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FreeRTOS ported to the PSoC 4

Former Member

I've ported FreeRTOS to PSoC 4 - which really was extremely trivial. It's simply the Cortex M0 port with some configuration & glue from the PSoC 5 demo.

The attached demo app creates three tasks that toggle the red, green and blue LEDs on the PSoC 4 pioneer board at slightly different rates, resulting in a pleasing (if somewhat psychedelic) light show. Adapting this demo for your own purposes should be straightforward.

Note that because the PSoC Capsense component makes (undocumented) use of the systick timer, it's not currently possible to use FreeRTOS and the PSoC Capsense component together.

Attachments:
FreeRTOSDemo.zip
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  • in reply to Former Member

    Yes, I like to use an RTOS with CapSense. I put the CapSense scanning code in one task and push the results into a queue or a mailbox. Then I can write "application code" that just uses the queue for instructions - it does not have to worry about all the scanning and reading and interpreting finger activity.

    One nice feature of FreeRTOS is the idea of co-routines - these can save you a lot of SRAM because, unlike tasks, they share a stack.

    -- Mark.