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High priority interrupts

Posted: Mon Apr 27, 2015 2:44 am
by mculibrk
I see mentions of ESP core supporting high priority interrupts (found in RTOS SDK .h files).

I would like to know how to configure them to be able to have a High prio interrupt for SPI (or other peripheral) to avoid the rather long interrupt latency (>1uS ) induced by the "shared ISR" of the level 1 interrupt handler where the ESP_ISR_ATTACH() functions links interrupts related to SPI, GPIO....

Here is the same topic posted in the HDK section:

Any hints greatly appreciated.