ESP8266 Developer Zone The Official ESP8266 Forum 2015-04-14T22:58:57+08:00 https://bbs.espressif.com:443/feed.php?f=6&t=359 2015-04-14T22:58:57+08:00 2015-04-14T22:58:57+08:00 https://bbs.espressif.com:443/viewtopic.php?t=359&p=1323#p1323 <![CDATA[ESP/Xtensa interrupt latency]]>
Is there a way to attach/change the interrupt vector for the peripherals (HSPI in this case) directly and
not using the ETS_SPI_INTR_ATTACH(isr_handler, void *)?

I have some time critical ISR processing and I'm getting around 5uS "practical" latency (approx 400 instructions!!!!).

Is this normal?

regards,
mculibrk

Statistics: Posted by mculibrk — Tue Apr 14, 2015 10:58 pm

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