RM0453 Rev 2 181/1454
RM0453 Sub-GHz radio (SUBGHZ)
217
Set_Cad() command
Set_Cad() is used to detect the channel activity and can only be used with LoRa packet
types. The channel activity detection (CAD) is a specific LoRa operation mode, where the
sub-GHz radio searches for a LoRa radio signal. After the search is completed, the Standby
mode is automatically entered, CAD is done and IRQ is generated. When a LoRa radio
signal is detected, the CAD detected IRQ is also generated.
The length of the search must be configured with Set_CadParams() prior sending
Set_Cad().
Set_TxContinuousWave() command
Set_TxContinuousWave() is a test command to generate a continuous transmit tone at
the RF-PLL frequency. The sub-GHz radio remains in continuous transmit tone mode until a
mode configuration command is received.
Set_TxContinuousPreamble() command
Set_TxContinuousPreamble() is a test command to generate an infinite preamble at
the RF-PLL frequency.
The preamble is an alternating 0s and 1s sequence in generic (G)FSK and (G)MSK
modulations. The preamble is symbol 0 in LoRa modulation.
The sub-GHz radio remains in infinite preamble mode until a mode configuration command
is received.
0
Opcode
w
byte 0 bits 7:0 Opcode: 0xC5
0
Opcode
w
byte 0 bits 7:0 Opcode: 0xD1
0
Opcode
w
byte 0 bits 7:0 Opcode: 0xD2
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