Pointing Device is a generic name for a feature intended to be generic: moving the system pointer around. There are certainly other options for it - like mousekeys - but this aims to be easily modifiable and hardware driven. You can implement custom keys to control functionality, or you can gather information from other peripherals and insert it directly here - let QMK handle the processing for you.
There are a number of sensors that are supported by default. Note that only one sensor can be enabled by `POINTING_DEVICE_DRIVER` at a time. If you need to enable more than one sensor, then you need to implement it manually, using the `custom` driver.
| `ANALOG_JOYSTICK_WEIGHTS` | (Optional) Use custom weights for lever positions. | _not defined_ |
| `ANALOG_JOYSTICK_CUTOFF` | (Optional) Cut off movement when joystick returns to start position. | _not defined_ |
If `ANALOG_JOYSTICK_AUTO_AXIS` is used, then `ANALOG_JOYSTICK_AXIS_MIN` and `ANALOG_JOYSTICK_AXIS_MAX` are ignored.
By default analog joystick implementation uses `x^2` weighting for lever positions. `ANALOG_JOYSTICK_WEIGHTS` allows to experiment with different configurations that might feel better.
E.g. This is weights for `((x-0.4)^3+0.064)/0.282`:
This supports the Cirque Pinnacle 1CA027 Touch Controller, which is used in the TM040040, TM035035 and the TM023023 trackpads. These are I2C or SPI compatible, and both configurations are supported.
**`CIRQUE_PINNACLE_ATTENUATION`** is a measure of how much data is suppressed in regards to sensitivity. The higher the attenuation, the less sensitive the touchpad will be.
Default attenuation is set to 4X, although if you are using a thicker overlay (such as the curved overlay) you will want a lower attenuation such as 2X. The possible values are:
**`CIRQUE_PINNACLE_POSITION_MODE`** can be `CIRQUE_PINNACLE_ABSOLUTE_MODE` or `CIRQUE_PINNACLE_RELATIVE_MODE`. Modes differ in supported features/gestures.
*`CIRQUE_PINNACLE_ABSOLUTE_MODE`: Reports absolute x, y, z (touch pressure) coordinates and up to 5 hw buttons connected to the trackpad
*`CIRQUE_PINNACLE_RELATIVE_MODE`: Reports x/y deltas, scroll and up to 3 buttons (2 of them can be from taps, see gestures) connected to trackpad. Supports taps on secondary side of split. Saves about 2k of flash compared to absolute mode with all features.
Also see the `POINTING_DEVICE_TASK_THROTTLE_MS`, which defaults to 10ms when using Cirque Pinnacle, which matches the internal update rate of the position registers (in standard configuration). Advanced configuration for pen/stylus usage might require lower values.
| `CIRQUE_PINNACLE_TAP_ENABLE` | (Optional) Enable tap to click. This currently only works on the master side. | _not defined_ |
| `CIRQUE_PINNACLE_TAPPING_TERM` | (Optional) Length of time that a touch can be to be considered a tap. | `TAPPING_TERM`/`200` |
| `CIRQUE_PINNACLE_TOUCH_DEBOUNCE` | (Optional) Length of time that a touch can be to be considered a tap. | `TAPPING_TERM`/`200` |
`POINTING_DEVICE_GESTURES_SCROLL_ENABLE` in this mode enables circular scroll. Touch originating in outer ring can trigger scroll by moving along the perimeter. Near side triggers vertical scroll and far side triggers horizontal scroll.
| `CIRQUE_PINNACLE_TAP_ENABLE` | (Optional) Enable tap to "left click". Works on both sides of a split keyboard. | _not defined_ |
| `CIRQUE_PINNACLE_SECONDARY_TAP_ENABLE` | (Optional) Tap in upper right corner (half of the finger needs to be outside of the trackpad) of the trackpad will result in "right click". `CIRQUE_PINNACLE_TAP_ENABLE` must be enabled. | _not defined_ |
Tapping term and debounce are not configurable in this mode since it's handled by trackpad internally.
`POINTING_DEVICE_GESTURES_SCROLL_ENABLE` in this mode enables side scroll. Touch originating on the right side can trigger vertical scroll (IntelliSense trackpad style).
To use the PMW3320 sensor, add this to your `rules.mk`
```make
POINTING_DEVICE_DRIVER = pmw3320
```
The PMW3320 sensor uses a serial type protocol for communication, and requires an additional light source (it could work without one, but expect it to be out of service early).
This drivers supports both the PMW 3360 and PMW 3389 sensor as well as multiple sensors of the same type _per_ controller, so 2 can be attached at the same side for split keyboards (or unsplit keyboards).
