/**************************************************************************************************
* @fn macSleepWakeUp
*
* @brief Wake up the radio from sleep mode.
*
* @param none
*
* @return none
**************************************************************************************************
*/
void macSleepWakeUp(void)
{
/* don't wake up radio if it's already awake */
if (macSleepState == MAC_SLEEP_STATE_AWAKE)
{
return;
}
/* wake up MAC timer */
MAC_RADIO_TIMER_WAKE_UP();
/* if radio was completely off, restore from that state first */
if (macSleepState == MAC_SLEEP_STATE_RADIO_OFF)
{
/* turn on radio power (turns on oscillator too) */
MAC_RADIO_TURN_ON_POWER();
/* power-up initialization of receive logic */
macRxRadioPowerUpInit();
}
else
{
MAC_ASSERT(macSleepState == MAC_SLEEP_STATE_OSC_OFF);
/* turn on the oscillator */
MAC_RADIO_TURN_ON_OSC();
}
/* update sleep state here before requesting to turn on receiver */
macSleepState = MAC_SLEEP_STATE_AWAKE;
/* turn on the receiver if enabled */
macRxOnRequest();
}
/**************************************************************************************************
* @fn macRadioUpdateChannel
*
* @brief Update the radio channel if a new channel has been requested.
*
* @param none
*
* @return none
**************************************************************************************************
*/
MAC_INTERNAL_API void macRadioUpdateChannel(void)
{
halIntState_t s;
MAC_ASSERT(!macTxActive); /* cannot change channel during a transmit */
/* if the channel has changed, set the radio to the new channel */
HAL_ENTER_CRITICAL_SECTION(s);
if (reqChannel != macPhyChannel)
{
macPhyChannel = reqChannel;
HAL_EXIT_CRITICAL_SECTION(s);
/* changing the channel stops any receive in progress */
macRxOff();
MAC_RADIO_SET_CHANNEL(macPhyChannel);
/* If the channel is updated in the middle of receiving a frame, we must
* clean up the Rx logic.
*/
macRxHaltCleanup();
macRxOnRequest();
}
else
{
HAL_EXIT_CRITICAL_SECTION(s);
}
}
/**************************************************************************************************
* @fn macSleepWakeUp
*
* @brief Wake up the radio from sleep mode.
*
* @param none
*
* @return none
**************************************************************************************************
*/
void macSleepWakeUp(void)
{
/* don't wake up radio if it's already awake */
if (macSleepState == MAC_SLEEP_STATE_AWAKE)
{
return;
}
/* wake up MAC timer */
MAC_RADIO_TIMER_WAKE_UP();
/* if chip was completely off, restore from that state first */
if (macSleepState == MAC_SLEEP_STATE_CHIP_OFF)
{
/* enable chip power, initialize */
MAC_RADIO_ENABLE_VREG_SEQUENCE();
MAC_RADIO_VREG_ON_RADIO_INIT();
/* restore settings from pre-sleep */
MAC_RADIO_RESTORE_FROM_VREG_OFF();
}
/* turn on oscillator, restore settings from pre-sleep */
MAC_RADIO_ENABLE_OSC_SEQUENCE();
MAC_RADIO_RESTORE_FROM_OSC_OFF();
/* turn on the receiver if enabled */
macRxOnRequest();
/* set state variable */
macSleepState = MAC_SLEEP_STATE_AWAKE;
}
/**************************************************************************************************
* @fn macRadioUpdateChannel
*
* @brief Update the radio channel if a new channel has been requested.
*
* @param none
*
* @return none
**************************************************************************************************
*/
void macRadioUpdateChannel(void)
{
halIntState_t s;
MAC_ASSERT(!macTxActive); /* cannot change channel during a transmit */
/* if the channel has changed, set the radio to the new channel */
HAL_ENTER_CRITICAL_SECTION(s);
if (reqChannel != macPhyChannel)
{
macPhyChannel = reqChannel;
HAL_EXIT_CRITICAL_SECTION(s);
/* changing the channel stops any receive in progress */
macRxOff();
MAC_RADIO_SET_CHANNEL(macPhyChannel);
macRxOnRequest();
}
else
{
HAL_EXIT_CRITICAL_SECTION(s);
}
}
