PWM on PYNQ_Z2 to a motor

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1

I Need help, please How to give PWM to a motor through a digital pin on PYNQ-Z2 using PMOD or how can I do it?

3

@Ismael_Alejandro_Rod check this Pmod — Python productivity for Zynq (Pynq) and this pynq.lib.pmod Package — Python productivity for Zynq (Pynq). Those links should help

4

@Ismael_Alejandro_Rod you need something similar to this piece of code

from pynq.overlays.base import BaseOverlay
base = BaseOverlay('base.bit')
from pynq.lib import Pmod_PWM

# Select PMOD (PMODA or PMODB) and output pin (0 -7)
pwm = Pmod_PWM(base.PMODA,2)
# Set period in ms and duty cycle
pwm.generate(100,50)
# Stop PWM
pwm.stop()

PMOD pinout is shown here Pmod — Python productivity for Zynq (Pynq). Bear in mind the maximum current that these pins can provide.

Mario

5

thank you so much marioruiz, one question more, please. which is the maximum current that these pins of PMOD can provide?

6

It depends, but maximum 14 mA. https://forums.xilinx.com/t5/Welcome-Join/Max-output-current-gpio-pin-Zynq-XC7Z020/td-p/713323. You would need some kind of driver if you want higher output current.

Mario

7

thanks you so much marioruiz
the pins of package arduino also provide the same current ?

8

Yes, maximum of 14 mA.

9

marioruiz one question more, the period is in miliseconds(ms) or microseconds (us)?

10

It is in microseconds (us), more documentation here pynq.lib.pmod Package — Python productivity for Zynq (Pynq)