pxt-calliope/docs/reference/pins/analog-set-period.md
2016-06-30 11:02:28 -07:00

32 lines
1015 B
Markdown

# Analog Set Period
Configure the period of Pulse Width Modulation (PWM) on the specified
analog [pin](/device/pins).
Before you call this function, you should set the specified pin as analog.
```sig
pins.analogSetPeriod(AnalogPin.P0, 20000)
```
### Parameters
* `pin`: a [string](/reference/types/string) that specifies the pin to configure (`P0` through `P4`, or `P10`)
* `μs`: a [number](/reference/types/number) that specifies the analog period in microseconds.
The following code first sets `P0` to analog with **analog write
pin**, and then sets the PWM period of `P0` to 20,000 microseconds.
```blocks
pins.analogWritePin(AnalogPin.P0, 512)
pins.analogSetPeriod(AnalogPin.P0, 20000)
```
### See also
[micro:bit pins](/device/pins),
[on pin pressed](/reference/input/on-pin-pressed),
[analog read pin](/reference/pins/analog-read-pin),
[analog write pin](/reference/pins/analog-write-pin),
[digital read pin](/reference/pins/digital-read-pin),
[digital write pin](/reference/pins/digital-write-pin)