ST STM32WL5 Series Reference Manual page 201

RM0453
byte 0
byte 1
byte 2
The calibration frequencies are computed as follows:
Calibration
Example: 0x6B = 428 MHz.
When CalFreq1 = CalFreq2, the image calibration is done at a single frequency.
For frequencies between CalFreq1 and CalFreq2, the calibration coefficient is linearly
interpolated from the values obtained during the image calibration at CalFreq1 and
CalFreq2.
For frequencies < CalFreq1, the coefficient obtained during the image calibration at
CalFreq1 is used.
For frequencies > CalFreq2, the coefficient obtained during the image calibration at
CalFreq2 is used.
Set_RegulatorMode() command
Set_RegulatorMode(RegMode) allows the sub-GHz radio supply operation mode
selection, between LDO mode (default) and SMPS mode, when in Standby with HSE32 and
Active modes.
byte 0
byte 1
Note: For the different CPU operating modes, the LDO or SMPS mode is controlled by the
SMPSEN bit
selects the SMPS mode, the LDO mode selection is discarded.
Get_Error() command
Get_Error(Status, OpError) returns the sub-GHz radio operational errors.
Opcode
0
Opcode
w
bits 7:0 Opcode: 0x98
bits 7:0 CalFreq1[7:0]: Lower frequency of the band to calibrate (see
bits 7:0 CalFreq2[7:0]: Higher frequency of the band to calibrate (see
= CalFreq * 4 MHz where CalFreq1 < CalFreq2
freq
0
Opcode
w
bits 7:0 Opcode: 0x96
bits 7:1 Reserved, must be kept at reset value.
bit 0 RegMode: Regulator mode selection when sub-GHz radio is active
0: LDO mode
1: SMPS mode used in Standby with HSE32, FS, RX and TX modes
inPWR control register 5
0
Status[7:0]
w
1
CalFreq1[7:0]
w
(PWR_CR5). When the sub-GHz radio or CPU
1
r
RM0453 Rev 1
Sub-GHz radio (SUBGHZ)
2
CalFreq2[7:0]
w
Table
Table
1
RegMode
w
2
OpError[15:0]
r
38)
38)
3
r
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