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  Zolertia RE-Mote platform
  ============================================
  
  <a href="url"><img src="http://goo.gl/3AGZkI" align="center" height="320" ></a>
  
  The RE-Mote platform (prototype A) is a IoT Hardware development platform based
  on TI's CC2538 system on chip (SoC), featuring an ARM Cortex-M3 with 512KB
  flash, 32Kb RAM, double RF interface, and the following goodies:
  
  * ISM 2.4-GHz IEEE 802.15.4 & Zigbee compliant.
  * ISM 868-, 915-, 920-, 950-MHz ISM/SRD Band.
  * AES-128/256, SHA2 Hardware Encryption Engine.
  * ECC-128/256, RSA Hardware Acceleration Engine for Secure Key Exchange.
  * Power consumption down to 3uA using our shutdown mode.
  * Co-Processor to allow peripheral management, programming over BSL without requiring to press any button to enter bootloader mode.
  * Built-in battery charger (500mA), Energy Harvesting and Solar Panels to be connected to standards LiPo batteries.
  * Power input with wide range 2-26VDC.
  * Built-in TMP102 temperature sensor
  * Small form-factor (as the Z1 mote, half the size of an Arduino) 57x35 mm.
  
  This version was the first RE-Mote prototype, available to select users and beta
  testers.  A commercially available new model (namely the Revision A) is also
  ported to RIOT.
  
  Port Features
  =============
  In terms of hardware support, the following drivers have been implemented:
  
    * CC2538 System-on-Chip:
      * UART
      * Random number generator
      * Low Power Modes
      * General-Purpose Timers.
      * ADC
      * LEDs
      * Buttons
      * Internal/external 2.4GHz antenna switch controllable by SW
      * RF 2.4GHz built-in in CC2538
  
  And under work or pending at cc2538 base cpu:
  
      * Built-in core temperature and battery sensor.
      * TMP102 temperature sensor driver.
      * CC1120 sub-1GHz radio interface.
      * Micro-SD external storage.
      * USB (in CDC-ACM).
      * uDMA Controller.
  
  Requirements
  ============
  
   * Toolchain to compile RIOT for the CC2538
   * Drivers to enable your host to communicate with the platform
   * Built-in BSL programming over USB using cc2538-bsl (included)
  
  
  Install a Toolchain
  -------------------
  The toolchain used to build is arm-gcc, to check if it is currently installed run:
  
      $ arm-none-eabi-gcc -v
      Using built-in specs.
      Target: arm-none-eabi
      Configured with: /scratch/julian/lite-respin/eabi/src/gcc-4.3/configure
      ...
      (skip)
      ...
      Thread model: single
      gcc version 4.3.2 (Sourcery G++ Lite 2008q3-66)
  
  Else install from <https://launchpad.net/gcc-arm-embedded>
  
  
  Drivers
  -------
  The Re-Mote features a FTDI serial-to-USB module, the driver is commonly found in most OS, but if required it can be downloaded
  from <http://www.ftdichip.com/Drivers/VCP.htm>
  
  
  ### For the CC2538EM (USB CDC-ACM)
  The Re-Mote has built-in support for USB 2.0 USB, Vendor and Product IDs are the following:
  
    * VID 0x0451
    * PID 0x16C8
  
  On Linux and OS X this is straightforward, on windows you need to install the following driver:
  
  <https://github.com/alignan/lufa/blob/remote-zongle/LUFA/CodeTemplates/WindowsINF/LUFA%20CDC-ACM.inf>
  
  And replace the IDs accordingly.
  
  ### Device Enumerations
  For the UART, serial line settings are 115200 8N1, no flow control.
  
  Once all drivers have been installed correctly:
  
  On windows, devices will appear as a virtual `COM` port.
  
  On Linux and OS X, devices will appear under `/dev/`.
  
  On OS X:
  
  * XDS backchannel: `tty.usbserial-<serial number>`
  * EM in CDC-ACM: `tty.usbmodemf<X><ABC>` (X a letter, ABC a number e.g. `tty.usbmodemfd121`)
  
  On Linux:
  
  * Re-Mote over FTDI: `ttyUSB1`
  * Re-Mote over USB driver (in CDC-ACM): `ttyACMn` (n=0, 1, ....)
  
  More Reading
  ============
  2. [CC2538 System-on-Chip Solution for 2.4-GHz IEEE 802.15.4 and ZigBee applications (SWRU319B)][cc2538]
  3. [CC1120 sub-1GHz RF transceiver][cc1120]
  
  [cc1120]: http://www.ti.com/cc1120 "CC1120"
  [cc2538]: http://www.ti.com/product/cc2538     "CC2538"