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WEBENCH® Tools/MSP430F67641: Need Help in using Uart 1 instead of Uart 0

Kamal K
Prodigy 30 points
Part Number: MSP430F67641
Other Parts Discussed in Thread: MSP430WARE

Tool/software: WEBENCH® Design Tools

Hi,

I am working on 3ph metering using msp430 f67641, I want to know how can i change the uart settings from Uart 0 to Uart 1. And also how to change rs232 given to rs485. Where should the changes be made, if i wer to change my hardware to rs485 in the program. 

  • 0
    TI__Guru 56685 points
    Hello Kamal,

    Changing from UARTA0 to UARTA1 is rather simple. If you are using the same setting, most fo the registers are pre-fixed with UARTA0 (such as UARTA0CTL0). Just changing the prefix to UARTA1 will call the correct register. Make sure to change the ISR to A1 as well. Beyond the name change, you will have to setup the appropriate pinout for UARTA1 instead of UARTA0. You can easily do this change in our example code within MSP430Ware before changing your own project.

    I'm not sure of HW changes needed for RS232 versus RS485 as I'm not readily familiar with the differences between the two.
  • 0
    Guru 41995 points
    For the other question, you need to swap out whatever chip you are using for RS-232 and put in one for RS-485.
  • 0 in reply to Keith Barkley
    Prodigy 30 points
    What about the other Control pis required for the IC operation
  • 0 in reply to Kamal K
    Guru 41995 points

    I am not exactly sure what "pis" you mean, but you need to dedicate some GPIO pins for those functions. The other half of the differential signal is handled by the IC. RS-232 has a bunch of control pins that are usually ignored.

  • 0 in reply to Keith Barkley
    Prodigy 30 points
    Thanks for the reply.

    It was not meant to be offensive, its typing error "pis =pins".

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