Transmit#

APIs related to transmitting data packets.

Modules#

RAIL_TxPacketDetails_t

RAIL_ScheduleTxConfig_t

RAIL_CsmaConfig_t

RAIL_LbtConfig_t

RAIL_SyncWordConfig_t

RAIL_TxRepeatConfig_t

Packet Transmit

Power Amplifier (PA)

Enumerations#

enum
RAIL_STOP_MODE_ACTIVE_SHIFT = 0
RAIL_STOP_MODE_PENDING_SHIFT = 1
}

Stop radio operation options bit mask.

enum
RAIL_TX_OPTION_WAIT_FOR_ACK_SHIFT = 0
RAIL_TX_OPTION_REMOVE_CRC_SHIFT = 1
RAIL_TX_OPTION_SYNC_WORD_ID_SHIFT = 2
RAIL_TX_OPTION_ANTENNA0_SHIFT = 3
RAIL_TX_OPTION_ANTENNA1_SHIFT = 4
RAIL_TX_OPTION_ALT_PREAMBLE_LEN_SHIFT = 5
RAIL_TX_OPTION_CCA_PEAK_RSSI_SHIFT = 6
RAIL_TX_OPTION_CCA_ONLY_SHIFT = 7
RAIL_TX_OPTION_RESEND_SHIFT = 8
RAIL_TX_OPTION_CONCURRENT_PHY_ID_SHIFT = 9
RAIL_TX_OPTIONS_COUNT
}

Transmit options, in reality a bitmask.

enum
RAIL_SCHEDULED_TX_DURING_RX_POSTPONE_TX = 0
RAIL_SCHEDULED_TX_DURING_RX_ABORT_TX = 1
}

Enumerates the possible outcomes of what will occur if a scheduled TX ends up firing during RX.

enum
RAIL_TX_REPEAT_OPTION_HOP_SHIFT = 0
RAIL_TX_REPEAT_OPTION_START_TO_START_SHIFT = 1
}

Transmit repeat options, in reality a bitmask.

Functions#

RAIL_StopTx(RAIL_Handle_t railHandle, RAIL_StopMode_t mode)

Stop an active or pending transmit.

RAIL_SetCcaThreshold(RAIL_Handle_t railHandle, int8_t ccaThresholdDbm)

Set the CCA threshold in dBm.

RAIL_GetTxPacketDetails(RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Get detailed information about the last packet transmitted.

RAIL_GetTxPacketDetailsAlt(RAIL_Handle_t railHandle, bool isAck, RAIL_Time_t *pPacketTime)

Get detailed information about the last packet transmitted.

RAIL_GetTxPacketDetailsAlt2(RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Get detailed information about the last packet transmitted.

RAIL_GetTxTimePreambleStart(RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX completion timestamp to refer to the start of the preamble.

RAIL_GetTxTimePreambleStartAlt(RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX completion timestamp to refer to the start of the preamble.

RAIL_GetTxTimeSyncWordEnd(RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX timestamp to refer to the end of the sync word.

RAIL_GetTxTimeSyncWordEndAlt(RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX timestamp to refer to the end of the sync word.

RAIL_GetTxTimeFrameEnd(RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX timestamp to refer to the end of frame.

RAIL_GetTxTimeFrameEndAlt(RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX timestamp to refer to the end of frame.

RAIL_EnableTxHoldOff(RAIL_Handle_t railHandle, bool enable)

Prevent the radio from starting a transmit.

bool
RAIL_IsTxHoldOffEnabled(RAIL_Handle_t railHandle)

Check whether or not TX hold off is enabled.

RAIL_SetTxAltPreambleLength(RAIL_Handle_t railHandle, uint16_t length)

Set an alternate transmitter preamble length.

Macros#

#define

Do not stop any radio operations.

#define
RAIL_STOP_MODE_ACTIVE (1U << RAIL_STOP_MODE_ACTIVE_SHIFT)

Stop active radio operations only.

#define
RAIL_STOP_MODE_PENDING (1U << RAIL_STOP_MODE_PENDING_SHIFT)

Stop pending radio operations.

#define

Stop all radio operations.

#define

A value representing no options enabled.

#define
RAIL_TX_OPTIONS_DEFAULT RAIL_TX_OPTIONS_NONE

All options disabled by default.

#define
RAIL_TX_OPTION_WAIT_FOR_ACK (1UL << RAIL_TX_OPTION_WAIT_FOR_ACK_SHIFT)

An option when auto-ACK has been configured, enabled, and not TX paused, to configure whether or not the transmitting node will listen for an ACK response.

#define
RAIL_TX_OPTION_REMOVE_CRC (1UL << RAIL_TX_OPTION_REMOVE_CRC_SHIFT)

An option to remove CRC bytes from TX packets.

#define
RAIL_TX_OPTION_SYNC_WORD_ID (1UL << RAIL_TX_OPTION_SYNC_WORD_ID_SHIFT)

An option to select which sync word is used during the transmission.

