Not able to identify the error in the code

[jainamaster14]

Can anyone help to find the error in the code because it is not able to print anything on the console. I have also try to change the pins of UART but then also it is not be to print anything on the console. 

[Andrew Neil]

You need to provide a lot more details!

What "console" are you talking about?

What board are you running on?

How is that board connected to the "console"?

etc, etc - see:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

 

Start with a minimal example which just sends a fixed message

sending continuous uppercase 'U' is good - as you can then easily check that on a 'scope, see if the baud rate is correct, etc 

Then try receiving, and doing a simple loop-back ...

 

[Tesla DeLorean]

Understand we are not psychic here..

Is this the STM32F411RE you've mention in a prior post? Is it on a NUCLEO-F411RE board?

Check the MSP code initializing the USART2 clocks, and GPIO pins.

The baud rate must match those of the ST-LINK VCP/CDC connection, if that's what you're attempting to use.

Send some data directly via HAL_UART_Transmit(), then check the plumbing for the __io_putchar() for printf() to work.