RAK3272S Breakout Board AT Command Manual
Introduction
RAK3272S Breakout Board is based on STM32WLE5CC chip. It is designed to simplify LoRaWAN and LoRa point-to-point (P2P) communication. To integrate LoRa technology into your projects, RAK3272S is implemented with an easy-to-use UART communication interface, where you can send AT commands. Through these AT commands, you can set the parameters needed for LoRa P2P and LoRaWAN communication. You can also use any microcontroller with a UART interface to control the RAK3272S board.If the host microcontroller code
The UART serial communication is exposed on the UART2 (also identified as LPUART1 port), through Pin 7 (TX2) and Pin 8 (RX2). The default parameters of the UART2 communication are 115200 / 8-N-1. The firmware upgrade is also possible through this port. To get familiar with the pin distribution of this module and find a schematic circuit of a reference application, refer to the RAK3272S Breakout Board Datasheet.
AT Commands List
There are two AT Commands set for RAK3272S depending on the firmware uploaded on the device.
In addition, aside on UART2 pins, AT commands can also be interfaced via UART1_TX Pin 5 and UART1_RX Pin 6 on J5 Header. You can configure the settings of UART1 interfaces via RUI3 Serial Operating Modes.
- There are RAK3172 devices loaded with old firmware versions which are not based on RUI3 (RAKwireless Unified Interface V3). These devices have v1.0.4 and below.
- If the host microcontroller code is based on this old firmware, the RAK3172 AT Command migration guide explains in detail the few differences between the two AT commands set.
