diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/sensors/pimoroni_trackball.c | 22 | ||||
| -rw-r--r-- | drivers/sensors/pimoroni_trackball.h | 9 |
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); |