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non-os_oss
by 
Rikita YAMADA
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Introduction
Introduction¶
This wiki page describes setup AKM's sensor evaluation board om mbed enabled STM32F4 board.
Prerequisites¶
NUCLEO-F411RE ARM board.¶
Other board which has Arduino pins may be O.K.. For example, NUCLEO-F446RE, Intel edison board etc.
Arduino-Sensor-Evaluation board by AKM.¶
Digital IO pins with level-shifter. In case of NUCLEO board, digital signal level is 3.3v. But some sensors does not work with this level, because it is too high. So, this board converts digital I/O pins from 3.3v to 3.0v/1.8v. In addition to conversion, two regulators on this board supplies power for each sensors (150mA at maximum).
Magnetic sensor & Accelerometer¶
Arduino-Sensor-Evaluation board supports 3 sensors, magnetometer, accelerometer and gyroscope. But gyroscope is not supported by IAR_non-os software yet. The sensor must support 3.0v or 1.8v Vdd. Interface voltage level is common, so all sensors must use the same Vid level. For example, a magnetometer supports only 1.8v Vdd and Vid, other sensors must support 1.8v Vid. But please note that Vdd is separated, so other sensors don't need to support 1.8v Vdd if separate power source pin is available.
- AK0991X sensor board.
- ADXL34X sensor board.