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MSP430G2452 P1.0, P1.1, P1.2 pinosc

Dan Hoffman
Prodigy 20 points

Based on the data sheet for the MSP430G2452 I tired to enable the pin oscillators on these port pins.  It looked like according to the data sheet that it was designed into the port.  I noted that the pin circuit diagram indicated that both the compare and ADC functions needed to be deselected at the module.  Setting both inactive still did not allow the pinosc to function. 

These are the pins used in the pinosc example one "which did not work" but then it was a generic program not specifically designed for this unit.  

Does anyone know if the pinosc are implemented on these pins and if so anything additional I need to do.

P.S.  pinosc on other indicated ports work I checked P1.5, P1.4, P2.x

  • 0
    Guru 227245 points

    Aren't those pins connected to the programmer part on the LaunchPad board (I guess you use this). You'll need to remove the jumpers to let these pins oscillate.

  • 0 in reply to Jens-Michael Gross
    Prodigy 20 points

    Well yes P1.0 is tied through a jumper to drive a LED through a resistor.  The would explain why the ~50K pull up/down for it would not be effectively able to oscillate.  That still leaves P1.1 and P1.2 which are not tied.  I will pull the jumper on P1.0 and check it again.

  • 0 in reply to Dan Hoffman
    TI__Genius 17802 points

    Dan,

    P1.1 & P1.2 are connected to the TXD & RXD lines & jumpers. They were intended to provide UART communication back to the PC. Make sure to pull these two jumpers too.

    ~Dung

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