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

[mlefores]

Hello,

I am porting your library on my micro. What is the meaning exactly of BMA456h, an, w ? Is it part number of the device noticed on it ? I dont see any reference like this in the reference guide of the device.

Thanks in advance

Mickael

[BSTRobin · Accepted solution]

Hi mlefores,

BMA456 had different sensor API version on github: https://github.com/BoschSensortec/BMA456-Sensor-API. Different versions support different features, and the corresponding configuration file sizes are different, can be flexibly selected for different applications..
bma456h supported features: any motion, no motion, step detector, step counter, step activity, auto low power, tap, single tap, double tap, triple tap.
bma456w supported features: any motion, no motion, step detector, step counter, step activity, single tap, double tap.
bma456an supported features: any motion, no motion.

[mlefores]

Hello support,

I am still not able to use your device. I am facing strange problem on our custom hw design, after soft reset and wait 200ms, we have ERR_REG = 0x23 ... We are able to read temperature value but not able to have a positive result of selftest and its not possible to make a file config ...

Any idea ?

Thanks in advance

Mickael