NXP has a development board which  they call "The LPCXpresso54102 Sensor Processing/Motion Solution".

The OM13078 Development Board comes with a mezzanine board called the " Sensor Shield Board (SSB)", plus application software and sensor fusion software from Bosch Sensortec. 

Supported by NXP Sensor Framework and Bosch Sensortec BSXlite sensor fusion library, available
for free download at www.lpcware.com (subject to license terms and conditions).

The board is a little large as is typical for development boards, but will fit in all but the smallest models.

The price is right at $130 from Digikey or Newark.

It looks like a good system to develop from, any comments from the pros?

Following is some data from NXP.

The Sensor Sheild comes with:
Bosch Sensortec sensors:
 BMI055 inertial measurement unit
 BMC150 digital compass
 BMM150 magnetometer
 BMP280 pressure/humidity sensor
Murata pressure sensor
MAX44000 ambient light and proximity sensor
Ack.me AMS0002 Bluetooth LE module
IR remote control driver
Dual Knowles digital microphones
Headers for easy prototyping of additional SPI and I2C sensors

Low-Power Architecture
The LPC54100 series is architected for high-power efficiency. In addition to the dual-core low-power advantage, the low-power interfaces can wake the CPU from power-down once data is received. The 12-bit, 12-channel ADC delivers 4.8 Msps operation at full spec, including 1.62 V, which perform conversions while the CPU is asleep. The low-power Flash is writable at 1.62 V. Core and peripheral voltages are automatically scaled for reduced power consumption at any frequency. An asynchronous peripheral bus reduces peripheral clock speed without affecting the CPU clock, which minimizes peripheral power consumption.

Features
  • 100 MHz, 32-bit ARM® Cortex™-M4F
  • 100 MHz, 32-bit ARM Cortex-M0+ coprocessor (optional)
  • Up to 512 KB on-chip Flash
  • Up to 104 KB internal RAM
  • Low-power consumption
    • 3 µA continuous sensor listening (power-down with RAM retention)
    • Scalable active power/performance technology: Cortex-M0+ (55 µA/MHz) or Cortex-M4F (100 µA/MHz)
    • Four low-power modes and power profiles
  • Low-power serial interfaces:
    • 3 fast-mode plus I²C, 4 UART, 2 SPI, 39 GPIO
  • 5-clock sources
    • IRC, digital clock input, PLL, 32 kHz XTAL, WWDT
 
  • Standard and advanced timers
    • Five 32-bit general-purpose timers/counters
    • One-state configurable timer/PWM
    • RTC with alarm
    • WWDT
  • Analog
    • ADC with up to 12-channels, 12 bits, and 4.8 Msps sample rate, full-spec (1.62 V to 3.6 V)
  • 22-channel DMA with 20-programmable triggers

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