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pinMode INPUT_PULLDOWN not working properly on MSP432

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pinMode(n, INPUT_PULLDOWN) does not work on MSP432. The pins seem to function as input and the pull-up is always enabled in any input mode.

 

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Here is the problem. In C:\energia-0101E0015\hardware\msp432\cores\msp432\wiring_digital.c the pull directions are ignored.

 

 

GPIO_PinConfig mode2gpioConfig(uint8_t pin, uint8_t mode)
{
   switch (mode) {
        case INPUT:
        case INPUT_PULLUP:
            digital_pin_to_pin_function[pin] = PIN_FUNC_DIGITAL_INPUT;
            return (GPIO_CFG_IN_PU);


        case INPUT_PULLDOWN:
            digital_pin_to_pin_function[pin] = PIN_FUNC_DIGITAL_INPUT;
            return (GPIO_CFG_IN_PD);


        case OUTPUT:
            digital_pin_to_pin_function[pin] = PIN_FUNC_DIGITAL_OUTPUT;
            return (GPIO_CFG_OUT_STR_HIGH);
    }

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