error_t tcs34725GetSensorEvent(sensors_event_t *event)
{
float maxCount;
uint16_t r, g, b, c;
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _tcs34725SensorID;
event->type = SENSOR_TYPE_COLOR;
event->timestamp = delayGetTicks();
/* Get the raw RGB values */
ASSERT_STATUS(tcs34725GetRawData(&r, &g, &b, &c));
/* Convert RGB values to floats */
maxCount = (256 - _tcs34725IntegrationTime) * 1024;
event->color.r = r / maxCount;
event->color.g = g / maxCount;
event->color.b = b / maxCount;
/* Convert to a 24-bit ARGB value */
event->color.rgba = (uint8_t)(event->color.r * 0xFF) << 16|
(uint8_t)(event->color.g * 0xFF) << 8 |
(uint8_t)(event->color.b * 0xFF) |
0xFF000000;
return ERROR_NONE;
}
err_t tsl2561GetSensorEvent(sensors_event_t *event)
{
uint16_t broadband, ir;
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _tsl2561SensorID;
event->type = SENSOR_TYPE_LIGHT;
event->timestamp = delayGetTicks();
/* Calculate the actual lux value */
ASSERT_STATUS(tsl2561GetLuminosity(&broadband, &ir));
event->light = tsl2561CalculateLux(broadband, ir);
return ERROR_NONE;
}
error_t lsm303accelGetSensorEvent(sensors_event_t *event)
{
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _lsm303accelSensorID;
event->type = SENSOR_TYPE_ACCELEROMETER;
event->timestamp = delayGetTicks();
/* Convert units to m/s^2 */
ASSERT_STATUS(lsm303accelRead());
event->acceleration.x = _lsm303accelData.x * _lsm303accel_MG_LSB * SENSORS_GRAVITY_STANDARD;
event->acceleration.y = _lsm303accelData.y * _lsm303accel_MG_LSB * SENSORS_GRAVITY_STANDARD;
event->acceleration.z = _lsm303accelData.z * _lsm303accel_MG_LSB * SENSORS_GRAVITY_STANDARD;
return ERROR_NONE;
}
err_t lsm303magGetSensorEvent(sensors_event_t *event)
{
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _lsm303magSensorID;
event->type = SENSOR_TYPE_MAGNETIC_FIELD;
event->timestamp = delayGetTicks();
/* Convert units to micro-Tesla (1 Gauss = 1 micro-Tesla) */
ASSERT_STATUS(lsm303magRead());
event->magnetic.x = _lsm303magData.x / _lsm303mag_Gauss_LSB_XY * SENSORS_GAUSS_TO_MICROTESLA;
event->magnetic.y = _lsm303magData.y / _lsm303mag_Gauss_LSB_XY * SENSORS_GAUSS_TO_MICROTESLA;
event->magnetic.z = _lsm303magData.z / _lsm303mag_Gauss_LSB_Z * SENSORS_GAUSS_TO_MICROTESLA;
return ERROR_NONE;
}
error_t mpl115a2GetSensorEvent(sensors_event_t *event)
{
float pressure_kPa;
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _mpl115a2SensorID;
event->type = SENSOR_TYPE_PRESSURE;
event->timestamp = delayGetTicks();
/* Retrieve values from the sensor */
ASSERT_STATUS(mpl115a2GetPressure(&pressure_kPa));
/* The MPL115A2 returns a value from 50..115 kPa using a 10-bit range.
* To convert this to the hPa value sensor_event_t is expecitng simply
* multiply by 10. */
event->pressure = pressure_kPa * 10;
return ERROR_NONE;
}
err_t adxl345GetSensorEvent(sensors_event_t *event)
{
int16_t x, y, z;
/* Clear the event */
memset(event, 0, sizeof(sensors_event_t));
event->version = sizeof(sensors_event_t);
event->sensor_id = _adxl345SensorID;
event->type = SENSOR_TYPE_ACCELEROMETER;
event->timestamp = delayGetTicks();
/* Retrieve values from the sensor */
ASSERT_STATUS(adxl345GetXYZ(&x, &y, &z));
/* The ADXL345 returns a raw value where each lsb represents 4mg. To
* convert this to a normal g value, multiply by 0.004 and then convert
* it to the m/s^2 value that sensors_event_t is expecting. */
event->acceleration.x = x * ADXL345_MG2G_MULTIPLIER * SENSORS_GRAVITY_STANDARD;
event->acceleration.y = y * ADXL345_MG2G_MULTIPLIER * SENSORS_GRAVITY_STANDARD;
event->acceleration.z = z * ADXL345_MG2G_MULTIPLIER * SENSORS_GRAVITY_STANDARD;
return ERROR_NONE;
}
