Automated version bumps

* LR2021 radio on NRF_Promicro

Co-authored-by: Copilot <copilot@github.com>

* Refactor LR2021 interface includes and conditional compilation for improved clarity

Co-authored-by: Copilot <copilot@github.com>

* Refactor LR20x0 interface: remove unused includes and update comments for clarity

* Fix LR2021 max power definitions and add radio type detection tests

* remove potato radio type detection tests

* Include placeholder for DCDC - currently requires godmode

* Added godmode features - not enabled by default

---------

Co-authored-by: Copilot <copilot@github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

bin/org.meshtastic.meshtasticd.metainfo.xml

@@ -87,6 +87,9 @@
   </screenshots>
 
   <releases>
+    <release version="2.7.24" date="2026-05-08">
+      <url type="details">https://github.com/meshtastic/firmware/releases?q=tag%3Av2.7.24</url>
+    </release>
     <release version="2.7.23" date="2026-04-14">
       <url type="details">https://github.com/meshtastic/firmware/releases?q=tag%3Av2.7.23</url>
     </release>

debian/changelog

@@ -1,3 +1,9 @@
+meshtasticd (2.7.24.0) unstable; urgency=medium
+
+  * Version 2.7.24
+
+ -- GitHub Actions <github-actions[bot]@users.noreply.github.com>  Fri, 08 May 2026 10:44:12 +0000
+
 meshtasticd (2.7.23.0) unstable; urgency=medium
 
   * Version 2.7.23

src/DebugConfiguration.cpp

@@ -26,6 +26,8 @@ SOFTWARE.*/
 
 #include "DebugConfiguration.h"
 
+#include <memory>
+
 #ifdef ARCH_PORTDUINO
 #include "platform/portduino/PortduinoGlue.h"
 #endif
@@ -119,27 +121,22 @@ bool Syslog::vlogf(uint16_t pri, const char *fmt, va_list args)
 
 bool Syslog::vlogf(uint16_t pri, const char *appName, const char *fmt, va_list args)
 {
-    char *message;
-    size_t initialLen;
-    size_t len;
-    bool result;
+    // First measure the formatted length using a copy of args; passing args directly
+    // to vsnprintf consumes it, and reusing a consumed va_list is undefined behavior.
+    va_list args_measure;
+    va_copy(args_measure, args);
+    int needed = vsnprintf(nullptr, 0, fmt, args_measure);
+    va_end(args_measure);
 
-    initialLen = strlen(fmt);
+    if (needed < 0)
+        return false; // encoding error
 
-    message = new char[initialLen + 1];
+    auto message = std::unique_ptr<char[]>(new char[static_cast<size_t>(needed) + 1]);
+    int written = vsnprintf(message.get(), static_cast<size_t>(needed) + 1, fmt, args);
+    if (written < 0)
+        return false;
 
-    len = vsnprintf(message, initialLen + 1, fmt, args);
-    if (len > initialLen) {
-        delete[] message;
-        message = new char[len + 1];
-
-        vsnprintf(message, len + 1, fmt, args);
-    }
-
-    result = this->_sendLog(pri, appName, message);
-
-    delete[] message;
-    return result;
+    return this->_sendLog(pri, appName, message.get());
 }
 
 inline bool Syslog::_sendLog(uint16_t pri, const char *appName, const char *message)

src/concurrency/Lock.cpp

@@ -14,6 +14,11 @@ Lock::Lock() : handle(xSemaphoreCreateBinary())
     }
 }
 
+Lock::~Lock()
+{
+    vSemaphoreDelete(handle);
+}
+
 void Lock::lock()
 {
     if (xSemaphoreTake(handle, portMAX_DELAY) == false) {
@@ -30,6 +35,8 @@ void Lock::unlock()
 #else
 Lock::Lock() {}
 
+Lock::~Lock() {}
+
 void Lock::lock() {}
 
 void Lock::unlock() {}

src/concurrency/Lock.h

@@ -12,6 +12,7 @@ class Lock
 {
   public:
     Lock();
+    ~Lock();
 
     Lock(const Lock &) = delete;
     Lock &operator=(const Lock &) = delete;

src/detect/LoRaRadioType.h

@@ -11,7 +11,8 @@ enum LoRaRadioType {
     SX1280_RADIO,
     LR1110_RADIO,
     LR1120_RADIO,
-    LR1121_RADIO
+    LR1121_RADIO,
+    LR2021_RADIO
 };
 
 extern LoRaRadioType radioType;

src/gps/GPS.cpp

@@ -1025,10 +1025,13 @@ void GPS::up()
     setPowerState(GPS_ACTIVE);
 }
 
-// We've got a GPS lock. Enter a low power state, potentially.
+// We've finished a GPS search cycle (lock or timeout). Enter a low power state, potentially.
 void GPS::down()
 {
-    scheduling.informGotLock();
+    if (hasValidLocation)
+        scheduling.informGotLock();
+    else
+        scheduling.informSearchFailed();
     uint32_t predictedSearchDuration = scheduling.predictedSearchDurationMs();
     uint32_t sleepTime = scheduling.msUntilNextSearch();
     uint32_t updateInterval = Default::getConfiguredOrDefaultMs(config.position.gps_update_interval);
@@ -1553,7 +1556,12 @@ std::unique_ptr<GPS> GPS::createGps()
         _en_gpio = PIN_GPS_EN;
 #endif
 #ifdef ARCH_PORTDUINO
-    if (!portduino_config.has_gps)
+    if (portduino_config.has_gps) {
+        // These need to set as flags so later checks will pass on native and GPS will work.
+        // They are not used for any hardware access.
+        _rx_gpio = 1;
+        _tx_gpio = 1;
+    } else
         return nullptr;
 #endif
     if (!_rx_gpio || !_serial_gps) // Configured to have no GPS at all

