On 05/09/2022 15:55, Y. HB wrote:
I see zephyr provided a "Zero-Latency interrupt" facility to do with near bare metal performance interrupt handler, and a talk is about using Zero-Latency Interrupts feature to make a ESC with ZephyRTOS.
A "zero-latency interrupt" in Zephyr is just an interrupt which has a higher priority than the interrupts managed by Zephyr. You cannot use operating system services in such an interrupt.
Is rtems good enough to do the same thing?
For ARMv7-M yes, the lower priority half of interrupt priorities is managed by RTEMS, the higher priority half can be used for such "zero-latency interrupts".
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