本文整理汇总了C++中pal_timer_delay函数的典型用法代码示例。如果您正苦于以下问题：C++ pal_timer_delay函数的具体用法？C++ pal_timer_delay怎么用？C++ pal_timer_delay使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了pal_timer_delay函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: trx_init
/**
* @brief Initializes the transceiver
*
* This function is called to initialize the transceiver.
*
* @return MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the
* current device part number and version number are correct;
* FAILURE otherwise
*/
static retval_t trx_init(void)
{
tal_trx_status_t trx_status;
uint8_t poll_counter = 0;
PAL_RST_HIGH();
PAL_SLP_TR_LOW();
/* Wait typical time of timer TR1. */
pal_timer_delay(P_ON_TO_CLKM_AVAILABLE_TYP_US);
/* Apply reset pulse */
PAL_RST_LOW();
pal_timer_delay(RST_PULSE_WIDTH_US);
PAL_RST_HIGH();
#if !(defined FPGA_EMULATION)
do
{
/* Wait not more than max. value of TR1. */
if (poll_counter == P_ON_TO_CLKM_ATTEMPTS)
{
return FAILURE;
}
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
poll_counter++;
/* Check if AT86RF233 is connected; omit manufacturer id check */
}
while (pal_trx_reg_read(RG_PART_NUM) != PART_NUM_AT86RF233);
#endif /* !defined FPGA_EMULATION */
/* Verify that TRX_OFF can be written */
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
/* Verify that the trx has reached TRX_OFF. */
poll_counter = 0;
do
{
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
trx_status = (tal_trx_status_t)pal_trx_bit_read(SR_TRX_STATUS);
/* Wait not more than max. value of TR15. */
if (poll_counter == P_ON_TO_TRX_OFF_ATTEMPTS)
{
#if (DEBUG > 0)
pal_alert();
#endif
return FAILURE;
}
poll_counter++;
}
while (trx_status != TRX_OFF);
tal_trx_status = TRX_OFF;
return MAC_SUCCESS;
}
开发者ID:subpos，项目名称:atmel_ranging_toolbox_zigbit，代码行数:69，代码来源:tal_init.c
示例2: sw_controlled_csma
/**
* \brief Handles software-controlled CSMA.
*
* \param csma_mode CSMA Mode; eg. ED or CS
* \param retransmit true if frame re-transmission is requested
*/
static inline void sw_controlled_csma(csma_mode_t csma_mode, bool retransmit)
{
if (retransmit) {
number_of_tx_retries = 0; /* actual number of retries */
} else {
/* no further retries */
number_of_tx_retries = tal_pib.MaxFrameRetries;
}
/* Handle interframe spacing */
if (csma_mode == NO_CSMA_WITH_IFS) {
if (last_frame_length > aMaxSIFSFrameSize) {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinLIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
} else {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinSIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
}
}
if ((csma_mode == NO_CSMA_WITH_IFS) || (csma_mode == NO_CSMA_NO_IFS)) {
tx_frame();
} else {
csma_start();
}
}
开发者ID:InSoonPark，项目名称:asf，代码行数:36，代码来源:tal_tx.c
示例3: trx_reset
/**
* @brief Reset transceiver
*
* @return MAC_SUCCESS if the transceiver state is changed to TRX_OFF
* FAILURE otherwise
*/
static retval_t trx_reset(void)
{
tal_trx_status_t trx_status;
uint8_t poll_counter = 0;
#if (EXTERN_EEPROM_AVAILABLE == 1)
uint8_t xtal_trim_value;
#endif
/* Get trim value for 16 MHz xtal; needs to be done before reset */
#if (EXTERN_EEPROM_AVAILABLE == 1)
pal_ps_get(EXTERN_EEPROM, EE_XTAL_TRIM_ADDR, 1, &xtal_trim_value);
#endif
/* trx might sleep, so wake it up */
PAL_SLP_TR_LOW();
pal_timer_delay(SLEEP_TO_TRX_OFF_TYP_US);
/* Apply reset pulse */
PAL_RST_LOW();
pal_timer_delay(RST_PULSE_WIDTH_US);
PAL_RST_HIGH();
/* verify that trx has reached TRX_OFF */
do
{
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
trx_status = (tal_trx_status_t)pal_trx_bit_read(SR_TRX_STATUS);
/* Wait not more than max. value of TR2. */
if (poll_counter == SLEEP_TO_TRX_OFF_ATTEMPTS)
{
#if (DEBUG > 0)
pal_alert();
#endif
return FAILURE;
}
poll_counter++;
}
while (trx_status != TRX_OFF);
tal_trx_status = TRX_OFF;
// Write 16MHz xtal trim value to trx.
// It's only necessary if it differs from the reset value.
#if (EXTERN_EEPROM_AVAILABLE == 1)
if (xtal_trim_value != 0x00)
{
pal_trx_bit_write(SR_XTAL_TRIM, xtal_trim_value);
}
#endif
return MAC_SUCCESS;
}
开发者ID:nandojve，项目名称:embedded，代码行数:61，代码来源:tal_init.c
示例4: trx_init
/**
* @brief Initializes the transceiver
*
* This function is called to initialize the transceiver.
