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PWM behavior has changed #13600

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Closed
PWM behavior has changed#13600

Description

@ThHupk
ThHupk
opened on Feb 5, 2024

PWM frequency now defaults to 0. Used to be 1907. Programs now are obliged to set the frequency.

from machine import PWM
led = PWM('LED')
led.freq()
0

Activity

  1. ThHupk
    added
    bug
    on Feb 5, 2024

  2. ricksorensen commented on Feb 5, 2024

    @ricksorensen
    ricksorensen
    on Feb 5, 2024
    Contributor

    See now closed pull request #10850. PWM behavior has been update to be more consistent between ports. I believe the default behavior is to not start PWM if freq/duty not specified.
    #10850 (comment)

  3. robert-hh commented on Feb 5, 2024

    @robert-hh
    robert-hh
    on Feb 5, 2024
    Contributor

    The only port which was not yet aligned is the ESP32 port. There is an open PR #10854 aligning most of the behavior. Only with this port PWM starts at a default frequency of 5000Hz, duty_u16=32768. All other ports now requires freq and duty rate to be set deliberately to get a signal.

  4. robert-hh
    removed
    bug
    on Feb 5, 2024
  5. robert-hh
    converted this issue into a discussion #13601 on Feb 5, 2024
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