#define
RAIL_TX_OPTION_ANTENNA0 (1UL << RAIL_TX_OPTION_ANTENNA0_SHIFT)

An option to select antenna 0 for transmission.

#define
RAIL_TX_OPTION_ANTENNA1 (1UL << RAIL_TX_OPTION_ANTENNA1_SHIFT)

An option to select antenna 1 for transmission.

#define
RAIL_TX_OPTION_ALT_PREAMBLE_LEN (1UL << RAIL_TX_OPTION_ALT_PREAMBLE_LEN_SHIFT)

An option to use the alternate preamble length established by RAIL_SetTxAltPreambleLength() for the transmission.

#define
RAIL_TX_OPTION_CCA_PEAK_RSSI (1UL << RAIL_TX_OPTION_CCA_PEAK_RSSI_SHIFT)

An option to use peak rather than average RSSI energy detected during CSMA's RAIL_CsmaConfig_t::ccaDuration or LBT's RAIL_LbtConfig_t::lbtDuration to determine whether the channel is clear or busy.

#define
RAIL_TX_OPTION_CCA_ONLY (1UL << RAIL_TX_OPTION_CCA_ONLY_SHIFT)

An option to only perform the CCA (CSMA/LBT) operation but not automatically transmit if the channel is clear.

#define
RAIL_TX_OPTION_RESEND (1UL << RAIL_TX_OPTION_RESEND_SHIFT)

An option to resend packet at the beginning of the Transmit FIFO.

#define
RAIL_TX_OPTION_CONCURRENT_PHY_ID (1UL << RAIL_TX_OPTION_CONCURRENT_PHY_ID_SHIFT)

An option to specify which PHY is used to transmit in the case of concurrent mode.

#define
RAIL_TX_OPTIONS_ALL 0xFFFFFFFFUL

A value representing all possible options.

#define

The maximum number of LBT/CSMA retries supported.

#define

The maximum power-of-2 exponent for CSMA backoffs.

#define

RAIL_CsmaConfig_t initializer configuring CSMA per IEEE 802.15.4-2003 on 2.4 GHz OSPSK, commonly used by ZigBee.

#define

RAIL_CsmaConfig_t initializer configuring a single CCA prior to TX.

#define

RAIL_LbtConfig_t initializer configuring LBT per ETSI 300 220-1 V2.4.1 for a typical Sub-GHz band.

#define

RAIL_LbtConfig_t initializer configuring LBT per ETSI 300 220-1 V3.1.0 for a typical Sub-GHz band.

#define

A value representing no repeat options enabled.

#define
RAIL_TX_REPEAT_OPTIONS_DEFAULT RAIL_TX_REPEAT_OPTIONS_NONE

All repeat options disabled by default.

#define
RAIL_TX_REPEAT_OPTION_HOP (1U << RAIL_TX_REPEAT_OPTION_HOP_SHIFT)

An option to configure whether or not to channel-hop before each repeated transmit.

#define
RAIL_TX_REPEAT_OPTION_START_TO_START (1 << RAIL_TX_REPEAT_OPTION_START_TO_START_SHIFT)

An option to configure the delay between transmissions to be from start to start instead of end to start.

#define

RAIL_TxRepeatConfig_t::iterations initializer configuring infinite repeated transmissions.

Enumeration Documentation#

RAIL_StopMode_t#

RAIL_StopMode_t

Stop radio operation options bit mask.

Enumerator
RAIL_STOP_MODE_ACTIVE_SHIFT

Shift position of RAIL_STOP_MODE_ACTIVE bit.

RAIL_STOP_MODE_PENDING_SHIFT

Shift position of RAIL_STOP_MODE_PENDING bit.


Definition at line 3029 of file common/rail_types.h

RAIL_TxOptions_t#

RAIL_TxOptions_t

Transmit options, in reality a bitmask.

Enumerator
RAIL_TX_OPTION_WAIT_FOR_ACK_SHIFT

Shift position of RAIL_TX_OPTION_WAIT_FOR_ACK bit.

RAIL_TX_OPTION_REMOVE_CRC_SHIFT

Shift position of RAIL_TX_OPTION_REMOVE_CRC bit.

RAIL_TX_OPTION_SYNC_WORD_ID_SHIFT

Shift position of RAIL_TX_OPTION_SYNC_WORD_ID bit.

RAIL_TX_OPTION_ANTENNA0_SHIFT

Shift position of RAIL_TX_OPTION_ANTENNA0 bit.

RAIL_TX_OPTION_ANTENNA1_SHIFT

Shift position of RAIL_TX_OPTION_ANTENNA1 bit.

RAIL_TX_OPTION_ALT_PREAMBLE_LEN_SHIFT

Shift position of RAIL_TX_OPTION_ALT_PREAMBLE_LEN bit.

RAIL_TX_OPTION_CCA_PEAK_RSSI_SHIFT

Shift position of RAIL_TX_OPTION_CCA_PEAK_RSSI bit.

RAIL_TX_OPTION_CCA_ONLY_SHIFT

Shift position of RAIL_TX_OPTION_CCA_ONLY bit.

