X-NUCLEO-IKS02A1: MEMS Inertial and Environmental Multi sensor shield
Overview
The X-NUCLEO-IKS02A1 is a motion MEMS expansion board for the STM32 Nucleo, fitting the requirements of industrial applications. It is equipped with Arduino UNO R3 connector layout, and is designed around the ISM330DHCX 3-axis accelerometer and 3-axis gyroscope, the IIS2MDC 3-axis magnetometer, the IIS2DLPC 3-axis accelerometer and the IMP34DT05 digital microphone.
The X-NUCLEO-IKS02A1 interfaces with the STM32 microcontroller via the I2C pin, and it is possible to change the default I2C port.
More information about the board can be found at the X-NUCLEO-IKS02A1 website [1].
Hardware Description
X-NUCLEO-IKS02A1 provides the following key features:
ISM330DHCX MEMS 3D accelerometer (±2/±4/±8/±16 g) and 3D gyroscope (±125/±250/±500/±1000/±2000 dps)
IIS2MDC MEMS 3D magnetometer (±50 gauss)
IIS2DLPC MEMS 3D accelerometer low power (±2/±4/±8/±16 g)
IMP34DT05 MEMS digital omnidirectional microphone (-26 dBFS, ±3 dB sensitivity)
DIL24 socket for additional MEMS adapters and other sensors (configurable in I2C or SPI)
I2C sensor hub features on ISM330DHCX available
Compatible with STM32 Nucleo boards
Equipped with Arduino UNO R3 connector
RoHS compliant
WEEE compliant
Hardware Configuration
X-NUCLEO-IKS02A1 board connects the various devices on two separate I2C bus:
IIS2DLPC and ISM330DHCX are on I2C2
IIS2MDC is on I2C1
X-NUCLEO-IKS02A1 board can be configured in two different hardware modes, Mode 1 and Mode 2, using the JP7/JP8 jumpers to modify to what the I2C1 bus connects to.
Mode 1: Standard Mode
In standard I2C mode the two buses are connected together. As a consequence, all devices on the shield reside on the same I2C bus and are accessible from the main board mcu.
The jumper configuration to activate this mode is:
JP7 => 1-2, 3-4 (I2C1 = I2C2, I2Cx=GND)
JP8 => 1-2, 3-4 (I2C1 = I2C2, I2Cx=GND)
Mode 2: SensorHub Mode
In SensorHub mode ISM330DHCX and IIS2DLPC are connected to I2C2 and are accessible from the main board mcu. Instead, the IIS2MDC device is connected only to ISM330DHCX sensor through its SCx/SDX (I2Cx) pins.
The jumper configuration to activate this mode is:
JP7 => 2-3 (I2C1 = I2Cx)
JP8 => 2-3 (I2C1 = I2Cx)
More information about X-NUCLEO-IKS02A1 configuration modes can be found in the X-NUCLEO-IKS02A1 user manual [2]
Programming
Three samples are provided as examples for x-nucleo-iks02a1 shield:
X-NUCLEO-IKS02A1 shield - Standard (Mode 1) application, to be used when the shield is configured in Standard Mode
X-NUCLEO-IKS02A1 shield - SensorHub (Mode 2) application, to be used when the shield is configured in SensorHub Mode
X-NUCLEO-IKS02A1 shield - MEMS microphone application, to be used to acquire data through the on-board PDM microphone
See also Shields for more details.