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About lmills
since
02-28-2020
02-06-2021
lmills
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Solution
02-06-2021
03:55 AM
I'm not using the API, as nice as it looks it looks like it would be way more work to use, for this application, than to write things myself. Anyways I solved the issue, turns out im a moron and it was in 2s compliment. I need to use a signed int. Thanks, Luke
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02-05-2021
07:14 AM
Hi, I have set up the magnetometer as per secton 2.4.3.1.3 in the BMX160 datasheet. I am able to read consistent data from the DATA registers and convert that into MagX and MagY. However when I rotate the PCB, and graph some sample points, this is what I get. It looks like it is saturating very quickly. According to Table 4 of the datasheet the magnetic field range is +-1150uT. I compared with my phone to check the field in the area around the PCB and it is ~60uT, peaking at 140uT at the power supply 2ft away on the bench, either way it is well inside spec. I dont see any settings for the range like the ACC or GYRO have, and the offset is only to do with the time between triggering and reading. Am I missing something obvious? Is there a way to make this look more sinewavey? Thanks, Luke
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- BMX160 magnetometer
02-28-2020
07:15 PM
Hi, I'm looking to subsititute a BMI160 in a design for a BMX160 to take advantage of the built in magnetometer. 4 pins have different functionality in the pinout pins 2, 3, 10, and 11. 10 and 11 are now DNCs which is fine as they are already DNCs on my design. Pins 2 and 3 have changed from ASDx and ASCx to GND and GND. In my design these are DNCs as well and the GND on pins 6 and 7 are connected. I don't see an internal diagram showing if these grounds are connected internally or not, but I suspect given their pin description on page 101 of the datasheet that they are connected to both the analog and digital ground internally. Can anyone confirm? Thanks, Luke
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