ESP32-LoRa-TTNv3

This sample PlatformIO project sends every minute 'Hello LoRa Fcnt=nnn' via LoRaWAN to TheThingsNetwork. It is a test code for TTNv3

Initialize Build Environment

./INITIALIZE_BUILD_ENVIRONMENT.sh copies config to private directory.

make all your private settings in ./private/AppConfig.h

LMIC Project Settings

Find the LMIC project settings at

.pio/libdeps/<board name>/MCCI LoRaWAN LMIC library/project_config/lmic_project_config.h

e.g. #define CFG_eu868 1 for Europe 868MHz Sender/Receiver

Docker

If you do not have or want to install a PlatformIO Environment but you have a docker engine running. Go into the docker-directory

1. ./BUILD.sh - builds platformio-esp32 docker image based on Ubuntu 20.04
2. ./RUN_PLATFORMIO.sh - runns platformio twice
3. find firmware .pio/build/heltec_wifi_lora_32/firmware.bin
4. upload firmware via esptool

TTNv3 payload formatter

Find a JavaScript payload formatter in the TTNv3 directory.

References

• Heltec WiFi LoRa 32
• Heltec GitHub ESP32 LoRaWAN Repository
• TheThingsNetwork
• MCCI Arduino LoRaWAN Library

Pinouts

PIO Environment : heltec_wifi_lora_32
LMIC_NSS  = 18
LMIC_RXTX = 255
LMIC_RST  = 14
LMIC_DIO0 = 26
LMIC_DIO1 = 33
LMIC_DIO2 = 32
OLED_SDA = 4
OLED_SCL = 15
OLED_RST = 16
BUILTIN_LED = 25

PIO Environment : heltec_wifi_lora_32_V2
LMIC_NSS  = 18
LMIC_RXTX = 255
LMIC_RST  = 14
LMIC_DIO0 = 26
LMIC_DIO1 = 35
LMIC_DIO2 = 34
OLED_SDA = 4
OLED_SCL = 15
OLED_RST = 16
BUILTIN_LED = 25

PIO Environment : ttgo-lora32-v1
LMIC_NSS  = 18
LMIC_RXTX = 255
LMIC_RST  = 14
LMIC_DIO0 = 26
LMIC_DIO1 = 33
LMIC_DIO2 = 32
OLED_SDA = 4
OLED_SCL = 15
OLED_RST = 16
BUILTIN_LED = 2

PIO Environment : ttgo-lora32-v2
LMIC_NSS  = 18
LMIC_RXTX = 255
LMIC_RST  = 23
LMIC_DIO0 = 26
LMIC_DIO1 = 33
LMIC_DIO2 = 32
OLED_SDA = 21
OLED_SCL = 22
OLED_RST = 16
BUILTIN_LED = 22 *this is useless*, same as OLED_SCL

PIO Environment : ttgo-lora32-v21
LMIC_NSS  = 18
LMIC_RXTX = 255
LMIC_RST  = 23
LMIC_DIO0 = 26
LMIC_DIO1 = 33
LMIC_DIO2 = 32
OLED_SDA = 21
OLED_SCL = 22
OLED_RST = 16
BUILTIN_LED = 25