ST STM32WL55JC Reference Manual page 202

Sub-GHz radio (SUBGHZ)
The definition of RegTcxoTrim and Timeout bytes is given in the table below.
Byte 1 [7:3]
Reserved
1. To use V
RegTcxoTrim voltage level.
2. Maximum time the system waits for the HSE32 clock to be ready, before HSEStartErr is set.
The time-out duration is computed by the following formula:
Time-out duration = Timeout x 15.625 μs (maximum time-out duration = 262.14 s)
5.8.9 Sub-GHz radio commands overview
The sub-GHz radio commands are mapped as 8-bit addressable SPI commands, as
described in the table below:
Command
CalibratImage()
Calibrate()
Cfg_DioIrq()
Clr_Error()
Clr_IrqStatus()
Get_Error()
Get_IrqStatus()
Get_PacketStatus()
Get_PacketType()
Get_RssiInst()
Get_RxBufferStatus()
Get_Stats()
202/1454
Table 40. RegTcxoTrim and Timeout bytes definition
Byte 1 RegTcxoTrim[2:0
0x0 = 1.6
0x1 = 1.7
0x2 = 1.8
0x3 = 2.2
0x4 = 2.4
0x5 = 2.7
0x6 = 3.0
0x7 = 3.3
, the V supply must be at least + 200 mV higher than the selected
DDTCXO DDRF
Table 41. Sub-GHz radio SPI commands overview
Opcode
0x98
0x89
0x08
0x07
0x02
0x17
0x12
FSK
0x14
LoRa
0x11
0x15
0x13
FSK
0x10
LoRa
RM0453 Rev 2
(1)
] (V)
0x000000 = timeout disabled
Parameters
CalFreq1, CalFreq2
CalibCfg
IrqMask, Irq1Mask, Irq2Mask, Irq3Mask
0x00
ClrIrq
Status, OpError
Status, IrqStatus
Status, RxStatus, RssiSync, RssiAvg
Status. RssiPkt, SnrPkt, SignalRssiPkt
Status, PktType
Status, RssiInst
Status, RxPayloadLength, RxStartBufferPointer
Status, NbPktReceived, NbPktCrcError, NbPktLengthError
Status, NbPktReceived, NbPktCrcError, NbPktHeaderError
Byte 2-4 [23:0] timeout
Other = timeout enabled
-
-
-
-
-
-
RM0453
(2)