Please update mbed-os to have stdio baud rate configurable

[markus-becker-tridonic-com]

No description provided.

[MarceloSalazar]

@bogdanm

Could you please help to explain how to override the default baud rate for serial port & stdio? Thanks

[bogdanm]

I'm not sure I understand this. Currently, blinky doesn't use the serial port, so why do we need to configure the stdio baud rate for blinky?

[markus-becker-tridonic-com]

True, that it doesn't user serial. But I took it as a starting point for an STM32F4 device. Possibly I should have filed this issue against mbed-os.

So, at the moment there are still hard-coded 9600 in the targets, which then make printf() (not pc.printf() ) not work as expected.

[ciarmcom]

ARM Internal Ref: IOTMORF-332

[sg-]

which then make printf() (not pc.printf() ) not work as expected.

What is expected? 9600 is the default baudrate

[markus-becker-tridonic-com]

If I modify the config.json of this example with core.stdio-serial-baudrate, I would expect it to use that value for pc.printf(), printf() and in other repos ns_trace() right from the beginning. What I have seen is that parts of the output are with 9600 and other parts with the configured value.

[sg-]

Thanks for the clarification. @geky

[markus-becker-tridonic-com]

I think it is mostly this issue: ARMmbed/mbed-os#1969 and the related 9600 occurences: https://github.com/ARMmbed/mbed-os/search?utf8=%E2%9C%93&q=serial_baud%28obj%2C+9600&type=Code

[0xc0170]

@markus-becker-tridonic-com the best would be to move this to mbed-os repo. What's your target device?
we shall clean all of targets.

[markus-becker-tridonic-com]

NUCLEO_F401RE, NUCLEO_F091RC and K64F.

Are you able to transfer this issue. Or shall I re-create?

[0xc0170]

Please recreate, provide a simple code snippet to reproduce. Thanks

[markus-becker-tridonic-com]

Moved to ARMmbed/mbed-os#2396