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LOGSYS LibUSB driver

This repository contains the Linux-compatible/cross-platform1 driver for the LOGSYS Development Cable.

RC3 is out and available for download!

Features

  • Reading device status
  • Setting VCC, RESET, CLK pins
  • Hotplugging event registration
  • Configuring the FPGA using SVF, XSVF, BIT (needs XILINX) or JED (needs XILINX; untested) files
  • Crude USART support (no tty!)
  • BitBang I/O using the MISO & MOSI pins

Issues

  • No SPI/I2C/PIC support

Dependencies

  • libusb-1.0 (version 0.1 is not supported!)
  • (for building) libusb-1.0-dev
  • [optional] udev (we provide a udev rule to allow an unprivileged user to use the device)
  • [optional, for BIT format support] XILINX ISE, with $XILINX exported

Compiling the driver

For a step-by-step guide, see INSTALLING.md

API

See the include folder & the tests or the Wiki page.

Notes

The driver is in a testing stage. Use with caution! No warranty.

1: The driver works on theoretically any POSIX-compliant OS with LibUSB on it

  • macOS: Driver compiles & works, but lacks BIT format support, due to XILINX not being available.
  • Haiku OS: same state as macOS; also it is available in pre-built HPKG on x86-64bit.
  • Windows MinGW: JTAG library binding does not compile, the rest of the driver seems to work. You need special software to install the SYS file of LibUSB.