2 files changed, 22 insertions, 9 deletions
diff --git a/drivers/sensors/pimoroni_trackball.c b/drivers/sensors/pimoroni_trackball.c
index 7d390056ea..2867e763bc 100644
--- a/drivers/sensors/pimoroni_trackball.c
+++ b/drivers/sensors/pimoroni_trackball.c
@@ -33,8 +33,24 @@
 
 static uint16_t precision = 128;
 
-float pimoroni_trackball_get_precision(void) { return ((float)precision / 128); }
-void  pimoroni_trackball_set_precision(float floatprecision) { precision = (floatprecision * 128); }
+uint16_t pimoroni_trackball_get_cpi(void) { return (precision * 125); }
+/**
+ * @brief Sets the scaling value for pimoroni trackball
+ *
+ * Sets a scaling value for pimoroni trackball to allow runtime adjustment. This isn't used by the sensor and is an
+ * approximation so the functions are consistent across drivers.
+ *
+ * NOTE: This rounds down to the nearest number divisable by 125 that's a positive integer, values below 125 are clamped to 125.
+ *
+ * @param cpi uint16_t
+ */
+void pimoroni_trackball_set_cpi(uint16_t cpi) {
+    if (cpi < 249) {
+        precision = 1;
+    } else {
+        precision = (cpi - (cpi % 125)) / 125;
+    }
+}
 
 void pimoroni_trackball_set_rgbw(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
     uint8_t                              data[4] = {r, g, b, w};
@@ -60,7 +76,7 @@ i2c_status_t read_pimoroni_trackball(pimoroni_data_t* data) {
     return status;
 }
 
-__attribute__((weak)) void pimironi_trackball_device_init(void) {
+__attribute__((weak)) void pimoroni_trackball_device_init(void) {
     i2c_init();
     pimoroni_trackball_set_rgbw(0x00, 0x00, 0x00, 0x00);
 }
diff --git a/drivers/sensors/pimoroni_trackball.h b/drivers/sensors/pimoroni_trackball.h
index 59ee8724ba..e20ee748a7 100644
--- a/drivers/sensors/pimoroni_trackball.h
+++ b/drivers/sensors/pimoroni_trackball.h
@@ -23,9 +23,6 @@
 #ifndef PIMORONI_TRACKBALL_ADDRESS
 #    define PIMORONI_TRACKBALL_ADDRESS 0x0A
 #endif
-#ifndef PIMORONI_TRACKBALL_INTERVAL_MS
-#    define PIMORONI_TRACKBALL_INTERVAL_MS 8
-#endif
 #ifndef PIMORONI_TRACKBALL_SCALE
 #    define PIMORONI_TRACKBALL_SCALE 5
 #endif
@@ -52,10 +49,10 @@ typedef struct {
     uint8_t click;
 } pimoroni_data_t;
 
-void         pimironi_trackball_device_init(void);
+void         pimoroni_trackball_device_init(void);
 void         pimoroni_trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white);
 int16_t      pimoroni_trackball_get_offsets(uint8_t negative_dir, uint8_t positive_dir, uint8_t scale);
 void         pimoroni_trackball_adapt_values(int8_t* mouse, int16_t* offset);
-float        pimoroni_trackball_get_precision(void);
-void         pimoroni_trackball_set_precision(float precision);
+uint16_t     pimoroni_trackball_get_cpi(void);
+void         pimoroni_trackball_set_cpi(uint16_t cpi);
 i2c_status_t read_pimoroni_trackball(pimoroni_data_t* data);