Winzig is a programmable logic module designed to be plugged into a solderless breadboard.

This repo contains schematics, pinouts and example gateware.

Find more information on the Winzig product page.

There are currently two ways to program Winzig:

1. Remove the MMOD flash module, connect the Winzig MMOD socket to a device supported by ldprog and program the configuration SRAM. This is useful for development.
2. Remove the MMOD flash module and program it with a GPIO or SPI-capable device. This is useful when you want the gateware to persist without power.

Building the blinky example requires Yosys, nextpnr-ice40 and IceStorm.

Assuming they are installed, you can simply type make to build the gateware, which will be written to output/blinky.bin. You can then use ldprog to write the gateware to the device.

Connect the MMOD socket to the appropriate pins of an ldprog-supported device.

You will need to use the manual reset option (-m) with ldprog and press the Winzig reset button when prompted to do so. Alternatively, you can solder a wire to the CRESET pad on the back of Winzig to automate this step.

$ ldprog -m -s output/blinky.bin

It should be possible to connect and program the MMOD using any device capable of GPIO. If using a Müsli or Raspberry Pi [Pico] you can use the ldprog tool:

$ ldprog -f output/blinky.bin

The MMOD socket can be used to program the FPGA SRAM or can be populated with an MMOD containing a bitstream.