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Diffstat (limited to 'docs/feature_pointing_device.md')
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diff --git a/docs/feature_pointing_device.md b/docs/feature_pointing_device.md index ce716a8c8f..c459ba4e9d 100644 --- a/docs/feature_pointing_device.md +++ b/docs/feature_pointing_device.md @@ -197,6 +197,24 @@ The Pimoroni Trackball module is a I2C based breakout board with an RGB enable t | `PIMORONI_TRACKBALL_DEBOUNCE_CYCLES` | (Optional) The number of scan cycles used for debouncing on the ball press. | `20` | | `PIMORONI_TRACKBALL_ERROR_COUNT` | (Optional) Specifies the number of read/write errors until the sensor is disabled. | `10` | +### PMW3320 Sensor + +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). + +| Setting | Description | Default | +| ------------------- | ------------------------------------------------------------------- | -------------------------- | +| `PMW3320_SCLK_PIN` | (Required) The pin connected to the clock pin of the sensor. | `POINTING_DEVICE_SCLK_PIN` | +| `PMW3320_SDIO_PIN` | (Required) The pin connected to the data pin of the sensor. | `POINTING_DEVICE_SDIO_PIN` | +| `PMW3320_CS_PIN` | (Required) The pin connected to the cable select pin of the sensor. | `POINTING_DEVICE_CS_PIN` | + +The CPI range is 500-3500, in increments of 250. Defaults to 1000 CPI. + ### PMW 3360 and PMW 3389 Sensor 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). |