Dragino LSN50 Node

Dragino LSN50

• To use Dragino LSN50 as LoRaWAN node
• Manual: Dragio LSN50 UserManual 1.6.2 and LSN50_LoRa_Sensor_Node_UserManual_v1.6.2.pdf
• 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

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

STLink v2 USB

Driver is at https://www.st.com/en/development-tools/st-link-v2.html#tools-software

Pin mapping

• LSN50 -> STLink v2
• PA14 -> SWCLK
• PA13 -> SWDIO. NOTE: NEXT TO PA13 is PB14. WE NEED PA14!!!
• 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

STLink v2 will show up in USB Device, not Ports (COM & LPT)

2.2 Use UART to debug

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

3. Programming guides

3.1 AT Commands