LSM6DSM

Requirements

• I2C

The LSM6DSM can operate in four modes. Only mode 1 (host <-> device) and communication over I2C will be described here.

Pins

• SDO: Sets the LSB of the device address
• CS: Sets communication mode (0=SPI, 1=I2C). Connect to VCC
• SCL: Serial clock, used for I2C. Connected to the μC SCL
• SDA: Serial data, used for I2C. Connected to the μC SCL

Registers

See Chapter 9 of the datasheet for the register mapping.

Common actions

Who am i

The device can be asked for its Who-Am-I value to make sure that I2C is working. The WAI register address is 0x0F and contains the value 0b01101010 or 0x6A.

To read the register, the master node must do the following:

• Send a SAD+R frame
• Send a DATA frame containing 0x0F or 0b00001111
• Receive one DATA frame containing 0x6A