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| author | Damien George <damien.p.george@gmail.com> | 2016-01-29 23:06:13 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-01-29 23:06:13 +0000 |
| commit | 0f87a010e331c42fe020ad2803e5a1b67065b87a (patch) | |
| tree | 65a3d3d0ade3350f6823284c9d43ace30f37dc9d /docs/library/pyb.LED.rst | |
| parent | a8a4b01af6501ff7ab61b251fc30fcf8a286f8d1 (diff) | |
| download | micropython-0f87a010e331c42fe020ad2803e5a1b67065b87a.tar.gz micropython-0f87a010e331c42fe020ad2803e5a1b67065b87a.zip | |
docs: Update to say that Timer(3) is free, and detail LED intensity.
Diffstat (limited to 'docs/library/pyb.LED.rst')
| -rw-r--r-- | docs/library/pyb.LED.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/library/pyb.LED.rst b/docs/library/pyb.LED.rst index 461ea57d31..aeeb75b8f1 100644 --- a/docs/library/pyb.LED.rst +++ b/docs/library/pyb.LED.rst @@ -25,6 +25,12 @@ Methods If no argument is given, return the LED intensity. If an argument is given, set the LED intensity and return ``None``. + *Note:* Only LED(3) and LED(4) can have a smoothly varying intensity, and + they use timer PWM to implement it. LED(3) uses Timer(2) and LED(4) uses + Timer(3). These timers are only configured for PWM if the intensity of the + relevant LED is set to a value between 1 and 254. Otherwise the timers are + free for general purpose use. + .. method:: led.off() Turn the LED off. |