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MSP430G2233 Question

Yoke Wee Lau
Prodigy 70 points
Other Parts Discussed in Thread: MSP430G2233

Hi,

Is that possible to do Timer A Capture mode and transmit UART on the same pin?

For Example the MSP430G2233 pin 1.2 Description:

Timer0_A, capture: CCI1A input, compare: Out1 output

USCI_A0 transmit data output in UART mode

Please Advice thank you

  • 0
    Guru 74080 points
    Not at the same time, of course. This pin has multiple functions, but you have to configure it to act as one of them. You can switch between the functions during runtime, but you cannot send data and capture things simultaneously.

    Dennis
  • 0
    Guru 12050 points

    If the capture signal is of equal drive strength as the msp pin, when you turn the pin around as uart output they will fight (even to death)
    solution: Put a 2K series resistor on the capture trace.
    Also as the UART-destination is probably still listening when you are using the pin as capture, it will get random data.

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