*
* @return MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the
* current device part number and version number are correct;
* FAILURE otherwise
*/
static retval_t trx_init(void)
{
tal_trx_status_t trx_status;
uint8_t poll_counter = 0;
/* Ensure control lines have correct levels. */
PAL_RST_HIGH();
PAL_SLP_TR_LOW();
pal_timer_delay(P_ON_TO_CLKM_AVAILABLE_TYP_US);
/* Apply reset pulse */
PAL_RST_LOW();
pal_timer_delay(RST_PULSE_WIDTH_US);
PAL_RST_HIGH();
/* Verify that the trx has reached TRX_OFF. */
poll_counter = 0;
do
{
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
trx_status = (tal_trx_status_t)pal_trx_bit_read(SR_TRX_STATUS);
/* Wait not more than max. value of TR2. */
if (poll_counter == RESET_TO_TRX_OFF_ATTEMPTS)
{
#if (DEBUG > 0)
pal_alert();
#endif
return FAILURE;
}
poll_counter++;
}
while (trx_status != TRX_OFF);
tal_trx_status = TRX_OFF;
#if !defined(FPGA_EMULATION)
/* Check if actually running on an ATmegaRFR2 device. */
if (ATMEGARFR2_PART_NUM != pal_trx_reg_read(RG_PART_NUM))
{
return FAILURE;
}
#endif
return MAC_SUCCESS;
}
开发者ID:nandojve，项目名称:embedded，代码行数:57，代码来源:tal_init.c
示例5: trigger_cca_meaurement
/**
* @brief Triggers CCA measurement at transceiver
*
* @param trx_id Transceiver identifier
*/
static void trigger_cca_meaurement(trx_id_t trx_id)
{
/* Trigger CCA measurement */
uint16_t reg_offset = RF_BASE_ADDR_OFFSET * trx_id;
/* Cancel any ongoing reception and ensure that TXPREP is reached. */
if (trx_state[trx_id] == RF_TRXOFF) {
switch_to_txprep(trx_id);
}
/* Disable BB */
trx_bit_write(reg_offset + SR_BBC0_PC_BBEN, 0);
/* Enable IRQ EDC */
trx_bit_write(reg_offset + SR_RF09_IRQM_EDC, 1);
/* CCA duration is already set by default; see apply_phy_settings() */
/* Setup and start energy detection */
trx_bit_write(reg_offset + SR_RF09_AGCC_FRZC, 0); /* Ensure AGC is not
* hold */
if (trx_state[trx_id] != RF_RX) {
trx_reg_write(reg_offset + RG_RF09_CMD, RF_RX);
pal_timer_delay(tal_pib[trx_id].agc_settle_dur); /* allow
* filters to
* settle */
trx_state[trx_id] = RF_RX;
}
tx_state[trx_id] = TX_CCA;
/* Start single ED measurement; use reg_write - it's the only
*subregister */
trx_reg_write(reg_offset + RG_RF09_EDC, RF_EDSINGLE);
/* Wait for EDC IRQ and handle it within cca_done_handling() */
}
开发者ID:thegeek82000，项目名称:asf，代码行数:40，代码来源:tal_auto_csma.c
示例6: tfa_ed_sample
/**
* @brief Perform a single ED measurement
*
* @return ed_value Result of the measurement
* If the build switch TRX_REG_RAW_VALUE is defined, the transceiver's
* register value is returned.
*/
uint8_t tfa_ed_sample(void)
{
trx_irq_reason_t trx_irq_cause;
uint8_t ed_value;
tal_trx_status_t trx_status;
/* Make sure that receiver is switched on. */
do
{
trx_status = set_trx_state(CMD_RX_ON);
}
while (trx_status != RX_ON);
/*
* Disable the transceiver interrupts to prevent frame reception
* while performing ED scan.
*/
pal_trx_bit_write(SR_RX_PDT_DIS, RX_DISABLE);
/* Write dummy value to start measurement. */
pal_trx_reg_write(RG_PHY_ED_LEVEL, 0xFF);
/* Wait for ED measurement completion. */
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(ED_SAMPLE_DURATION_SYM));
do
{
trx_irq_cause = (trx_irq_reason_t)pal_trx_reg_read(RG_IRQ_STATUS);
}
while ((trx_irq_cause & TRX_IRQ_CCA_ED_READY) != TRX_IRQ_CCA_ED_READY);
/* Read the ED Value. */
ed_value = pal_trx_reg_read(RG_PHY_ED_LEVEL);
#ifndef TRX_REG_RAW_VALUE
/*
* Scale ED result.
* Clip values to 0xFF if > -35dBm
*/
if (ed_value > CLIP_VALUE_REG)
{
ed_value = 0xFF;
}
else
{
ed_value = (uint8_t)(((uint16_t)ed_value * 0xFF) / CLIP_VALUE_REG);
}
#endif
/* Clear IRQ register */
pal_trx_reg_read(RG_IRQ_STATUS);
/* Enable reception agian */
pal_trx_bit_write(SR_RX_PDT_DIS, RX_ENABLE);
/* Switch receiver off again */
set_trx_state(CMD_TRX_OFF);
return ed_value;
}
开发者ID:nandojve，项目名称:embedded，代码行数:64，代码来源:tfa.c
示例7: tfa_cca_perform
/**
* @brief Perform a CCA
*
* This function performs a CCA request.
*
* @return phy_enum_t PHY_IDLE or PHY_BUSY
*/
phy_enum_t tfa_cca_perform(void)
{
tal_trx_status_t trx_status;
uint8_t cca_status;
uint8_t cca_done;
/* Ensure that trx is not in SLEEP for register access */
do
{
trx_status = set_trx_state(CMD_TRX_OFF);
}
while (trx_status != TRX_OFF);
/* no interest in receiving frames while doing CCA */
pal_trx_bit_write(SR_RX_PDT_DIS, RX_DISABLE); // disable frame reception indication
/* Set trx to rx mode. */
do
{
trx_status = set_trx_state(CMD_RX_ON);
}
while (trx_status != RX_ON);
/* Start CCA */
pal_trx_bit_write(SR_CCA_REQUEST, CCA_START);
/* wait until CCA is done */
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(CCA_DURATION_SYM));
do
{
/* poll until CCA is really done */
cca_done = pal_trx_bit_read(SR_CCA_DONE);
}
while (cca_done != CCA_COMPLETED);
set_trx_state(CMD_TRX_OFF);
/* Check if channel was idle or busy. */
if (pal_trx_bit_read(SR_CCA_STATUS) == CCA_CH_IDLE)
{
cca_status = PHY_IDLE;
}
else
{
cca_status = PHY_BUSY;
}
/* Enable frame reception again. */
pal_trx_bit_write(SR_RX_PDT_DIS, RX_ENABLE);
return (phy_enum_t)cca_status;
}
开发者ID:nandojve，项目名称:embedded，代码行数:59，代码来源:tfa.c
示例8: adc_wait_8mhz
/**
* @brief This function waits until the adc common mode is settled
*
* After the ADC clock has been turned on, the common mode voltage in the ADC
* need some time to settle. The time it takes equals one dummy conversion.
* Instead of doing a dummy conversion this function waits until the common
* mode is settled.
*
* @param adc Pointer to ADC module register section
*/
void adc_wait_8mhz(ADC_t * adc)
{
/* Store old prescaler value. */
uint8_t prescaler_val = adc->PRESCALER;
/* Set prescaler value to minimum value. */
adc->PRESCALER = ADC_PRESCALER_DIV4_gc;
/* Wait 4 * COMMON_MODE_CYCLES for common mode to settle. */
pal_timer_delay(4 * COMMON_MODE_CYCLES);
/* Set prescaler to old value*/
adc->PRESCALER = prescaler_val;
}
开发者ID:mknapik，项目名称:avr-MAC，代码行数:24，代码来源:pal_board.c
示例9: pal_alert
/*
* @brief Alert indication
*
* This Function can be used by any application to indicate an error condition.
* The function is blocking and does never return.
*/
void pal_alert(void)
{
#if (DEBUG > 0)
bool debug_flag = false;
#endif
ALERT_INIT();
while (1)
{
pal_timer_delay(0xFFFF);
ALERT_INDICATE();
#if (DEBUG > 0)
/* Used for debugging purposes only */
if (debug_flag == true)
{
break;
}
#endif
}
}
开发者ID:nandojve，项目名称:embedded，代码行数:27，代码来源:pal.c
示例10: set_trx_state
//.........这里部分代码省略.........
/* Clear existing interrupts */
pal_trx_reg_read(RG_IRQ_STATUS);
/*
* Enable Awake_end interrupt.
* This is used for save wake-up from sleep later.
*/
pal_trx_bit_write(SR_IRQ_MASK, TRX_IRQ_4_CCA_ED_DONE);
#ifdef ENABLE_DEEP_SLEEP
if (trx_cmd == CMD_DEEP_SLEEP)
{
pal_trx_reg_write(RG_TRX_STATE, CMD_PREP_DEEP_SLEEP);
tal_trx_status = TRX_DEEP_SLEEP;
}
else
{
/*
* Enable Awake_end interrupt.
* This is used for save wake-up from sleep later.
*/
pal_trx_bit_write(SR_IRQ_MASK, TRX_IRQ_4_CCA_ED_DONE);
tal_trx_status = TRX_SLEEP;
}
#else
/*
* Enable Awake_end interrupt.
* This is used for save wake-up from sleep later.
*/
pal_trx_bit_write(SR_IRQ_MASK, TRX_IRQ_4_CCA_ED_DONE);
tal_trx_status = TRX_SLEEP;
#endif
PAL_WAIT_1_US();
PAL_SLP_TR_HIGH();
pal_timer_delay(TRX_OFF_TO_SLEEP_TIME_CLKM_CYCLES);
/* Transceiver register cannot be read during TRX_SLEEP or DEEP_SLEEP. */
return tal_trx_status;
case CMD_TRX_OFF:
switch (tal_trx_status)
{
case TRX_OFF:
break;
default:
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
PAL_WAIT_1_US();
break;
}
break;
case CMD_FORCE_TRX_OFF:
switch (tal_trx_status)
{
case TRX_OFF:
break;
default:
pal_trx_reg_write(RG_TRX_STATE, CMD_FORCE_TRX_OFF);
PAL_WAIT_1_US();
break;
}
break;
case CMD_PLL_ON:
switch (tal_trx_status)
{
开发者ID:johncobb，项目名称:xmega_macless_rtb_demo，代码行数:67，代码来源:tal.c
示例11: tfa_cca_perform
/**
* @brief Perform a CCA
*
* This blocking function performs a CCA request.
*
* @return phy_enum_t PHY_IDLE or PHY_BUSY
*/
phy_enum_t tfa_cca_perform(trx_id_t trx_id)
{
phy_enum_t ret;
if (tal_state[trx_id] != TAL_IDLE) {
ret = PHY_BUSY;
} else {
rf_cmd_state_t previous_state = trx_state[trx_id];
if (trx_state[trx_id] == RF_TRXOFF) {
switch_to_txprep(trx_id);
}
if (trx_state[trx_id] != RF_RX) {
switch_to_rx(trx_id);
pal_timer_delay(tal_pib[trx_id].agc_settle_dur); /*
* allow
* filters
* to
* settle */
}
/* Disable BB */
uint16_t reg_offset = RF_BASE_ADDR_OFFSET * trx_id;
trx_bit_write(reg_offset + SR_BBC0_PC_BBEN, 0);
#ifndef BASIC_MODE
/* Enable EDC interrupt */
trx_bit_write(reg_offset + SR_RF09_IRQM_EDC, 1);
#endif
/* Start single ED measurement; use reg_write - it's the only
*subregister */
tal_state[trx_id] = TAL_TFA_CCA;
#ifdef IQ_RADIO
/* Enable EDC interrupt */
pal_dev_bit_write(RF215_RF, reg_offset + SR_RF09_IRQM_EDC, 1);
pal_dev_reg_write(RF215_RF, reg_offset + RG_RF09_EDC,
RF_EDSINGLE);
#else
trx_reg_write(reg_offset + RG_RF09_EDC, RF_EDSINGLE);
#endif
/* Wait until measurement is completed */
while (TAL_RF_IS_IRQ_SET(trx_id, RF_IRQ_EDC) == false) {
}
TAL_RF_IRQ_CLR(trx_id, RF_IRQ_EDC);
#ifndef BASIC_MODE
/* Disable EDC interrupt again */
trx_bit_write(reg_offset + SR_RF09_IRQM_EDC, 0);
#endif
#ifdef IQ_RADIO
pal_dev_bit_write(RF215_RF, reg_offset + SR_RF09_IRQM_EDC, 0);
#endif
/* Since it is a blocking function, restore TAL state */
tal_state[trx_id] = TAL_IDLE;
switch_to_txprep(trx_id); /* Leave Rx mode */
/* Switch BB on again */
trx_bit_write(reg_offset + SR_BBC0_PC_BBEN, 1);
/* Capture ED value for current frame / ED scan */
#ifdef IQ_RADIO
tal_current_ed_val[trx_id] = pal_dev_reg_read(RF215_RF,
reg_offset +
RG_RF09_EDV);
#else
tal_current_ed_val[trx_id] = trx_reg_read(
reg_offset + RG_RF09_EDV);
#endif
if (tal_current_ed_val[trx_id] < tal_pib[trx_id].CCAThreshold) {
/* Idle */
ret = PHY_IDLE;
} else {
/* Busy */
ret = PHY_BUSY;
}
/* Restore previous trx state */
if (previous_state == RF_RX) {
switch_to_rx(trx_id);
} else {
/* Switch to TRXOFF */
trx_reg_write(reg_offset + RG_RF09_CMD, RF_TRXOFF);
#ifdef IQ_RADIO
pal_dev_reg_write(RF215_RF, reg_offset + RG_RF09_CMD,
RF_TRXOFF);
#endif
trx_state[trx_id] = RF_TRXOFF;
}
}
//.........这里部分代码省略.........
开发者ID:thegeek82000，项目名称:asf，代码行数:101，代码来源:tfa.c
示例12: send_frame
/*
* \brief Sends frame
*
* \param use_csma Flag indicating if CSMA is requested
* \param tx_retries Flag indicating if transmission retries are requested
* by the MAC layer
*/
void send_frame(csma_mode_t csma_mode, bool tx_retries)
{
tal_trx_status_t trx_status;
/* Configure tx according to tx_retries */
if (tx_retries) {
trx_bit_write(SR_MAX_FRAME_RETRIES,
tal_pib.MaxFrameRetries);
} else {
trx_bit_write(SR_MAX_FRAME_RETRIES, 0);
}
/* Configure tx according to csma usage */
if ((csma_mode == NO_CSMA_NO_IFS) || (csma_mode == NO_CSMA_WITH_IFS)) {
if (tx_retries) {
trx_bit_write(SR_MAX_CSMA_RETRIES,
tal_pib.MaxCSMABackoffs);
trx_reg_write(RG_CSMA_BE, 0x00);
} else {
trx_bit_write(SR_MAX_CSMA_RETRIES, 7);
}
} else {
trx_reg_write(RG_CSMA_BE,
((tal_pib.MaxBE << 4) | tal_pib.MinBE));
trx_bit_write(SR_MAX_CSMA_RETRIES, tal_pib.MaxCSMABackoffs);
}
do {
trx_status = set_trx_state(CMD_TX_ARET_ON);
} while (trx_status != TX_ARET_ON);
/* Handle interframe spacing */
if (csma_mode == NO_CSMA_WITH_IFS) {
if (last_frame_length > aMaxSIFSFrameSize) {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinLIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
last_frame_length = 0;
} else {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinSIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
last_frame_length = 0;
}
} else {
/*
* If no delay is applied after switching to TX_ARET_ON,
* a short delay is required that allows that a pending TX_END
* IRQ for
* ACK transmission gets served.
*/
pal_timer_delay(TRX_IRQ_DELAY_US);
}
ENTER_CRITICAL_REGION(); /* prevent from buffer underrun */
/* Toggle the SLP_TR pin triggering transmission. */
TRX_SLP_TR_HIGH();
PAL_WAIT_65_NS();
TRX_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
trx_frame_write(tal_frame_to_tx, tal_frame_to_tx[0] - 1);
tal_state = TAL_TX_AUTO;
LEAVE_CRITICAL_REGION();
}
开发者ID:thegeek82000，项目名称:asf，代码行数:88，代码来源:tal_tx.c
示例13: trx_init
/**
* \brief Initializes the transceiver
*
* This function is called to initialize the transceiver.
*
* \return MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the
* current device part number and version number are correct;
* FAILURE otherwise
*/
static retval_t trx_init(void)
{
volatile tal_trx_status_t test_status;
uint8_t poll_counter = 0;
/* Wait typical time of timer TR1. */
pal_timer_delay(P_ON_TO_CLKM_AVAILABLE_TYP_US);
/* make sure SPI is working properly */
/* while ((tal_trx_status_t)trx_bit_read(SR_TRX_STATUS) != P_ON); */
/* Apply reset pulse. Ensure control lines have correct levels (SEL is
* already set in TRX_INIT().
*/
TRX_RST_LOW();
TRX_SLP_TR_LOW();
pal_timer_delay(RST_PULSE_WIDTH_US);
TRX_RST_HIGH();
/* Wait typical time of timer TR13. */
pal_timer_delay(30);
test_status = (tal_trx_status_t)trx_bit_read(SR_TRX_STATUS);
/* Dummy assignment, to avoid compiler warning */
test_status = test_status;
#if !(defined FPGA_EMULATION)
do {
/* Wait not more than max. value of TR1. */
if (poll_counter == P_ON_TO_CLKM_ATTEMPTS) {
return FAILURE;
}
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
poll_counter++;
/* Check if AT86RF212B is connected; omit manufacturer id check
**/
} while (trx_reg_read(RG_PART_NUM) != PART_NUM_AT86RF212B);
#endif /* !defined FPGA_EMULATION */
/* Set trx to off mode */
trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
/* \todo remove this line?! */
while ((tal_trx_status_t)trx_bit_read(SR_TRX_STATUS) != TRX_OFF) {
}
#if (_DEBUG_ > 0)
tal_trx_status_t trx_status;
trx_status = (tal_trx_status_t)trx_bit_read(SR_TRX_STATUS);
if (trx_status != TRX_OFF) {
return FAILURE;
}
#endif
trx_reg_write(RG_IRQ_MASK, TRX_NO_IRQ);
tal_trx_status = TRX_OFF;
return MAC_SUCCESS;
}
开发者ID:ThucVD2704，项目名称:femto-usb-blink-example，代码行数:72，代码来源:tal_init.c
示例14: set_trx_state
/*
* \brief Sets transceiver state
*
* \param trx_cmd needs to be one of the trx commands
*
* \return current trx state
*/
tal_trx_status_t set_trx_state(trx_cmd_t trx_cmd)
{
if (tal_trx_status == TRX_SLEEP) {
/*
* Since the wake-up procedure relies on the Awake IRQ and
* the global interrupts may be disabled at this point of time,
* we need to make sure that the global interrupts are enabled
* during wake-up procedure.
* Once the TRX is awake, the original state of the global
*interrupts
* will be restored.
*/
/* Reset wake-up interrupt flag. */
if (CMD_SLEEP == trx_cmd) {
return TRX_SLEEP;
}
tal_awake_end_flag = false;
/* Set callback function for the awake interrupt. */
pal_trx_irq_init_awake((FUNC_PTR)trx_awake_handler_cb);
/* Save current state of global interrupts. */
ENTER_CRITICAL_REGION();
/* Force enabling of global interrupts. */
ENABLE_GLOBAL_IRQ();
/* Leave trx sleep mode. */
TRX_SLP_TR_LOW();
/* Poll wake-up interrupt flag until set within ISR. */
while (!tal_awake_end_flag) {
}
/* Restore original state of global interrupts. */
LEAVE_CRITICAL_REGION();
/* Clear existing interrupts */
trx_reg_write(RG_IRQ_STATUS, 0xFF);
/* Re-enable TRX_END interrupt */
trx_reg_write(RG_IRQ_MASK, TRX_IRQ_DEFAULT);
#if (ANTENNA_DIVERSITY == 1)
/* Enable antenna diversity. */
trx_bit_write(SR_ANT_EXT_SW_EN, ANT_EXT_SW_ENABLE);
#endif
if ((trx_cmd == CMD_TRX_OFF) ||
(trx_cmd == CMD_FORCE_TRX_OFF)) {
tal_trx_status = TRX_OFF;
return TRX_OFF;
}
}
switch (trx_cmd) { /* requested state */
case CMD_SLEEP:
trx_reg_write(RG_TRX_STATE, CMD_FORCE_TRX_OFF);
#if (ANTENNA_DIVERSITY == 1)
/* Disable antenna diversity: sets pulls */
trx_bit_write(SR_ANT_EXT_SW_EN, ANT_EXT_SW_DISABLE);
#endif
{
uint16_t rand_value;
/*
* Init the SEED value of the CSMA backoff algorithm.
