PA Curve Conversions#

Modules#

Enumerations#

enum

RAIL_PaConversionAlgorithm_t {

RAIL_PA_ALGORITHM_PIECEWISE_LINEAR

RAIL_PA_ALGORITHM_MAPPING_TABLE

RAIL_PA_ALGORITHM_DBM_POWERSETTING_MAPPING_TABLE

RAIL_PA_ALGORITHM_COUNT

}

PA conversion algorithms types for converting between dBm and power levels.

Variables#

const RAIL_TxPowerCurvesConfigAlt_t

RAIL_TxPowerCurvesVbat

The curves to be used when battery voltage powers transmission.

const RAIL_TxPowerCurvesConfigAlt_t

RAIL_TxPowerCurvesDcdc

The curves to be used when the DC-DC converter powers transmission.

Functions#

RAIL_Status_t

RAIL_InitTxPowerCurves(const RAIL_TxPowerCurvesConfig_t *config)

Initialize Transmit power curves.

RAIL_Status_t

RAIL_InitTxPowerCurvesAlt(const RAIL_TxPowerCurvesConfigAlt_t *config)

Initialize TxPower curves.

RAIL_TxPowerCurves_t const *

RAIL_GetTxPowerCurve(RAIL_TxPowerMode_t mode)

Gets the curve that should be used for conversion functions based on the current PA configuration.

RAIL_Status_t

RAIL_GetTxPowerCurveLimits(RAIL_Handle_t railHandle, RAIL_TxPowerMode_t mode, RAIL_TxPower_t *maxpower, RAIL_TxPower_t *increment)

Gets the maximum power in deci-dBm that should be used for calculating the segments and to find right curve segment to convert Dbm to raw power level for a specific PA.

void

sl_rail_util_pa_on_channel_config_change(RAIL_Handle_t rail_handle, const RAIL_ChannelConfigEntry_t *entry)

Provide a channel config change callback capable of configuring the PA correctly.

Enumeration Documentation#

RAIL_PaConversionAlgorithm_t#

RAIL_PaConversionAlgorithm_t

PA conversion algorithms types for converting between dBm and power levels.

DeprecatedThis RAIL 2.x enum has been eliminated in RAIL 3 which uses PA power tables instead.

Enumerator
RAIL_PA_ALGORITHM_PIECEWISE_LINEAR	Piecewise linear fit.
RAIL_PA_ALGORITHM_MAPPING_TABLE	Mapping table between quantities.
RAIL_PA_ALGORITHM_DBM_POWERSETTING_MAPPING_TABLE	Mapping table between pa power settings and dBm values.
RAIL_PA_ALGORITHM_COUNT	Algorithm count.

Variable Documentation#

RAIL_TxPowerCurvesVbat#

const RAIL_TxPowerCurvesConfigAlt_t RAIL_TxPowerCurvesVbat

The curves to be used when battery voltage powers transmission.

DeprecatedThis RAIL 2.x variable has been eliminated in RAIL 3. See RAIL 3 discussion in RAIL 2.x Power Amplifier (PA) Utility.

RAIL_TxPowerCurvesDcdc#

const RAIL_TxPowerCurvesConfigAlt_t RAIL_TxPowerCurvesDcdc

The curves to be used when the DC-DC converter powers transmission.

DeprecatedThis RAIL 2.x variable has been eliminated in RAIL 3. See RAIL 3 discussion in RAIL 2.x Power Amplifier (PA) Utility.

Function Documentation#

RAIL_InitTxPowerCurves#

RAIL_Status_t RAIL_InitTxPowerCurves (const RAIL_TxPowerCurvesConfig_t * config)

Initialize Transmit power curves.

Parameters

Type	Direction	Argument Name	Description
const RAIL_TxPowerCurvesConfig_t *	[in]	config	A pointer to the custom TX power curves.

Returns

Status code indicating success of the function call.

DeprecatedThis function is no longer supported in RAIL 2.x. Must use RAIL_InitTxPowerCurvesAlt() instead.

RAIL_InitTxPowerCurvesAlt#

RAIL_Status_t RAIL_InitTxPowerCurvesAlt (const RAIL_TxPowerCurvesConfigAlt_t * config)

Initialize TxPower curves.

Parameters

Type	Direction	Argument Name	Description
const RAIL_TxPowerCurvesConfigAlt_t *	[in]	config	A pointer to the custom TX power curves to use.

Returns

Status code indicating success of the function call.

DeprecatedThis RAIL 2.x function has been replaced in RAIL 3 by sl_rail_util_pa_init_tx_power_table() with different parameters.

RAIL_GetTxPowerCurve#

RAIL_TxPowerCurves_t const * RAIL_GetTxPowerCurve (RAIL_TxPowerMode_t mode)

Gets the curve that should be used for conversion functions based on the current PA configuration.

Parameters

Type	Direction	Argument Name	Description
RAIL_TxPowerMode_t	[in]	mode	PA mode whose curves are needed.

Returns

A pointer to the RAIL_TxPowerCurves_t that are used for conversion functions.

Note

: If the mode is not supported by the the chip, then NULL will be returned.

DeprecatedThis RAIL 2.x function has been replaced in RAIL 3 by sl_rail_util_pa_get_power_setting_table() with different parameters.

RAIL_GetTxPowerCurveLimits#

RAIL_Status_t RAIL_GetTxPowerCurveLimits (RAIL_Handle_t railHandle, RAIL_TxPowerMode_t mode, RAIL_TxPower_t * maxpower, RAIL_TxPower_t * increment)

Gets the maximum power in deci-dBm that should be used for calculating the segments and to find right curve segment to convert Dbm to raw power level for a specific PA.

Parameters

Type	Direction	Argument Name	Description
RAIL_Handle_t	[in]	railHandle	A RAIL instance handle.
RAIL_TxPowerMode_t	[in]	mode	PA mode whose curves are needed.
RAIL_TxPower_t *	[out]	maxpower	A non-NULL pointer to memory allocated to hold the max power in deci-dBm used in calculation of curve segments.
RAIL_TxPower_t *	[out]	increment	A non-NULL pointer to memory allocated to hold the increment in deci-dBm used in calculation of curve segments.

Returns

Status code indicating success of the function call.

For the PAs with RAIL_PaConversionAlgorithm_t RAIL_PA_ALGORITHM_PIECEWISE_LINEAR, if the curves are generated with maxPower and increment other than RAIL_TX_POWER_CURVE_DEFAULT_MAX and RAIL_TX_POWER_CURVE_DEFAULT_INCREMENT respectively, then the first RAIL_TxPowerCurveSegment_t has its maxPowerLevel equal to RAIL_TX_POWER_LEVEL_INVALID and its slope and intercept stores the maxPower and increment in deci-dBm respectively.

DeprecatedThis RAIL 2.x function has been replaced in RAIL 3 by sl_rail_util_pa_get_power_setting_table() with different parameters.

sl_rail_util_pa_on_channel_config_change#

void sl_rail_util_pa_on_channel_config_change (RAIL_Handle_t rail_handle, const RAIL_ChannelConfigEntry_t * entry)

Provide a channel config change callback capable of configuring the PA correctly.

Parameters

Type	Direction	Argument Name	Description
RAIL_Handle_t	[in]	rail_handle	The RAIL handle being passed into this callback.
const RAIL_ChannelConfigEntry_t *	[in]	entry	A pointer to the channel config entry being switched to by hardware.