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drivers: sensor: vl53l0x: Add private channels

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Added private channels for metadata associated with
distance measurement according to datasheet and API manual.

Signed-off-by: Michal Piekos <michal.piekos@wp.pl>
This commit is contained in:
Michal Piekos 2024-12-26 14:38:48 +01:00 • committed by Benjamin Cabé
commit d318726209
2 changed files with 71 additions and 0 deletions
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24
drivers/sensor/st/vl53l0x/vl53l0x.c
View file

@ -20,12 +20,16 @@
#include <zephyr/types.h>
#include <zephyr/device.h>
#include <zephyr/logging/log.h>
#include <zephyr/drivers/sensor/vl53l0x.h>
#include "vl53l0x_api.h"
#include "vl53l0x_platform.h"
LOG_MODULE_REGISTER(VL53L0X, CONFIG_SENSOR_LOG_LEVEL);
#define VL53L0X_FIXPOINT1616_SCALE_FACTOR (65536)
#define VL53L0X_SENSOR_CHANNEL_VAL2_FACTOR (1000000)
/* All the values used in this driver are coming from ST datasheet and examples.
* It can be found here:
* https://www.st.com/en/embedded-software/stsw-img005.html
@ -288,6 +292,26 @@ static int vl53l0x_channel_get(const struct device *dev,
} else if (chan == SENSOR_CHAN_DISTANCE) {
val->val1 = drv_data->RangingMeasurementData.RangeMilliMeter / 1000;
val->val2 = (drv_data->RangingMeasurementData.RangeMilliMeter % 1000) * 1000;
} else if ((enum sensor_channel_vl53l0x)chan ==
SENSOR_CHAN_VL53L0X_EFFECTIVE_SPAD_RTN_COUNT) {
val->val1 = drv_data->RangingMeasurementData.EffectiveSpadRtnCount / 256;
val->val2 = 0;
} else if ((enum sensor_channel_vl53l0x)chan == SENSOR_CHAN_VL53L0X_AMBIENT_RATE_RTN_CPS) {
val->val1 = (drv_data->RangingMeasurementData.AmbientRateRtnMegaCps >> 16) +
(((drv_data->RangingMeasurementData.AmbientRateRtnMegaCps & 0xFFFF) *
VL53L0X_SENSOR_CHANNEL_VAL2_FACTOR) / VL53L0X_FIXPOINT1616_SCALE_FACTOR);
val->val2 = 0;
} else if ((enum sensor_channel_vl53l0x)chan == SENSOR_CHAN_VL53L0X_SIGNAL_RATE_RTN_CPS) {
val->val1 = (drv_data->RangingMeasurementData.SignalRateRtnMegaCps >> 16) +
(((drv_data->RangingMeasurementData.SignalRateRtnMegaCps & 0xFFFF) *
VL53L0X_SENSOR_CHANNEL_VAL2_FACTOR) / VL53L0X_FIXPOINT1616_SCALE_FACTOR);
val->val2 = 0;
} else if ((enum sensor_channel_vl53l0x)chan == SENSOR_CHAN_VL53L0X_RANGE_DMAX) {
val->val1 = drv_data->RangingMeasurementData.RangeDMaxMilliMeter / 1000;
val->val2 = (drv_data->RangingMeasurementData.RangeDMaxMilliMeter % 1000) * 1000;
} else if ((enum sensor_channel_vl53l0x)chan == SENSOR_CHAN_VL53L0X_RANGE_STATUS) {
val->val1 = drv_data->RangingMeasurementData.RangeStatus;
val->val2 = 0;
} else {
return -ENOTSUP;
}

47
include/zephyr/drivers/sensor/vl53l0x.h Normal file
View file

@ -0,0 +1,47 @@
/*
* Copyright (c) 2024 Michal Piekos
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Custom channels and values for VL53L0X ToF Sensor
*
* These channels provide additional sensor data not covered by the standard
* Zephyr sensor channels. Application must include vl53l0x.h file to gain
* access to these channels.
*
* Example usage:
* @code{c}
* #include <zephyr/drivers/sensor/vl53l0x.h>
*
* if (sensor_channel_get(dev, SENSOR_CHAN_VL53L0X_RANGE_STATUS, &value)) {
* printk("Status: %d\n", value.val1);
* }
* @endcode
*/
#ifndef ZEPHYR_INCLUDE_DRIVERS_SENSOR_VL53L0X_H_
#define ZEPHYR_INCLUDE_DRIVERS_SENSOR_VL53L0X_H_
#include <zephyr/drivers/sensor.h>
/* VL53L0x specific channels */
enum sensor_channel_vl53l0x {
SENSOR_CHAN_VL53L0X_RANGE_DMAX = SENSOR_CHAN_PRIV_START,
SENSOR_CHAN_VL53L0X_SIGNAL_RATE_RTN_CPS,
SENSOR_CHAN_VL53L0X_AMBIENT_RATE_RTN_CPS,
SENSOR_CHAN_VL53L0X_EFFECTIVE_SPAD_RTN_COUNT,
SENSOR_CHAN_VL53L0X_RANGE_STATUS,
};
/* VL53L0x meas status values */
#define VL53L0X_RANGE_STATUS_RANGE_VALID (0)
#define VL53L0X_RANGE_STATUS_SIGMA_FAIL (1)
#define VL53L0X_RANGE_STATUS_SIGNAL_FAIL (2)
#define VL53L0X_RANGE_STATUS_MIN_RANGE_FAIL (3)
#define VL53L0X_RANGE_STATUS_PHASE_FAIL (4)
#define VL53L0X_RANGE_STATUS_HARDWARE_FAIL (5)
#define VL53L0X_RANGE_STATUS_NO_UPDATE (255)
#endif /* ZEPHYR_INCLUDE_DRIVERS_SENSOR_VL53L0X_H_ */