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Poll for packets

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This commit is contained in:
Adam Novak 2022-02-16 21:02:49 -05:00
parent 910b8b0821
commit 15d1cdc526
3 changed files with 44 additions and 19 deletions
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55
LoRa.cpp
View File

@ -394,6 +394,19 @@ void LoRaClass::flush()
{
}
void LoRaClass::pollReceive()
{
int irqFlags = readRegister(REG_IRQ_FLAGS);
// clear IRQ's
writeRegister(REG_IRQ_FLAGS, irqFlags);
if ((irqFlags & IRQ_RX_DONE_MASK) && !(irqFlags & IRQ_PAYLOAD_CRC_ERROR_MASK)) {
// received a packet
handleRx();
}
}
void LoRaClass::onReceive(void(*callback)(int))
{
_onReceive = callback;
@ -404,17 +417,15 @@ void LoRaClass::onReceive(void(*callback)(int))
#endif
writeRegister(REG_DIO_MAPPING_1, 0x00);
#if LIBRARY_TYPE == LIBRARY_ARDUINO
#if MCU_VARIANT != MCU_LINUX && LIBRARY_TYPE == LIBRARY_ARDUINO
#ifdef SPI_HAS_NOTUSINGINTERRUPT
SPI.usingInterrupt(digitalPinToInterrupt(_dio0));
#endif
attachInterrupt(digitalPinToInterrupt(_dio0), LoRaClass::onDio0Rise, RISING);
#endif
// TODO: What do we do if we want to use C library with a board that
// actually has dio0 connected?
} else {
#if LIBRARY_TYPE == LIBRARY_ARDUINO
#if MCU_VARIANT != MCU_LINUX && LIBRARY_TYPE == LIBRARY_ARDUINO
detachInterrupt(digitalPinToInterrupt(_dio0));
#ifdef SPI_HAS_NOTUSINGINTERRUPT
SPI.notUsingInterrupt(digitalPinToInterrupt(_dio0));
@ -670,23 +681,29 @@ void ISR_VECT LoRaClass::handleDio0Rise()
if ((irqFlags & IRQ_PAYLOAD_CRC_ERROR_MASK) == 0) {
// received a packet
_packetIndex = 0;
// read packet length
int packetLength = _implicitHeaderMode ? readRegister(REG_PAYLOAD_LENGTH) : readRegister(REG_RX_NB_BYTES);
// set FIFO address to current RX address
writeRegister(REG_FIFO_ADDR_PTR, readRegister(REG_FIFO_RX_CURRENT_ADDR));
if (_onReceive) {
_onReceive(packetLength);
}
// reset FIFO address
writeRegister(REG_FIFO_ADDR_PTR, 0);
handleRx();
}
}
void ISR_VECT LoRaClass::handleRx()
{
// received a packet
_packetIndex = 0;
// read packet length
int packetLength = _implicitHeaderMode ? readRegister(REG_PAYLOAD_LENGTH) : readRegister(REG_RX_NB_BYTES);
// set FIFO address to current RX address
writeRegister(REG_FIFO_ADDR_PTR, readRegister(REG_FIFO_RX_CURRENT_ADDR));
if (_onReceive) {
_onReceive(packetLength);
}
// reset FIFO address
writeRegister(REG_FIFO_ADDR_PTR, 0);
}
uint8_t ISR_VECT LoRaClass::readRegister(uint8_t address)
{
return singleTransfer(address & 0x7f, 0x00);

2
LoRa.h
View File

@ -76,6 +76,7 @@ public:
virtual int peek();
virtual void flush();
void pollReceive();
void onReceive(void(*callback)(int));
void receive(int size = 0);
@ -115,6 +116,7 @@ private:
void implicitHeaderMode();
void handleDio0Rise();
void handleRx();
uint8_t readRegister(uint8_t address);
void writeRegister(uint8_t address, uint8_t value);

6
RNode_Firmware.ino
View File

@ -778,6 +778,12 @@ void loop() {
kiss_write_packet();
}
#endif
#if MCU_VARIANT == MCU_LINUX
// We don't have interrupts, so we need to poll ofr received packets.
// TODO: Is this fast enough? Or do we need threads or something?
LoRa.pollReceive();
#endif
if (queue_height > 0) {
if (!dcd_waiting) updateModemStatus();