iamnotdorian / altsourceprobe

Altera JTAG Source/Probe wrapper for Bluespec

AltSourceProbe

This repository contains a wrapper and a set of useful Bluespec modules for dealing with altsource_probe, a megafunction which can be used in hardware designs as a kind of communication bus to talk with a computer in a fashion portable across Altera FPGA devices.

This module is very suitable for debugging hardware designs or for communicating with slow data rates. If you are looking for something similar but capable of achieving higher data rates, please take a look at our AlteraJtagUart module.

See the AltSourceProbe.bsv file for a brief description of the available modules.

The ExampleSimple.bsv file contains a simple example, which controls the DE2_70 board LEDs using JTAG.

The ExampleFIFOs.bsv file contains an example on using the JtagGetPut.bsv library, which can be particularly useful for debugging Bluespec atomic transactions or for transmitting general purpose data (though at slow data rates).

The jtaghttpd.tcl file consists of a simple HTTP server which can be used to talk with Altera JTAG devices in other languages besides TCL. Beware we are not experienced TCL coders. Just run the file using the quartus_stp -t interpreter to start the server. Please look at the comments at the beginning of the file for documentation.

The python directory contains some client code and some examples which can be used to communicate with the JTAG HTTP server using the Python language.