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LR11xx SDK

This LR11xx SDK just contains the ranging example for LR11x0 transceivers.

Requirements

Supported boards

This SDK is developed on the ST Microeletronic NUCLEO-L476RG development board.

Supported shields

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

Firmware

This SDK requires the transceiver to run the following version:

  • LR1110: firmware version (0x0401).
  • LR1120: firmware version (0x0201).

To update the transceiver with the desired firmware version, please use the updater tool application.

Workaround

High ACP (Adjacent Channel Power)

This issue has been 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.