I've been toying with Zephyr a little bit, while adapting it to use the esp-idf master branch, and I'm now at the stage where it fails with: Fatal error: -march=rv32ima_zicsr_zifencei: Invalid or unknown z ISA extension: 'zifencei' And I see the flags -mabi=ilp32 -march=rv32ima_zicsr_zifencei I came...

Okay, so it seems the module already contained everything needed (caps / 10k resistors which coincides with the Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf:8) "SHT31 SHT31-D Temperature & Humidity Sensor Breakout Weather For Arduino https://www.ebay.com/itm/112375172555?hash=item1a2a150dc...

I'm new to espressif and even i2c, so this may be just a "duh" issue... I've got a sensor connected to my C3 and I can get it to work with some pins, but if the only thing I change in the code is the pins, then it may fail with I2C_STATUS_ACK_ERROR . #include "esp_log.h" #include "sensirion-common.h...