LSM6DS33 -> Bulk read FIFO

[MKama.2]

Hello,

I am using the FIFO to read the gyroscope and accelerometer data from the LSM6DS33 using a Raspberry Pi. It is connected over I2C at a frequency of 400kHz. Currently it takes between 4-7 seconds of constant reading to empty out the FIFO and by then it's almost full again. Is there a way to do a bulk read of the FIFO rather than read each sensor reading separately?

Thanks,

Mahmoud

[TSand.1 · Accepted solution]

Hi, if you configure the LSM6DS33 in FIFO mode (i.e. the filling of the FIFO stops when the limit is reached), and you choose the ODR, it will take 1/ODR * FIFO size (8 kbyte) to fill the FIFO. You have to configure the FIFO_CTRL5 (0Ah) register, in FIFO mode, and you can program a custom FIFO threshold in FIFO_CTRL1 (06h) and FIFO_CTRL2 (07h).