LoRa STM32 Source Code

Source code for Dragino LoRa module base on STM32 Chip. Support Products: LoRaST, LSN50.

How To Use Source Code: For LSN50

Switch between LSN50 Code and LoRa ST default code:

In file Projects/Multi/Applications/LoRa/DRAGINO-LRWAN(AT)/inc/hw_conf.h

#define LoRa_Sensor_Node /*LSN50*/      --- For LSN50
//#define AT_Data_Send /*AT+SEND or AT+SENDB*/    --- For LoRa ST

Custom work

Version: V1.8.1

Pin used

• Sensor pin: PB12 - Pull-down internally, input interrupt with rising edge
• Button pin: PB15- Pull-down internally, input interrupt with rising edge
• Pump pin: PB13 - Output

Uplink package format

Size (bytes)	2	4
value	12 VBattery (mV)	Counter value

Adjusting pump-timeout

Size (bytes)	1	4
value	0x34	New pump off timer

Ex: To set pump time off to 5000ms (5s) -> 0x34 0x00 0x00 0x13 0x18 (Hexadecimal - MSB)

Setting the time boudaries for pump

0x35 HH_low MM_low HH_high MM_high

Size (bytes)	1	1	1	1	1
value	0x35	Hour low limit	Min low limit	Hour high limit	Min high limit

Ex: Set the time boundaries so that the pump can only be turned on at 11:25 - 20:45 -> Downlink: 0x35 0x0A 0x19 0x14 0x2D

Note: Send 0x35 0xFF 0xFF 0xFF 0xFF to turn off the time boundaries

AT commands to time for DS3231 (Input is in decimal)

Set time → AT+TIME=HH,MM,SS Set date→ AT+DATE=D,DD,MM,YY (D = Day = Sunday -Saturday ~ 1-7)

Ex: Set time to 11:25:00 Saturday 20/11/2020

-> AT+TIME=11,25,00

-> AT+DATE=7,20,11,20

Version 1.8.2

Pin used

• Button pin: PB5- Pull-down internally, input interrupt with rising edge
• PROX_SIGNAL_3V3 pin: PB14 - Pull-down internally, input interrupt with rising edge
• PROX_EN pin: PA10 - Input
• Pump pin: PB12 - Output
• LED RED pin: PB13 - Output active low
• LED BLUE pin: PB15 - Output active low
• LED GREEN pin: PA8 - Output (RADIO ANT SWTICH)

Version 1.8.3

Uplink read config parameters after received 0x40 0x40 downlink

• Fix reset counter interrupt problem due to pwr_control pin deinit when enter low power mode

• Add AT commands for setting pump time ("AT+PUMPTIME") and time boundaries ("AT+LIMITTIME")

  Set pump time to 5000ms (5s) -> AT+PUMPTIME=5000

  Set the time boundaries so that the pump can only be turned on at 11:25 - 20:45 -> AT+LIMITTIME=11,25,20,45

  Note: Send AT+LIMITTIME=255,255,255,255 to turn off the time boundaries

• Add functions to store/read config parameters (pump time, time boundaries) from EEPROM at 0x80800D8

• Add support for copy downlink msg to uplink msg for custom work (pump time, time boundaries)

Improvements

Current implementation will prevent changing to other working mode and force to run in mode 10 after reset