RAIL_TX_OPTION_RESEND_SHIFT

Shift position of RAIL_TX_OPTION_RESEND bit.

RAIL_TX_OPTION_CONCURRENT_PHY_ID_SHIFT

Shift position of RAIL_TX_OPTION_CONCURRENT_PHY_ID bit.

RAIL_TX_OPTIONS_COUNT

A count of the choices in this enumeration.


Definition at line 3049 of file common/rail_types.h

RAIL_ScheduledTxDuringRx_t#

RAIL_ScheduledTxDuringRx_t

Enumerates the possible outcomes of what will occur if a scheduled TX ends up firing during RX.

Because RX and TX can't happen at the same time, it is up to the user how the TX should be handled. This enumeration is passed into RAIL_StartScheduledTx() as part of RAIL_ScheduleTxConfig_t.

Enumerator
RAIL_SCHEDULED_TX_DURING_RX_POSTPONE_TX

The scheduled TX will be postponed until RX completes and then sent.

RAIL_SCHEDULED_TX_DURING_RX_ABORT_TX

The scheduled TX will be aborted and a RAIL_EVENT_TX_BLOCKED event will fire.


Definition at line 3230 of file common/rail_types.h

RAIL_TxRepeatOptions_t#

RAIL_TxRepeatOptions_t

Transmit repeat options, in reality a bitmask.

Enumerator
RAIL_TX_REPEAT_OPTION_HOP_SHIFT

Shift position of RAIL_TX_REPEAT_OPTION_HOP bit.

RAIL_TX_REPEAT_OPTION_START_TO_START_SHIFT

Shift position of the RAIL_TX_REPEAT_OPTION_START_TO_START bit.


Definition at line 3601 of file common/rail_types.h

Function Documentation#

RAIL_StopTx#

RAIL_Status_t RAIL_StopTx (RAIL_Handle_t railHandle, RAIL_StopMode_t mode)

Stop an active or pending transmit.

Parameters
[in]railHandle

A RAIL instance handle.

[in]mode

Specifies the type(s) of transmit to stop.

Returns

Note


Definition at line 3282 of file common/rail.h

RAIL_SetCcaThreshold#

RAIL_Status_t RAIL_SetCcaThreshold (RAIL_Handle_t railHandle, int8_t ccaThresholdDbm)

Set the CCA threshold in dBm.

Parameters
[in]railHandle

A RAIL instance handle.

[in]ccaThresholdDbm

The CCA threshold in dBm.

Returns

  • Status code indicating success of the function call.

Unlike RAIL_StartCcaCsmaTx() or RAIL_StartCcaLbtTx(), which can cause a transmit, this function only modifies the CCA threshold. A possible use case for this function involves setting the CCA threshold to invalid RSSI of -128 which blocks transmission by preventing clear channel assessments from succeeding.


Definition at line 3297 of file common/rail.h

RAIL_GetTxPacketDetails#

RAIL_Status_t RAIL_GetTxPacketDetails (RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Get detailed information about the last packet transmitted.

Parameters
[in]railHandle

A RAIL instance handle.

[inout]pPacketDetails

An application-provided pointer to store RAIL_TxPacketDetails_t corresponding to the transmit event. The isAck and timeSent fields totalPacketBytes and timePosition must be initialized prior to each call:

  • isAck true to obtain details about the most recent ACK transmit, false to obtain details about the most recent app-initiated transmit.

  • totalPacketBytes with the total number of bytes of the transmitted packet for RAIL to use when calculating the specified timestamp. This should account for all bytes sent over the air after the Preamble and Sync word(s), including CRC bytes.

  • timePosition with a RAIL_PacketTimePosition_t value specifying the packet position to put in the timeSent field on return. This field will also be updated with the actual position corresponding to the timeSent value filled in.

Returns

Note

This function can only be called from callback context for either RAIL_EVENT_TX_PACKET_SENT or RAIL_EVENT_TXACK_PACKET_SENT events.


Definition at line 3327 of file common/rail.h

RAIL_GetTxPacketDetailsAlt#

RAIL_Status_t RAIL_GetTxPacketDetailsAlt (RAIL_Handle_t railHandle, bool isAck, RAIL_Time_t *pPacketTime)

Get detailed information about the last packet transmitted.

Parameters
[in]railHandle

A RAIL instance handle.

[in]isAck

true to obtain details about the most recent ACK transmit. false to obtain details about the most recent app-initiated transmit.

[out]pPacketTime

An application-provided non-NULL pointer to store a RAIL_Time_t corresponding to the transmit event. This will be populated with a timestamp corresponding to an arbitrary location in the packet. Call RAIL_GetTxTimePreambleStart, RAIL_GetTxTimeSyncWordEnd, or RAIL_GetTxTimeFrameEnd to adjust the timestamp for different locations in the packet.

Returns

Note

This function can only be called from callback context for either RAIL_EVENT_TX_PACKET_SENT or RAIL_EVENT_TXACK_PACKET_SENT events.