src/gps/GPSUpdateScheduling.cpp

@@ -15,6 +15,19 @@ void GPSUpdateScheduling::informGotLock()
     searchEndedMs = millis();
     LOG_DEBUG("Took %us to get lock", (searchEndedMs - searchStartedMs) / 1000);
     updateLockTimePrediction();
+    consecutiveFailures = 0; // Drop back to fast cadence as soon as we acquire any fix
+}
+
+// Search finished without obtaining a fix. We still need to mark the end time so
+// the next sleep is timed correctly, but we must not feed the timeout duration
+// into predictedMsToGetLock — doing so poisons msUntilNextSearch() and causes
+// down() to fall into GPS_IDLE, leaving the chip awake on subsequent indoor cycles.
+void GPSUpdateScheduling::informSearchFailed()
+{
+    searchEndedMs = millis();
+    consecutiveFailures++;
+    LOG_DEBUG("GPS search ended without fix after %us (consecutive failures: %u)", (searchEndedMs - searchStartedMs) / 1000,
+              consecutiveFailures);
 }
 
 // Clear old lock-time prediction data.
@@ -25,6 +38,7 @@ void GPSUpdateScheduling::reset()
     searchEndedMs = 0;
     searchCount = 0;
     predictedMsToGetLock = 0;
+    consecutiveFailures = 0;
 }
 
 // How many milliseconds before we should next search for GPS position
@@ -36,6 +50,20 @@ uint32_t GPSUpdateScheduling::msUntilNextSearch()
     // Target interval (seconds), between GPS updates
     uint32_t updateInterval = Default::getConfiguredOrDefaultMs(config.position.gps_update_interval, default_gps_update_interval);
 
+    // After a failed search, back off: indoors / no-sky environments will keep failing,
+    // so wake at most once per broadcast interval rather than once per gps_update_interval.
+    // Capped at 1 hour so a user-configured very-long broadcast interval still retries
+    // periodically (in case conditions change). Reset on any successful lock.
+    if (consecutiveFailures > 0) {
+        constexpr uint32_t failureRetryCapMs = 60UL * 60UL * 1000UL; // 1 hour cap
+        uint32_t failureSleepMs =
+            Default::getConfiguredOrDefaultMs(config.position.position_broadcast_secs, default_broadcast_interval_secs);
+        if (failureSleepMs > failureRetryCapMs)
+            failureSleepMs = failureRetryCapMs;
+        if (updateInterval < failureSleepMs)
+            updateInterval = failureSleepMs;
+    }
+
     // Check how long until we should start searching, to hopefully hit our target interval
     uint32_t dueAtMs = searchEndedMs + updateInterval;
     uint32_t compensatedStart = dueAtMs - predictedMsToGetLock;
@@ -71,14 +99,18 @@ bool GPSUpdateScheduling::isUpdateDue()
 bool GPSUpdateScheduling::searchedTooLong()
 {
     constexpr uint32_t oneMinuteMs = 60UL * 1000UL;
-    constexpr uint32_t maxSearchClampMs = 15UL * oneMinuteMs; // Hard cap: 15 minutes is always too long
+    constexpr uint32_t maxSearchClampMs = 15UL * oneMinuteMs;   // Hard cap: 15 minutes is always too long
+    constexpr uint32_t postFailureSearchMs = 5UL * oneMinuteMs; // Tighter dwell once we know the environment is hostile
     uint32_t elapsed = elapsedSearchMs();
 
     // Anything over 15 minutes is too long, regardless of the broadcast interval.
-    // TODO: Make a smarter algorithm that backs off the search dwell time when not getting a lock.
     if (elapsed > maxSearchClampMs)
         return true;
 
+    // After a prior failed search, shorten the dwell
+    if (consecutiveFailures > 0 && elapsed > postFailureSearchMs)
+        return true;
+
     uint32_t minimumOrConfiguredSecs =
         Default::getConfiguredOrMinimumValue(config.position.position_broadcast_secs, default_broadcast_interval_secs);
     uint32_t maxSearchMs = Default::getConfiguredOrDefaultMs(minimumOrConfiguredSecs, default_broadcast_interval_secs);

src/gps/GPSUpdateScheduling.h

@@ -8,7 +8,8 @@ class GPSUpdateScheduling
   public:
     // Marks the time of these events, for calculation use
     void informSearching();
-    void informGotLock(); // Predicted lock-time is recalculated here
+    void informGotLock();      // Predicted lock-time is recalculated here
+    void informSearchFailed(); // Search ended without a fix; prediction is left untouched
 
     void reset();           // Reset the prediction - after GPS::disable() / GPS::enable()
     bool isUpdateDue();     // Is it time to begin searching for a GPS position?
@@ -24,6 +25,7 @@ class GPSUpdateScheduling
     uint32_t searchEndedMs = 0;
     uint32_t searchCount = 0;
     uint32_t predictedMsToGetLock = 0;
+    uint32_t consecutiveFailures = 0; // Count of search cycles that ended without a fix; reset on lock
 
     const float weighting = 0.2; // Controls exponential smoothing of lock-times prediction. 20% weighting of "latest lock-time".
 };

src/input/RotaryEncoderImpl.cpp

@@ -13,7 +13,6 @@ RotaryEncoderImpl *rotaryEncoderImpl;
 
