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AM2634: Unexpected GPIO Interrupts Triggered by Touching Jumper Wire – Need Help.

Part Number: AM2634

Tool/software:

Dear Team,

I'm using AM2634 evaluation board and Gpio interrupt.

I am using a TI microcontroller AM263x and have configured a GPIO pin 43,44, 49,50,51,52 as an external interrupt. The interrupt works as expected when the pin is driven high or low. However, I notice that simply touching the jumper wire connected to the interrupt pin (without connecting it to VCC or GND) triggers the interrupt.

What could be causing this, and what are the best practices to prevent false triggers due to touching ?

  • Hello,

    A human body would provide an electrical connection to ground (or potentially a connection to a power source if you happen to be touching one). This can trigger an interrupt as there is a path for current to travel. To avoid this, try to avoid contact with exposed metal wire ends, and don't leave wires floating around without being connected to anything as this can lead to accidental contact.

    Thank you,

    Susan