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LIS3DE vs. LIS3DH HW FIFO Handling

Question asked by Martin Lampacher on Jun 11, 2018
Latest reply on Jun 19, 2018 by Martin Lampacher

Hello,

 

we've been using the LIS3DH on a development board and have switched to the LIS3DE for the prototype. We're using the HW fifo feature to batch-read values from the sensor. The LIS3DE is only 8-bit and thus I was expecting the HW fifo to only provide 8-bit values, but it seems like it is still sending 2 bytes per axis, is this correct?

 

The reason I'm asking is simply due to the fact that the _L and _H distinction does not exist on the LIS3DE, I'm always reading from register 0x29 (instead of 0x28) and read using auto-increment. In the received data every second value is zero and thus the values are actually signed 16 bit values?

 

What is the correct way to interpret the values? Attached: Buffer as read from LIS using HW fifo feature

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