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LSM9DS1 on single SPI bus with other devices

Question asked by Tomas Hamouz on Feb 15, 2018
Latest reply on Feb 16, 2018 by Miroslav B

We need to share one SPI bus with LSM9DS1 and other devices. The problem is that when the CS signal is inactive, the chip expect I2C communication on MOSI/SDA line. What happens if there is a communication with other SPI device and CS signal is inactive? Does the chip recognize it is not I2C communication and remains silent or it starts to meddle into?

 

I know the I2C interface can be disabled in the registers, but to disable it I first need to communicate with both  interfaces active.

 

Tomas

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