To use the **PMW 3360** sensor, add this to your `rules.mk`
If you have different CS wiring on each half you can use `PMW33XX_CS_PIN_RIGHT` or `PMW33XX_CS_PINS_RIGHT` in combination with `PMW33XX_CS_PIN` or `PMW33XX_CS_PINS` to configure both sides independently. If `_RIGHT` values aren't provided, they default to be the same as the left ones.
To use multiple sensors, instead of setting `PMW33XX_CS_PIN` you need to set `PMW33XX_CS_PINS` and also handle and merge the read from this sensor in user code.
Ideally, new sensor hardware should be added to `drivers/sensors/` and `quantum/pointing_device_drivers.c`, but there may be cases where it's very specific to the hardware. So these functions are provided, just in case.
| `POINTING_DEVICE_TASK_THROTTLE_MS` | (Optional) Limits the frequency that the sensor is polled for motion. | _not defined_ |
| `POINTING_DEVICE_GESTURES_CURSOR_GLIDE_ENABLE` | (Optional) Enable inertial cursor. Cursor continues moving after a flick gesture and slows down by kinetic friction. | _not defined_ |
| `POINTING_DEVICE_GESTURES_SCROLL_ENABLE` | (Optional) Enable scroll gesture. The gesture that activates the scroll is device dependent. | _not defined_ |
When using `SPLIT_POINTING_ENABLE` the `POINTING_DEVICE_MOTION_PIN` functionality is not supported and `POINTING_DEVICE_TASK_THROTTLE_MS` will default to `1`. Increasing this value will increase transport performance at the cost of possible mouse responsiveness.
The `POINTING_DEVICE_CS_PIN`, `POINTING_DEVICE_SDIO_PIN`, and `POINTING_DEVICE_SCLK_PIN` provide a convenient way to define a single pin that can be used for an interchangeable sensor config. This allows you to have a single config, without defining each device. Each sensor allows for this to be overridden with their own defines.
Any pointing device with a lift/contact status can integrate inertial cursor feature into its driver, controlled by `POINTING_DEVICE_GESTURES_CURSOR_GLIDE_ENABLE`. e.g. PMW3360 can use Lift_Stat from Motion register. Note that `POINTING_DEVICE_MOTION_PIN` cannot be used with this feature; continuous polling of `get_report()` is needed to generate glide reports.
The following configuration options are only available when using `SPLIT_POINTING_ENABLE` see [data sync options](split_keyboard#data-sync-options). The rotation and invert `*_RIGHT` options are only used with `POINTING_DEVICE_COMBINED`. If using `POINTING_DEVICE_LEFT` or `POINTING_DEVICE_RIGHT` use the common configuration above to configure your pointing device.
If there is a `_RIGHT` configuration option or callback, the [common configuration](pointing_device#common-configuration) option will work for the left. For correct left/right detection you should setup a [handedness option](split_keyboard#setting-handedness), `EE_HANDS` is usually a good option for an existing board that doesn't do handedness by hardware.
| `pointing_device_init_kb(void)` | Callback to allow for keyboard level initialization. Useful for additional hardware sensors. |
| `pointing_device_init_user(void)` | Callback to allow for user level initialization. Useful for additional hardware sensors. |
| `pointing_device_task_kb(mouse_report)` | Callback that sends sensor data, so keyboard code can intercept and modify the data. Returns a mouse report. |
| `pointing_device_task_user(mouse_report)` | Callback that sends sensor data, so user code can intercept and modify the data. Returns a mouse report. |
The combined functions below are only available when using `SPLIT_POINTING_ENABLE` and `POINTING_DEVICE_COMBINED`. The 2 callbacks `pointing_device_task_combined_*` replace the single sided equivalents above. See the [combined pointing devices example](pointing_device#combined-pointing-devices)
| `pointing_device_set_shared_report(mouse_report)` | Sets the shared mouse report to the assigned `report_mouse_t` data structured passed to the function. |
| `pointing_device_set_cpi_on_side(bool, uint16_t)` | Sets the CPI/DPI of one side, if supported. Passing `true` will set the left and `false` the right |
| `pointing_device_combine_reports(left_report, right_report)` | Returns a combined mouse_report of left_report and right_report (as a `report_mouse_t` data structure) |
| `pointing_device_task_combined_kb(left_report, right_report)` | Callback, so keyboard code can intercept and modify the data. Returns a combined mouse report. |
| `pointing_device_task_combined_user(left_report, right_report)` | Callback, so user code can intercept and modify. Returns a combined mouse report using `pointing_device_combine_reports` |
| `pointing_device_adjust_by_defines_right(mouse_report)` | Applies right side rotations and invert configurations to a raw mouse report. |
*`mouseReport.x` - this is a signed int from -127 to 127 (not 128, this is defined in USB HID spec) representing movement (+ to the right, - to the left) on the x axis.
*`mouseReport.y` - this is a signed int from -127 to 127 (not 128, this is defined in USB HID spec) representing movement (+ upward, - downward) on the y axis.