 RotaryEncoderImpl::RotaryEncoderImpl()
 {
-    rotary = nullptr;
 #ifdef ARCH_ESP32
     isFirstInit = true;
 #endif
@@ -23,11 +22,6 @@ RotaryEncoderImpl::~RotaryEncoderImpl()
 {
     LOG_DEBUG("RotaryEncoderImpl destructor");
     detachRotaryEncoderInterrupts();
-
-    if (rotary != nullptr) {
-        delete rotary;
-        rotary = nullptr;
-    }
 }
 
 bool RotaryEncoderImpl::init()
@@ -43,8 +37,9 @@ bool RotaryEncoderImpl::init()
     eventPressed = static_cast<input_broker_event>(moduleConfig.canned_message.inputbroker_event_press);
 
     if (rotary == nullptr) {
-        rotary = new RotaryEncoder(moduleConfig.canned_message.inputbroker_pin_a, moduleConfig.canned_message.inputbroker_pin_b,
-                                   moduleConfig.canned_message.inputbroker_pin_press);
+        rotary.reset(new RotaryEncoder(moduleConfig.canned_message.inputbroker_pin_a,
+                                       moduleConfig.canned_message.inputbroker_pin_b,
+                                       moduleConfig.canned_message.inputbroker_pin_press));
     }
 
     attachRotaryEncoderInterrupts();

src/input/RotaryEncoderImpl.h

@@ -5,6 +5,7 @@
 #include "InputBroker.h"
 #include "concurrency/OSThread.h"
 #include "mesh/NodeDB.h"
+#include <memory>
 
 class RotaryEncoder;
 
@@ -28,7 +29,7 @@ class RotaryEncoderImpl final : public InputPollable
     input_broker_event eventCcw = INPUT_BROKER_NONE;
     input_broker_event eventPressed = INPUT_BROKER_NONE;
 
-    RotaryEncoder *rotary;
+    std::unique_ptr<RotaryEncoder> rotary;
 
   private:
 #ifdef ARCH_ESP32

src/mesh/InterfacesTemplates.cpp

@@ -1,5 +1,9 @@
+#include "configuration.h"
+
 #include "LR11x0Interface.cpp"
 #include "LR11x0Interface.h"
+#include "LR20x0Interface.cpp"
+#include "LR20x0Interface.h"
 #include "SX126xInterface.cpp"
 #include "SX126xInterface.h"
 #include "SX128xInterface.cpp"
@@ -21,6 +25,9 @@ template class LR11x0Interface<LR1110>;
 template class LR11x0Interface<LR1120>;
 template class LR11x0Interface<LR1121>;
 #endif
+#if defined(USE_LR2021) && RADIOLIB_EXCLUDE_LR2021 != 1
+template class LR20x0Interface<LR2021>;
+#endif
 #ifdef ARCH_STM32WL
 template class SX126xInterface<STM32WLx>;
 #endif

src/mesh/LR11x0Interface.cpp

@@ -57,16 +57,19 @@ template <typename T> bool LR11x0Interface<T>::init()
 #if ARCH_PORTDUINO
     float tcxoVoltage = (float)portduino_config.dio3_tcxo_voltage / 1000;
 // FIXME: correct logic to default to not using TCXO if no voltage is specified for LR11x0_DIO3_TCXO_VOLTAGE
-#elif !defined(LR11X0_DIO3_TCXO_VOLTAGE)
+#elif defined(LR11X0_DIO3_TCXO_VOLTAGE)
+    float tcxoVoltage = LR11X0_DIO3_TCXO_VOLTAGE;
+    LOG_DEBUG("LR11X0_DIO3_TCXO_VOLTAGE defined, using DIO3 as TCXO reference voltage at %f V", LR11X0_DIO3_TCXO_VOLTAGE);
+    // (DIO3 is not free to be used as an IRQ)
+#elif defined(TCXO_OPTIONAL)
+    float tcxoVoltage = 1.6f; // TCXO_OPTIONAL: try default 1.6 V first, fall back to XTAL on failure
+    LOG_DEBUG("TCXO_OPTIONAL: no LR11X0_DIO3_TCXO_VOLTAGE defined, trying default TCXO Vref 1.6 V first");
+#else
     float tcxoVoltage =
         0; // "TCXO reference voltage to be set on DIO3. Defaults to 1.6 V, set to 0 to skip." per
            // https://github.com/jgromes/RadioLib/blob/690a050ebb46e6097c5d00c371e961c1caa3b52e/src/modules/LR11x0/LR11x0.h#L471C26-L471C104
     // (DIO3 is free to be used as an IRQ)
     LOG_DEBUG("LR11X0_DIO3_TCXO_VOLTAGE not defined, not using DIO3 as TCXO reference voltage");
-#else
-    float tcxoVoltage = LR11X0_DIO3_TCXO_VOLTAGE;
-    LOG_DEBUG("LR11X0_DIO3_TCXO_VOLTAGE defined, using DIO3 as TCXO reference voltage at %f V", LR11X0_DIO3_TCXO_VOLTAGE);
-    // (DIO3 is not free to be used as an IRQ)
 #endif
 
     RadioLibInterface::init();
@@ -101,6 +104,17 @@ template <typename T> bool LR11x0Interface<T>::init()
         res = lora.begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength, tcxoVoltage);
     }
 