*/
rand_value = (uint16_t)rand();
trx_reg_write(RG_CSMA_SEED_0, (uint8_t)rand_value);
trx_bit_write(SR_CSMA_SEED_1,
(uint8_t)(rand_value >> 8));
}
/*
* Clear existing interrupts to have clear interrupt flags
* during wake-up.
*/
trx_reg_write(RG_IRQ_STATUS, 0xFF);
/*
* Enable Awake_end interrupt.
* This is used for save wake-up from sleep later.
*/
trx_reg_write(RG_IRQ_MASK, TRX_IRQ_AWAKE_ONLY);
PAL_WAIT_1_US();
TRX_SLP_TR_HIGH();
pal_timer_delay(TRX_OFF_TO_SLEEP_TIME_CLKM_CYCLES);
tal_trx_status = TRX_SLEEP;
return TRX_SLEEP; /* transceiver register cannot be read during
*TRX_SLEEP */
case CMD_TRX_OFF:
switch (tal_trx_status) {
case TRX_OFF:
break;
default:
trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
//.........这里部分代码省略.........
开发者ID:AndreyMostovov，项目名称:asf，代码行数:101，代码来源:tal.c
示例15: perform_cca_twice
/**
* @brief Performs CCA twice
*/
static uint8_t perform_cca_twice(void)
{
uint8_t cca_status;
uint8_t cca_done;
uint8_t CW = 2;
uint32_t now_time_us;
do
{
pal_get_current_time(&now_time_us);
} while (pal_add_time_us(now_time_us, (SLEEP_TO_TRX_OFF_US + CCA_PREPARATION_DURATION_US)) <
cca_starttime_us);
#ifndef RFD
if (tal_beacon_transmission)
{
#if (DEBUG > 0)
ASSERT("Ongoing beacon transmission, slotted CSMA busy" == 0);
#endif
return PHY_BUSY;
}
#endif
// Ensure that trx is at least in TRX_OFF mode at this time.
if (tal_trx_status == TRX_SLEEP)
{
set_trx_state(CMD_TRX_OFF);
}
do
{
pal_get_current_time(&now_time_us);
} while (pal_add_time_us(now_time_us, (PLL_LOCK_TIME_US + CCA_PREPARATION_DURATION_US)) <
cca_starttime_us);
/*
* Set trx to PLL_ON.
* If trx is busy and trx cannot be set to PLL_ON, assess channel as busy.
*/
if (set_trx_state(CMD_PLL_ON) != PLL_ON)
{
return PHY_BUSY;
}
// no interest in receiving frames while doing CCA
pal_trx_bit_write(SR_RX_PDT_DIS, RX_DISABLE); // disable frame reception indication
// do CCA twice
do
{
// wait here until 16us before backoff boundary
// assume TRX is in PLL_ON
do
{
pal_get_current_time(&now_time_us);
} while (pal_add_time_us(now_time_us, CCA_PRE_START_DURATION_US) <
cca_starttime_us);
pal_trx_reg_write(RG_TRX_STATE, CMD_RX_ON);
// debug pin to switch on: define ENABLE_DEBUG_PINS, pal_config.h
PIN_CCA_START();
/* Start CCA */
pal_trx_bit_write(SR_CCA_REQUEST, CCA_START);
// wait until CCA is done and get status
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(CCA_DURATION_SYM));
do
{
// poll until CCA is really done;
cca_done = pal_trx_bit_read(SR_CCA_DONE);
} while (cca_done != CCA_DETECTION_DONE);
// between both CCA switch trx to PLL_ON to reduce power consumption
pal_trx_reg_write(RG_TRX_STATE, CMD_PLL_ON);
// debug pin to switch on: define ENABLE_DEBUG_PINS, pal_config.h
PIN_CCA_END();
// check if channel was idle or busy
if (pal_trx_bit_read(SR_CCA_STATUS) == CCA_STATUS_CHANNEL_IS_IDLE)
{
// do next CCA at next backoff boundary
cca_starttime_us = pal_add_time_us(cca_starttime_us,
TAL_CONVERT_SYMBOLS_TO_US(aUnitBackoffPeriod));
CW--;
cca_status = PHY_IDLE;
}
else // PHY busy
{
cca_status = PHY_BUSY;
break; // if channel is busy do no do CCA for the second time
}
}
while (CW > 0);
//.........这里部分代码省略.........
开发者ID:lchao-bit，项目名称:vanet-radio，代码行数:101，代码来源:tal_slotted_csma.c
示例16: tal_task
/*
* \brief TAL task handling
*
* This function
* - Checks and allocates the receive buffer.
