Contents
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 | B's configuration |
|---|---|
| AT+GROUPMOD=0 | 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.