*`mouseReport.v` - this is a signed int from -127 to 127 (not 128, this is defined in USB HID spec) representing vertical scrolling (+ upward, - downward).
*`mouseReport.h` - this is a signed int from -127 to 127 (not 128, this is defined in USB HID spec) representing horizontal scrolling (+ right, - left).
*`mouseReport.buttons` - this is a uint8_t in which all 8 bits are used. These bits represent the mouse button state - bit 0 is mouse button 1, and bit 7 is mouse button 8.
*`pointing_device_send()` - Sends the mouse report to the host and zeroes out the report.
When the mouse report is sent, the x, y, v, and h values are set to 0 (this is done in `pointing_device_send()`, which can be overridden to avoid this behavior). This way, button states persist, but movement will only occur once. For further customization, both `pointing_device_init` and `pointing_device_task` can be overridden.
Additionally, by default, `pointing_device_send()` will only send a report when the report has actually changed. This prevents it from continuously sending mouse reports, which will keep the host system awake. This behavior can be changed by creating your own `pointing_device_send()` function.
In this example, a custom key is used to click the mouse and scroll 127 units vertically and horizontally, then undo all of that when released - because that's a totally useful function.
A very common implementation is to use the mouse movement to scroll instead of moving the cursor on the system. This uses the `pointing_device_task_user` callback to intercept and modify the mouse report before it's sent to the host system.
Sometimes, like with the Cirque trackpad, you will run into issues where the scrolling may be too fast.
Here is a slightly more advanced example of drag scrolling. You will be able to change the scroll speed based on the values in set in `SCROLL_DIVISOR_H` and `SCROLL_DIVISOR_V`. This bit of code is also set up so that instead of toggling the scrolling state with set_scrolling = !set_scrolling, the set_scrolling variable is set directly to record->event.pressed. This way, the drag scrolling will only be active while the DRAG_SCROLL button is held down.
```c
enum custom_keycodes {
DRAG_SCROLL = SAFE_RANGE,
};
bool set_scrolling = false;
// Modify these values to adjust the scrolling speed
#define SCROLL_DIVISOR_H 8.0
#define SCROLL_DIVISOR_V 8.0
// Variables to store accumulated scroll values
float scroll_accumulated_h = 0;
float scroll_accumulated_v = 0;
// Function to handle mouse reports and perform drag scrolling
If you are having issues with pointing device drivers debug messages can be enabled that will give you insights in the inner workings. To enable these add to your keyboards `config.h` file:
When using a pointing device combined with a keyboard the mouse buttons are often kept on a separate layer from the default keyboard layer, which requires pressing or holding a key to change layers before using the mouse. To make this easier and more efficient an additional pointing device feature may be enabled that will automatically activate a target layer as soon as the pointing device is active _(in motion, mouse button pressed etc.)_ and deactivate the target layer after a set time.
Additionally if any key that is defined as a mouse key is pressed then the layer will be held as long as the key is pressed and the timer will be reset on key release. When a non-mouse key is pressed then the layer is deactivated early _(with some exceptions see below)_. Mod, mod tap, and one shot mod keys are ignored _(i.e. don't hold or activate layer but do not deactivate the layer either)_ when sending a modifier keycode _(e.g. hold for mod tap)_ allowing for mod keys to be used with the mouse without activating the target layer when typing.
All of the standard layer keys (tap toggling, toggle, toggle on, one_shot, layer tap, layer mod) that activate the current target layer are uniquely handled to ensure they behave as expected _(see layer key table below)_. The target layer that can be changed at any point during by calling the `set_auto_mouse_layer(<new_target_layer>);` function.
### Behaviour of Layer keys that activate the target layer
| Layer key as in `keymap.c` | Auto Mouse specific behaviour |
| `MO(<target_layer>)` | Treated as a mouse key holding the layer while pressed |
| `LT(<target_layer>)` | When tapped will be treated as non mouse key and mouse key when held |
| `LM(<target_layer>)` | Treated as a mouse key |
| `TG(<target_layer>)` | Will set flag preventing target layer deactivation or removal until pressed again |
| `TO(<target_layer>)` | Same as `TG(<target_layer>)` |
| `TT(<target_layer>)` | Treated as a mouse key when `tap.count < TAPPING_TOGGLE` and as `TG` when `tap.count == TAPPING_TOGGLE` |
| `DF(<target_layer>)` | Skips auto mouse key processing similar to mod keys |
| `OSL(<target_layer>)` | Skips, but if current one shot layer is the target layer then it will prevent target layer deactivation or removal |
## How to enable:
```c
// in config.h:
#define POINTING_DEVICE_AUTO_MOUSE_ENABLE
// only required if not setting mouse layer elsewhere
#define AUTO_MOUSE_DEFAULT_LAYER <index of your mouse layer>
// in keymap.c:
void pointing_device_init_user(void) {
set_auto_mouse_layer(<mouse_layer>); // only required if AUTO_MOUSE_DEFAULT_LAYER is not set to index of <mouse_layer>
set_auto_mouse_enable(true); // always required before the auto mouse feature will work
}
```
Because the auto mouse feature can be disabled/enabled during runtime and starts as disabled by default it must be enabled by calling `set_auto_mouse_enable(true);` somewhere in firmware before the feature will work.
