README.md

Chisel Test

A simple project for myself to learn Chisel and FPGA.

Supports TinyFPGA BX and OrangeCrab boards.

Build tool are required separately.

• sbt
• yosys
• icestorm (for TinyFPGA BX, iCE40)
• prjtrellis (for OrangeCrab, ECP5)
• nextpnr
• tinyprog (for TinyFPGA BX)
• dfu-util (for OrangeCrab)
• verilator (for unit tests)

Usage

To build a bitstream for a specific top module, simply make with TOP_MODULE. Where BOARD can be tinyfpgabx or orangecrab.

make BOARD=... TOP_MODULE=...

For TinyFPGA BX, to program bitstream, connect device to USB then use prog task.

make BOARD=tinyfpgabx TOP_MODULE=... prog

For OrangeCrab, to dfu bitstream, connect device to USB, then use dfu task.

make BOARD=orangecrab TOP_MODULE=... dfu