// C++ level interrupt handler for this instance
void RF22::handleInterrupt()
{
uint8_t _lastInterruptFlags[2];
// Read the interrupt flags which clears the interrupt
spiBurstRead(RF22_REG_03_INTERRUPT_STATUS1, _lastInterruptFlags, 2);
#if 0
// Caution: Serial printing in this interrupt routine can cause mysterious crashes
Serial.print("interrupt ");
Serial.print(_lastInterruptFlags[0], HEX);
Serial.print(" ");
Serial.println(_lastInterruptFlags[1], HEX);
if (_lastInterruptFlags[0] == 0 && _lastInterruptFlags[1] == 0)
Serial.println("FUNNY: no interrupt!");
#endif
#if 0
// TESTING: fake an RF22_IFFERROR
static int counter = 0;
if (_lastInterruptFlags[0] & RF22_IPKSENT && counter++ == 10)
{
_lastInterruptFlags[0] = RF22_IFFERROR;
counter = 0;
}
#endif
if (_lastInterruptFlags[0] & RF22_IFFERROR)
{
// Serial.println("IFFERROR");
resetFifos(); // Clears the interrupt
if (_mode == RF22_MODE_TX)
restartTransmit();
else if (_mode == RF22_MODE_RX)
clearRxBuf();
}
// Caution, any delay here may cause a FF underflow or overflow
if (_lastInterruptFlags[0] & RF22_ITXFFAEM)
{
// See if more data has to be loaded into the Tx FIFO
sendNextFragment();
// Serial.println("ITXFFAEM");
}
if (_lastInterruptFlags[0] & RF22_IRXFFAFULL)
{
// Caution, any delay here may cause a FF overflow
// Read some data from the Rx FIFO
readNextFragment();
// Serial.println("IRXFFAFULL");
}
if (_lastInterruptFlags[0] & RF22_IEXT)
{
// This is not enabled by the base code, but users may want to enable it
handleExternalInterrupt();
// Serial.println("IEXT");
}
if (_lastInterruptFlags[1] & RF22_IWUT)
{
// This is not enabled by the base code, but users may want to enable it
handleWakeupTimerInterrupt();
// Serial.println("IWUT");
}
if (_lastInterruptFlags[0] & RF22_IPKSENT)
{
// Serial.println("IPKSENT");
_txGood++;
// Transmission does not automatically clear the tx buffer.
// Could retransmit if we wanted
// RF22 transitions automatically to Idle
_mode = RF22_MODE_IDLE;
}
if (_lastInterruptFlags[0] & RF22_IPKVALID)
{
uint8_t len = spiRead(RF22_REG_4B_RECEIVED_PACKET_LENGTH);
// Serial.println("IPKVALID");
// Serial.println(len);
// Serial.println(_bufLen);
// May have already read one or more fragments
// Get any remaining unread octets, based on the expected length
// First make sure we dont overflow the buffer in the case of a stupid length
// or partial bad receives
if ( len > RF22_MAX_MESSAGE_LEN
|| len < _bufLen)
{
_rxBad++;
_mode = RF22_MODE_IDLE;
clearRxBuf();
return; // Hmmm receiver buffer overflow.
}
spiBurstRead(RF22_REG_7F_FIFO_ACCESS, _buf + _bufLen, len - _bufLen);
_rxGood++;
_bufLen = len;
_mode = RF22_MODE_IDLE;
_rxBufValid = true;
}
if (_lastInterruptFlags[0] & RF22_ICRCERROR)
{
// Serial.println("ICRCERR");
_rxBad++;
clearRxBuf();
resetRxFifo();
_mode = RF22_MODE_IDLE;
setModeRx(); // Keep trying
}
if (_lastInterruptFlags[1] & RF22_IPREAVAL)
{
// Serial.println("IPREAVAL");
_lastRssi = spiRead(RF22_REG_26_RSSI);
clearRxBuf();
}
}
// C++ level interrupt handler for this instance
void RF22::handleInterrupt() {
uint8_t _lastInterruptFlags[2];
// Read the interrupt flags which clears the interrupt
spiBurstRead(RF22_REG_03_INTERRUPT_STATUS1, _lastInterruptFlags, 2);
if (_lastInterruptFlags[0] & RF22_IFFERROR) {
// cout << "RFM22 handleInterrupt(): IFFERROR\n";
resetFifos(); // Clears the interrupt
if (_mode == RF22_MODE_TX) {
restartTransmit();
} else if (_mode == RF22_MODE_RX) {
clearRxBuf();
setModeIdle();
setModeRx();
}
}
// Caution, any delay here may cause a FF underflow or overflow
if (_lastInterruptFlags[0] & RF22_ITXFFAEM) {
// See if more data has to be loaded into the Tx FIFO
sendNextFragment();
//cout << "RFM22 handleInterrupt(): ITXFFAEM\n";
}
if (_lastInterruptFlags[0] & RF22_IRXFFAFULL) {
// Caution, any delay here may cause a FF overflow
// Read some data from the Rx FIFO
readNextFragment();
cout << "RFM22 handleInterrupt(): IRXFFAFULL\n";
}
if (_lastInterruptFlags[0] & RF22_IEXT) {
// This is not enabled by the base code, but users may want to enable it
handleExternalInterrupt();
cout << "RFM22 handleInterrupt(): IEXT\n";
}
if (_lastInterruptFlags[1] & RF22_IWUT) {
// This is not enabled by the base code, but users may want to enable it
handleWakeupTimerInterrupt();
}
if (_lastInterruptFlags[0] & RF22_IPKSENT) {
_txGood++;
// Transmission does not automatically clear the tx buffer.
// Could retransmit if we wanted
// RF22 transitions automatically to Idle
_mode = RF22_MODE_IDLE;
}
if (_lastInterruptFlags[0] & RF22_IPKVALID) {
// cout << "RFM22 handleInterrupt(): IPKVALID\n";
fflush(stdout);
uint8_t len = spiRead(RF22_REG_4B_RECEIVED_PACKET_LENGTH);
// May have already read one or more fragments
// Get any remaining unread octets, based on the expected length
// First make sure we dont overflow the buffer in the case of a stupid length
// or partial bad receives
if (len > RF22_MAX_MESSAGE_LEN || len < _bufLen) {
_rxBad++;
_mode = RF22_MODE_IDLE;
clearRxBuf();
return; // Hmmm receiver buffer overflow.
}
spiBurstRead(RF22_REG_7F_FIFO_ACCESS, _buf, 64);
resetRxFifo();
setModeIdle();
setModeRx();
// spiBurstRead(RF22_REG_7F_FIFO_ACCESS, _buf + _bufLen, len - _bufLen);
_rxGood++;
_bufLen = len;
_mode = RF22_MODE_IDLE;
_rxBufValid = true;
//notify registered dispatcherModule
dispatcher->receiveMessage(this);
}
if (_lastInterruptFlags[0] & RF22_ICRCERROR) {
cout << "RFM22 handleInterrupt(): ICRCERR\n";
_rxBad++;
clearRxBuf();
resetRxFifo();
_mode = RF22_MODE_IDLE;
setModeRx(); // Keep trying
}
if (_lastInterruptFlags[1] & RF22_IPREAVAL) {
// cout << "RFM22 handleInterrupt(): IPREAVAL\n";
_lastRssi = spiRead(RF22_REG_26_RSSI);
// clearRxBuf();
}
}