The LR11xx SDK contains several simple examples for LR11xx transceivers.
| Name | Description | Documentation |
|---|---|---|
| Bluetooth Low Energy(R) Beaconing Compatibility | Demonstrate Bluetooth® Low Energy Beaconing Compatibility. Only valid for LR1110 and LR1120 | README |
| CAD | Perform a Channel Activity Detection (CAD) - LoRa only | README |
| PER | Perform a Packet Error Rate (PER) test - both Tx and Rx roles | README |
| Ping pong | Launch an exchange between two devices | README |
| RTToF (Ranging) | Perform Round-Trip Time of Flight (ranging) exchanges. Only valid for LR1110 and LR1120 | README |
| Sigfox | Send a Sigfox-compliant uplink | README |
| Spectral scan | Get inst-RSSI values in RX mode to form a heat map | README |
| Spectrum display | Get inst-RSSI values in RX mode to form a dyamic spectrum curve | README |
| Tx continuous wave | Configure the chip to transmit a single tone | README |
| Tx infinite preamble | Configure the chip to transmit an infinite preamble | README |
A demonstration of the LR-FHSS capability of the chip can be found here.
Each example has its own set of parameters - see lr11xx/apps/<example>/main_<example>.h.
There is also a common configuration file where parameters can be set, among which:
- Packet type
- RF frequency
- Output power
- Packet and modulation parameters for different modulations
This SDK is developed on the ST Microeletronic NUCLEO-L476RG development board
The list of compatible Semtech LR1110 shields is:
| Shield | PCB | Frequency matching | Characteristics |
|---|---|---|---|
| LR1110MB1DIS | E516V02B | 868/915 MHz | GNSS with LNA for Passive GNSS Antenna |
| LR1110MB1DJS | E592V01B | 868/915 MHz | GNSS without LNA |
| LR1110MB1GIS | E516V02B | 490 MHz | GNSS with LNA for Passive GNSS Antenna |
| LR1110MB1GJS | E592V01B | 490 MHz | GNSS without LNA |
The list of compatible Semtech LR1120 shields is:
| Shield | PCB | Frequency matching | Characteristics |
|---|---|---|---|
| LR1120MB1DIS | E655V01A | 868/915 MHz | GNSS with LNA for Passive GNSS Antenna |
| LR1120MB1DJS | E656V01A | 868/915 MHz | GNSS without LNA |
| LR1120MB1GIS | E655V01A | 490 MHz | GNSS with LNA for Passive GNSS Antenna |
| LR1120MB1GJS | E656V01A | 490 MHz | GNSS without LNA |
The list of compatible Semtech LR1121 shields is:
| Shield | PCB | Frequency matching | Characteristics |
|---|---|---|---|
| LR1121MB1DIS | E655V01A | 868/915 MHz | N/A |
| LR1121MB1GIS | E655V01A | 490 MHz | N/A |
This SDK requires the transceiver to run the following version
- LR1110: firmware version (0x0401)
- LR1120: firmware version (0x0201)
- LR1121: firmware version (0x0103)
To update the transceiver with the desired firmware version, please use the updater tool application.
This issue has beed fixed in firmware LR1110 0x0308 and LR1120 0x0102 - it was not present in LR1121 0x0101. The associated workaround is disabled in this project starting from v2.1.0.
If one wants to re-enable the workaround, this line has to be commented.