Zhejiang Lierda Internet of Things technology Co. Ltd LSD4WN2L917M90 Benutzerhandbuch

include:

a）LoRaWAN NA915 application

This module interacts with the user through the serial port.

The module operating mode is designed for transparent mode and

command mode.

The user configures the LoRaWAN network parameter in the command

mode via the AT command (if not configured, the default parameter

configuration will be used).Module in the transparent mode, the user can

configure the parameters by using serial data transceiver, requiring the

module to output detailed information (the remaining data, RSSI, packet size,

the number of retransmission, etc.).After receiving a frame of data, the BUSY

pin is pulled low (busy) until the data transfer is completed (success or

failure).If the transmission fails, the STAT pin is pulled low while the BUSY pin is

high (not busy).The STAT pin returns to the high state when the user writes a

new frame of data or reads the transmission failure message through the

command mode.

For the first time, you need to configure the necessary network parameters

of the module and execute the save command. Then, reset the module (the

module initializes the network with the new parameters) and switch to the

transparent mode.

The module will automatically join the set LoRaWAN network. The user can

determine the status of the STAT pin and enter the command mode to query