How to interface LP22HB in SPI?

[william.le-coz]

I'm using with cubemx the additional sotfware X-CUBE_MEMS1 with Terminal data logger and chose the mems LP22HB on a nucleo F401RE.

When I do it in I2C it's working fine.

No I configure the LP22HB in SPI with CS on GND. And connect for SPI. I configurate the SPI1 with pull-up on SCL,Clock Polarity HIGH,Clock phase 2 Edge, prescaler 32.

But no communication!

I see the clock at the beggining but nothing on MOSI or MISO on a scope.

I join the project!

Can you help me

[Eleon BORLINI]

Hi @william.le-coz​ , but is your CS fixed to GND? Please note that for the SPI communication, the transition high to low of the CS pin is required.

Regards

[william.le-coz]

Thanks, it's working now 😊 !

I use CS with pull-up and MISO and MOSI with Pull-down.