Definition at line 3354 of file common/rail.h

RAIL_GetTxPacketDetailsAlt2#

RAIL_Status_t RAIL_GetTxPacketDetailsAlt2 (RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Get detailed information about the last packet transmitted.

Parameters
[in]railHandle

A RAIL instance handle.

[inout]pPacketDetails

An application-provided pointer to store RAIL_TxPacketDetails_t corresponding to the transmit event. The isAck field must be initialized prior to each call:

  • isAck true to obtain details about the most recent ACK transmit, false to obtain details about the most recent app-initiated transmit. The timeSent field packetTime will be populated with a timestamp corresponding to a default location in the packet. The timeSent field timePosition will be populated with a RAIL_PacketTimePosition_t value specifying that default packet location. Call RAIL_GetTxTimePreambleStartAlt, RAIL_GetTxTimeSyncWordEndAlt, or RAIL_GetTxTimeFrameEndAlt to adjust the timestamp for different locations in the packet.

Returns

This function can only be called from callback context for either RAIL_EVENT_TX_PACKET_SENT or RAIL_EVENT_TXACK_PACKET_SENT events.


Definition at line 3381 of file common/rail.h

RAIL_GetTxTimePreambleStart#

RAIL_Status_t RAIL_GetTxTimePreambleStart (RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX completion timestamp to refer to the start of the preamble.

Parameters
[in]railHandle

A RAIL instance handle.

[in]totalPacketBytes

The total number of bytes of the transmitted packet for RAIL to use when adjusting the provided timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes. Pass RAIL_TX_STARTED_BYTES to retrieve the start-of-normal-TX timestamp (see below).

[inout]pPacketTime

This points to the RAIL_Time_t returned from a previous call to RAIL_GetTxPacketDetailsAlt for this same packet. That time will be updated with the time that the preamble for this packet started on air. Must be non-NULL.

Also used to retrieve the RAIL_EVENT_TX_STARTED timestamp.

Returns

  • RAIL_STATUS_NO_ERROR if pPacketTime was successfully determined or an appropriate error code otherwise.

When used for timestamp adjustment, call this function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt() is called.

This function may be called when handling the RAIL_EVENT_TX_STARTED event to retrieve that event's start-of-normal-TX timestamp. (ACK transmits currently have no equivalent event or associated timestamp.) In this case, totalPacketBytes must be RAIL_TX_STARTED_BYTES, and pPacketTime is an output-only parameter filled in with that time (so no need to initialize it beforehand by calling RAIL_GetTxPacketDetailsAlt()).


Definition at line 3416 of file common/rail.h

RAIL_GetTxTimePreambleStartAlt#

RAIL_Status_t RAIL_GetTxTimePreambleStartAlt (RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX completion timestamp to refer to the start of the preamble.

Parameters
[in]railHandle

A RAIL instance handle.

[inout]pPacketDetails

A non-NULL pointer to the details that were returned from a previous call to RAIL_GetTxPacketDetailsAlt2 for this same packet. The application must update the timeSent field totalPacketBytes to be the total number of bytes of the sent packet for RAIL to use when calculating the specified timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes. Pass RAIL_TX_STARTED_BYTES to retrieve the start-of-normal-TX timestamp (see below). After this function, the timeSent field packetTime will be updated with the time that the preamble for this packet started on air.

Also used to retrieve the RAIL_EVENT_TX_STARTED timestamp.

Returns

  • RAIL_STATUS_NO_ERROR if the packet time was successfully calculated, or an appropriate error code otherwise.

When used for timestamp adjustment, call this function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt2() is called.

This function may be called when handling the RAIL_EVENT_TX_STARTED event to retrieve that event's start-of-normal-TX timestamp. (ACK transmits currently have no equivalent event or associated timestamp.) In this case, the timeSent field totalPacketBytes must be RAIL_TX_STARTED_BYTES, and the timeSent field packetTime is an output-only parameter filled in with that time (so no need to initialize it beforehand by calling RAIL_GetTxPacketDetailsAlt2()).


Definition at line 3451 of file common/rail.h

RAIL_GetTxTimeSyncWordEnd#

RAIL_Status_t RAIL_GetTxTimeSyncWordEnd (RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX timestamp to refer to the end of the sync word.

Parameters
[in]railHandle

A RAIL instance handle.

[in]totalPacketBytes

The total number of bytes of the transmitted packet for RAIL to use when calculating the specified timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes.

[inout]pPacketTime

The time that was returned in a RAIL_Time_t from a previous call to RAIL_GetTxPacketDetailsAlt for this same packet. After this function, the time at that location will be updated with the time that the sync word for this packet finished on air. Must be non-NULL.

Returns

  • RAIL_STATUS_NO_ERROR if pPacketTime was successfully calculated, or an appropriate error code otherwise.

Call the timestamp adjustment function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt() is called.


Definition at line 3474 of file common/rail.h

RAIL_GetTxTimeSyncWordEndAlt#

RAIL_Status_t RAIL_GetTxTimeSyncWordEndAlt (RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX timestamp to refer to the end of the sync word.