+#if defined(TCXO_OPTIONAL)
+    // If init failed for any reason other than chip not found, retry without TCXO (XTAL mode)
+    if (res != RADIOLIB_ERR_NONE && res != RADIOLIB_ERR_CHIP_NOT_FOUND && tcxoVoltage > 0) {
+        LOG_WARN("LR11x0 init failed with TCXO Vref %f V (err %d), retrying without TCXO", tcxoVoltage, res);
+        tcxoVoltage = 0;
+        res = lora.begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength, tcxoVoltage);
+        if (res == RADIOLIB_ERR_NONE)
+            LOG_INFO("LR11x0 init success without TCXO (XTAL mode)");
+    }
+#endif
+
     // \todo Display actual typename of the adapter, not just `LR11x0`
     LOG_INFO("LR11x0 init result %d", res);
     if (res == RADIOLIB_ERR_CHIP_NOT_FOUND || res == RADIOLIB_ERR_SPI_CMD_FAILED)
@@ -198,7 +212,7 @@ template <typename T> bool LR11x0Interface<T>::reconfigure()
 
     startReceive(); // restart receiving
 
-    return RADIOLIB_ERR_NONE;
+    return true;
 }
 
 template <typename T> void LR11x0Interface<T>::disableInterrupt()

src/mesh/LR2021Interface.cpp

@@ -0,0 +1,18 @@
+#include "configuration.h"
+
+#if defined(USE_LR2021) && RADIOLIB_EXCLUDE_LR2021 != 1
+
+#include "LR2021Interface.h"
+#include "error.h"
+
+LR2021Interface::LR2021Interface(LockingArduinoHal *hal, RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst,
+                                 RADIOLIB_PIN_TYPE busy)
+    : LR20x0Interface(hal, cs, irq, rst, busy)
+{
+}
+
+bool LR2021Interface::wideLora()
+{
+    return true;
+}
+#endif

src/mesh/LR2021Interface.h

@@ -0,0 +1,15 @@
+#pragma once
+#if RADIOLIB_EXCLUDE_LR2021 != 1
+#include "LR20x0Interface.h"
+
+/**
+ * Our adapter for LR2021 radios
+ */
+class LR2021Interface : public LR20x0Interface<LR2021>
+{
+  public:
+    LR2021Interface(LockingArduinoHal *hal, RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst,
+                    RADIOLIB_PIN_TYPE busy);
+    bool wideLora() override;
+};
+#endif

