Looking for a free RTOS for PIC micros

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atferrari

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RTOS for PICmicros

I am really interested in writing or just using a freely available RTOS for PICmicros but not in C (a know almost nothing about C). I work always in assembler.

Other than what is wirten in AN585 from Microchip I couldn't find anything complete making sense.

Could anyone point in the right direction?

Gracias

Agustín Tomás
 

Re: RTOS for PICmicros

For build your RTOS, you have to:
1 - Make a Hardware interrupt with timer every 10 to 30 ms
2 - On Interrupt, save your contexts (registers and pointers to return, CCR, etc)
2.1 - If you want a preemptive kernel, then you have to execute the thread inside.
2.1 - If you want a non preemptive kernel, then finish the interrupt.
3 - Restore the context
4 - On return, then your program have to return to the next thread
5 - And so on.

I think that can help.
 

Re: RTOS for PICmicros

hi
Good.

for PIC microcontrollers if want to make your RTOS premptive select the PIC18 architecture because the Stack is editable.

Hope u follow the thing

regards
Gopi
 

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