Parameters
[in]railHandle

A RAIL instance handle.

[inout]pPacketDetails

A non-NULL pointer to the details that were returned from a previous call to RAIL_GetTxPacketDetailsAlt2 for this same packet. The application must update the timeSent field totalPacketBytes to be the total number of bytes of the sent packet for RAIL to use when calculating the specified timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes. After this function, the timeSent field packetTime will be updated with the time that the sync word for this packet finished on air.

Returns

  • RAIL_STATUS_NO_ERROR if the packet time was successfully calculated, or an appropriate error code otherwise.

Call the timestamp adjustment function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt2() is called.


Definition at line 3498 of file common/rail.h

RAIL_GetTxTimeFrameEnd#

RAIL_Status_t RAIL_GetTxTimeFrameEnd (RAIL_Handle_t railHandle, uint16_t totalPacketBytes, RAIL_Time_t *pPacketTime)

Adjust a RAIL TX timestamp to refer to the end of frame.

Parameters
[in]railHandle

A RAIL instance handle.

[in]totalPacketBytes

The total number of bytes of the transmitted packet for RAIL to use when calculating the specified timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes.

[inout]pPacketTime

The time that was returned in a RAIL_Time_t from a previous call to RAIL_GetTxPacketDetailsAlt for this same packet. After this function, the time at that location will be updated with the time that this packet finished on air. Must be non-NULL.

Returns

  • RAIL_STATUS_NO_ERROR if pPacketTime was successfully calculated, or an appropriate error code otherwise.

Call the timestamp adjustment function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt() is called.


Definition at line 3521 of file common/rail.h

RAIL_GetTxTimeFrameEndAlt#

RAIL_Status_t RAIL_GetTxTimeFrameEndAlt (RAIL_Handle_t railHandle, RAIL_TxPacketDetails_t *pPacketDetails)

Adjust a RAIL TX timestamp to refer to the end of frame.

Parameters
[in]railHandle

A RAIL instance handle.

[inout]pPacketDetails

A non-NULL pointer to the details that were returned from a previous call to RAIL_GetTxPacketDetailsAlt2 for this same packet. The application must update the timeSent field totalPacketBytes to be the total number of bytes of the sent packet for RAIL to use when calculating the specified timestamp. This should account for all bytes transmitted over the air after the Preamble and Sync word(s), including CRC bytes. After this function, the timeSent field packetTime will be updated with the time that this packet finished on air.

Returns

  • RAIL_STATUS_NO_ERROR if the packet time was successfully calculated, or an appropriate error code otherwise.

Call the timestamp adjustment function in the same transmit-complete event-handling context as RAIL_GetTxPacketDetailsAlt2() is called.


Definition at line 3544 of file common/rail.h

RAIL_EnableTxHoldOff#

RAIL_Status_t RAIL_EnableTxHoldOff (RAIL_Handle_t railHandle, bool enable)

Prevent the radio from starting a transmit.

Parameters
[in]railHandle

A RAIL instance handle.

[in]enable

Enable/Disable TX hold off.

Returns

  • Status code indicating success of the function call.

Enable TX hold off to prevent the radio from starting any transmits. Disable TX hold off to allow the radio to transmit again. Attempting to transmit with the TX hold off enabled will result in RAIL_EVENT_TX_BLOCKED and/or RAIL_EVENT_TXACK_BLOCKED events.

Note

  • This function does not affect a transmit that has already started. To stop an already-started transmission, use RAIL_Idle() with RAIL_IDLE_ABORT.


Definition at line 3564 of file common/rail.h

RAIL_IsTxHoldOffEnabled#

bool RAIL_IsTxHoldOffEnabled (RAIL_Handle_t railHandle)

Check whether or not TX hold off is enabled.

Parameters
[in]railHandle

A RAIL instance handle.

Returns

  • true if TX hold off is enabled, false otherwise.

TX hold off can be enabled/disabled using RAIL_EnableTxHoldOff. Attempting to transmit with the TX hold off enabled will block the transmission and result in RAIL_EVENT_TX_BLOCKED and/or RAIL_EVENT_TXACK_BLOCKED events.


Definition at line 3577 of file common/rail.h

RAIL_SetTxAltPreambleLength#

RAIL_Status_t RAIL_SetTxAltPreambleLength (RAIL_Handle_t railHandle, uint16_t length)

Set an alternate transmitter preamble length.

Parameters
[in]railHandle

A RAIL instance handle.

[in]length

The desired preamble length, in bits.

Returns

  • Status code indicating success of the function call.

To cause a transmission to use this alternate preamble length, specify RAIL_TX_OPTION_ALT_PREAMBLE_LEN in the txOptions parameter passed to the respective RAIL transmit API.

Note


Definition at line 3593 of file common/rail.h

Macro Definition Documentation#

RAIL_STOP_MODES_NONE#

#define RAIL_STOP_MODES_NONE
Value:
(0U)

Do not stop any radio operations.


