diff options
| author | Nick Brassel <nick@tzarc.org> | 2024-02-28 21:47:37 +1100 |
|---|---|---|
| committer | Nick Brassel <nick@tzarc.org> | 2024-02-28 21:47:37 +1100 |
| commit | 4e369d405af6bba1adce6337b2e1b1ea1788566c (patch) | |
| tree | b0f020feff1809e37c9e7795d344929ff0bb290a /drivers/sensors/pmw3360.c | |
| parent | 4e04da397ef643f8fcf4afbe1d19f63aee1fc561 (diff) | |
| parent | dd1706e468bb18dd7f7ae143de735a5d3be1bfb8 (diff) | |
Merge branch 'develop'
Diffstat (limited to 'drivers/sensors/pmw3360.c')
| -rw-r--r-- | drivers/sensors/pmw3360.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/sensors/pmw3360.c b/drivers/sensors/pmw3360.c index a7dc687f50..8408daa945 100644 --- a/drivers/sensors/pmw3360.c +++ b/drivers/sensors/pmw3360.c @@ -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; } |