tal_tx.c File Reference

This file handles the frame transmission within the TAL.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include "pal.h"
#include "return_val.h"
#include "tal.h"
#include "ieee_const.h"
#include "tal_pib.h"
#include "tal_irq_handler.h"
#include "tal_constants.h"
#include "tal_tx.h"
#include "stack_config.h"
#include "bmm.h"
#include "qmm.h"
#include "tal_rx.h"
#include "tal_internal.h"
#include "at86rf233.h"
#include "mac_build_config.h"

Functions
void	handle_tx_end_irq (bool underrun_occured)
	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...
retval_t	tal_tx_frame (frame_info_t *tx_frame, csma_mode_t csma_mode, bool perform_frame_retry)
	Requests to TAL to transmit frame. More...
void	tx_done_handling (void)
	Implements the handling of the transmission end. More...

Variables
static uint8_t	tal_sw_retry_count
static bool	tal_sw_retry_no_csma_ca
static trx_trac_status_t	trx_trac_status

retval_t tal_tx_frame	(	frame_info_t *	tx_frame,
		csma_mode_t	csma_mode,
		bool	perform_frame_retry
	)

Requests to TAL to transmit frame.

This function is called by the MAC to deliver a frame to the TAL to be transmitted by the transceiver.

Parameters

tx_frame	Pointer to the frame_info_t structure or to frame array to be transmitted
csma_mode	Indicates mode of csma-ca to be performed for this frame
perform_frame_retry	Indicates whether to retries are to be performed for this frame

Returns

MAC_SUCCESS if the TAL has accepted the data from the MAC for frame transmission TAL_BUSY if the TAL is busy servicing the previous MAC request

References aUnitBackoffPeriod, CSMA_SLOTTED, last_frame_length, MAC_CHANNEL_ACCESS_FAILURE, mac_frame_ptr, MAC_INVALID_PARAMETER, MAC_SUCCESS, frame_info_tag::mpdu, NO_CSMA_WITH_IFS, NON_BEACON_NWK, pal_get_current_time(), send_frame(), tal_add_time_symbols(), TAL_BUSY, TAL_CONVERT_US_TO_SYMBOLS, tal_frame_to_tx, TAL_GET_BEACON_INTERVAL_TIME, TAL_IDLE, tal_pib, tal_state, and tal_sub_time_symbols().

Referenced by mac_awake_disassociate(), mac_build_and_tx_beacon(), mac_build_and_tx_data_req(), mac_handle_tx_null_data_frame(), mac_process_data_request(), mac_tx_coord_realignment_command(), mcps_data_request(), mlme_associate_request(), send_scan_cmd(), and tx_pan_id_conf_notif().

uint8_t tal_sw_retry_count

static

Referenced by handle_tx_end_irq(), and send_frame().

bool tal_sw_retry_no_csma_ca

static

Referenced by handle_tx_end_irq(), and send_frame().

trx_trac_status_t trx_trac_status

static

Referenced by handle_tx_end_irq(), and tx_done_handling().