Definition at line 3037 of file common/rail_types.h

RAIL_STOP_MODE_ACTIVE#

#define RAIL_STOP_MODE_ACTIVE
Value:
(1U << RAIL_STOP_MODE_ACTIVE_SHIFT)

Stop active radio operations only.


Definition at line 3039 of file common/rail_types.h

RAIL_STOP_MODE_PENDING#

#define RAIL_STOP_MODE_PENDING
Value:
(1U << RAIL_STOP_MODE_PENDING_SHIFT)

Stop pending radio operations.


Definition at line 3041 of file common/rail_types.h

RAIL_STOP_MODES_ALL#

#define RAIL_STOP_MODES_ALL
Value:
(0xFFU)

Stop all radio operations.


Definition at line 3043 of file common/rail_types.h

RAIL_TX_OPTIONS_NONE#

#define RAIL_TX_OPTIONS_NONE
Value:
0UL

A value representing no options enabled.


Definition at line 3075 of file common/rail_types.h

RAIL_TX_OPTIONS_DEFAULT#

#define RAIL_TX_OPTIONS_DEFAULT
Value:
RAIL_TX_OPTIONS_NONE

All options disabled by default.

This is the fastest TX option to apply.


Definition at line 3078 of file common/rail_types.h

RAIL_TX_OPTION_WAIT_FOR_ACK#

#define RAIL_TX_OPTION_WAIT_FOR_ACK
Value:
(1UL << RAIL_TX_OPTION_WAIT_FOR_ACK_SHIFT)

An option when auto-ACK has been configured, enabled, and not TX paused, to configure whether or not the transmitting node will listen for an ACK response.

If this is false, the isAck flag in RAIL_RxPacketDetails_t of a received packet will always be false. If auto-ACK is enabled, for instance using RAIL_ConfigAutoAck() or RAIL_IEEE802154_Init(), and if this option is false, the radio transitions to RAIL_AutoAckConfig_t::txTransitions's RAIL_StateTransitions_t::success state directly after transmitting a packet and does not wait for an ACK.


Definition at line 3092 of file common/rail_types.h

RAIL_TX_OPTION_REMOVE_CRC#

#define RAIL_TX_OPTION_REMOVE_CRC
Value:
(1UL << RAIL_TX_OPTION_REMOVE_CRC_SHIFT)

An option to remove CRC bytes from TX packets.

To receive packets when the sender has this option set true, set RAIL_RX_OPTION_IGNORE_CRC_ERRORS on the receive side.


Definition at line 3099 of file common/rail_types.h

RAIL_TX_OPTION_SYNC_WORD_ID#

#define RAIL_TX_OPTION_SYNC_WORD_ID
Value:
(1UL << RAIL_TX_OPTION_SYNC_WORD_ID_SHIFT)

An option to select which sync word is used during the transmission.

When two sync words are configured by the PHY or RAIL_ConfigSyncWords() enabling this option selects SYNC2 rather than SYNC1 for the upcoming transmit.

This option should not be used when only one sync word has been configured.

Note

  • There are a few special radio configurations (e.g. BLE Viterbi) that do not support transmitting different sync words.


Definition at line 3111 of file common/rail_types.h

RAIL_TX_OPTION_ANTENNA0#

#define RAIL_TX_OPTION_ANTENNA0
Value:
(1UL << RAIL_TX_OPTION_ANTENNA0_SHIFT)

An option to select antenna 0 for transmission.

If the antenna selection option is not set or if both antenna options are set, then the transmit will occur on either antenna depending on the last receive or transmit selection. This option is only valid on platforms that support Antenna Control and have been configured via RAIL_ConfigAntenna().

Note

  • These TX antenna options do not control the antenna used for Auto-ACK transmissions, which always occur on the same antenna used to receive the packet being acknowledged.


Definition at line 3124 of file common/rail_types.h

RAIL_TX_OPTION_ANTENNA1#

#define RAIL_TX_OPTION_ANTENNA1
Value:
(1UL << RAIL_TX_OPTION_ANTENNA1_SHIFT)

An option to select antenna 1 for transmission.

If the antenna selection option is not set or if both antenna options are set, then the transmit will occur on either antenna depending on the last receive or transmit selection. This option is only valid on platforms that support Antenna Control and have been configured via RAIL_ConfigAntenna().

Note

  • These TX antenna options do not control the antenna used for Auto-ACK transmissions, which always occur on the same antenna used to receive the packet being acknowledged.


Definition at line 3137 of file common/rail_types.h

RAIL_TX_OPTION_ALT_PREAMBLE_LEN#

#define RAIL_TX_OPTION_ALT_PREAMBLE_LEN
Value:
(1UL << RAIL_TX_OPTION_ALT_PREAMBLE_LEN_SHIFT)

An option to use the alternate preamble length established by RAIL_SetTxAltPreambleLength() for the transmission.

When not set, the PHY configuration's preamble length is used.


