external interrupt in esp32

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kamesh
Posts: 35
Joined: Sat Aug 06, 2016 5:14 am

external interrupt in esp32

Postby kamesh » Sat Dec 17, 2016 1:00 pm

hi,
How to start with external interrupt in esp32? How many external interrupts are there in esp32? pls reply me.


Thanks in advance
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kolban
Posts: 1683
Joined: Mon Nov 16, 2015 4:43 pm
Location: Texas, USA

Re: external interrupt in esp32

Postby kolban » Sat Dec 17, 2016 4:17 pm

I believe that every GPIO pin can on the ESP32 can be configured to indicate a signal level change and notify the application. Since there are > 30 GPIOs on the ESP32 ... that would give you > 30 sources of external detection.
Free book on ESP32 available here: https://leanpub.com/kolban-ESP32
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jumjum123
Posts: 199
Joined: Mon Oct 17, 2016 3:11 pm

Re: external interrupt in esp32

Postby jumjum123 » Sat Dec 17, 2016 4:22 pm

Take a look to esp-idf/components/driver/include/driver/gpio.h
You will find examples there.
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