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RTOS/LAUNCHCC3220MODASF: To use PIN_58 of CC3220MODA board as GPIO

Nishi Khetwal
Prodigy 80 points
Part Number: LAUNCHCC3220MODASF
Other Parts Discussed in Thread: OPA4342,

Tool/software: TI-RTOS

Hi,

I am  working on a project where I need to interface a button on pin 58 of CC3220MODASF but it is not working. I checked the datasheet ,it  has ADC_channel0,GPIO_03 on that pin.I am able to read ADC from that pin but not GPIO. I aslo used the driverlib to change the pin states but it didn't work.

I want to know if we can use the pins which has ADC on it as GPIO or not.

Thanks

  • 0
    Guru 39650 points

    Hi,

    PIN58 at LAUNCHCC3220MODASF is intended to be used as ADC. From this reason there is connected buffer (OPA4342) to this pin. In case you want to use PIN58 as digital I/O you need to do hardware modification of your LaunchPad. You should do:

    • populate R0 at position R90
    • remove R92, R94, R96 and C29

    See schematic for LaunchPad:

    Jan