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TB0.6 and TB0.5 Timer on MSP430F5529

Taha Khan
Prodigy 20 points

Hi,

I have a problem which I'm not sure how it happened. I was generating 2 pwm signals from timers TB0.5 and Tb0.6 which were connected to the motor with an h bridge circuit. Everything was working fine. But now one of the pin is just constantly outputting. Even if I load a new program while debugging it still outputs signal. Due to this reason I'm not able to use this pin for pwm any longer. Any of you know what is going on?

  • 0
    Guru 227245 points

    It's possible that you stressed the port pins beyond limits. To protect the port pins against negative or overvoltage, they have clamp diodes connected to VCC and GND. However, if you stress them too much, they may melt and either break (leaving the port pin unprotected) or short (making the port pin permanent GND or VCC).

    The bridge circuit should have protected the port pins against inductive transients from the motor, but depending on your exact circuitry, things may have gone wrong.

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