src/mesh/LR20x0Interface.cpp

@@ -0,0 +1,399 @@
+#include "configuration.h"
+
+#if defined(USE_LR2021) && RADIOLIB_EXCLUDE_LR2021 != 1
+#include "LR20x0Interface.h"
+#include "error.h"
+#include "mesh/NodeDB.h"
+
+// Keep LR20x0 naming while RadioLib exposes LR2021 symbols.
+#ifndef LR20x0
+#define LR20x0 LR2021
+#endif
+
+#ifdef LR2021_DIO_AS_RF_SWITCH
+#include "rfswitch.h"
+#elif ARCH_PORTDUINO
+#include "PortduinoGlue.h"
+#define lr20x0_rfswitch_dio_pins portduino_config.rfswitch_dio_pins
+#define lr20x0_rfswitch_table portduino_config.rfswitch_table
+#else
+static const uint32_t lr20x0_rfswitch_dio_pins[] = {RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};
+static const Module::RfSwitchMode_t lr20x0_rfswitch_table[] = {
+    {LR20x0::MODE_STBY, {}},  {LR20x0::MODE_RX, {}},    {LR20x0::MODE_TX, {}},
+    {LR20x0::MODE_RX_HF, {}}, {LR20x0::MODE_TX_HF, {}}, END_OF_MODE_TABLE,
+};
+#endif
+
+// Particular boards might define a different max power based on what their hardware can do, default to max power output if not
+// specified (may be dangerous if using external PA and LR20x0 power config forgotten)
+#if ARCH_PORTDUINO
+#define LR2021_MAX_POWER portduino_config.lr2021_max_power
+#endif
+#ifndef LR2021_MAX_POWER
+#define LR2021_MAX_POWER 22
+#endif
+
+// the 2.4G part maxes at 12dBm
+
+#if ARCH_PORTDUINO
+#define LR2021_MAX_POWER_HF portduino_config.lr2021_max_power_hf
+#endif
+#ifndef LR2021_MAX_POWER_HF
+#define LR2021_MAX_POWER_HF 12
+#endif
+
+template <typename T>
+LR20x0Interface<T>::LR20x0Interface(LockingArduinoHal *hal, RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst,
+                                    RADIOLIB_PIN_TYPE busy)
+    : RadioLibInterface(hal, cs, irq, rst, busy, &lora), lora(&module)
+{
+    LOG_WARN("LR20x0Interface(cs=%d, irq=%d, rst=%d, busy=%d)", cs, irq, rst, busy);
+}
+
+/// Initialise the Driver transport hardware and software.
+/// Make sure the Driver is properly configured before calling init().
+/// \return true if initialisation succeeded.
+template <typename T> bool LR20x0Interface<T>::init()
+{
+#ifdef LR2021_POWER_EN
+    pinMode(LR2021_POWER_EN, OUTPUT);
+    digitalWrite(LR2021_POWER_EN, HIGH);
+#endif
+
+#if ARCH_PORTDUINO
+    float tcxoVoltage = (float)portduino_config.dio3_tcxo_voltage / 1000;
+// FIXME: correct logic to default to not using TCXO if no voltage is specified for LR20x0_DIO3_TCXO_VOLTAGE
+#elif defined(LR2021_DIO3_TCXO_VOLTAGE)
+    float tcxoVoltage = LR2021_DIO3_TCXO_VOLTAGE;
+    LOG_DEBUG("LR2021_DIO3_TCXO_VOLTAGE defined, using DIO3 as TCXO reference voltage at %f V", LR2021_DIO3_TCXO_VOLTAGE);
+    // (DIO3 is not free to be used as an IRQ)
+#elif defined(TCXO_OPTIONAL)
+    float tcxoVoltage = 1.6f; // TCXO_OPTIONAL: try default 1.6 V first, fall back to XTAL on failure
+    LOG_DEBUG("TCXO_OPTIONAL: no LR2021_DIO3_TCXO_VOLTAGE defined, trying default TCXO Vref 1.6 V first");
+#else
+    float tcxoVoltage =
+        0; // "TCXO reference voltage to be set on DIO3. Defaults to 1.6 V, set to 0 to skip." per
+           // https://github.com/jgromes/RadioLib/blob/690a050ebb46e6097c5d00c371e961c1caa3b52e/src/modules/LR11x0/LR11x0.h#L471C26-L471C104
+    // (DIO3 is free to be used as an IRQ)
+    LOG_DEBUG("LR2021_DIO3_TCXO_VOLTAGE not defined, not using DIO3 as TCXO reference voltage");
+#endif
+
+    RadioLibInterface::init();
+
+#ifdef LR2021_IRQ_DIO_NUM
+    lora.irqDioNum = LR2021_IRQ_DIO_NUM;
+    LOG_DEBUG("Set irqDioNum %d", lora.irqDioNum);
+#elif defined(IRQ_DIO_NUM)
+    lora.irqDioNum = IRQ_DIO_NUM;
+    LOG_DEBUG("Set irqDioNum %d", lora.irqDioNum);
+#else
+    LOG_DEBUG("Use default irqDioNum %d", lora.irqDioNum);
+#endif
+
+    if (config.lora.region == meshtastic_Config_LoRaConfig_RegionCode_LORA_24) { // clamp if wide freq range
+        limitPower(LR2021_MAX_POWER_HF);
+    } else {
+        limitPower(LR2021_MAX_POWER); // default clamp for non-wide freq range
+    }
+
+#ifdef LR2021_RF_SWITCH_SUBGHZ
+    pinMode(LR2021_RF_SWITCH_SUBGHZ, OUTPUT);
+    digitalWrite(LR2021_RF_SWITCH_SUBGHZ, getFreq() < 1e9 ? HIGH : LOW);
+    LOG_DEBUG("Set RF0 switch to %s", getFreq() < 1e9 ? "SubGHz" : "2.4GHz");
+#endif
+
+#ifdef LR2021_RF_SWITCH_2_4GHZ
+    pinMode(LR2021_RF_SWITCH_2_4GHZ, OUTPUT);
+    digitalWrite(LR2021_RF_SWITCH_2_4GHZ, getFreq() < 1e9 ? LOW : HIGH);
+    LOG_DEBUG("Set RF1 switch to %s", getFreq() < 1e9 ? "SubGHz" : "2.4GHz");
+#endif
+
+    // Allow extra time for TCXO to stabilize after power-on
+    delay(10);
+
+    int res = lora.begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength, tcxoVoltage);
+
+    // Retry if we get SPI command failed - some units need extra TCXO stabilization time
+    if (res == RADIOLIB_ERR_SPI_CMD_FAILED) {
+        LOG_WARN("LR20x0 init failed with %d (SPI_CMD_FAILED), retrying after delay...", res);
+        delay(100);
+        res = lora.begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength, tcxoVoltage);
+    }
+
+#if defined(TCXO_OPTIONAL)
