You could use the SPI interface
Am Samstag, 18. Oktober 2014 03:26:26 UTC+2 schrieb plla...@gmail.com:
http://electronics.stackexchange.com/questions/134356/beaglebone-generate-finite-pulse-train#
I'm wanting to use the BeagleBone Black to generate a FINITE number of
pulses, in order to control a stepper motor. For the controller I have, an
A4988, each pulse is one step on the motor. How can I use the PWM on the
BBB to send, say, 5 pulses, and no more or less than 5? Or I can use a
GPIO. Whichever works.
I have the Adafruit BBIO library
https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/using-the-bbio-library
installed. I have thought of doing this in a simple, stupid way - just
using python's time.wait() and toggling a GPIO pin, however many times
I'd like. But this seems very inaccurate, timing-wise, and moreover
inelegant; is there a way to do this better? I'm also investigating events
-- i.e., count the numberof pulses that have occured using another GPIO,
then stop the PWM when the number of pulses I want has been counted.
Any ideas?
--
For more options, visit http://beagleboard.org/discuss
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