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wdcai
Visitor II
October 15, 2004
Question

Second uart

  • October 15, 2004
  • 3 replies
  • 904 views
Posted on October 15, 2004 at 04:56

Second uart

    This topic has been closed for replies.

    3 replies

    W
    wdcaiAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:03

    Hi,All!

    Can some SFR about second uart ,such like scon2, be read or written in bit mode? The demo source code provided by ST operates this SFR in BYTE mode!

    Thanks!

    J
    joseph2399
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:03

    The second UART in the uPSD33xx devices is bit addressable. The second UART in the uPSD32xx devices is only byte addressable. I am not sure what demo code you are looking at, but it is probably a carryover from the 32xx and was not updated to take advantage of the bit addressability available in the 33xx.

    L
    lwang
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:03

    Whenever the address of a SFR is divisible by 8, that SFR is bit addressable!

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