external interrupt in esp32

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external interrupt in esp32

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

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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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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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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