RAK5205-WisTrio-LoRa :GPS ,BME680,LIS3DH,LoRaWAN1.0.2,ARM Cortex-M3 STM32L1
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README.md

RAK5205-WisTrio-LoRa

RAK5205-WisTrio-LoRa :GPS ,BME680,LIS3DH,LoRaWAN1.0.2,ARM Cortex-M3 STM32L1

RAK5205-WisTrio-LoRa firmware version 2.x.0.2
1.Fix "at+msg_confirm:x"was invalid bug.
2.Fix "at+set_config=pwr_level:x" was invalid bug.

RAK5205-WisTrio-LoRa firmware version 2.x.0.0
1.This Firmware is based on LoRaWAN 1.0.2 protocol ,support Class A and Class C mode.User could switch the mode by such as 'at+set_config=class:2' command,0:class A,1:class B(unsupported),2:class C.

 It supports almost all frequency bands:(HF)->EU868, US915, AU915, KR920, AS923,IN865. 
                                        (LF)->EU433,CN470.

2.The Firmware folder contains two firmware: "RAK5205_LF_trackerboard.bin"and"RAK5205_LF_trackerboard.bin".

 "RAK5205_HF_trackerboard.bin" surpport region:EU868, US915, AU915, KR920, AS923,IN865.    
 "RAK5205_LF_trackerboard.bin" surpport region:EU433,CN470.

Tips: Region switch by such as"at+band=EU868"command. AT command refer to RAK811 Lora AT Command V1.4.pdf.
3.Method of The Demo project generates different firmware refer to ReleaseNotes.txt.
4.the manual of RAK5205-WisTrio-LoRa refer to RAK5205_User_Manual_V1.2.pdf

Overview
The main features are listed below:
 Compatible with 96Boards IoT Edition Specification.
 With SX1276 LoRa long range and L76-L GPS modems which allow to enable the GPS low power mode.
 Integrated the ultra-low power microcontroller ARM Cortex-M3 STM32L1.
 Built-in environmental sensor BME680 (gas, pressure, humidity, temperature) and 3-axis MEMS sensor LIS3DH (accelerometer).
 SMA/IPEX antenna optional for LoRa and GPS.
 Supports latest LoRaWAN 1.0.2 protocol, activation by OTAA/ABP.
 Supports programmable bit rate up to 300kbps.
 Supports rechargeable battery through micro USB or 5V solar charging ports.
 Supports sleep mode, the power consumption down to 16μA.
 Supports global license-free ISM band (EU433, CN470, EU868, US915, AS923, AU915, KR920 and IN865).
 Supports I2C, GPIOs, UART and ADC interfaces

RAK5205 hardware specification: https://www.rakwireless.com/en/download/LoRa/WisTrio-LoRa-RAK5205#Hardware_Specification

BTW, there is a very interesting tutorial for RAK5205 Wistrio made by Manivannan Sadhasivam: https://github.com/Mani-Sadhasivam/zephyr/blob/96b_wistrio/boards/arm/96b_wistrio/doc/96b_wistrio.rst