#Using digitalio with pulseio

1 messages · Page 1 of 1 (latest)

dusky musk
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@solid iron I don't think you can do both at the same time since setting it high or low would interrupt the pulse sequence it's trying to read. I assume you mean to do them at different times like one after the other or similar. In that case I think you'll need to deinit() each object before switching to the other one, then deinit() again when you are ready to switch back.

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Yep you're welcome. I think you got the right idea:

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- initialize for digitalio
- set it to HIGH / LOW as desired
- deinit digitalio
- initialize for pulseio
- read pulses
- deinit pulseio
- repeat from top.
dusky musk
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I think you would need MOTOR_A_EN.deinit() before pulses = PulseIn(MOTOR_EN_A_PIN)

And then to call MOTOR_A_EN = DigitalInOut(MOTOR_EN_A_PIN) again the next time you want to use it as digitalio.

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I think the pin can only be initialized for one type of object at a time. So it can be either a DigitalInOut or a PulseIn. But not both at the same time. If you want to switch from one to the other then you must deinit() the current one before initializing the next one.

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You're welcome. I'm always happy to help folks out where I can.

dusky musk
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can you share you full current code? I'll take a look.

dusky musk
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I think this line:

deinit(digital_pin)

should maybe be this way:

digital_pin.deinit()

But I think you do have the right idea about needing to pass both into the read_pulses() function

dusky musk
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@solid iron maybe MOTOR_A_EN and MOTOR_A_EN need to be global declared also insde of init_motor_pwms()?

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I'm not sure you need to return the digital_pin here from read_pulses()

return result_pulses, digital_pin
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I commented out the B pin one. I would recommend focus on one until it works, then copy the code that works to the other one.

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I moved the DigitalIO deinit and setting back up outside of the read_pulses() method. This way it doesn't need to return the new DigitalInOut object. I didn't run this code so it's possible there may be syntax error. Or perhaps some of the variables may still need to be global.