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StefanBruens / ESP8266_new_pwm

This is a drop-in replacement for the ESP8266 SDK PWM
GNU General Public License v2.0
196 stars 46 forks source link

NMI interrupt source #2

Closed eriksl closed 7 years ago

eriksl commented 8 years ago

http://www.esp8266.com/viewtopic.php?p=52345#p52345

Please use NMI interrupt source, the "normal" source doesn't always work (for me: never).

StefanBruens commented 7 years ago

I have added the option to trigger a level 3, i.e. NMI, interrupt instead of the normal level 1 interrupt.

If this is really useful can be debated, as it will still use the the first free-running timer (FRC1), so you can not use it for anything else. E.g. I have no idea what happens if you attach both the NMI and the standard interrupt to FRC1.

As an alternative, you can use the FRC2, but only via the osdelay..., ostimer... functions.