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MSP430FR2533: Related to driver lib API

Gerald
Genius 9570 points

Part Number: MSP430FR2533

Hi Experts,

Our customer is working on MSP430FR2533 and using CCS as IDE. He is using driver lib APIs for his firmware. He is confused how to select GPIO MODULE FUNCTION in the API 
GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P1, GPIO_PIN5, GPIO_SECONDARY_MODULE_FUNCTION );
Kindly give us guidance how to decide function priority either it is PRIMARY, SECONDORY or TERNERY.
Thank you so much in advance.

Kind regards,
Gerald

  • 0
    Guru 102905 points

    Refer to data sheet (SLAS942E) Table 6-17. The P1SEL.x column shows a 2-bit number denoting the function setting. These bits refer to P1SEL1.x and P1SEL0.x respectively.

    E.g. P1.5 function TA1.1 requires setting "10"  = 2, so this is the SECONDARY function. This entry also says you should set P1DIR.5=1, so the pin should be set as Output.

  • +1 in reply to Bruce McKenney
    TI__Mastermind 41950 points

    Agree with Bruce that we need to use PxSEL and PxDIR to configure the GPIO function as below

    For the third parameter of function GPIO_setAsPeripheralModuleFunctionOutputPin is used to configure the PxSEL that you can see it just have three values as below

    That means three different value of PxSEL.

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