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MSPM0C1104: Bepper Output frequency is not generating in SOT-8 package but generates in Launch pad

Yuvaraj S
Prodigy 30 points
Part Number: MSPM0C1104

Tool/software:

Hi All , 

       I'm working with MSPM0C1104 microcontroller using CCS ver 20 . I'm trying to generate 1Khz frequency using Beeper  through the pin PA0 . I have done the Beeper setting using the configurator in CCS and I loaded the generated code  to my launchpad the Beeper pulse generates correctly through PA0 , then I changed the package Vssop - 20 to SOT-8  using the configurator and load the generated  code to the custom board ( custom board is powered through  Launchpad )  and now the Beeper frequency is not generating ( no waves are coming out  from PA0 pin ).  

 empty_driverlib_src_LP_MSPM0C1104_nortos_ticlang.rar

  • 0
    TI__Intellectual 1911 points

    Hi Yuvaraj,

    I downloaded your project and flashed it to a LaunchPad and it seems to work as intended. Is it possible for you to share the schematic of your custom board? If necessary, you can also send it to msp-sbd-review@list.ti.com. This will also allow anyone on the MSP team to review the schematic, as well.

    Best,

    Owen

  • 0 in reply to Owen Li
    Prodigy 30 points

    Hi Owen,

    Thanks for the reply. i don't have schematic i just bought a sot-8 to dip-8 pcb adaptor board , i'm powering  the microcontroller with 3.3v power supply unit . That it .  Is the PA0 pin open drain pin should i add a pull up resistor as like as in the launchpad to generate the buzzer pulses

  • 0 in reply to Yuvaraj S
    TI__Intellectual 1911 points

    Hi Yuvaraj,

    Yes, PA0 is an open drain pin and needs a pull-up resistor in order to drive a signal. This is most likely why you aren't observing a signal on the pin.

    Best,

    Owen