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by sndrdata
Tue Jul 08, 2025 9:17 am
Forum: ESP-IDF
Topic: ESP32S3 RTC-I2C (I2C Ulp periph)
Replies: 1
Views: 143

ESP32S3 RTC-I2C (I2C Ulp periph)

Hi,

I'm working with an ESP32S3 and an ST25R3916 NFC reader, and trying to get the NFC reader to work with the RTC-I2C peripheral.

RTC-I2C peripheral has a hardware bug with required subregisters that I'm trying to work around. To get ST25 "direct commands" (single byte writes) to work I set those ...

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