TAL Frame Transmission Unit

The Frame Transmission Unit generates and transmits the frames using PAL .

Modules
	TAL CSMA/CA Module
	Performs channel access mechanism for frame transmission For Detailed information refer CSMA-CA algorithm section of IEEE Std 802.15.4-2006.

Functions
void	handle_tx_end_irq (void)
	Handles interrupts issued due to end of transmission. More...
void	send_frame (csma_mode_t csma_mode, bool tx_retries)
	Sends frame using trx features to handle CSMA and re-transmissions. More...
void	tx_done_handling (void)
	Implements the handling of the transmission end. More...

void handle_tx_end_irq

(

void

)

Handles interrupts issued due to end of transmission.

Parameters

underrun_occured

true if under-run has occurred

References Assert, CMD_PLL_ON, CMD_RX_AACK_ON, PIN_ACK_OK_END, PIN_ACK_OK_START, PIN_ACK_WAITING_END, PIN_NO_ACK_START, PIN_TX_END, set_trx_state(), SR_TRAC_STATUS, tal_rx_buffer, tal_rx_on_required, tal_state, TAL_TX_AUTO, TAL_TX_DONE, TRAC_CHANNEL_ACCESS_FAILURE, TRAC_INVALID, TRAC_NO_ACK, TRAC_SUCCESS, TRAC_SUCCESS_DATA_PENDING, trx_bit_read, and trx_trac_status.

Referenced by trx_tx_end_handler_cb().

void send_frame	(	csma_mode_t	csma_mode,
		bool	tx_retries
	)

Sends frame using trx features to handle CSMA and re-transmissions.

Parameters

csma_mode	Indicates the CSMA mode used
tx_retries	Flag indicating if transmission retries are requested by the MAC layer

References aMaxSIFSFrameSize, CMD_TX_ARET_ON, ENTER_CRITICAL_REGION, IRQ_PROCESSING_DLY_US, last_frame_length, LEAVE_CRITICAL_REGION, macMinLIFSPeriod_def, macMinSIFSPeriod_def, NO_CSMA_NO_IFS, NO_CSMA_WITH_IFS, pal_timer_delay, PAL_WAIT_65_NS, PRE_TX_DURATION_US, RG_CSMA_BE, set_trx_state(), SR_MAX_CSMA_RETRIES, SR_MAX_FRAME_RETRIES, TAL_CONVERT_SYMBOLS_TO_US, tal_frame_to_tx, tal_pib, tal_state, TAL_TX_AUTO, trx_bit_write, trx_frame_write, TRX_IRQ_DELAY_US, trx_reg_write, TRX_SLP_TR_HIGH, TRX_SLP_TR_LOW, and TX_ARET_ON.

Referenced by tal_tx_frame().

void tx_done_handling

(

void

)

Implements the handling of the transmission end.

This function handles the callback for the transmission end.

References Assert, FAILURE, MAC_CHANNEL_ACCESS_FAILURE, mac_frame_ptr, MAC_NO_ACK, MAC_SUCCESS, pal_tx_timestamp, TAL_FRAME_PENDING, TAL_IDLE, tal_state, tal_tx_frame_done_cb(), TRAC_CHANNEL_ACCESS_FAILURE, TRAC_INVALID, TRAC_NO_ACK, TRAC_SUCCESS, TRAC_SUCCESS_DATA_PENDING, and trx_trac_status.

Referenced by tal_task().