LORA E32 na ESP32 Micropython

Hi.

I am learning to work with LORA E32 using your articles. I have ESP32_devkitc_V4 or ESP32_devkit_V1, LORE E32 433T30D. I program in Python. I use the codes from your articles: https://mischianti.org/ebyte-lora-e32-micropython-specifications-overview-and-first-use-1/ . On the first test with the code

#############################
#
# Simple send receive test
#
# by Renzo Mischianti
# www.mischianti.org
#
#############################
from machine import UART, Pin
import utime

# UART configuration Raspberry Pi Pico (Arduino)
#uart1 = UART(1, 9600, rx=Pin(9), tx=Pin(8))
# UART configuration Raspberry Pi Pico (MicroPython)
# uart1 = UART(1, 9600)
# UART configuration ESP32
uart1 = UART(2, 9600)

print("Hi, I'm going to send message!")
uart1.write("Hello, world?")
utime.sleep_ms(500)

while True:
    if uart1.any():
        char = uart1.read(1).decode('utf-8')
        print(char, end='')

the device worked well. The transmitter sent the message and the receiver received it.

When using the library and code

#############################
#
# Simple send receive test
# with the micropython library
# pip install ebyte-lora-e32
#
# by Renzo Mischianti
# www.mischianti.org
#
#############################
 
from lora_e32 import LoRaE32, print_configuration, Configuration
from lora_e32_operation_constant import ResponseStatusCode
from machine import UART, Pin
 
# Initialize the LoRaE32 module
# UART configuration Raspberry Pi Pico (Arduino)
# uart1 = UART(1, 9600, rx=Pin(9), tx=Pin(8))
# UART configuration Raspberry Pi Pico (MicroPython)
# uart1 = UART(1, 9600)
# UART configuration ESP32
uart1 = UART(2, 9600)
 
lora = LoRaE32('433T30D', uart1)
code = lora.begin()
print("Initialization: ", ResponseStatusCode.get_description(code))
 
# Send a string message (transparent)
message = 'Hello, world!'
code = lora.send_transparent_message(message)
print("Send message: ", ResponseStatusCode.get_description(code))
 
# Receive a string message (transparent)
while True:
    if lora.available() > 0:
        code, value = lora.receive_message()
        print(ResponseStatusCode.get_description(code))

    print(value)

ESP32 gives me an error after the reset:

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:4728
load:0x40078000,len:14888
load:0x40080400,len:3368
entry 0x400805cc
E (1639) uart: tout_thresh = 244 > maximum value = 101
Traceback (most recent call last):
File “main.py”, line 25, in <module>
File “lora_e32.py”, line 305, in begin
OSError: (-258, ‘ESP_ERR_INVALID_ARG’)
MicroPython v1.22.2 on 2024-02-22; Generic ESP32 module with ESP32
Type “help()” for more information.
>>>

I have connected the circuits according to the article. The only modification of the code is the change of the original module to E32 433T30D.

Thanks for help.
Peter

• This topic was modified 3 months, 3 weeks ago by Renzo Mischianti.