BMI270 Initialization Support Required

Hello all,

I am currently integrating a BMI270 in my embedded system.

I have a correct SPI communication and I am able to read the CHIP ID (reg 0x00) with value 0x24.

I am following this sequence:

1. Readi CHIP-ID

2. SW_Reset

3. 10ms delay

4. Write 0x02 to 0x7C register

5. 10ms delay

6. Write 0x00 to 0x59 register

   1. In this step if I read the register 0x7C I see 0x03 and not 0x02

7. I write the config file 2 bytes at a time.

   1. If after writing I read any of the registers (0x5B, 0x5C 0r 0x5E) I get always the same value and not related with the one I just wrote.

8. Write 1 to 0x59 register

   1. If I read the 0x59 register with or without delay, never holds the value of 1.

9. Write 0x03 to 0x7C to enable power save mode

10. If I read 0x21 I get the value 0x00.

I have the impression that some registers are not doing what they should. In the SPI trace with an oscilloscope everything seems ok and I can still read CHIP-ID.

Do you have an idea on how I can further see why I am not able to initialize the sensor?

Thank you in advance.