M5CoreS3
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"USB Mode" & "USB CDC On Boot" menu options
- add a safeguard to make sure that USBSerial always prints to the connected Serial interface, whatever
USB ModeorUSB CDC On Bootmenu option is selected (see https://github.com/espressif/arduino-esp32/pull/8276). - remove redundant call to USBSerial.begin() in I2C_IMU.cpp and use standard output to print IMU ChipID
I agree with @tobozo
Now use Serial instead of USBSerial. Thank you for your help.