|
|
@ -15,6 +15,9 @@ uint16_t pmw33xx_get_cpi(uint8_t sensor) { |
|
|
|
} |
|
|
|
|
|
|
|
uint8_t cpival = pmw33xx_read(sensor, REG_Config1); |
|
|
|
// In some cases (100, 900, 1700, 2500), reading the CPI corrupts the firmware and the sensor stops responding. |
|
|
|
// To avoid this, we write the value back to the sensor, which seems to prevent the corruption. |
|
|
|
pmw33xx_write(sensor, REG_Config1, cpival); |
|
|
|
return (uint16_t)((cpival + 1) & 0xFF) * PMW33XX_CPI_STEP; |
|
|
|
} |
|
|
|
|
|
|
|