Projects developed by XMOS community

A Formal Instruction Set Architecture Definition of the XCore

stevewright — Thu, 29 Sep 2011 10:52:31 +0000

Version Number:

As part of an Engineering and Physical Sciences Research Council and Bristol University Knowledge Transfer Secondment (KTS) (Grant EP/H500316/1), a formal model of the complete XCore ISA was constructed in Event-B formal notation , using the Rodin toolset.

This project applied and extended the Event-B and RODIN based techniques for Instruction Set Architecture (ISA) analysis, developed by Dr Stephen Wright during his doctoral research, to an industrial setting. XMOS Ltd hosted Dr Wright in the period October 2010 to October 2011.

You can find it all at:

Status:

Public release

Licence:

BSD

External Project Website:

http://deploy-eprints.ecs.soton.ac.uk/346/

Images:

Basic I2C driver and application: 16 bit temperature sensor using ADT7410

mjcross — Sun, 11 Sep 2011 16:15:23 +0000

Version Number:

1.01

This project interfaces an XC-1A to an Analog Devices ADT7410 temperature sensor, which has an I2C two-wire serial interface.

Status:

Public release

Licence:

BSD

Latest Build:

thermometer.zip

Images:

Basic Motor Control (Stepper, DC)

richardf — Fri, 26 Aug 2011 10:30:16 +0000

Version Number:

0.1

Examples to provide basic motor control functionality.

Current features include:

Stepper:

Microstepping (Full step to 1/256 microsteps)
Basic current limiting, to allow driving motors at higher than their rated voltage
Current monitoring in motor windings using the ADC

DC Motor:

Velocity ramping
PWM speed control using the sc_pwm component available on github
Quadrature encoder feedback
PID control loop for constant speed control

Bugs are still being fixed and features being added.

Status:

Under development

Licence:

Custom Licence

Custom Licence URL:

https://github.com/xcore/sw_basic_motor_examples/blob/master/LICENSE.txt

Sourceforge/GitHub URL:

https://github.com/xcore/sw_basic_motor_examples

Images:

Runtime Negotiation of Xlinks

Paolomio — Thu, 07 Jul 2011 21:32:36 +0000

Version Number:

Source code to accompany my post "Runtime Negotiation of Xlinks". These routines allow you to configure 2-wire and 5-wire xlinks between devices that don't need to "know" about each other in advance. Such systems are boot-time configurable, allowing communication between devices that may connect via cables or plug-in cards, and thus unknowable in advance. This also illustrates the usage of Static Forwarding mode.

Status:

Public release

Licence:

GPL

Latest Build:

static-forward xlink.zip

Images:

Connect XC-1a to 16x2 alphanumeric LCD display

mjcross — Sun, 03 Jul 2011 21:19:21 +0000

Version Number:

1.01

Use XC ports to talk to a cheap (£8 / $10) 16x2 LCD display via a widely used industry interface.

Developed to use one of the expansion ports on the XC-1a, but should work on most hardware. Uses three one bit ouput ports (control lines) and one eight bit bi-directional port (data bus).
The project comprises: (1) a driver that implements basic API functions to send commands to the device (clear screen, move cursor, etc), write characters and scroll the display (vertically); (2) a simple interconnect board to connect the expansion port to the display via 16 pin header cable.

Status:

Complete

Licence:

BSD

Latest Build:

LCD driver.zip

Images:

occam-pi on XMOS

Goncalo — Fri, 01 Jul 2011 23:37:00 +0000

Version Number:

1.1

In my personal opinion this project is for educational purposes only. It doesn't make sense to use occam-pi on a XMOS platform. However it does make sense to use occam-pi on another single core architecture (Arduinos, PIC, etc...).

The motivation for this project come from this website http://concurrency.cc/ . These folks are making a good job by making available occam-pi to single core architectures. They already have occam-pi runnning on an arduino and on a NXT Brick (Lego Mindstorms).

