ESP32-S3 deep_sleep with E220

[fabiooo]

I have recently been using ESP32-S3 which communicates with E220.
I noticed that when I put the modem in sleep mode and in deepSleep ESP32, when a message arrives, the MCU wakes up via the AUX pin, I create the E220ttl object and I go to read the buffer but it doesn’t find anything.

It seems that when I create the object the buffer of HardwareSerial1 (the one I use) is cleared.

Is there a better way to wake up ESP32 and read the message that has arrived?

Have you done any driving? I did not find her

Thank you

[Renzo Mischianti]

Hi Fabiooo,
the problem of deep sleep was explained here, to be sure to read the message you must use light sleep.
The power-consuming difference isn’t so big, so It’s preferable.
Bye Renzo

[Author]

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