Antenna Control#
Basic APIs to control the antenna functionality.
Modules#
Functions#
Configure antenna path and pin locations.
Get the default RF path.
Function Documentation#
RAIL_ConfigAntenna#
RAIL_Status_t RAIL_ConfigAntenna (RAIL_Handle_t railHandle, const RAIL_AntennaConfig_t * config)
Configure antenna path and pin locations.
[in] | railHandle | A RAIL instance handle. |
[in] | config | A configuration structure applied to the relevant Antenna Configuration registers. A NULL configuration will produce undefined behavior. |
Warnings
This API must be called before any TX or RX occurs. Otherwise, the antenna configurations for those functions will not take effect.
Returns
Status code indicating success of the function call.
This function informs RAIL how to select each antenna, but not when. Antenna selection for receive is controlled by the RAIL_RxOptions_t::RAIL_RX_OPTION_ANTENNA0 and RAIL_RxOptions_t::RAIL_RX_OPTION_ANTENNA1 options (and the RAIL_RxOptions_t::RAIL_RX_OPTION_ANTENNA_AUTO combination). Antenna selection for transmit is controlled by the RAIL_TxOptions_t::RAIL_TX_OPTION_ANTENNA0 and RAIL_TxOptions_t::RAIL_TX_OPTION_ANTENNA1 options.
Although a RAIL handle is included for potential future expansion of this function, it is currently not used. That is, only one antenna configuration can be active on a chip, regardless of the number of protocols (unless the application updates the configuration upon a protocol switch), and the configuration is not saved in the RAIL instance. For optimal future compatibility, pass in a chip-specific handle, such as RAIL_EFR32_HANDLE.
504
of file common/rail.h
RAIL_GetRfPath#
RAIL_Status_t RAIL_GetRfPath (RAIL_Handle_t railHandle, RAIL_AntennaSel_t * rfPath)
Get the default RF path.
[in] | railHandle | A RAIL instance handle. |
[out] | rfPath | Pointer to RF path. |
Returns
A status code indicating success of the function call.
If multiple protocols are used, this function returns RAIL_STATUS_INVALID_STATE if it is called and the given railHandle is not active. In that case, the caller must attempt to re-call this function later, for example when RAIL_EVENT_CONFIG_SCHEDULED trigger.
519
of file common/rail.h