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build
models/vjtag
rtl
urjtag_vjtag
.gitignore
README.md
openocd_config.tcl
vjtag_client_control.tcl
vjtag_led_counter.py

README.md

EP2C5 VJTAG

Experiment to test virtual jtag on EP2C5 development board.

This is nothing more than a port of the virtual jtag tutorial for the DE0-Nano board design for the dirt cheap EP2C5 board that can usually be found on eBay for around $13.

When the design is loaded, one LED is connected to a fixed rate blinker, used as sanity test that all is well. The two other LEDs are connected to bit 0 and bit 6 of a DR shift register instead. There are both on after the bitstream has been loaded.

During execution of the vjtag_led_counter program, one LED will be blinking very quickly, while the other will simply switch from 1 to 0.

Usage

Start virtual JTAG server:

quartus_stp -t vjtag_client_control.tcl

Send command to virtual JTAG server:

python vjtag_led_counter.py