ESP32 Forum

Is there a good way to abort an asynchronous I2C operation?

Am I allowed to 'i2c_master_bus_rm_device' a device for which an asynchronous operation is currently in process? Would/should it get aborted?

Can I shut down the whole bus ('i2c_del_master_bus') if an operation is still in process?

ESP-IDF does not provide a direct API to abort an in-progress asynchronous I²C operation. If you are using i2c_master_cmd_begin(), set a short timeout so that operations do not block indefinitely. You can manually reset the I²C bus by reinitializing it if you detect an operation getting stuck.