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CCS/MSP430F425A: MSP430F425A UART module

Mengling Wang
Prodigy 30 points
Part Number: MSP430F425A

Tool/software: Code Composer Studio

Hi,

I am working at testing MSP430F425A chip. I have issues in testing UART Mode. I use LFXTCLK(32768Hz) as the external clock, and choose ACLK  to calculate the baud rate. 

I support to continuous output numbers from 0 to 9 to the PC though UART serial communication.  The result shows that PC receive most of the data, but not every data, like 234093456.

Dose anyone have any idea about this situation?

Thank you so much!

Alice

  • 0
    TI__Guru**** 217307 points
    Hi Alice,

    Please refer to TI code examples fet410_ta_uart2400.c or fet440_uart01_02400.c for proper initialization of the USART or for instructions on how to drive UART with a timer. Not receiving all data most likely indicates an error in the baud rate frequency modulation, please note that a LFXT can only support up to 9600 baud but should most likely be limited to 2400 to minimize TX/RX error.

    Regards,
    Ryan

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