Slotted CSMA Module

Transmits data using Slotted CSMA/CA mechanism.

Typedefs
typedef enum csma_state_tag	csma_state_t

Enumerations
enum	csma_state_tag {   CSMA_IDLE = 0,   BACKOFF_WAITING_FOR_CCA_TIMER,   BACKOFF_WAITING_FOR_BEACON,   CSMA_ACCESS_FAILURE,   FRAME_SENDING,   TX_DONE_SUCCESS,   TX_DONE_FRAME_PENDING,   TX_DONE_NO_ACK,   NO_BEACON_TRACKING,   CSMA_HANDLE_BEACON }

Functions
uint16_t	calc_frame_transmit_duration (uint8_t *phy_frame)
	Calculates the entire transaction duration. More...
bool	slotted_csma_start (bool perform_frame_retry)
	Starts slotted CSMA. More...
void	slotted_csma_state_handling (void)
	State machine handling slotted CSMA. More...

typedef enum csma_state_tag csma_state_t

enum csma_state_tag

Enumerator
CSMA_IDLE
BACKOFF_WAITING_FOR_CCA_TIMER
BACKOFF_WAITING_FOR_BEACON
CSMA_ACCESS_FAILURE
FRAME_SENDING
TX_DONE_SUCCESS
TX_DONE_FRAME_PENDING
TX_DONE_NO_ACK
NO_BEACON_TRACKING
CSMA_HANDLE_BEACON

uint16_t calc_frame_transmit_duration

(

uint8_t *

phy_frame

)

Calculates the entire transaction duration.

octets

symbols

References ACK_FRAME_LEN, aMaxSIFSFrameSize, aTurnaroundTime, aUnitBackoffPeriod, CONVERT_OCTETS_TO_SYM, FCF_ACK_REQUEST, macMinLIFSPeriod_def, macMinSIFSPeriod_def, PHY_OVERHEAD, PL_POS_FCF_1, and TAL_PSDU_US_PER_OCTET.

Referenced by handle_gts_data_req().

bool slotted_csma_start

(

bool

perform_frame_retry

)

Starts slotted CSMA.

References BE, calculate_transaction_duration(), check_beacon_reception(), csma_backoff_calculation(), csma_param_init(), number_of_tx_retries, PIN_CSMA_START, remaining_backoff_periods, tal_pib, TAL_SLOTTED_CSMA, and tal_state.

Referenced by tal_tx_frame().

void slotted_csma_state_handling

(

void

)

State machine handling slotted CSMA.

References Assert, BACKOFF_WAITING_FOR_BEACON, BACKOFF_WAITING_FOR_CCA_TIMER, BE, CMD_RX_AACK_ON, CSMA_ACCESS_FAILURE, csma_backoff_calculation(), CSMA_HANDLE_BEACON, FRAME_SENDING, MAC_CHANNEL_ACCESS_FAILURE, MAC_NO_ACK, MAC_SUCCESS, macMaxCSMABackoffs, NB, NO_BEACON_TRACKING, number_of_tx_retries, pal_timer_stop(), PIN_BEACON_LOSS_TIMER_END, PIN_NO_ACK_END, PIN_WAITING_FOR_BEACON_END, remaining_backoff_periods, set_trx_state(), TAL_CSMA_BEACON_LOSS_TIMER, tal_csma_state, TAL_FRAME_PENDING, tal_pib, tx_done(), TX_DONE_FRAME_PENDING, TX_DONE_NO_ACK, and TX_DONE_SUCCESS.

Referenced by tal_task().