Definition at line 3144 of file common/rail_types.h

RAIL_TX_OPTION_CCA_PEAK_RSSI#

#define RAIL_TX_OPTION_CCA_PEAK_RSSI
Value:
(1UL << RAIL_TX_OPTION_CCA_PEAK_RSSI_SHIFT)

An option to use peak rather than average RSSI energy detected during CSMA's RAIL_CsmaConfig_t::ccaDuration or LBT's RAIL_LbtConfig_t::lbtDuration to determine whether the channel is clear or busy.

This option is only valid when calling one of the CCA transmit routines: RAIL_StartCcaCsmaTx, RAIL_StartCcaLbtTx, RAIL_StartScheduledCcaCsmaTx, or RAIL_StartScheduledCcaLbtTx.


Definition at line 3154 of file common/rail_types.h

RAIL_TX_OPTION_CCA_ONLY#

#define RAIL_TX_OPTION_CCA_ONLY
Value:
(1UL << RAIL_TX_OPTION_CCA_ONLY_SHIFT)

An option to only perform the CCA (CSMA/LBT) operation but not automatically transmit if the channel is clear.

This option is only valid when calling one of the CCA transmit routines: RAIL_StartCcaCsmaTx, RAIL_StartCcaLbtTx, RAIL_StartScheduledCcaCsmaTx, or RAIL_StartScheduledCcaLbtTx.

Application can then use the RAIL_EVENT_TX_CHANNEL_CLEAR to initiate transmit manually, e.g., giving it the opportunity to adjust outgoing packet data before the packet goes out.

Note

  • Configured state transitions to Rx or Idle are suspended during this CSMA/LBT operation. If packet reception occurs, the radio will return to the state it was in just prior to the CSMA/LBT operation when that reception (including any auto-ACK response) is complete.


Definition at line 3172 of file common/rail_types.h

RAIL_TX_OPTION_RESEND#

#define RAIL_TX_OPTION_RESEND
Value:
(1UL << RAIL_TX_OPTION_RESEND_SHIFT)

An option to resend packet at the beginning of the Transmit FIFO.

The packet to be resent must have been previously provided by RAIL_SetTxFifo() or RAIL_WriteTxFifo() passing true for the latter's reset parameter. It works by setting the transmit FIFO's read offset to the beginning of the FIFO while leaving its write offset intact. For this to work, RAIL_DataConfig_t::txMethod must be RAIL_DataMethod_t::PACKET_MODE (i.e., the packet can't exceed the Transmit FIFO's size), otherwise undefined behavior will result.

This option can also be used with RAIL_SetNextTxRepeat() to cause the repeated packet(s) to all be the same as the first.


Definition at line 3189 of file common/rail_types.h

RAIL_TX_OPTION_CONCURRENT_PHY_ID#

#define RAIL_TX_OPTION_CONCURRENT_PHY_ID
Value:
(1UL << RAIL_TX_OPTION_CONCURRENT_PHY_ID_SHIFT)

An option to specify which PHY is used to transmit in the case of concurrent mode.

Concurrent mode is only allowed on EFR32xG25 for some predefined combinations of Wi-SUN PHYs. When set/unset, the alternate/base PHY is used to transmit.


Definition at line 3196 of file common/rail_types.h

RAIL_TX_OPTIONS_ALL#

#define RAIL_TX_OPTIONS_ALL
Value:
0xFFFFFFFFUL

A value representing all possible options.


Definition at line 3199 of file common/rail_types.h

RAIL_MAX_LBT_TRIES#

#define RAIL_MAX_LBT_TRIES
Value:
(15U)

The maximum number of LBT/CSMA retries supported.


Definition at line 3276 of file common/rail_types.h

RAIL_MAX_CSMA_EXPONENT#

#define RAIL_MAX_CSMA_EXPONENT
Value:
(8U)

The maximum power-of-2 exponent for CSMA backoffs.


Definition at line 3282 of file common/rail_types.h

RAIL_CSMA_CONFIG_802_15_4_2003_2p4_GHz_OQPSK_CSMA#

#define RAIL_CSMA_CONFIG_802_15_4_2003_2p4_GHz_OQPSK_CSMA
Value:
{ \
/* CSMA per 802.15.4-2003 on 2.4 GHz OSPSK, commonly used by ZigBee */ \
.csmaMinBoExp = 3, /* 2^3-1 for 0..7 backoffs on 1st try */ \
.csmaMaxBoExp = 5, /* 2^5-1 for 0..31 backoffs on 3rd+ tries */ \
.csmaTries = 5, /* 5 tries overall (4 re-tries) */ \
.ccaThreshold = -75, /* 10 dB above sensitivity */ \
.ccaBackoff = 320, /* 20 symbols at 16 us/symbol */ \
.ccaDuration = 128, /* 8 symbols at 16 us/symbol */ \
.csmaTimeout = 0, /* No timeout */ \
}

RAIL_CsmaConfig_t initializer configuring CSMA per IEEE 802.15.4-2003 on 2.4 GHz OSPSK, commonly used by ZigBee.


