Long-range and low power data transmission for remote projects.
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$2.50
Restrictions apply to this RF Equipment for use in Australia:
For use in other locations around the world:
A declaration of use will need to be submitted during checkout.
The Makerverse LoRa-E5 Breakout is a compact LoRa radio, ready to bring long-range data transmission to your project.
Connect it to your microcontroller via UART or program it directly using STM32Cube. The LoRa-E5 Breakout provides labelled breakouts, RESET and BOOT buttons, and comes packaged with headers to get you started quickly. Power the Breakout directly from 3.3V or use the on-board regulator and power with up to 5.5V.
There are two ways to connect an antenna: Use the uFL connector to connect directly to an antenna or patch-lead; or bring-your-own SMA connector and resolder the antenna jumper resistor.
The Makerverse LoRa-E5 Breakout relies on a LoRa-E5 STM32WLE5JC Module, which is an FCC- and CE-certified module that combines a LoRa radio and microcontroller. It is powered by an ARM Cortex-M4 and Semtech SX126X LoRa chip, and supports LoRaWAN frequency bands worldwide with (G)FSK, BPSK, (G)MSK, and LoRa modulations.
The following script has been tested with a Raspberry Pi Pico. It joins The Things Network (TTN) and publishes some test data. Read the AT Command Specification to learn more.
# Connect to The Things Network (TTN) and publish some test data # # How to get started: # • Create an account on cloud.thethings.network # • Create an application # • Run this script to get the JoinEUI and DeviceEUI # • On your applicaiton, generate an AppKey and paste it as a string in the code below. # • Run this script again # • Monitor your applicaiton console and look for a test message being received on TTN # # This demo is based off the Getting Started Guide by seeedstudio: # https://wiki.seeedstudio.com/LoRa-E5_STM32WLE5JC_Module/#getting-started # # Refer to the AT Command Specification # https://core-electronics.com.au/attachments/uploads/lora-e5-at-command-specification-v1.0.pdf # Put your key here (string). This should match the AppKey generated by your application. #For example: app_key = 'E08B834FB0866939FC94CDCC15D0A0BE' app_key = 'None' # Regional LoRaWAN settings. You may need to modify these depending on your region. # If you are using AU915: Australia band='AU915' channels='8-15' DR='0' # If you are using US915 # band='US915' # channels='8-15' # DR='1' # # If you are using EU868 # band='EU868' # channels='0-2' # DR='0' from machine import UART, Pin from utime import sleep_ms from sys import exit uart1 = UART(1, baudrate=9600, tx=Pin(4), rx=Pin(5)) join_EUI = None # These are populated by this script device_EUI = None ### Function Definitions def receive_uart(): '''Polls the uart until all data is dequeued''' rxData=bytes() while uart1.any()>0: rxData += uart1.read(1) sleep_ms(2) return rxData.decode('utf-8') def send_AT(command): '''Wraps the "command" string with AT+ and \r\n''' buffer = 'AT' + command + '\r\n' uart1.write(buffer) sleep_ms(300) def test_uart_connection(): '''Checks for good UART connection by querying the LoRa-E5 module with a test command''' send_AT('') # empty at command will query status data = receive_uart() if data == '+AT: OK\r\n' : print('LoRa radio is ready\n') else: print('No LoRa-E5 detected\n') exit() def get_eui_from_radio(): '''Reads both the DeviceEUI and JoinEUI from the device''' send_AT('+ID=DevEui') data = receive_uart() device_EUI = data.split()[2] send_AT('+ID=AppEui') data = receive_uart() join_EUI = data.split()[2] print(f'JoinEUI: {join_EUI}\n DevEUI: {device_EUI}') def set_app_key(app_key): if app_key is None or app_key == 'None': print('\nGenerate an AppKey on cloud.thethings.network and enter it at the top of this script to proceed') exit() send_AT('+KEY=APPKEY,"' + app_key + '"') receive_uart() print(f' AppKey: {app_key}\n') def configure_regional_settings(band=None, DR='0', channels=None): ''' Configure band and channel settings''' send_AT('+DR=' + band) send_AT('+DR=' + DR) send_AT('+CH=NUM,' + channels) send_AT('+MODE=LWOTAA') receive_uart() # flush send_AT('+DR') data = receive_uart() print(data) def join_the_things_network(): '''Connect to The Things Network. Exit on failure''' send_AT('+JOIN') data = receive_uart() print(data) status = 'not connected' while status == 'not connected': data = receive_uart() if len(data) > 0: print(data) if 'joined' in data.split(): status = 'connected' if 'failed' in data.split(): print('Join Failed') exit() sleep_ms(1000) def send_message(message): '''Send a string message. The user's message string is wrapped in double quotes by this funciton''' send_AT('+MSG="' + message + '"') done = False while not done: data = receive_uart() if 'Done' in data or 'ERROR' in data: done = True if len(data) > 0: print(data) sleep_ms(1000) def send_hex(message): '''Send a data message in hex format. The user's message string is wrapped in double quotes by this funciton''' send_AT('+MSGHEX="' + message + '"') done = False while not done: data = receive_uart() if 'Done' in data or 'ERROR' in data: done = True if len(data) > 0: print(data) sleep_ms(1000) ########################################################## # # The main program starts here # ########################################################## test_uart_connection() get_eui_from_radio() set_app_key(app_key) configure_regional_settings(band=band, DR=DR, channels=channels) join_the_things_network() # Send example data print("sending test messages") send_message("Hello, World!") send_hex("00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF")
It's possible to send simple P2P messages between LoRa Breakouts as follows
Transmitter Code
# P2P Transmitter Example # Transmit test data direct to another Makerverse LoRa Breakout from machine import UART, Pin from utime import sleep_ms, ticks_ms sleep_ms(1000) uart = UART(1, baudrate=9600, tx=Pin(4), rx=Pin(5), timeout=1000) def receive_uart(): '''Polls the uart until all data is dequeued''' rxData=bytes() while uart.any()>0: rxData += uart.read(1) sleep_ms(2) return rxData.decode('utf-8') def send_AT(command): '''Wraps the "command" string with AT+ and \r\n''' buffer = 'AT' + command + '\r\n' uart.write(buffer) # sleep_ms(300) uart.readline() def echo(): while uart.any() > 0: rxData = uart.readline() print(rxData.decode('utf-8')) send_AT('+MODE=TEST') send_AT('+TEST=RFCFG,915,SF7') data = 0 last_transmit = 0 transmit_period = 500 while True: now = ticks_ms() if now - last_transmit > transmit_period: last_transmit = now print("Send data:",data) send_AT('+TEST=TXLRPKT,"{}"\n'.format(data)) # send test data data += 1 # increment and loop test-data data = data % 255 echo() # show debug data from LoRa-E5 module sleep_ms(600)
Receiver Code
# P2P Receiver Example # Receive test data from another Makerverse LoRa Breakout from machine import UART, Pin from utime import sleep_ms sleep_ms(1000) uart = UART(1, baudrate=9600, tx=Pin(4), rx=Pin(5)) def receive_uart(): '''Polls the uart until all data is dequeued''' rxData=bytes() while uart1.any()>0: rxData += uart1.read(1) sleep_ms(2) return rxData.decode('utf-8') def send_AT(command): '''Wraps the "command" string with AT+ and \r\n''' buffer = 'AT' + command + '\r\n' uart.write(buffer) sleep_ms(300) def receive(): uart.write('at+test=rxlrpkt\n') out = '' rxData=bytes() while uart.any()>0: rxData += uart.readline() data = rxData.decode('utf-8') out = data.replace('+TEST: RXLRPKT','') # strip AT command formatting return out send_AT('+MODE=TEST') send_AT('+TEST=RFCFG,915,SF7') sleep_ms(100) while True: raw_data = receive() # show debug data from LoRa-E5 module if len(raw_data) > 2: print(raw_data) sleep_ms(200)
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