LSM6DSV16X Sensor Fusion Reset

[FKara.3]

Hello,

how can I reset FIFO_Get_Rotation_Vector in LSM6DSV16x sensor?

Regards,

Fehmi.

[Federica Bossi · Accepted solution]

Ciao @FKara.3 ,

Can you write me the register name and the bit you are referring to?

Thanks

[FKara.3]

Ciao @Federica Bossi ,

/*
@file LSM6DSV16X_Sensor_Fusion.ino
@author STMicroelectronics
@brief Example to use the LSM6DSV16X library with Sensor Fusion Low Power.
*******************************************************************************
Copyright (c) 2022, STMicroelectronics
All rights reserved.

This software component is licensed by ST under BSD 3-Clause license,
the "License"; You may not use this file except in compliance with the
License. You may obtain a copy of the License at:
opensource.org/licenses/BSD-3-Clause

*******************************************************************************
*/
#include <LSM6DSV16XSensor.h>

#define ALGO_FREQ 120U /* Algorithm frequency 120Hz */
#define ALGO_PERIOD (1000U / ALGO_FREQ) /* Algorithm period [ms] */
unsigned long startTime, elapsedTime;

LSM6DSV16XSensor AccGyr(&Wire);
uint8_t status = 0;
uint8_t tag = 0;
float quaternions[4]={0};

void setup() {

Serial.begin(115200);
while (!Serial) yield();

Wire.begin();
// Initialize LSM6DSV16X.
AccGyr.begin();

// Enable Sensor Fusion
status |= AccGyr.Enable_Rotation_Vector();

if(status != LSM6DSV16X_OK) {
Serial.println("LSM6DSV16X Sensor failed to init/configure");
while(1);
}
Serial.println("LSM6DSV16X SFLP Demo");
}

void loop() {
uint16_t fifo_samples;
// Get start time of loop cycle
startTime = millis();
// Check the number of samples inside FIFO
if(AccGyr.FIFO_Get_Num_Samples(&fifo_samples) != LSM6DSV16X_OK){
Serial.println("LSM6DSV16X Sensor failed to get number of samples inside FIFO");
while(1);
}

// Read the FIFO if there is one stored sample
if (fifo_samples > 0) {
for (int i = 0; i < fifo_samples; i++) {
AccGyr.FIFO_Get_Tag(&tag);
if(tag==0x13u){
AccGyr.FIFO_Get_Rotation_Vector(&quaternions[0]);

// Print Quaternion data
Serial.print("Quaternion: ");
Serial.print(quaternions[3], 4);
Serial.print(", ");
Serial.print(-quaternions[1], 4);
Serial.print(", ");
Serial.print(quaternions[0], 4);
Serial.print(", ");
Serial.println(quaternions[2], 4);

// Compute the elapsed time within loop cycle and wait
elapsedTime = millis() - startTime;
delay(ALGO_PERIOD - elapsedTime);
}
}
}
}


Previously, I was reading quaternion values from FIFO but now I can't because fifo_samples shows 0.

Regards,

Fehmi