suspect-devices/circuitpython/ports/esp8266/esppwm.c, branch mainCircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=main2019-10-13T15:07:07+00:00remove ports/esp82662019-10-13T15:07:07+00:00Dan Halberthalbert@halwitz.org2019-10-13T15:07:07+00:00urn:sha1:7692e06230ae6881588b9887c06a6725505d937cesp8266/esppwm: Always start timer to avoid glitch from full to nonfull.2018-03-05T00:39:44+00:00Olivier Ortigueso.ortigues@gmail.com2018-02-23T14:41:51+00:00urn:sha1:b691aa0aaeb9f55f96d9ed39f214f0a9e555c94d
The PWM at full value was not considered as an "active" channel so if no
other channel was used the timer used to mange PWM was not started. So
when another duty value was set the PWM timer restarted and there was a
visible glitch when driving LEDs. Such a glitch can be seen with the
following code (assuming active-low LED on pin 0):
p = machine.PWM(machine.Pin(0))
p.duty(1023) # full width, LED is off
p.duty(1022) # LED flashes brightly then goes dim
This patch fixes the glitch.
esp8266/esppwm: Clip negative duty numbers to 0.2018-02-15T00:12:41+00:00Olivier Ortigueso.ortigues@gmail.com2018-02-12T22:43:40+00:00urn:sha1:5c83d05b493af58bb14cba9dbfc2bf2d85de2962
Prior to this patch a negative duty would lead to full PWM.
ports: Make new ports/ sub-directory and move all ports there.2017-09-06T03:40:51+00:00Damien Georgedamien.p.george@gmail.com2017-09-06T03:40:51+00:00urn:sha1:01dd7804b87d60b2deab16712eccb3b97351a9b7
This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.