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fix

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Maxim Devaev 2024-01-27 11:55:13 +02:00
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docs/gpio.md
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@ -352,7 +352,7 @@ kvmd
The `pwm` driver allows you to use [some GPIO pins](https://pinout.xyz/pinout/pwm) on the Raspberry Pi for PWM. The `pwm` driver allows you to use [some GPIO pins](https://pinout.xyz/pinout/pwm) on the Raspberry Pi for PWM.
!!! note !!! note
Due to hardware limitations, this module conflicts with the **kvmd-fan** (PiKVM fan controller). Due to hardware limitations, this module conflicts with the **kvmd-fan** (the fan controller) on PiKVM V3 and V4 Plus.
To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`: To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`:
```ini ```ini
@ -360,25 +360,23 @@ kvmd
pwm_soft = 80 pwm_soft = 80
``` ```
_Not needed for v4-mini because it does not have a fan._ *Not needed for V4 Mini because it does not have a fan.*
Here the small example with servo control: Here the small example with servo control:
1a. For ≤ v3 add to `/boot/config.txt`: 1. Add some params to `/boot/config.txt`:
``` * For PiKVM V3 or DIY device to enable [PWM0_0](https://github.com/dotnet/iot/blob/main/Documentation/raspi-pwm.md#enabling-hardware-pwm) on RPi GPIO18:
dtoverlay=pwm
```
to enable [PWM0_0](https://github.com/dotnet/iot/blob/main/Documentation/raspi-pwm.md#enabling-hardware-pwm) on RPi GPIO18. ```ini
dtoverlay=pwm
```
1b. For ≥ v4 add to `/boot/config.txt`: * For PiKVM V4 to enable [PWM0_0](https://github.com/dotnet/iot/blob/main/Documentation/raspi-pwm.md#enabling-hardware-pwm) on CM4 GPIO12 (CN5 NeoPixel Pin) and set the PWM function to 4 (ALT0):
``` ```ini
dtoverlay=pwm,pin=12,func=4 dtoverlay=pwm,pin=12,func=4
``` ```
to enable [PWM0_0](https://github.com/dotnet/iot/blob/main/Documentation/raspi-pwm.md#enabling-hardware-pwm) on CM4 GPIO12 (CN5 NeoPixel Pin) and set the PWM function to 4 (ALT0).
2. Create `/etc/udev/rules.d/99-kvmd-pwm.rules`: 2. Create `/etc/udev/rules.d/99-kvmd-pwm.rules`:
@ -443,7 +441,7 @@ kvmd
The `servo` module is built on top of the `pwm` module and allows user to define angles instead of `duty_cyles` to control a PWM enabled servo motor like SG90. When the button is pressed the servo motor moves to an angle defined by `angle_push` and when button is released it moves back to `angle_release`. In the example configuration for a [cheap 5V SG90 Servo](https://www.ebay.co.uk/sch/i.html?_nkw=5V+SG90+Servo), the motor moves to an angle of 45 degrees when button is pressed and moves back to 20 degress when released. The `servo` module is built on top of the `pwm` module and allows user to define angles instead of `duty_cyles` to control a PWM enabled servo motor like SG90. When the button is pressed the servo motor moves to an angle defined by `angle_push` and when button is released it moves back to `angle_release`. In the example configuration for a [cheap 5V SG90 Servo](https://www.ebay.co.uk/sch/i.html?_nkw=5V+SG90+Servo), the motor moves to an angle of 45 degrees when button is pressed and moves back to 20 degress when released.
!!! note !!! note
Due to hardware limitations, this module conflicts with the **kvmd-fan** (PiKVM fan controller). Due to hardware limitations, this module conflicts with the **kvmd-fan** (the fan controller) on PiKVM V3 and V4 Plus.
To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`: To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`:
```ini ```ini
@ -451,7 +449,7 @@ kvmd
pwm_soft = 80 pwm_soft = 80
``` ```
_Not needed for v4-mini because it does not have a fan._ *Not needed for v4-mini because it does not have a fan.*
To use Servo motors in PiKVM you need to follow steps 1-3 for [PWM Module](#pwm) and then use the following configuration. To use Servo motors in PiKVM you need to follow steps 1-3 for [PWM Module](#pwm) and then use the following configuration.