BMA456 nothing happened with ASIC

[mlefores]

Hello support,

I am trying to make a BMA456 work at minimum through SPI bus. I send this list of command :

write 0xb6 in 0x7e
wait 500 ms

write 0x04 in 0x7d -> value check in the register OK

read 0x00 => return 0x16

write 0x00 in 0x41 => value check in the register OK

write 0x17 in 0x40 => value check in the register OK

I consult regularely :

register status 0x03 => always 0

register internal status 0x2a => always 0

What I missed in the configuration boar basic utilisation ? What I can check more ?

Thanks in advance

Mickael

[BSTRobin]

Hi mlefores,

You could refer BMA456 example code on github: https://github.com/BoschSensortec/BMA456-Sensor-API

[mlefores]

Hello,

Thats what I did thanks a lot. I took exemple accelero, I see file loading procedure, is there any mode that doesnt need it ?

Mickael

[BSTRobin]

Hi mlefores,

The configuration file must be loaded. The sensor API is written according to the data sheet, which has been verified and can be quickly migrated to different host platforms.

[ELJAY]

Hello mlefores,

also have a look at my guide for the BMA490L:
https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BMA490L-questions/td-p/22659

The new 400-series motion sensors are utterly painful to work with and the features in the data sheets are poorly described.

Also, in comparision to the old sensor BMA280 they lost 2 important features:
1.) a useful offset register with values up to +/-1g (new 400-series sensors have 0,5g limit -> on planet earth we usually have up to 1g static offset, so why limit at 0,5g?!)
2.) high-pass filter to exclude static 1g from planet earth from measurements

Kind regards

ELJAY