_Note: for setting the target layer during initialization either setting `AUTO_MOUSE_DEFAULT_LAYER` in `config.h` or calling `set_auto_mouse_layer(<mouse_layer>)` can be used._
## How to Customize:
There are a few ways to control the auto mouse feature with both `config.h` options and functions for controlling it during runtime.
### `config.h` Options:
| Define | Description | Range | Units | Default |
While all default mouse keys and layer keys(for current mouse layer) are treated as mouse keys, additional Keyrecords can be added to mouse keys by adding them to the is_mouse_record_* stack.
#### Callbacks for setting up additional key codes as mouse keys:
##### To use the callback function to add mouse keys:
The following code will cause the enter key and all of the arrow keys to be treated as mouse keys (hold target layer while they are pressed and reset active layer timer).
- _Due to the nature of how some functions work, the `auto_mouse_trigger_reset`, and `auto_mouse_layer_off` functions should never be called in the `layer_state_set_*` stack as this can cause indefinite loops._
- _It is recommended that `remove_auto_mouse_layer` is used in the `layer_state_set_*` stack of functions and `auto_mouse_layer_off` is used everywhere else_
- _`remove_auto_mouse_layer(state, false)` or `auto_mouse_layer_off()` should be called before any instance of `set_auto_mouse_enabled(false)` or `set_auto_mouse_layer(layer)` to ensure that the target layer will be removed appropriately before disabling auto mouse or changing target to avoid a stuck layer_
| `auto_mouse_trigger_reset(bool pressed)` | Reset auto mouse status on key down and start delay timer (non-mouse key event) | `void`(None) |
| `auto_mouse_toggle(void)` | Toggle on/off target toggle state (disables layer deactivation when true) | `void`(None) |
| `get_auto_mouse_toggle(void)` | Return value of toggling state variable | `bool` |
_NOTE: Generally it would be preferable to use the `is_mouse_record_*` functions to add any additional keys that should act as mouse keys rather than adding `auto_mouse_keyevent(record.event->pressed)` to `process_records_*`_
### Advanced control examples
#### Disable auto mouse on certain layers:
The auto mouse feature can be disabled any time and this can be helpful if you want to disable the auto mouse feature under certain circumstances such as when particular layers are active. One issue however is the handling of the target layer, it needs to be removed appropriately **before** disabling auto mouse _(see notes under control functions above)_. The following function would disable the auto_mouse feature whenever the layers `_LAYER5` through `_LAYER7` are active as the top most layer _(ignoring target layer)_.
The below code will change the auto mouse layer target to `_MOUSE_LAYER_2` when `_DEFAULT_LAYER_2` is highest default layer state.
*NOTE: that `auto_mouse_layer_off` is used here instead of `remove_auto_mouse_layer` as `default_layer_state_set_*` stack is separate from the `layer_state_set_*` stack*, if something similar was to be done in `layer_state_set_user`, `state = remove_auto_mouse_layer(state, false)` should be used instead.
*ADDITIONAL NOTE: `AUTO_MOUSE_TARGET_LAYER` is checked if already set to avoid deactivating the target layer unless needed*.
Custom key records could also be created that control the auto mouse feature.
The code example below would create a custom key that would toggle the auto mouse feature on and off when pressed while also setting a bool that could be used to disable other code that may turn it on such as the layer code above.
auto_mouse_layer_off(); // disable target layer if needed
set_auto_mouse_enabled((AUTO_MOUSE_ENABLED) ^ 1);
auto_mouse_tg_off = !get_auto_mouse_enabled();
} // do nothing on key up
return false; // prevent further processing of keycode
}
}
```
## Customize Target Layer Activation
Layer activation can be customized by overwriting the `auto_mouse_activation` function. This function is checked every time `pointing_device_task` is called when inactive and every `AUTO_MOUSE_DEBOUNCE` ms when active, and will evaluate pointing device level conditions that trigger target layer activation. When it returns true, the target layer will be activated barring the usual exceptions _(e.g. delay time has not expired)_.
By default it will return true if any of the `mouse_report` axes `x`,`y`,`h`,`v` are non zero, or if there is any mouse buttons active in `mouse_report`.
_Note: The Cirque pinnacle track pad already implements a custom activation function that will activate on touchdown as well as movement all of the default conditions, currently this only works for the master side of split keyboards._