Status:

Complete

Licence:

GPL

Latest Build:

occamPI_on_XMOS.zip

Images:

Quad XC-1As

tomcarter259 — Fri, 01 Jul 2011 14:43:14 +0000

Version Number:

An example of connecting four XC-1A development boards together via XMOS links. This project includes a detailed walkthrough of how to build the links and then how to boot up the four boards so that the links are established. The example program attempts to communicate over each link in turn, outputting to the terminal and turning on the button LEDs to indicate success.

Status:

Public release

Licence:

MIT

Sourceforge/GitHub URL:

https://github.com/tomcarter259/Quad-XC-1A

Images:

Dual XC-1As

tomcarter259 — Fri, 01 Jul 2011 14:22:30 +0000

Version Number:

An example of connecting two XC-1A development boards together via XMOS links. This project includes a detailed walkthrough of how to build the links and then how to boot up the two boards so that the links are established. The example program attempts to communicate over the links, outputting to the terminal and turning on the button LEDs to indicate success.

This project was adapted from an example of connecting two XMOS XC-1 booads by Martin Young.

Status:

Public release

Licence:

MIT

Sourceforge/GitHub URL:

https://github.com/tomcarter259/Dual-XC-1A

Images:

Three-Servo Robotic Leg

Skeksis — Wed, 22 Jun 2011 21:19:57 +0000

Version Number:

For the time being this is a planned project, the idea is to design a single leg in a modular style meaning you will be able to have as many or as few working together for robot locomotion as you want. I plan to have an XC-1A handle the inverse kinematics processing for each attached leg and pass the calculated values for servo positioning down to slaved micro-controllers which will handle power supply and servo control.

Most of the plans are very up-in-the-air or are down on paper, as I solidify designs and building things I will make those designs available.

Status:

Under development

Licence:

BSD

Images:

LED Matrix POV Hologram

Skeksis — Wed, 22 Jun 2011 21:07:37 +0000

Version Number:

This is currently just an idea, I will be pushing it forward once I have a little more experience with my XC-1A.

The basic idea is to have two LED matrices attached to an axle, timed blinks of RGB LEDs within the matrices will then paint a ghost image similar to other POV displays but with depth, generating what I hope will be a three-dimensional cylindrical hologram with a greater resolution than that of the matrices alone.

Status:

Under development

Licence:

BSD

Images:

MOSDuino - XMOS based Arduino

narutoxela — Thu, 26 May 2011 01:08:38 +0000

Version Number:

0.1

An arduino compatible board based on an XS1-L1 64 pin XMOS chip (and possibly an arduino Mega compatible board based on the XS1-L2!) brigning massive performance gain and muti-thread processing to the Arduino platform. Hardware part almost done, software part will begin as soon I finish the hardware (board).

Status:

Under development

Licence:

Custom Licence

Custom Licence URL:

http://creativecommons.org/licenses/by-sa/3.0/

Images:

Power over Ethernet Speaker

Andy — Tue, 24 May 2011 23:43:53 +0000

Version Number:

The aim of this project was to transport both digital audio and power to a speaker using a single Ethernet cable. Transmitter/Receiver PCBs were designed and software written for the L1 64 pin device.

A lightweight software stack transmits audio from S/PDIF over Ethernet, recovers a clock at the receiver and outputs/amplifies the audio using a digital input Class D amplifier.

This project was submitted as a final year project on the MEng Computer Science & Electronics course at the University of Bristol.

Status:

Complete

Licence:

BSD

Videos:

Images:

XRunner - JTAG Programmer for Altera FPGAs

DSnet — Tue, 24 May 2011 03:02:48 +0000

Version Number:

0.1

Introduction
This project is a modified port of the JRunner JTAG programmer code released by Altera. The original JRunner ran on Windows and used the parallel port to program FPGAs through a bit-banged JTAG protocol. JRunner required a .cdf file (Chain Description File) that held information regarding the target JTAG chain and also referenced one or more .rbf files (Raw Binary File) that were then used to program each FPGA chip.

Status:

Under development

Licence:

BSD

Images:

Multicore Embedded robot

japus — Thu, 12 May 2011 22:30:40 +0000

Version Number:

0.9

The goal is to create a robot that can be controlled using a GUI on a computer. The commands are sent to the robot using a wireless XBEE connection.
The robot itself sends sensor readings such as the distance to objects, temperature, light intensity, driven distance.

