TAL Initialization and reset

Performs initialization and reset functionalities of the transceiver.

Macros
#define	P_ON_TO_CLKM_ATTEMPTS
#define	SLEEP_TO_TRX_OFF_ATTEMPTS
#define	TRX_POLL_WAIT_TIME_US   (100)

Functions
static retval_t	internal_tal_reset (bool set_default_pib)
	Internal TAL reset function. More...
void	tal_generate_rand_seed (void)
	Generates a 16-bit random number used as initial seed for srand() More...
retval_t	tal_init (void)
	Initializes the TAL. More...
retval_t	tal_reset (bool set_default_pib)
	Resets TAL state machine and sets the default PIB values if requested. More...
static retval_t	tal_timer_init (void)
	Initializes all timers used by the TAL module by assigning id's to each of them. More...
static void	tal_timers_stop (void)
	Stops all initialized TAL timers. More...
static void	trx_config (void)
	Configures the transceiver. More...
static retval_t	trx_init (void)
	Initializes the transceiver. More...
static retval_t	trx_reset (void)
	Reset transceiver. More...

Variables
uint8_t	TAL_CSMA_BEACON_LOSS_TIMER
uint8_t	TAL_CSMA_CCA

#define P_ON_TO_CLKM_ATTEMPTS

Value:

((uint8_t) \
    (P_ON_TO_CLKM_AVAILABLE_MAX_US / TRX_POLL_WAIT_TIME_US))

Referenced by trx_init().

#define SLEEP_TO_TRX_OFF_ATTEMPTS

Value:

((uint8_t) \
    (SLEEP_TO_TRX_OFF_MAX_US / TRX_POLL_WAIT_TIME_US))

Referenced by trx_init(), and trx_reset().

#define TRX_POLL_WAIT_TIME_US   (100)

Referenced by trx_init(), and trx_reset().

static retval_t internal_tal_reset ( bool  set_default_pib )

static

Internal TAL reset function.

Parameters

set_default_pib

Defines whether PIB values need to be set to its default values

Returns

MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the current device part number and version number are correct; FAILURE otherwise

References CSMA_IDLE, FAILURE, init_tal_pib(), MAC_SUCCESS, tal_csma_state, tal_generate_rand_seed(), TAL_IDLE, tal_rx_on_required, tal_state, trx_config(), trx_reset(), and write_all_tal_pib_to_trx().

Referenced by tal_init(), and tal_reset().

void tal_generate_rand_seed

(

void

)

Generates a 16-bit random number used as initial seed for srand()

This function generates a 16-bit random number by means of using the Random Number Generator from the transceiver. The Random Number Generator generates 2-bit random values. These 2-bit random values are concatenated to the required 16-bit random seed. The generated random 16-bit number is feed into function srand() as initial seed. The transceiver state is initally set to RX_ON. After the completion of the random seed generation, the trancseiver is set to TRX_OFF.

Referenced by internal_tal_reset().

retval_t tal_init

(

void

)

Initializes the TAL.

This function is called to initialize the TAL. The transceiver is initialized, the TAL PIBs are set to their default values, and the TAL state machine is set to TAL_IDLE state.

Returns

MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the current device part number and version number are correct; FAILURE otherwise

Referenced by init_state_init(), and mac_init().

retval_t tal_reset

(

bool

set_default_pib

)

Resets TAL state machine and sets the default PIB values if requested.

Parameters

set_default_pib

Defines whether PIB values need to be set to its default values

Returns

MAC_SUCCESS if the transceiver state is changed to TRX_OFF FAILURE otherwise

Referenced by mac_reset(), set_transceiver_state(), and tfa_continuous_tx_stop().

static retval_t tal_timer_init ( void  )

static

Initializes all timers used by the TAL module by assigning id's to each of them.

References FAILURE, MAC_SUCCESS, pal_timer_get_id(), TAL_CSMA_BEACON_LOSS_TIMER, and TAL_CSMA_CCA.

Referenced by tal_init().

static void tal_timers_stop ( void  )

static

Stops all initialized TAL timers.

References pal_timer_stop(), TAL_CSMA_BEACON_LOSS_TIMER, and TAL_CSMA_CCA.

Referenced by tal_reset().

static void trx_config ( void  )

static

Configures the transceiver.

This function is called to configure the transceiver after reset.

References ANT_DIV_ENABLE, ANT_EXT_SW_ENABLE, ANTENNA_DEFAULT, CLKM_1MHZ, CLKM_SHA_DISABLE, IRQ_MASK_MODE_ON, PA_EXT_ENABLE, PAD_CLKM_2_MA, PD_ACK_BIT_SET_ENABLE, RG_CSMA_SEED_0, RG_IRQ_MASK, RX_SAFE_MODE_ENABLE, SLEEP_MODE_1, SR_AACK_SET_PD, SR_ANT_CTRL, SR_ANT_DIV_EN, SR_ANT_EXT_SW_EN, SR_CCA_ED_THRES, SR_CLKM_CTRL, SR_CLKM_SHA_SEL, SR_CSMA_SEED_1, SR_IRQ_2_EXT_EN, SR_IRQ_MASK_MODE, SR_PA_EXT_EN, SR_PAD_IO_CLKM, SR_PDT_THRES, SR_RX_SAFE_MODE, tal_trx_sleep(), tal_trx_wakeup(), THRES_ANT_DIV_ENABLE, TIMESTAMPING_ENABLE, trx_bit_write(), TRX_IRQ_DEFAULT, and trx_reg_write().

Referenced by internal_tal_reset(), and set_trx_state().

static retval_t trx_init ( void  )

static

Initializes the transceiver.

This function is called to initialize the transceiver.

Returns

MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the current device part number and version number are correct; FAILURE otherwise

References Assert, AT86RF231_PART_NUM, AT86RF231_VERSION_NUM, CMD_TRX_OFF, FAILURE, MAC_SUCCESS, P_ON_TO_CLKM_ATTEMPTS, P_ON_TO_CLKM_AVAILABLE_TYP_US, pal_timer_delay, RG_PART_NUM, RG_TRX_STATE, RG_VERSION_NUM, RST_PULSE_WIDTH_US, SLEEP_TO_TRX_OFF_ATTEMPTS, SR_TRX_STATUS, tal_trx_status, trx_bit_read(), TRX_OFF, TRX_POLL_WAIT_TIME_US, trx_reg_read(), trx_reg_write(), TRX_RST_HIGH, TRX_RST_LOW, and TRX_SLP_TR_LOW.

Referenced by tal_init().

static retval_t trx_reset ( void  )

static

Reset transceiver.

Returns

MAC_SUCCESS if the transceiver state is changed to TRX_OFF FAILURE otherwise

References Assert, FAILURE, MAC_SUCCESS, pal_timer_delay, RST_PULSE_WIDTH_US, SLEEP_TO_TRX_OFF_ATTEMPTS, SLEEP_TO_TRX_OFF_TYP_US, SR_TRX_STATUS, stb_restart(), tal_trx_status, trx_bit_read(), TRX_OFF, TRX_POLL_WAIT_TIME_US, TRX_RST_HIGH, TRX_RST_LOW, and TRX_SLP_TR_LOW.

Referenced by internal_tal_reset().

uint8_t TAL_CSMA_BEACON_LOSS_TIMER

Referenced by slotted_csma_state_handling(), start_beacon_loss_timer(), tal_timer_init(), tal_timers_stop(), and tx_done().

uint8_t TAL_CSMA_CCA

Referenced by csma_backoff_calculation(), tal_timer_init(), and tal_timers_stop().