BMM150 not getting X Y Z values

RE: BMM150 not getting X Y Z values

Boopathi — Tue, 24 Mar 2020 06:49:19 GMT

yes sir

RE: BMM150 not getting X Y Z values

Jørgen Holmefjord — Tue, 24 Mar 2020 06:47:57 GMT

Please post a new ticket where you explain your issue in detail. We want to keep each ticket on topic for one specific issue.

RE: BMM150 not getting X Y Z values

Boopathi — Tue, 24 Mar 2020 05:53:39 GMT

I am too using the same BMM150 sensor, but my concern is different from yours as iam able to read the raw data from the sensor but my values are not correct.

RE: BMM150 not getting X Y Z values

Jørgen Holmefjord — Wed, 18 Mar 2020 13:46:43 GMT

Hi,

I would really recommend you to check the error codes from the TWI driver function calls, i.e. pass 'ret' to APP_ERROR_CHECK(). It is also not good practice to use delays between transfers when you run the driver in non-blocking mode. You should rather set a flag in the event handler and wait for this flag before proceeding with new transfers.

There is no delay between the calls to BMM150_write() inside BMM150_set_mode(), and you are not checking the return codes. Most likely, all these calls except the first one return NRF_ERROR_BUSY. This leads to the TWI sensor not being initialized correctly.

Best regards,
Jørgen