+    // If init failed for any reason other than chip not found, retry without TCXO (XTAL mode)
+    if (res != RADIOLIB_ERR_NONE && res != RADIOLIB_ERR_CHIP_NOT_FOUND && tcxoVoltage > 0) {
+        LOG_WARN("LR20x0 init failed with TCXO Vref %f V (err %d), retrying without TCXO", tcxoVoltage, res);
+        tcxoVoltage = 0;
+        res = lora.begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength, tcxoVoltage);
+        if (res == RADIOLIB_ERR_NONE)
+            LOG_INFO("LR20x0 init success without TCXO (XTAL mode)");
+    }
+#endif
+
+    // \todo Display actual typename of the adapter, not just `LR20x0`
+    LOG_INFO("LR20x0 init result %d", res);
+    if (res == RADIOLIB_ERR_CHIP_NOT_FOUND || res == RADIOLIB_ERR_SPI_CMD_FAILED)
+        return false;
+
+        // Some basic info about the module's explicit firmware version - no other info available
+        // Currently requires radiolib godmode
+
+#if RADIOLIB_GODMODE
+    uint8_t fwMajor = 0;
+    uint8_t fwMinor = 0;
+    int versionRes = lora.getVersion(&fwMajor, &fwMinor);
+    if (versionRes == RADIOLIB_ERR_NONE)
+        LOG_DEBUG("LR20x0 FW %d.%d", fwMajor, fwMinor);
+#endif
+
+    LOG_INFO("Frequency set to %f", getFreq());
+    LOG_INFO("Bandwidth set to %f", bw);
+    LOG_INFO("Power output set to %d", power);
+
+    if (res == RADIOLIB_ERR_NONE)
+        res = lora.setCRC(2);
+
+        // Standard DCDC ramp timing from RadioLib workarounds (register 0x00F20024)
+        // Currently requires radiolib godmode
+#if RADIOLIB_GODMODE
+    if (res == RADIOLIB_ERR_NONE) {
+        uint8_t rampTimes[4] = {15, 15, 15, 15}; // Standard case for all conditions
+        res = lora.setRegMode(RADIOLIB_LR2021_REG_MODE_SIMO_NORMAL, rampTimes);
+        if (res != RADIOLIB_ERR_NONE)
+            LOG_WARN("LR2021 setRegMode failed: %d", res);
+    }
+#endif
+
+#ifdef LR2021_DIO_AS_RF_SWITCH
+    bool dioAsRfSwitch = true;
+#elif defined(ARCH_PORTDUINO)
+    bool dioAsRfSwitch = portduino_config.has_rfswitch_table;
+#else
+    bool dioAsRfSwitch = false;
+#endif
+
+    if (dioAsRfSwitch) {
+        lora.setRfSwitchTable(lr20x0_rfswitch_dio_pins, lr20x0_rfswitch_table);
+        LOG_DEBUG("Set DIO RF switch");
+    }
+
+    if (res == RADIOLIB_ERR_NONE) {
+        if (config.lora.sx126x_rx_boosted_gain) { // the name is unfortunate but historically accurate
+            res = lora.setRxBoostedGainMode(true);
+            LOG_INFO("Set RX gain to boosted mode; result: %d", res);
+        } else {
+            res = lora.setRxBoostedGainMode(false);
+            LOG_INFO("Set RX gain to power saving mode (boosted mode off); result: %d", res);
+        }
+    }
+
+    if (res == RADIOLIB_ERR_NONE)
+        startReceive(); // start receiving
+
+    return res == RADIOLIB_ERR_NONE;
+}
+
+template <typename T> bool LR20x0Interface<T>::reconfigure()
+{
+    RadioLibInterface::reconfigure();
+
+    // set mode to standby
+    setStandby();
+
+    // configure publicly accessible settings
+    int err = lora.setSpreadingFactor(sf);
+    if (err != RADIOLIB_ERR_NONE)
+        RECORD_CRITICALERROR(meshtastic_CriticalErrorCode_INVALID_RADIO_SETTING);
+
+    err = lora.setBandwidth(bw); // different form than LR11xx
+    if (err != RADIOLIB_ERR_NONE)
+        RECORD_CRITICALERROR(meshtastic_CriticalErrorCode_INVALID_RADIO_SETTING);
+
+    err = lora.setCodingRate(cr, cr != 7); // use long interleaving except if CR is 4/7 which doesn't support it
+    if (err != RADIOLIB_ERR_NONE)
+        RECORD_CRITICALERROR(meshtastic_CriticalErrorCode_INVALID_RADIO_SETTING);
+
+    err = lora.setSyncWord(syncWord);
+    assert(err == RADIOLIB_ERR_NONE);
+
+    if (config.lora.region == meshtastic_Config_LoRaConfig_RegionCode_LORA_24) { // clamp if wide freq range
+        limitPower(LR2021_MAX_POWER_HF);
+    } else {
+        limitPower(LR2021_MAX_POWER); // default clamp for non-wide freq range
+    }
+
+    err = lora.setPreambleLength(preambleLength);
+    assert(err == RADIOLIB_ERR_NONE);
+
+    err = lora.setFrequency(getFreq());
+    if (err != RADIOLIB_ERR_NONE)
+        RECORD_CRITICALERROR(meshtastic_CriticalErrorCode_INVALID_RADIO_SETTING);
+
+    err = lora.setOutputPower(power);
+    assert(err == RADIOLIB_ERR_NONE);
+
+    // Apply RX gain mode — valid in STDBY, matches resetAGC() pattern
+    err = lora.setRxBoostedGainMode(config.lora.sx126x_rx_boosted_gain);
+    if (err != RADIOLIB_ERR_NONE)
+        LOG_WARN("LR20x0 setRxBoostedGainMode %s%d", radioLibErr, err);
+
+    startReceive(); // restart receiving
+
+    return true;
+}
+
+template <typename T> void LR20x0Interface<T>::disableInterrupt()
+{
+    lora.clearIrqAction();
+}
+
+template <typename T> void LR20x0Interface<T>::setStandby()
+{
+    checkNotification(); // handle any pending interrupts before we force standby
+
+    int err = lora.standby();
+
+    if (err != RADIOLIB_ERR_NONE) {
+        LOG_DEBUG("LR20x0 standby failed with error %d", err);
+    }
+
