1. Overview
Shipped LT-22222-L is base on LoRaWAN protocol. We also develop a open source Point to Point LoRa protocol for LT-22222-L. The source code and hex file can be found at:
Point to Point Software for LT-22222-L.
2. Features for this firmware
2.1 Overview
2.2. Configure
A's configuration:AT+GROUPMOD=0 B's configuration:AT+GROUPMOD=0
AT+TXCHS=868700000 AT+TXCHS=869000000
AT+RXCHS=869000000 AT+RXCHS=868700000
AT+TRIG1=2,50 AT+TRIG1=2,50
AT+TRIG2=2,50 AT+TRIG2=2,50
AT+DI1TODO1=2 AT+DI1TODO1=2
AT+DI1TORO1=2 AT+DI1TORO1=2
AT+DI2TODO2=2 AT+DI2TODO2=2
AT+DI2TORO2=2 AT+DI2TORO2=2
2.3. Serial port display
If the sender does not get the ACK reply from the receiver, it will retransmit up to 4 times, each interval is 6 seconds, and the UplinkCounter of the retransmission will not increase.