-serprog to the FSE board via the Clip header, as you would connect a chip clip. Then run the test script to write random data into the SPIspy RAM over USB, read it back using the pico-serprog, and confirm it matches.

cd test/
./test.sh