Semtech LR1110 - LR1110 RSSI Functionality

LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
69 of 130
Semtech
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8.6.1.3 ClearRxBuffer
The command ClearRxBuffer( ) clears all the data in the LR1110 RX buffer. It will write ‘0’ on the whole RX buffer. It is used
to ensure the data in the RX buffer is not from the last packet, mostly a debug feature.
8.6.2 Data Buffer in Transmit Mode
The payload data to be transmitted shall be written the Tx Buffer using the command WriteBuffer8( ).
8.6.2.1 WriteBuffer8
The command WriteBuffer8( ) allows writing a block of bytes (up to 255 Bytes) in the radio TX buffer.
8.7 RSSI Functionality
The RSSI information of the LR1110 is available through different means: either in the sub-GHz chain, or at the modem
stage.
A summary of the different RSSI informations and their meaning is summarized in the table Table 8-36: RSSI Information
Origin and Meaning below:
Table 8-34: ClearRxBufferStatus Command
Byte 0 1
Data from Host 0x01 0x0B
Data to Host Stat1 Stat2
Table 8-35: WriteBuffer8 Command
Byte
0 1 2 3 4 5 6 ... N+1
Data from
Host
0x01 0x09 data1 data2 data3 data4 data5 ... dataN
Data to
Host
Stat1 Stat2
IrqStatus
(31:24)
IrqStatus
(23:16)
IrqStatus
(15:8)
IrqStatus
(7:0)
0 ... 0
Table 8-36: RSSI Information Origin and Meaning
Command
Modem
Name Description
GetRssiInst( )
All RssiInst Instantaneous RSSI