* - Processes the TAL incoming frame queue.
* - Implements the TAL state machine.
*/
void tal_task(void)
{
/* Check if the receiver needs to be switched on. */
if (tal_rx_on_required && (tal_state == TAL_IDLE)) {
/* Check if a receive buffer has not been available before. */
if (tal_rx_buffer == NULL) {
tal_rx_buffer = bmm_buffer_alloc(LARGE_BUFFER_SIZE);
}
/* Check if buffer could be allocated */
if (NULL != tal_rx_buffer) {
/*
* Note:
* This flag needs to be reset BEFORE the received is
*switched on.
*/
tal_rx_on_required = false;
/*
* Release the protected buffer and set it again for
*further protection
* since the buffer is available now.
*/
trx_bit_write(SR_RX_SAFE_MODE, RX_SAFE_MODE_DISABLE); /*
*Disable
*buffer
*protection
*mode
**/
pal_timer_delay(2); /* Allow pin change to get effective */
trx_bit_write(SR_RX_SAFE_MODE, RX_SAFE_MODE_ENABLE); /*
*Enable
*buffer
*protection
*mode
**/
CONF_REG_WRITE();
#ifdef PROMISCUOUS_MODE
if (tal_pib.PromiscuousMode) {
set_trx_state(CMD_RX_ON);
} else {
set_trx_state(CMD_RX_AACK_ON);
}
#else /* Normal operation */
set_trx_state(CMD_RX_AACK_ON);
#endif
}
} else {
/* no free buffer is available; try next time again */
}
/*
* If the transceiver has received a frame and it has been placed
* into the queue of the TAL, the frame needs to be processed further.
*/
if (tal_incoming_frame_queue.size > 0) {
buffer_t *rx_frame;
/* Check if there are any pending data in the
*incoming_frame_queue. */
rx_frame = qmm_queue_remove(&tal_incoming_frame_queue, NULL);
if (NULL != rx_frame) {
process_incoming_frame(rx_frame);
}
}
/* Handle the TAL state machines */
switch (tal_state) {
case TAL_IDLE:
/* Do nothing, but fall through... */
case TAL_TX_AUTO:
/* Wait until state is changed to TAL_TX_DONE inside tx end ISR
**/
break;
case TAL_TX_DONE:
tx_done_handling(); /* see tal_tx.c */
break;
#ifdef BEACON_SUPPORT
case TAL_SLOTTED_CSMA:
slotted_csma_state_handling(); /* see tal_slotted_csma.c */
break;
#endif /* BEACON_SUPPORT */
#if (MAC_SCAN_ED_REQUEST_CONFIRM == 1)
case TAL_ED_RUNNING:
/* Do nothing here. Wait until ED is completed. */
break;
//.........这里部分代码省略.........
开发者ID:AndreyMostovov，项目名称:asf，代码行数:101，代码来源:tal.c
示例17: send_frame
/*
* \brief Sends frame using trx features to handle CSMA and re-transmissions
*
* \param use_csma Flag indicating if CSMA is requested
* \param tx_retries Flag indicating if transmission retries are requested
* by the MAC layer
*/
void send_frame(csma_mode_t csma_mode, bool tx_retries)
{
tal_trx_status_t trx_status;
/* Configure tx according to tx_retries */
if (tx_retries) {
trx_bit_write(SR_MAX_FRAME_RETRIES,
tal_pib.MaxFrameRetries);
} else {
trx_bit_write(SR_MAX_FRAME_RETRIES, 0);
}
/* Configure tx according to csma usage */
if ((csma_mode == NO_CSMA_NO_IFS) || (csma_mode == NO_CSMA_WITH_IFS)) {
trx_bit_write(SR_MAX_CSMA_RETRIES, 7); /* immediate
* transmission */
} else {
trx_bit_write(SR_MAX_CSMA_RETRIES, tal_pib.MaxCSMABackoffs);
}
do {
trx_status = set_trx_state(CMD_TX_ARET_ON);
} while (trx_status != TX_ARET_ON);
pal_trx_irq_dis();
/* Handle interframe spacing */
if (csma_mode == NO_CSMA_WITH_IFS) {
if (last_frame_length > aMaxSIFSFrameSize) {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinLIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
last_frame_length = 0;
} else {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinSIFSPeriod_def)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
last_frame_length = 0;
}
}
/* Toggle the SLP_TR pin triggering transmission. */
TRX_SLP_TR_HIGH();
PAL_WAIT_65_NS();
TRX_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
trx_frame_write(tal_frame_to_tx, tal_frame_to_tx[0] - 1);
tal_state = TAL_TX_AUTO;
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
#ifdef TX_OCTET_COUNTER
tal_tx_octet_cnt += PHY_OVERHEAD + LENGTH_FIELD_LEN + frame_tx[0];
#endif
}
开发者ID:InSoonPark，项目名称:asf，代码行数:78，代码来源:tal_tx.c
示例18: set_trx_state
/**
* @brief Sets transceiver state
*
* @param trx_cmd needs to be one of the trx commands
*
* @return current trx state
*/
tal_trx_status_t set_trx_state(trx_cmd_t trx_cmd)
{
if (tal_trx_status == TRX_SLEEP)
{
uint8_t bit_status;
PAL_SLP_TR_LOW();
do
{
bit_status = pal_trx_bit_read(SR_TRX_STATUS);
} while (bit_status != TRX_OFF);
if ((trx_cmd == CMD_TRX_OFF) || (trx_cmd == CMD_FORCE_TRX_OFF))
{
tal_trx_status = TRX_OFF;
return TRX_OFF;
}
}
tal_trx_status = (tal_trx_status_t)pal_trx_bit_read(SR_TRX_STATUS);
switch (trx_cmd) /* new state */
{
case CMD_TRX_SLEEP:
pal_trx_reg_write(RG_TRX_STATE, CMD_FORCE_TRX_OFF);
{
uint16_t rand_value;
/*
* Init the SEED value of the CSMA backoff algorithm.
