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Topic: Sppoky eyes on Cortex M4 and RTOS! (Read 884 times) previous topic - next topic

Sppoky eyes on Cortex M4 and RTOS!

Hi,

ARM M series MCUs are poping up from almost every vendor.  To see what these guys could do, we've run a simple experiment how difficult would be to configure FreeRTOS to run spooky eyes.  Instructables project http://www.instructables.com/id/Super-Spooky-Evil-Eyes-of-Doom-Using-atTiny85-and-/  was an inspiration for the "mechanical part".

Build environment:
Stellaris launchpad LM4F120H5QR
Code Composer Studio 5.2
Ubuntu 12.04
TI C compiler
FreeRTOS

How does it work:
RTOS runs few led tasks
Led task uses rand function from stdlib to generate random on / off events
Built in PWM controller is responsible for dimming the leds

Impression:
We are not coming back to 8 or 16bit cpus (unless for power reasons). M4 is FAST

Code and few pics are attached

Toxic239