8000 PWMOut duty_cycle wrong when using variable frequency. · Issue #148 · adafruit/circuitpython · GitHub
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PWMOut duty_cycle wrong when using variable frequency. #148

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tannewt opened this issue Jun 6, 2017 · 0 comments
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PWMOut duty_cycle wrong when using variable frequency. #148

tannewt opened this issue Jun 6, 2017 · 0 comments

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@tannewt
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tannewt commented Jun 6, 2017

The duty cycle is incorrect after changing the frequency of a variable frequency PWMOut.

    piezo.frequency = int(tone)
    piezo.duty_cycle = 2 ** 15  # half of max
    time.sleep(duration)
    piezo.duty_cycle = 0
@tannewt tannewt closed this as completed in a884acc Jun 9, 2017
dhalbert pushed a commit to dhalbert/circuitpython that referenced this issue Jul 21, 2017
@tannewt @dhalbert
atmel-samd: Fix PWMOut duty_cycle when used with TCC peripherals.
6ea2a86 
Fixes adafruit#148. Fixes adafruit#151
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