*/
rand_value = (uint16_t)rand();
pal_trx_reg_write(RG_CSMA_SEED_0, (uint8_t)rand_value);
pal_trx_bit_write(SR_CSMA_SEED_1, (uint8_t)(rand_value >> 8));
}
PAL_WAIT_1_US();
PAL_SLP_TR_HIGH();
pal_timer_delay(TRX_OFF_TO_SLEEP_TIME);
tal_trx_status = TRX_SLEEP;
return TRX_SLEEP; /* transceiver register cannot be read during TRX_SLEEP */
//break; // do not use break, since it is unreachable
case CMD_TRX_OFF:
switch (tal_trx_status)
{
case TRX_OFF:
break;
default:
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
PAL_WAIT_1_US();
break;
}
break;
case CMD_FORCE_TRX_OFF:
switch (tal_trx_status)
{
case TRX_OFF:
break;
case TX_ARET_ON:
pal_trx_reg_write(RG_TRX_STATE, CMD_FORCE_TRX_OFF);
PAL_SLP_TR_HIGH();
pal_timer_delay(2);
PAL_SLP_TR_LOW();
break;
default:
pal_trx_reg_write(RG_TRX_STATE, CMD_FORCE_TRX_OFF);
PAL_WAIT_1_US();
break;
}
break;
case CMD_PLL_ON:
switch (tal_trx_status)
{
case PLL_ON:
break;
case TRX_OFF:
switch_pll_on();
break;
case RX_ON:
case RX_AACK_ON:
case TX_ARET_ON:
pal_trx_reg_write(RG_TRX_STATE, CMD_PLL_ON);
PAL_WAIT_1_US();
break;
//.........这里部分代码省略.........
开发者ID:mknapik，项目名称:avr-MAC，代码行数:101，代码来源:tiny_tal.c
示例19: trx_init
/**
* \brief Initializes the transceiver
*
* This function is called to initialize the transceiver.
*
* \return MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the
* current device part number and version number are correct;
* FAILURE otherwise
*/
static retval_t trx_init(void)
{
tal_trx_status_t trx_status;
uint8_t poll_counter = 0;
/* Ensure control lines have correct levels. */
TRX_RST_HIGH();
TRX_SLP_TR_LOW();
/* Wait typical time of timer TR1. */
pal_timer_delay(P_ON_TO_CLKM_AVAILABLE_TYP_US);
/* Apply reset pulse */
TRX_RST_LOW();
pal_timer_delay(RST_PULSE_WIDTH_US);
TRX_RST_HIGH();
/* Verify that TRX_OFF can be written */
do {
/* Wait not more than max. value of TR1. */
if (poll_counter == P_ON_TO_CLKM_ATTEMPTS) {
return FAILURE;
}
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
poll_counter++;
/* Check if AT86RF231 is connected; omit manufacturer id check
**/
} while ((trx_reg_read(RG_VERSION_NUM) != AT86RF231_VERSION_NUM) ||
(trx_reg_read(RG_PART_NUM) != AT86RF231_PART_NUM));
/* Verify that TRX_OFF can be written */
trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
/* Verify that the trx has reached TRX_OFF. */
poll_counter = 0;
do {
/* Wait a short time interval. */
pal_timer_delay(TRX_POLL_WAIT_TIME_US);
trx_status = (tal_trx_status_t)trx_bit_read(SR_TRX_STATUS);
/* Wait not more than max. value of TR2. */
if (poll_counter == SLEEP_TO_TRX_OFF_ATTEMPTS) {
#if (_DEBUG_ > 0)
Assert(
"MAX Attempts to switch to TRX_OFF state reached" ==
0);
#endif
return FAILURE;
}
poll_counter++;
} while (trx_status != TRX_OFF);
tal_trx_status = TRX_OFF;
return MAC_SUCCESS;
}
开发者ID:AndreyMostovov，项目名称:asf，代码行数:70，代码来源:tal_init.c
示例20: do_ftn_calibration
/**
* @brief Filter tuning calibration implementation
*/
static void do_ftn_calibration(void)
{
pal_trx_bit_write(SR_FTN_START, 1);
/* Wait tTR16 (FTN calibration time). */
pal_timer_delay(25);
}
开发者ID:johncobb，项目名称:xmega_macless_rtb_demo，代码行数:9，代码来源:tal.c
注：本文中的pal_timer_delay函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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