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.