HardwareSerial::end

[ikkei3]

What is the purpose of delay(10) in HardwareSerial::end()?
Is that a spell? Please remove it.

[SuGlider]

I found that this was inserted in the PR #5047 beacuse of the issue #5043
At this time I also see no purpose for this delay(10).
I'll get it out.

[SuGlider]

This is fixed by #8634

[trickyau]

This revert seems to break HardwareSerial 0 on Seeeduino XIAO ESP32-C3. Downgrading back to 2.0.12 fixes it.

[SuGlider]

@trickyau - Seeeduino XIAO ESP32-C3 board seems to use the HWCDC as default Serial Communication.
When I select the "XIAO_ESP32C3" board it has "USB CDC On Boot: Enabled" by default, indicating that Serial is actually the CDC port, not the HardwareSerial UART port.

I need more details about how the C3 was connected to the UART GPIOs and how to reproduce the issue.
Please open an issue with all the information.