Definition at line 3425 of file common/rail_types.h

RAIL_CSMA_CONFIG_SINGLE_CCA#

#define RAIL_CSMA_CONFIG_SINGLE_CCA
Value:
{ \
/* Perform a single CCA after 'fixed' delay */ \
.csmaMinBoExp = 0, /* Used for fixed backoff */ \
.csmaMaxBoExp = 0, /* Used for fixed backoff */ \
.csmaTries = 1, /* Single try */ \
.ccaThreshold = -75, /* Override if not desired choice */ \
.ccaBackoff = 0, /* No backoff (override with fixed value) */ \
.ccaDuration = 128, /* Override if not desired length */ \
.csmaTimeout = 0, /* no timeout */ \
}

RAIL_CsmaConfig_t initializer configuring a single CCA prior to TX.

It can be used to as a basis for implementing other channel access schemes with custom backoff delays. Users can override ccaBackoff with a fixed delay on each use.


Definition at line 3443 of file common/rail_types.h

RAIL_LBT_CONFIG_ETSI_EN_300_220_1_V2_4_1#

#define RAIL_LBT_CONFIG_ETSI_EN_300_220_1_V2_4_1
Value:
{ \
/* LBT per ETSI 300 220-1 V2.4.1 */ \
/* LBT time = random backoff of 0-5 ms in .5 ms increments plus 5 ms fixed */ \
.lbtMinBoRand = 0, /* */ \
.lbtMaxBoRand = 10, /* */ \
.lbtTries = RAIL_MAX_LBT_TRIES, /* the maximum supported */ \
.lbtThreshold = -87, /* */ \
.lbtBackoff = 500, /* 0.5 ms */ \
.lbtDuration = 5000, /* 5 ms */ \
.lbtTimeout = 0, /* No timeout (recommend user override) */ \
}

RAIL_LbtConfig_t initializer configuring LBT per ETSI 300 220-1 V2.4.1 for a typical Sub-GHz band.

To be practical, users should override lbtTries and/or lbtTimeout so channel access failure will be reported in a reasonable time frame rather than the unbounded time frame ETSI defined.


Definition at line 3545 of file common/rail_types.h

RAIL_LBT_CONFIG_ETSI_EN_300_220_1_V3_1_0#

#define RAIL_LBT_CONFIG_ETSI_EN_300_220_1_V3_1_0
Value:
{ \
/* LBT per ETSI 300 220-1 V3.1.0 */ \
/* LBT time = random backoff of 160-4960 us in 160 us increments */ \
.lbtMinBoRand = 1, /* */ \
.lbtMaxBoRand = 31, /* app-chosen; 31*lbtBackoff = 4960 us */ \
.lbtTries = RAIL_MAX_LBT_TRIES, /* the maximum supported */ \
.lbtThreshold = -85, /* 15 dB above Rx sensitivity per Table 45 */ \
.lbtDuragion = 160, /* 160 us per Table 48 Minimum CCA interval */ \
.lbtTimeout = 0, /* No timeout (recommend user override) */ \
}

RAIL_LbtConfig_t initializer configuring LBT per ETSI 300 220-1 V3.1.0 for a typical Sub-GHz band.

To be practical, users should override lbtTries and/or lbtTimeout so channel access failure will be reported in a reasonable time frame rather than the unbounded time frame ETSI defined.


Definition at line 3564 of file common/rail_types.h

RAIL_TX_REPEAT_OPTIONS_NONE#

#define RAIL_TX_REPEAT_OPTIONS_NONE
Value:
0U

A value representing no repeat options enabled.


Definition at line 3609 of file common/rail_types.h

RAIL_TX_REPEAT_OPTIONS_DEFAULT#

#define RAIL_TX_REPEAT_OPTIONS_DEFAULT
Value:
RAIL_TX_REPEAT_OPTIONS_NONE

All repeat options disabled by default.


Definition at line 3611 of file common/rail_types.h

RAIL_TX_REPEAT_OPTION_HOP#

#define RAIL_TX_REPEAT_OPTION_HOP
Value:
(1U << RAIL_TX_REPEAT_OPTION_HOP_SHIFT)

An option to configure whether or not to channel-hop before each repeated transmit.


Definition at line 3616 of file common/rail_types.h

RAIL_TX_REPEAT_OPTION_START_TO_START#

#define RAIL_TX_REPEAT_OPTION_START_TO_START
Value:
(1 << RAIL_TX_REPEAT_OPTION_START_TO_START_SHIFT)

An option to configure the delay between transmissions to be from start to start instead of end to start.

Delay must be long enough to cover the prior transmit's time.


Definition at line 3622 of file common/rail_types.h

RAIL_TX_REPEAT_INFINITE_ITERATIONS#

#define RAIL_TX_REPEAT_INFINITE_ITERATIONS
Value:
(0xFFFFU)

RAIL_TxRepeatConfig_t::iterations initializer configuring infinite repeated transmissions.


Definition at line 3668 of file common/rail_types.h