[bug] I²C Scanning fails

[dansiviter]

Hardware

Arduino Nano Matter

Core version

2.0.0, 2.1.0, 2.2.0

Arduino IDE version

2.3.4

Operating system

Windows 11

Radio stack variant

Matter

OpenThread Border Router device (if using Matter)

No response

Issue description

Using typical I²C scanning (e.g. arduino.cc/I2cScanner) does not work. It seems the implementation of #endTransmission(...) assumes SUCCESS in most circumstances which appears incorrect.
This has been tried on multiple boards and using both Wire and Wire1 so assuming the code is at fault.

Serial output

Scanning...
I2C device found at address 0x01  !
I2C device found at address 0x02  !
I2C device found at address 0x03  !
I2C device found at address 0x04  !
I2C device found at address 0x05  !
I2C device found at address 0x06  !
... truncated for brevity ...
I2C device found at address 0x79  !
I2C device found at address 0x7A  !
I2C device found at address 0x7B  !
I2C device found at address 0x7C  !
I2C device found at address 0x7D  !
I2C device found at address 0x7E  !
done

RTT output (if using Matter)

No response

Minimal reproducer code

Use arduino.cc/I2cScanner) example.

[lyusupov]

Duplicates #84

[dansiviter]

Thanks @lyusupov. I'll close in preference to #84.