/**
* Interrupt handler of UART0 peripherial.
*/
void UARTE0_UART0_IRQHandler(void)
{
// Check if any error has been detected.
if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_ERROR))
{
// Clear error event and ignore erronous byte in RXD register.
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_ERROR);
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_RXDRDY);
}
else if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_RXDRDY))
{
// Clear RXDRDY event.
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_RXDRDY);
// Read byte from the UART buffer.
uint8_t byte = nrf_uart_rxd_get(UART_INSTANCE);
if (!isRxBufferFull())
{
sReceiveBuffer[sReceiveHead] = byte;
sReceiveHead = (sReceiveHead + 1) % UART_RX_BUFFER_SIZE;
otSysEventSignalPending();
}
}
if (nrf_uart_event_check(UART_INSTANCE, NRF_UART_EVENT_TXDRDY))
{
// Clear TXDRDY event.
nrf_uart_event_clear(UART_INSTANCE, NRF_UART_EVENT_TXDRDY);
// Send any more bytes if available or call application about TX done.
if (sTransmitLength)
{
nrf_uart_txd_set(UART_INSTANCE, *sTransmitBuffer++);
sTransmitLength--;
}
else
{
sTransmitDone = true;
nrf_uart_task_trigger(UART_INSTANCE, NRF_UART_TASK_STOPTX);
otSysEventSignalPending();
}
}
}
static void setPendingEvent(RadioPendingEvents aEvent)
{
volatile uint32_t pendingEvents;
uint32_t bitToSet = 1UL << aEvent;
do
{
pendingEvents = __LDREXW((unsigned long volatile *)&sPendingEvents);
pendingEvents |= bitToSet;
} while (__STREXW(pendingEvents, (unsigned long volatile *)&sPendingEvents));
otSysEventSignalPending();
}
void nrf_802154_received_raw(uint8_t *p_data, int8_t power, uint8_t lqi)
#endif
{
otRadioFrame *receivedFrame = NULL;
for (uint32_t i = 0; i < NRF_802154_RX_BUFFERS; i++)
{
if (sReceivedFrames[i].mPsdu == NULL)
{
receivedFrame = &sReceivedFrames[i];
memset(receivedFrame, 0, sizeof(*receivedFrame));
#if OPENTHREAD_CONFIG_HEADER_IE_SUPPORT
receivedFrame->mIeInfo = &sReceivedIeInfos[i];
#endif
break;
}
}
assert(receivedFrame != NULL);
receivedFrame->mPsdu = &p_data[1];
receivedFrame->mLength = p_data[0];
receivedFrame->mInfo.mRxInfo.mRssi = power;
receivedFrame->mInfo.mRxInfo.mLqi = lqi;
receivedFrame->mChannel = nrf_802154_channel_get();
if (otPlatRadioGetPromiscuous(sInstance))
{
uint64_t timestamp = nrf5AlarmGetCurrentTime();
receivedFrame->mInfo.mRxInfo.mMsec = timestamp / US_PER_MS;
receivedFrame->mInfo.mRxInfo.mUsec = timestamp - receivedFrame->mInfo.mRxInfo.mMsec * US_PER_MS;
}
#if OPENTHREAD_CONFIG_ENABLE_TIME_SYNC
// Get the timestamp when the SFD was received.
uint32_t offset =
(int32_t)otPlatAlarmMicroGetNow() - (int32_t)nrf_802154_first_symbol_timestamp_get(time, p_data[0]);
receivedFrame->mIeInfo->mTimestamp = otPlatTimeGet() - offset;
#endif
otSysEventSignalPending();
}
