LSM6DSOX FIFO

[whaz]

Hello,

my question applies to both the LSM6DSO and LSM6DSOX FIFO. 

if I am enabling the gyro and accel both at the same ODR and also enabling timestamp, I want to know what gets written into the FIFO first. I know I can use the tag register to tell me what that "word" is, but I want to ensure that the sequence the data is written/read from the FIFO will always be the same for a given ODR.I am not locally processing the sensor data but transferring it for processing and I want to minimize the length of my packet if I can guarantee the sequence will always be the same. any help if greatly appreciated.

Regards,

[Federica Bossi]

Hi @whaz ,

Welcome to ST Community!

It is not possible to know which data arrives first, which is why there is the tag register.

[whaz]

Hello,

Thank you for your response. but can you tell me why is it that I always get the gyro data first?

Thanks

[Federica Bossi]

Hi @whaz ,

By design you have first gyro data and then accelerometer.

[whaz]

Hi Federica,

I am sorry to be a little confused. but if by design, the gyro data comes in first, why do you say "It is not possible to know which data arrives first".

Regards,

[Federica Bossi]

Hi @whaz ,

I didn't understand you wanted to know whether you get gyroscope or accelerometer data first. I confirm that you always get the gyro first and then the accelerometer.