Very essential tool for iCE40 FPGAs SRAM bitstream programming using bare bones FTDI C232HM MPSSE cable. Does not support (yet) serial flash programming.
Tested on Ubuntu 16.04.2 and Cygwin with UPDuino and Go Board boards
http://gnarlygrey.atspace.cc/development-platform.html#upduino
Upduino board pinout
| Signal | FTDI cable color | UPDuino |
|---|---|---|
| CLK | Orange | JP2-3 |
| MOSI | Yellow | JP2-1 |
| CS | White | JP2-5 |
| RESET | Blue | JP1-2 |
| Vdd | Red | JP2-2 |
| GND | Black | JP2-6 |
Leave J1 unpopulated. A blinky LED bitstream example is provided for testing purposes on UPDuino board.
Go Board can only work with the bitbanged version of the tool as MISO and MOSI signals are configured for iCE40 master mode (i.e.: loads bitstream from external serial flash).
Prerequisites: libftdi1. On Cygwin use Zadig to install WinUSB driver over first USB/Serial converter (Interface 0). On Linux, copy (as root) the contents of udev-rules directory into /etc/udev/rules.d/ if willing to use MPSSE cable as non-root user.
libmpsse essential sources are embedded in the project for convenience as there's no Debian package for it yet.