+    assert(err == RADIOLIB_ERR_NONE);
+
+    isReceiving = false; // If we were receiving, not any more
+    activeReceiveStart = 0;
+    disableInterrupt();
+    completeSending(); // If we were sending, not anymore
+    RadioLibInterface::setStandby();
+}
+
+/**
+ * Add SNR data to received messages
+ */
+template <typename T> void LR20x0Interface<T>::addReceiveMetadata(meshtastic_MeshPacket *mp)
+{
+    // LOG_DEBUG("PacketStatus %x", lora.getPacketStatus());
+    mp->rx_snr = lora.getSNR();
+    mp->rx_rssi = lround(lora.getRSSI());
+    // LOG_DEBUG("Corrected frequency offset: %f", lora.getFrequencyError()); // not implemented for LR20x0, but noop for LR11x0
+    // too(!)
+}
+
+/** We override to turn on transmitter power as needed.
+ */
+template <typename T> void LR20x0Interface<T>::configHardwareForSend()
+{
+    RadioLibInterface::configHardwareForSend();
+}
+
+// For power draw measurements, helpful to force radio to stay sleeping
+// #define SLEEP_ONLY
+
+template <typename T> void LR20x0Interface<T>::startReceive()
+{
+#ifdef SLEEP_ONLY
+    sleep();
+#else
+
+    setStandby();
+
+    lora.setPreambleLength(preambleLength); // Solve RX ack fail after direct message sent.  Not sure why this is needed.
+
+    // We use a 16 bit preamble so this should save some power by letting radio sit in standby mostly.
+    int err =
+        lora.startReceive(RADIOLIB_LR2021_RX_TIMEOUT_INF, MESHTASTIC_RADIOLIB_IRQ_RX_FLAGS, RADIOLIB_IRQ_RX_DEFAULT_MASK, 0);
+    if (err)
+        LOG_ERROR("StartReceive error: %d", err);
+    assert(err == RADIOLIB_ERR_NONE);
+
+    RadioLibInterface::startReceive();
+
+    // Must be done AFTER starting receive, because startReceive clears (possibly stale) interrupt pending register bits
+    enableInterrupt(isrRxLevel0);
+    checkRxDoneIrqFlag();
+#endif
+}
+
+/** Is the channel currently active? */
+template <typename T> bool LR20x0Interface<T>::isChannelActive()
+{
+    // check if we can detect a LoRa preamble on the current channel
+    ChannelScanConfig_t cfg = {.cad = {.symNum = NUM_SYM_CAD,
+                                       .detPeak = RADIOLIB_LR2021_CAD_PARAM_DEFAULT,
+                                       .detMin = RADIOLIB_LR2021_CAD_PARAM_DEFAULT,
+                                       .exitMode = RADIOLIB_LR2021_CAD_PARAM_DEFAULT,
+                                       .timeout = 0,
+                                       .irqFlags = RADIOLIB_IRQ_CAD_DEFAULT_FLAGS,
+                                       .irqMask = RADIOLIB_IRQ_CAD_DEFAULT_MASK}};
+    int16_t result;
+
+    setStandby();
+    result = lora.scanChannel(cfg);
+    if (result == RADIOLIB_LORA_DETECTED)
+        return true;
+
+    assert(result != RADIOLIB_ERR_WRONG_MODEM);
+
+    return false;
+}
+
+/** Could we send right now (i.e. either not actively receiving or transmitting)? */
+template <typename T> bool LR20x0Interface<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
+    // received and handled the interrupt for reading the packet/handling errors.
+    return receiveDetected(lora.getIrqStatus(), RADIOLIB_LR2021_IRQ_LORA_HEADER_VALID, RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED);
+}
+
+#ifdef LR20X0_AGC_RESET
+template <typename T> void LR20x0Interface<T>::resetAGC()
+{
+    // Safety: don't reset mid-packet
+    if (sendingPacket != NULL || (isReceiving && isActivelyReceiving()))
+        return;
+
+    LOG_DEBUG("LR20x0 AGC reset: warm sleep + Calibrate(0x3F)");
+
+    // 1. Warm sleep — powers down the analog frontend, resetting AGC state
+    lora.sleep(true, 0);
+
+    // 2. Wake to RC standby for stable calibration
+    lora.standby(RADIOLIB_LR20X0_STANDBY_RC, true);
+
+    // 3. Calibrate all blocks (PLL, ADC, image, RC oscillators)
+    //    calibrate() is protected on LR20x0, so use raw SPI (same as internal implementation)
+    uint8_t calData = RADIOLIB_LR20X0_CALIBRATE_ALL;
+    module.SPIwriteStream(RADIOLIB_LR20X0_CMD_CALIBRATE, &calData, 1, true, true);
+
+    // 4. Re-calibrate image rejection for actual operating frequency
+    //    Calibrate(0x3F) defaults to 902-928 MHz which is wrong for other regions.
+    lora.calibrateImageRejection(getFreq() - 4.0f, getFreq() + 4.0f);
+
+    // 5. Re-apply RX boosted gain mode
+    lora.setRxBoostedGainMode(config.lora.sx126x_rx_boosted_gain);
+
+    // 6. Resume receiving
+    startReceive();
+}
+#endif
+
+template <typename T> bool LR20x0Interface<T>::sleep()
+{
+    // \todo Display actual typename of the adapter, not just `LR20x0`
+    LOG_DEBUG("LR20x0 entering sleep mode");
+    setStandby(); // Stop any pending operations
+
+    // turn off TCXO if it was powered
+    lora.setTCXO(0);
+
+    // put chipset into sleep mode (we've already disabled interrupts by now)
+    bool keepConfig = false;
+    lora.sleep(keepConfig, 0); // Note: we do not keep the config, full reinit will be needed
+
+#ifdef LR2021_POWER_EN
+    digitalWrite(LR2021_POWER_EN, LOW);
+#endif
+
+    return true;
+}
+#endif

