Thanks Horace. That is useful information. I've also found this
https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/peripherals/i2c.html
It'll take me a while to absorb it all, but it explains i2c_master.h, and how to create instances of
i2c_master_bus_handle_t That seems to ...
Search found 2 matches
- Thu Jul 30, 2026 12:58 am
- Forum: ESP32 Arduino
- Topic: Trouble with I2C on ESP32C3
- Replies: 2
- Views: 27
- Tue Jul 28, 2026 11:33 pm
- Forum: ESP32 Arduino
- Topic: Trouble with I2C on ESP32C3
- Replies: 2
- Views: 27
Trouble with I2C on ESP32C3
Hi.
I have a Waveshare ESP32-C3-LCD-1.47 development board. It includes a QMI8658 IMU. I know the IMU works because the board shipped with a demonstration program (no source code) that showed as much. But my efforts to access the IMU have failed. It seems the simplest I2C operations result in error ...
I have a Waveshare ESP32-C3-LCD-1.47 development board. It includes a QMI8658 IMU. I know the IMU works because the board shipped with a demonstration program (no source code) that showed as much. But my efforts to access the IMU have failed. It seems the simplest I2C operations result in error ...