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by tangkdt
Tue Jun 30, 2026 7:06 pm
Forum: ESP-IDF
Topic: I2C Slave Address Match Wakeup
Replies: 0
Views: 77

I2C Slave Address Match Wakeup

Hi, I was wondering if it is possible to do I2C slave address match wake-up from light-sleep as I do not see any existing API for this for the ESP32-S3.

I think there may be a workaround using GPIO pins to detect the low on the SDA line on a Start Condition. However, I am using GPIO 42 for SDA ...

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