https://github.com/islandcontroller/arduinoxvc
Xilinx Virtual Cable (XVC) Server implementation for use with an Arduino UNO/Leonardo
https://github.com/islandcontroller/arduinoxvc
arduino jtag xilinx-fpga xilinx-ise xilinx-virtual-cable
Last synced: 8 months ago
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Xilinx Virtual Cable (XVC) Server implementation for use with an Arduino UNO/Leonardo
- Host: GitHub
- URL: https://github.com/islandcontroller/arduinoxvc
- Owner: islandcontroller
- License: apache-2.0
- Created: 2019-12-25T03:28:58.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2020-12-10T10:26:46.000Z (over 5 years ago)
- Last Synced: 2025-04-14T07:39:47.555Z (about 1 year ago)
- Topics: arduino, jtag, xilinx-fpga, xilinx-ise, xilinx-virtual-cable
- Language: C++
- Homepage:
- Size: 139 KB
- Stars: 8
- Watchers: 1
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# ArduinoXVC
[](https://travis-ci.com/islandcontroller/ArduinoXVC)
This project implements a bare-bones Xilinx Virtual Cable server on an Arduino Uno / Leonardo, based on the specification posted in [Xilinx/XilinxVirtualCable](https://github.com/Xilinx/XilinxVirtualCable).
## Hardware
Make sure that the device's JTAG output-high voltage does not exceed the Arduino's maximum input voltage!
Connect your Arduino Uno to the JTAG port of the target device:
| Arduino Pin | JTAG Pin |
|-----------------|----------|
| `2` (OD output) | `TCK` |
| `3` (OD output) | `TMS` |
| `4` (OD output) | `TDI` |
| `5` (input) | `TDO` |
| `GND` | `GND` |
The Arduino's pins are configured as *open drain* outputs to automatically adjust to the target's JTAG I/O voltage. External pull-up resistors aren't required, as Xilinx PLDs provide them internally.
## Software
So far, this project has been tested successfully using **ISE 14.7** and **iMPACT**.
An additional program is required to translate the serial port to a TCP socket, e.g. [pyserial: tcp_serial_redirect](https://github.com/pyserial/pyserial/blob/master/examples/tcp_serial_redirect.py).
1. Start the tcp-to-serial bridge application to serve the Arduino's Serial VCP to `localhost:2542`. Use baudrate `115200` and `8N1` mode.
```
python tcp_serial_redirect -P 2542 COMx 115200
```
2. Open iMPACT and start the *Boundary Scan* flow
3. Open the *Cable Setup* dialog (either via right-click or the *Output* menu)
4. Mark the checkbox under *Cable Plug-In*
5. Enter the following into the combobox below:
```
xilinx_xvc host=127.0.0.1:2542 disableversioncheck=false
```
Set `disableversioncheck` to `false` for iMPACT to parse the `getinfo` version string and maximum packet size.
6. The PLD should now show up and be identified correctly when you run *Initialize Chain*.
### Programming / Readout speed
JTAG transfers are limited to a clock frequency of ~100 kHz, leading to excessive programming times for large FPGA bitfiles.
| Device | File size | Programming time |
|----------|-----------|------------------|
| XC2C64A | 27 kiB | 10 Seconds |
| XC6SLX9 | 333 kiB | 5 Minutes |