Dragino LSN50 - Hardware Change Log

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LSN50 LoRa Sensor Node User Manual 8 / 60
17
PA12
In/Out
Directly from STM32 chip
18
PA11
In/Out
Directly from STM32 chip
19
PA14
In/Out
Directly from STM32 chip
20
PB13
In/Out
Directly from STM32 chip
21
PB12
In/Out
Directly from STM32 chip
22
PB15
In/Out
Directly from STM32 chip
23
PB14
In/Out
Directly from STM32 chip
24
PA13
In/Out
Directly from STM32 chip
25
PA8
In/Out
Directly from STM32 chip
Default use to turn on/off LED1
in LSN50 image
26
GND
Ground
27
+5V
Out
5v output power
Controlled by PB5(Low to
Enable, High to Disable)
28
LED1
Controlled by PA8
Blink on transmit
29
BOOT MODE
Configure device in working
mode or ISP program mode
Flash: Normal Working mode
and send AT Commands
ISP: UART Program Mode
30
NRST
In
Reset MCU
1.6 Hardware Change log
LSN50 v1.2:
● Add LED. Turn on for every LoRa transmit
● Add pin PA4, PB13, NRST
● Add 5V Output, on/off control by PB5(Low to Enable, High to Disable)
LSN50 v1.3:
● Add P-MOS to control 5V output