# PWM

Currently, this module only gets enabled programatically. For example, see [Lights module](Lights.md)

## Terminal

| Command | description |
| --- | --- |
|**pwm.write** <channel> <duty>|Set PWM channel duty (percentage)|

## Settings

|Key|Description|Possible values|Default value|
| --- | --- | --- | --- |
|pwmFreq||(depends on the provider)|500 (Hz)|
|pwmRes|Output duty resolution, in bits|8...12bit (depends on the provider)|10 (bit)|
|pwmLimit|Maximum duty allowed|0...100 (%)|100 (%)|

## Build-time configuration

| **Option** | **Note** | 
| --- | --- | 
| `PWM_PROVIDER=...` | Either `PWM_PROVIDER_GENERIC` or `PWM_PROVIDER_ARDUINO`. Default, `PWM_PROVIDER_GENERIC` |
| `PWM_FREQUENCY` | `500` (default) |
| `PWM_RESOLUTION` | `10` (default) |
| `PWM_DUTY_LIMIT` | `100` (default) |