Status:

Complete

Licence:

GPL

Latest Build:

RobotController.zip

RobotController.tar

External Project Website:

http://xmos-robot.blogspot.com

Videos:

Images:

L.E.D cube 3D hologram over internet with webcam and 3d software!

xhacktly — Sat, 07 May 2011 07:57:27 +0000

Version Number:

General information;

I am very interested in holograms ;)
and i wanna to make a cheap and easy build, so every one can have a hologram visualization led cube connected to a computer !
This will be possible by using a webcam to record the movement in action(with webcam 3d software), and send the data to the one u are talking with over the web.
So then u can get a 3d hologram inside a led cube moving in realtime!. (i have also been thinking about using many small thin-film screens(connected in a led cube-way circle) instead of L.E.D's but i think i will start with a led cube.

Status:

Just an idea

Licence:

Custom Licence

Images:

Image construction from multiple passes of low resolution sensors

promptcritical — Fri, 22 Apr 2011 05:36:06 +0000

Version Number:

0.1

Basically, and I will flesh this out later, the project seeks to leverage the high speed multicore nature of the Xcore processor to take multiple passes of one or more low resolution sensor to create an higher resolution oversampled image.

Status:

Just an idea

Licence:

BSD

Images:

Simple stepper driver

Interactive_Matter — Tue, 19 Apr 2011 08:37:07 +0000

Version Number:

0.1

As another byproduct by my current project I had to implement a simple stepper controller. The stepper motor itself is controlled ovr SPI via MCP23S08 and a Pololu/Allegro A4983 breakout board - but that is boring.
More interestingly is the implementation of a stepper motor motion control. It is able to go to a position at a given speed.

Next steps are: Isolate & publish the code. Implement correct rammp generation, abstractions for the motor driver, automatic adjustement of the micro stepping.

Status:

Alpha

Licence:

MIT

Images:

3D STEP Models

Bianco — Sun, 17 Apr 2011 07:45:25 +0000

Version Number:

The goal of this project is to provide 3D STEP models which can be used in various EDA tools.
All models are in the AP214 format. The current release contains the following models:

GENERIC MODELS (without silkscreen):

LQFP-64
TQFP-128

PARTS (with silkscreen):

XS1-L01A-LQ64
XS1-L01A-TQ128

CREDITS
Andre l'Herault for letting me redistributing his 3D models.

Status:

Public release

Licence:

BSD

Latest Build:

XMOS_3D_STEP.zip

Images:

Fast Optic Flow Sensor

aleonard — Mon, 11 Apr 2011 18:42:12 +0000

Version Number:

Centeye is a microelectronics firm in Washington DC that specializes in vision chip or visual microsensor technology for a variety of machine vision applications. Our technology allows the implementation of complete machine vision systems sufficiently light for usage on small robotic platforms.

Status:

Public release

Licence:

Custom Licence

Custom Licence URL:

http://creativecommons.org/licenses/by-sa/3.0/

Latest Build:

XMOS Daughter V2.zip

VisionChip_Interface.zip

External Project Website:

http://embeddedeye.com/profiles/blogs/open-source-xmos-daughter

Videos:

Images:

XMOS KiCad Parts

russf — Tue, 05 Apr 2011 20:41:02 +0000

Version Number:

0.1

This project collects, informs, and evangelises the use of KiCad EDA, by providing a growing collection of KiCad parts.

Kicad is a powerful alternative to Eagle, and you can't beat the price. Plenty of layers are supported, and boards can be huge. Quoting from the project page on SourceForge, "The KiCad project is creating a portable, cross-platform, Free/Libre/Open-Source EDA Suite that is capable of schematic and printed circuit board design. The code is licensed under the terms of the GNU GPL. " http://kicad.sourceforge.net/wiki/index.php/Main_Page

Other contributors:

Folknology

Status:

Beta

Licence:

LGPL

Sourceforge/GitHub URL:

https://github.com/topiaruss/xmos_kicad_parts

Images: