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FreeRTOS for STR73x processor

Posted by henrynguyen1973 on February 27, 2019

Hello,

i am new to FreeRTOS and we have a board used STR73x device. we plan to switch from in-house RTOS to FreeRTOS but i can not find the official support for STR73x, only seen STR75x and STR71x so far. can you please let us know if FreeRTOS for STR75x can be used for STR73x?

Thanks and Best Regards, Henry Nguyen


FreeRTOS for STR73x processor

Posted by rtel on February 27, 2019

I think these are ARM7TDMI devices. Is that right? Most of the ST demos now are for ARM Cortex-M. As I recall you should be able to use the same port layer for the two devices but you need to take care of how the tick interrupt is generated. Unlike on the Cortex-M ports, the ARM7 ports need to generate their tick from a peripheral timer. If the two chips have the same peripheral timers then perhaps you won't need to do anything, otherwise you will need to set up a timer to generate the tick - and use the FreeRTOS tick interrupt handler as the handler for the tick (you can use the existing demo to see how that is done).


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