/**************************************************************************************************
* @fn macBackoffTimerSetRollover
*
* @brief Set rollover count of backoff timer.
*
* @param rolloverBackoff - backoff count where count is reset to zero
*
* @return none
**************************************************************************************************
*/
MAC_INTERNAL_API void macBackoffTimerSetRollover(uint32 rolloverBackoff)
{
halIntState_t s;
MAC_ASSERT(rolloverBackoff > MAC_RADIO_BACKOFF_COUNT()); /* rollover value must be greater than count */
HAL_ENTER_CRITICAL_SECTION(s);
backoffTimerRollover = rolloverBackoff;
MAC_RADIO_BACKOFF_SET_PERIOD(rolloverBackoff);
HAL_EXIT_CRITICAL_SECTION(s);
}
/**************************************************************************************************
* @fn macBackoffTimerSetRollover
*
* @brief Set rollover count of backoff timer.
*
* @param rolloverBackoff - backoff count where count is reset to zero
*
* @return none
**************************************************************************************************
*/
MAC_INTERNAL_API void macBackoffTimerSetRollover(uint32 rolloverBackoff)
{
halIntState_t s;
/* Normally called on initialization but timer realign also calls this. */
MAC_ASSERT(rolloverBackoff > MAC_RADIO_BACKOFF_COUNT()); /* rollover value must be greater than count */
DBG_PRINTL1(DBGSYS, "MAC_RADIO_BACKOFF_SET_PERIOD(%u)", rolloverBackoff);
HAL_ENTER_CRITICAL_SECTION(s);
macBackoffTimerRollover = rolloverBackoff;
MAC_RADIO_BACKOFF_SET_PERIOD(rolloverBackoff);
MAC_BACKOFF_TIMER_UPDATE_WAKEUP();
HAL_EXIT_CRITICAL_SECTION(s);
}
static
#endif /* USE_ICALL */
void macBackoffTimerEventHandler(void)
{
halIntState_t is;
uint8 events;
HAL_ENTER_CRITICAL_SECTION(is);
events = macBackoffTimerEvents;
macBackoffTimerEvents = 0;
HAL_EXIT_CRITICAL_SECTION(is);
if (events & MAC_BACKOFF_TIMER_EVENT_POWER_WAKEUP)
{
// Wakeup radio
// Turning on radio domain before clock set up seems to cause
// unexpected interrupt.
// Hence interrupt shall be disabled here.
MB_DisableInts();
// Enable clocks for all radio internal modules.
// Use Non-Buff access for safety and check for sanity
HWREG(RFC_PWR_NONBUF_BASE + RFC_PWR_O_PWMCLKEN) = 0x7FF;
/* Setup mailbox */
macSetupMailbox();
#ifdef DEBUG_SW_TRACE
/* re-enable RF trace output for FPGA */
MB_SendCommand( BUILD_DIRECT_PARAM_EXT_CMD( CMD_ENABLE_DEBUG, 0x1D40 ) ); /* or 0x1940 for less trace */
DBG_PRINT0(DBGSYS, "RF Trace Resumes...");
#endif /* DEBUG_SW_TRACE */
/* Start off CM0. Patch it. */
macSetupRfHal();
/* Restore states */
MAC_RADIO_SET_CHANNEL(macPhyChannel);
MAC_RADIO_SET_PAN_COORDINATOR(macPanCoordinator);
MAC_RADIO_SET_PAN_ID(pMacPib->panId);
MAC_RADIO_SET_SHORT_ADDR(pMacPib->shortAddress);
MAC_RADIO_SET_IEEE_ADDR(pMacPib->extendedAddress.addr.extAddr);
#if !defined( USE_FPGA )
#ifdef USE_ICALL
// Switch back to HFOSC.
while (!ICall_pwrIsStableXOSCHF());
ICall_pwrSwitchXOSCHF();
#endif /* USE_ICALL */
#ifdef OSAL_PORT2TIRTOS
// Switches back to HFOSC.
while (!Power_isStableXOSC_HF());
Power_switchXOSC_HF();
#endif /* OSAL_PORT2TIRTOS */
#endif /* !defined( USE_FPGA ) */
/* Synchronize RAT timer */
macSyncStartRAT(macRATValue);
/* Turn on autoack */
MAC_RADIO_TURN_ON_AUTO_ACK();
/* Initialize SRCEXTPENDEN and SRCSHORTPENDEN to zeros */
MAC_RADIO_SRC_MATCH_INIT_EXTPENDEN();
MAC_RADIO_SRC_MATCH_INIT_SHORTPENDEN();
/* Start 15.4 Radio */
macSetupRadio();
/* Restore timer comparators */
MAC_RADIO_BACKOFF_SET_PERIOD(macBackoffTimerRollover);
MAC_RADIO_BACKOFF_SET_COMPARE(backoffTimerTrigger);
#if 0 /* Following code should be disabled normally */
/* Code for wakeup lead time calibration */
{
static uint32 macBackoffTimerMinMargin = 0xffffffffu;
uint32 delta = macPrevPeriodRatCount +
backoffTimerTrigger * MAC_BACKOFF_TO_RAT_RATIO - MAC_RAT_COUNT;
if (delta < macBackoffTimerMinMargin)
{
macBackoffTimerMinMargin = delta;
}
}
#endif
}
/* Note that MAC_BACKOFF_TIMER_EVENT_POWER_TIMER_EXP handling must always
* occur after handling of MAC_BACKOFF_TIMER_EVENT_POWER_WAKEUP event
* because the device might be waking up upon the timer event itself
* in which case, radio has to be turned on before updating the RAT timer.
*/
if (events & MAC_BACKOFF_TIMER_EVENT_POWER_TIMER_EXP)
{
/* Update wakeup schedule, which most likely would vote not to enter
* sleep state. */
HAL_ENTER_CRITICAL_SECTION(is);
MAC_BACKOFF_TIMER_UPDATE_WAKEUP();
HAL_EXIT_CRITICAL_SECTION(is);
}
}
