GPACERS LORA MODULE USER GUIDE MODEL: GPM-RF2021 VERSION : V2021.
TABLE OF CONTENTS PREFACE CHAPTER 1. INTRODUCTION 1.1 OVERVIEW 1.2 FEATURES 1.3 TECHNICAL SPECIFICATION CHAPTER 2. HARDWARE DESCRIPTION 2-1 BLOCK DIAGRAM 2.2 FRONTSIDE OF BOARD 2.3 BACKSIDE OF BOARD CHAPTER 3. METHOD OF OPERATION 3.1 PIN MAPPING BETWEEN MCU AND LORA TRANSCEIVER 3.2 PIN MAPPING BETWEEN MCU AND CONNECTORS 3.3 POWER ON THE MCU AND LORA TRANSCEIVER 3.
PREFACE IMPORTANT NOTES Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications.
FCC WARNING FCC 15b devices (15.105) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
FCC WARNING LABEL OF THE END PRODUCT: THE END PRODUCT MUST BE LABELED IN A VISIBLE AREA WITH THE FOLLOWING " Contains FCC ID: 2ARB9-GPMRF2021 ". THE FOLLOWING FCC PART 15.19 STATEMENT MUST ALSO BE AVAILABLE ON THE LABEL: THIS DEVICE COMPLIES WITH PART 15 OF FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
Chapter 1. Introduction 1.1 OVERVIEW The Gpacers LoRa module is a Low-Power Long Range LoRa Technology Transceiver Module, need to build-up the MCU firmware before use.
CHAPTER 2. HARDWARE DESCRIPTION 2.
2.2 FRONTSIDE OF BOARD The frontside of board shown in Figure 2-2 contains RF and MCU_POWER block, provides 6 connectors, 52 pins in total, 1 RF antenna and a set of 5xDebug pins.
2.3 BACKSIDE OF BOARD The backside of board shown in Figure 2-3 supports using external magnets for ON/OFF control of power supply and application functions control. .
Chapter 3. Method of operation 3.1 PIN MAPPING BETWEEN MCU AND LORA TRANSCEIVER The module contains MCU ATSAMD20J18A to control Lora transceiver SX1276, LNA Qorvo SPF5043Z and PA Qorvo RFPA0133. The pin to pin mapping is shown as Table 3-1, Table 3-2 and Table 3-3.
3.2 PIN MAPPING BETWEEN MCU AND CONNECTORS There are 52 pins of 6 connectors shown in Figure 2-2. 22 of the 52 pins configured by firmware of MCU can be used for high/low output to control the receiver, LNA, transmitter, PA functions , or converted into serial USART/SPI/I2C control signals to communicate with different peripheral devices to be integrated in user's system, such as: OLED, GPS module, LED, Wi-Fi module... Etc.
3.3 POWER ON THE MCU AND LORA TRANCEIVER There are two ways to power on the MCU and Lora transceiver. After feed in 3.3~5V DC battery power to the pin V_IN and (1) place a magnet on Hall Switch-1 or (2) pull up pin 3V3_EN_1 to VIH(2.5~4.2V). When the MCU is powered on, the power output pin VCC_P3V3 will be activated as well. Table 3-5 specifies the technical maximum ratings of above operations. Pin Name Max Typical Min Unit 5 4.2 3.3 V High magnetic threshold operate point ±1.5 ±3 ±4.
3.4 USING HALL SWITCH AS EXTERNAL FUNCTION CONTROL The Module adopts TI Hall switch drv5032, which can switch MCU I/O pin high/low status and power ON/OFF function with magnet. Hall switch Type Function Hall Switch-1 IN After feed in 3.3~5V DC battery power to the pin V_IN and (1) place a magnet on Hall Switch-1 or (2) pull up pin 3V3_EN_1 to VIH, pin VCC_P3V3 will output 3.3V DC power.
