/ _____)             _              | |    
( (____  _____ ____ _| |_ _____  ____| |__  
 \____ \| ___ |    (_   _) ___ |/ ___)  _ \ 
 _____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
  (C)2017 Semtech-Cycleo

1. Components

This directory contains the sources code of the Keil project to build a Picocell Gateway MCU firmware based on the Semtech LoRa Picocell Gateway reference design. The target MCU is a STM32F401CD. The firmware implements an USB CDC protocol to bridge commands coming from host to the SX1308 SPI interface. The embedded firmware takes in charge the power management of the SX1308 during the downlink to respect the 500MA max power constraint in the USB plug.

((( Y )))
	|
	|
+- -|- - - - - - - - - - - - -+        xxxxxxxxxxxx          +--------+
|+--+-----------+     +------+|       xxx         xxx        |        |
||              |     |      ||      xx  Internet   xx       |        |
|| Pico Cell GW |<----+ Host |<-----xx     or       xx------>|        |
|| STM32F401CD  | USB |      ||      xx  Intranet   xx       | Server |
||   Sx1308     |     +------+|       xxx         xxx        |        |
||  2*SX1257    |      Linux  |        xxxxxxxxxxxx          |        |
|+--------------+             |                              |        |
|                             |                              +--------+
|                             |
+- - - - - - - - - - - - - - -+

The MAIN/ directory contains the main program that runs on the MCU, which launches the USB command interpreters to communicate with the Host.

The CmdUSB/ directory contains the USB command interpreter to handle the communication between the Host and the concentrator. It is a bridge to the HAL which communicates with the SX1308 through SPI.

The STM32 USB CDC library modified for this reference design.

The LoRa concentrator Hardware Abstraction Layer C library to configure the hardware, send and receive packets.

2. Precompiled binaries

The bin/ directory contains the precompiled binary files in .hex or .dfu formats. To load the binary file into the STM32F401CD target Mcu, use a tool like DFU-UTIL : http://dfu-util.sourceforge.net/

3. Changelog

• Initial release

4. Legal notice

The information presented in this project documentation does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range.

SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER'S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise.

EOF