PMW3610 driver implementation for ZMK with at least Zephyr 3.5
This work is based on ufan's implementation of the driver.
Only GitHub actions builds are covered here. Local builds are different for each user, therefore it's not possible to cover all cases.
Include this project on your ZMK's west manifest in config/west.yml
:
manifest:
remotes:
- name: zmkfirmware
url-base: https://github.com/petejohanson
- name: inorichi
url-base: https://github.com/inorichi
projects:
- name: zmk
remote: zmkfirmware
revision: feat/pointers-move-scroll
import: app/west.yml
- name: zmk-pmw3610-driver
remote: inorichi
revision: main
self:
path: config
Then, edit your build.yml
to look like this:
on: [workflow_dispatch]
jobs:
build:
uses: petejohanson/zmk/.github/workflows/build-user-config.yml@core/zephyr-3.5-update
Now, update your board.overlay
adding the necessary bits (update the pins for your board accordingly):
&pinctrl {
spi0_default: spi0_default {
group1 {
psels = <NRF_PSEL(SPIM_SCK, 0, 8)>,
<NRF_PSEL(SPIM_MOSI, 0, 17)>,
<NRF_PSEL(SPIM_MISO, 0, 17)>;
};
};
spi0_sleep: spi0_sleep {
group1 {
psels = <NRF_PSEL(SPIM_SCK, 0, 8)>,
<NRF_PSEL(SPIM_MOSI, 0, 17)>,
<NRF_PSEL(SPIM_MISO, 0, 17)>;
low-power-enable;
};
};
};
&spi0 {
status = "okay";
compatible = "nordic,nrf-spim";
pinctrl-0 = <&spi0_default>;
pinctrl-1 = <&spi0_sleep>;
pinctrl-names = "default", "sleep";
cs-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
trackball: trackball@0 {
status = "okay";
compatible = "pixart,pmw3610";
reg = <0>;
spi-max-frequency = <2000000>;
irq-gpios = <&gpio0 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
/* optional features */
// snipe-layers = <1>;
// scroll-layers = <2 3>;
// automouse-layer = <4>;
};
};
Now enable the driver config in your board.config
file (read the Kconfig file to find out all possible options):
CONFIG_SPI=y
CONFIG_INPUT=y
CONFIG_ZMK_MOUSE=y
CONFIG_PMW3610=y