The XMOS Startkit is a development board for the (or one variant of the) XMOS multicore processor. It has two tiles, each with 8 32-bit cores giving a total of 500 MIPS. It has some very nice features such as the ability to set output ports at a specific and very precise time, and similarly to timestamp its input. The Startkit has the CPU, some LEDs and touch sensors and lots of connectors. There's a nice development studio which runs on the major platforms and connects to the board over USB. Amazingly, these board cost on $15 from Digikey in the US and can be bought for something similar in the UK. I got hold of one recently, with a plan to continue some of the DAC work I reported a few weeks back. However, as a first step I connected up a simple LED and made it flash with a variant of a program from the XMOS tutorials. It's wired up like this:
- 0V from the J6 connector on the board to the cathode (short leg) of a small red LED.
- Pin 1 of connector J7 to a 1k resistor.
- The other end of the resistor to the anode (long led) of the LED.
A lower resistor would make the LED brighter, but I didn't want to risk drawing too much current. The pin operates at 3.3V.
This is, of course, not super interesting. The main point I wanted to check is whether I could drive a LED directly.