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Use correct angle tune range of +/-127 on PMW33XX (#17708)

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...partially reverts 580bcff4f6 as the
datasheet doesn't claim that the angle tuning as limited to +/- 30
degrees.
This commit is contained in:
Stefan Kerkmann 2022-07-17 21:08:55 +02:00 committed by GitHub
parent 4779539543
commit a304a9b51e
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3 changed files with 12 additions and 12 deletions
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18
docs/feature_pointing_device.md
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@ -176,15 +176,15 @@ The CPI range is 50-16000, in increments of 50. Defaults to 2000 CPI.
Both PMW 3360 and PMW 3389 are SPI driven optical sensors, that use a built in IR LED for surface tracking.
| Setting | Description | Default |
| ---------------------------- | ------------------------------------------------------------------------------------------ | ------------- |
| `PMW33XX_CS_PIN` | (Required) Sets the Cable Select pin connected to the sensor. | _not defined_ |
| `PMW33XX_CS_PINS` | (Alternative) Sets the Cable Select pins connected to multiple sensors. | _not defined_ |
| `PMW33XX_CPI` | (Optional) Sets counts per inch sensitivity of the sensor. | _varies_ |
| `PMW33XX_CLOCK_SPEED` | (Optional) Sets the clock speed that the sensor runs at. | `2000000` |
| `PMW33XX_SPI_DIVISOR` | (Optional) Sets the SPI Divisor used for SPI communication. | _varies_ |
| `PMW33XX_LIFTOFF_DISTANCE` | (Optional) Sets the lift off distance at run time | `0x02` |
| `ROTATIONAL_TRANSFORM_ANGLE` | (Optional) Allows for the sensor data to be rotated +/- 30 degrees directly in the sensor. | `0` |
| Setting | Description | Default |
| ---------------------------- | ------------------------------------------------------------------------------------------- | ------------- |
| `PMW33XX_CS_PIN` | (Required) Sets the Cable Select pin connected to the sensor. | _not defined_ |
| `PMW33XX_CS_PINS` | (Alternative) Sets the Cable Select pins connected to multiple sensors. | _not defined_ |
| `PMW33XX_CPI` | (Optional) Sets counts per inch sensitivity of the sensor. | _varies_ |
| `PMW33XX_CLOCK_SPEED` | (Optional) Sets the clock speed that the sensor runs at. | `2000000` |
| `PMW33XX_SPI_DIVISOR` | (Optional) Sets the SPI Divisor used for SPI communication. | _varies_ |
| `PMW33XX_LIFTOFF_DISTANCE` | (Optional) Sets the lift off distance at run time | `0x02` |
| `ROTATIONAL_TRANSFORM_ANGLE` | (Optional) Allows for the sensor data to be rotated +/- 127 degrees directly in the sensor. | `0` |
To use multiple sensors, instead of setting `PMW33XX_CS_PIN` you need to set `PMW33XX_CS_PINS` and also handle and merge the read from this sensor in user code.
Note that different (per sensor) values of CPI, speed liftoff, rotational angle or flipping of X/Y is not currently supported.

2
drivers/sensors/pmw33xx_common.c
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@ -166,7 +166,7 @@ bool pmw33xx_init(uint8_t sensor) {
wait_ms(1);
pmw33xx_write(sensor, REG_Config2, 0x00);
pmw33xx_write(sensor, REG_Angle_Tune, CONSTRAIN(ROTATIONAL_TRANSFORM_ANGLE, -30, 30));
pmw33xx_write(sensor, REG_Angle_Tune, CONSTRAIN(ROTATIONAL_TRANSFORM_ANGLE, -127, 127));
pmw33xx_write(sensor, REG_Lift_Config, PMW33XX_LIFTOFF_DISTANCE);
if (!pmw33xx_check_signature(sensor)) {

4
drivers/sensors/pmw33xx_common.h
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@ -59,8 +59,8 @@ _Static_assert(sizeof((pmw33xx_report_t){0}.motion) == 1, "pmw33xx_report_t.moti
# define ROTATIONAL_TRANSFORM_ANGLE 0x00
#endif
#if ROTATIONAL_TRANSFORM_ANGLE > 30 || ROTATIONAL_TRANSFORM_ANGLE < (-30)
# error ROTATIONAL_TRANSFORM_ANGLE has to be in the range of +/- 30 for all PMW33XX sensors.
#if ROTATIONAL_TRANSFORM_ANGLE > 127 || ROTATIONAL_TRANSFORM_ANGLE < (-127)
# error ROTATIONAL_TRANSFORM_ANGLE has to be in the range of +/- 127 for all PMW33XX sensors.
#endif
// Support single and plural spellings