Deciphering the LSM9DS1 LPF2 gyro output as shown in Figure 28 (CTRL_REG2_G).

[Sam1]

On page 47 (DocID025715 Rev 3) we're trying to figure out how the OUT_SEL bites are supposed to be set if we wan't the LPF2 enabled. We're reading it continuously, no interrupts. HPF is not used, yet. A clarification would be great of how the chart is meant to be read.

This is how we interpret it now:

   0b00, LPF2 Off, HPF off.

   0b01, HPF on and LPF2 off? (What happens when HPF is off?)

   0b10, HPF off LPF2 on? This is what we seem to get some results with.

   0b11, HPF on and LPF2 on?

[Miroslav BATEK · Accepted solution]

The settings doesn't mean if the filter is on or off, but it defines the signal path.

0b00: LPF1 -> Data registers / FIFO

0b01: LPF1 -> HPF -> Data registers / FIFO

0b10, 0b11: LPF1 -> HPF (if HP_EN = 1)/Direct (if (HP_EN = 0) -> LPF2 -> Data registers / FIFO