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SX126x/8x: Add HEADER_VALID IRQ flag for actively receiving check (#2333)

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* Add HEADER_VALID IRQ flag for SX126x/8x to detect actively receiving
Needs new RadioLib commit

* Update comments

* Use latest RadioLib release

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
This commit is contained in:
GUVWAF 2023-03-06 22:53:59 +01:00 committed by GitHub
parent 5044169e8d
commit 3ca1e62b1f
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3 changed files with 15 additions and 18 deletions
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3
platformio.ini
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@ -66,8 +66,7 @@ lib_deps =
https://github.com/meshtastic/ArduinoThread.git#72921ac222eed6f526ba1682023cee290d9aa1b3 https://github.com/meshtastic/ArduinoThread.git#72921ac222eed6f526ba1682023cee290d9aa1b3
nanopb/Nanopb@^0.4.6 nanopb/Nanopb@^0.4.6
erriez/ErriezCRC32@^1.0.1 erriez/ErriezCRC32@^1.0.1
; jgromes/RadioLib@^5.5.1 jgromes/RadioLib@^5.7.0
https://github.com/jgromes/RadioLib.git#1afa947030c5637f71f6563bc22aa75032e53a57
; Used for the code analysis in PIO Home / Inspect ; Used for the code analysis in PIO Home / Inspect
check_tool = cppcheck check_tool = cppcheck

20
src/mesh/SX126xInterface.cpp
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@ -212,9 +212,10 @@ template <typename T> void SX126xInterface<T>::startReceive()
setStandby(); setStandby();
// int err = lora.startReceive(); // We use a 16 bit preamble so this should save some power by letting radio sit in standby mostly.
int err = lora.startReceiveDutyCycleAuto(); // We use a 32 bit preamble so this should save some power by letting radio sit in // Furthermore, we need the HEADER_VALID IRQ flag to detect whether we are actively receiving
// standby mostly. int err =
lora.startReceiveDutyCycleAuto(preambleLength, 8, RADIOLIB_SX126X_IRQ_RX_DEFAULT | RADIOLIB_SX126X_IRQ_HEADER_VALID);
assert(err == RADIOLIB_ERR_NONE); assert(err == RADIOLIB_ERR_NONE);
isReceiving = true; isReceiving = true;
@ -224,7 +225,7 @@ template <typename T> void SX126xInterface<T>::startReceive()
#endif #endif
} }
/** Could we send right now (i.e. either not actively receving or transmitting)? */ /** Is the channel currently active? */
template <typename T> bool SX126xInterface<T>::isChannelActive() template <typename T> bool SX126xInterface<T>::isChannelActive()
{ {
// check if we can detect a LoRa preamble on the current channel // check if we can detect a LoRa preamble on the current channel
@ -245,17 +246,12 @@ template <typename T> bool SX126xInterface<T>::isActivelyReceiving()
{ {
// The IRQ status will be cleared when we start our read operation. Check if we've started a header, but haven't yet // The IRQ status will be cleared when we start our read operation. Check if we've started a header, but haven't yet
// received and handled the interrupt for reading the packet/handling errors. // received and handled the interrupt for reading the packet/handling errors.
// FIXME: it would be better to check for preamble, but we currently have our ISR not set to fire for packets that
// never even get a valid header, so we don't want preamble to get set and stay set due to noise on the network.
uint16_t irq = lora.getIrqStatus(); uint16_t irq = lora.getIrqStatus();
bool hasPreamble = (irq & RADIOLIB_SX126X_IRQ_HEADER_VALID); bool headerValid = (irq & RADIOLIB_SX126X_IRQ_HEADER_VALID);
// this is not correct - often always true - need to add an extra conditional // if (headerValid) LOG_DEBUG("rx headerValid\n");
// size_t bytesPending = lora.getPacketLength(); return headerValid;
// if (hasPreamble) LOG_DEBUG("rx hasPreamble\n");
return hasPreamble;
} }
template <typename T> bool SX126xInterface<T>::sleep() template <typename T> bool SX126xInterface<T>::sleep()

10
src/mesh/SX128xInterface.cpp
View File

@ -203,7 +203,9 @@ template <typename T> void SX128xInterface<T>::startReceive()
digitalWrite(SX128X_TXEN, LOW); digitalWrite(SX128X_TXEN, LOW);
#endif #endif
int err = lora.startReceive(); // We use the HEADER_VALID IRQ flag to detect whether we are actively receiving
int err =
lora.startReceive(RADIOLIB_SX128X_RX_TIMEOUT_INF, RADIOLIB_SX128X_IRQ_RX_DEFAULT | RADIOLIB_SX128X_IRQ_HEADER_VALID);
assert(err == RADIOLIB_ERR_NONE); assert(err == RADIOLIB_ERR_NONE);
@ -214,7 +216,7 @@ template <typename T> void SX128xInterface<T>::startReceive()
#endif #endif
} }
/** Could we send right now (i.e. either not actively receving or transmitting)? */ /** Is the channel currently active? */
template <typename T> bool SX128xInterface<T>::isChannelActive() template <typename T> bool SX128xInterface<T>::isChannelActive()
{ {
// check if we can detect a LoRa preamble on the current channel // check if we can detect a LoRa preamble on the current channel
@ -234,8 +236,8 @@ template <typename T> bool SX128xInterface<T>::isChannelActive()
template <typename T> bool SX128xInterface<T>::isActivelyReceiving() template <typename T> bool SX128xInterface<T>::isActivelyReceiving()
{ {
uint16_t irq = lora.getIrqStatus(); uint16_t irq = lora.getIrqStatus();
bool hasPreamble = (irq & RADIOLIB_SX128X_IRQ_HEADER_VALID); bool hasHeader = (irq & RADIOLIB_SX128X_IRQ_HEADER_VALID);
return hasPreamble; return hasHeader;
} }
template <typename T> bool SX128xInterface<T>::sleep() template <typename T> bool SX128xInterface<T>::sleep()