dungdt2016/EasyLoRaNode_LowPower

Low-Power Easy LoRa Node with STM32L0 and LoRa SX1278

C

Easy LoRa Node - Low Power (With battery)

Low-Power Easy LoRa Node with STM32L0 and LoRa SX1278

Hardware is Dragino LSN50 v1.0: https://wiki.dragino.com/index.php?title=Lora_Sensor_Node-LSN50
Internal LoRaST module: https://wiki.dragino.com/index.php?title=LoRa_ST

Code is written in Arduino style from stm32duino https://github.com/stm32duino/Arduino_Core_STM32

1. Hardware

1.1 Pin locations

1.2 Pin mapping for STM32L072CZT6 (used by LSN50)

Original at https://github.com/dragino/Lora/blob/master/LoRaST/v1.0/LoRa%20ST%20v1.0_Sch.pdf

2. Connect to hardware

2.1 Use STLink v2 to upload code

LSN50 -> STLink v2
PA14 -> SWCLK
PA13 -> SWDIO
VCC -> 3.3+
GND -> GND

Switch of LSN50 is ISP to upload code. It's recommended to remove UART TTL USB before uploading code via STLink

2.2 Use UART to debug

LSN50 -> CP1202 USB TTL
GND -> GND
PA2 -> RX
PA3 -> TX

3. Programming guides

3.1 Installation of stm32duino to Arduino IDE

Additional Boards Manager URLs: https://github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json

3.2 Add STM32 variant

STM32 Source file location: https://github.com/stm32duino/wiki/wiki/Where-are-sources#stm32-core-sources-files-location
To add variants https://github.com/stm32duino/wiki/wiki/Add-a-new-variant-(board)
Genpinmap for STM32L072CZT6 (used by LSN50) https://github.com/stm32duino/Arduino_Tools/tree/master/src/genpinmap/Arduino/STM32L072C(B-Z)Tx
QUICK START - Custom variant for LSN50 https://github.com/IoTThinks/EasyLoRaNode_LowPower/tree/master/stm32duino

3.3 Compilation of Arduino code using Arduino IDE on STM32 board

4. Reference

User manual for v1.0 LSN50_LoRa_Sensor_Node_UserManual_v1.0.pdf
AT Manual for stock firmware DRAGINO_STM_AT_Commands_v1.3.pdf