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[Bug] Fix pmw33xx sensor corruption on get-cpi call (#23116)

pull/23119/head
Drashna Jaelre 2 months ago
committed by GitHub
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66780783c7
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    -0
      drivers/sensors/pmw3360.c

+ 3
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drivers/sensors/pmw3360.c View File

@ -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;
}


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