src/mesh/LR20x0Interface.h

@@ -0,0 +1,75 @@
+#pragma once
+#if RADIOLIB_EXCLUDE_LR2021 != 1
+#include "RadioLibInterface.h"
+
+/**
+ * \brief Adapter for LR20x0 radio family. Implements common logic for child classes.
+ * \tparam T RadioLib module type for LR20x0, e.g. LR2021.
+ */
+template <class T> class LR20x0Interface : public RadioLibInterface
+{
+  public:
+    LR20x0Interface(LockingArduinoHal *hal, RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst,
+                    RADIOLIB_PIN_TYPE busy);
+
+    /// Initialise the Driver transport hardware and software.
+    /// Make sure the Driver is properly configured before calling init().
+    /// \return true if initialisation succeeded.
+    virtual bool init() override;
+
+    /// Apply any radio provisioning changes
+    /// Make sure the Driver is properly configured before calling init().
+    /// \return true if initialisation succeeded.
+    virtual bool reconfigure() override;
+
+    /// Prepare hardware for sleep.  Call this _only_ for deep sleep, not needed for light sleep.
+    virtual bool sleep() override;
+
+    bool isIRQPending() override { return lora.getIrqFlags() != 0; }
+
+#ifdef LR20X0_AGC_RESET
+    void resetAGC() override;
+#endif
+
+  protected:
+    /**
+     * Specific module instance
+     */
+    T lora;
+
+    /**
+     * Glue functions called from ISR land
+     */
+    virtual void disableInterrupt() override;
+
+    /**
+     * Enable a particular ISR callback glue function
+     */
+    virtual void enableInterrupt(void (*callback)()) { lora.setIrqAction(callback); }
+
+    /** can we detect a LoRa preamble on the current channel? */
+    virtual bool isChannelActive() override;
+
+    /** are we actively receiving a packet (only called during receiving state) */
+    virtual bool isActivelyReceiving() override;
+
+    /**
+     * Start waiting to receive a message
+     */
+    virtual void startReceive() override;
+
+    /**
+     *  We override to turn on transmitter power as needed.
+     */
+    virtual void configHardwareForSend() override;
+
+    /**
+     * Add SNR data to received messages
+     */
+    virtual void addReceiveMetadata(meshtastic_MeshPacket *mp) override;
+
+    virtual void setStandby() override;
+
+    uint32_t getPacketTime(uint32_t pl, bool received) override { return computePacketTime(lora, pl, received); }
+};
+#endif

src/mesh/PacketHistory.cpp

@@ -17,7 +17,7 @@
 #define VERBOSE_PACKET_HISTORY 0     // Set to 1 for verbose logging, 2 for heavy debugging
 #define PACKET_HISTORY_TRACE_AGING 1 // Set to 1 to enable logging of the age of re/used history slots
 
-PacketHistory::PacketHistory(uint32_t size) : recentPacketsCapacity(0), recentPackets(NULL) // Initialize members
+PacketHistory::PacketHistory(uint32_t size) : recentPacketsCapacity(0) // Initialize members
 {
     if (size < 4 || size > PACKETHISTORY_MAX) { // Copilot suggested - makes sense
         LOG_WARN("Packet History - Invalid size %d, using default %d", size, PACKETHISTORY_MAX);
@@ -34,7 +34,7 @@ PacketHistory::PacketHistory(uint32_t size) : recentPacketsCapacity(0), recentPa
 
     // Allocate memory for the recent packets array
     recentPacketsCapacity = size;
-    recentPackets = new PacketRecord[recentPacketsCapacity];
+    recentPackets.reset(new PacketRecord[recentPacketsCapacity]);
     if (!recentPackets) { // No logging here, console/log probably uninitialized yet.
         LOG_ERROR("Packet History - Memory allocation failed for size=%d entries / %d Bytes", size,
                   sizeof(PacketRecord) * recentPacketsCapacity);
@@ -43,33 +43,20 @@ PacketHistory::PacketHistory(uint32_t size) : recentPacketsCapacity(0), recentPa
     }
 
     // Initialize the recent packets array to zero
-    memset(recentPackets, 0, sizeof(PacketRecord) * recentPacketsCapacity);
+    memset(recentPackets.get(), 0, sizeof(PacketRecord) * recentPacketsCapacity);
 
 #if !MESHTASTIC_EXCLUDE_PKT_HISTORY_HASH
     // Allocate hash index with load factor <= 0.5 for short probe chains
     hashCapacity = nextPowerOf2(recentPacketsCapacity * 2);
     hashMask = hashCapacity - 1;
-    hashIndex = new uint16_t[hashCapacity];
+    hashIndex.reset(new uint16_t[hashCapacity]);
     if (!hashIndex) {
         LOG_ERROR("Packet History - Hash index allocation failed for %d entries", hashCapacity);
         hashCapacity = 0;
         hashMask = 0;
         return;
     }
-    memset(hashIndex, 0xFF, sizeof(uint16_t) * hashCapacity); // Fill with HASH_EMPTY (0xFFFF)
-#endif
-}
-
-PacketHistory::~PacketHistory()
-{
-    recentPacketsCapacity = 0;
-    delete[] recentPackets;
-    recentPackets = NULL;
-#if !MESHTASTIC_EXCLUDE_PKT_HISTORY_HASH
-    delete[] hashIndex;
-    hashIndex = NULL;
-    hashCapacity = 0;
-    hashMask = 0;
+    memset(hashIndex.get(), 0xFF, sizeof(uint16_t) * hashCapacity); // Fill with HASH_EMPTY (0xFFFF)
 #endif
 }
 
@@ -285,7 +272,7 @@ void PacketHistory::hashRebuild()
 {
     if (!hashIndex)
         return;
-    memset(hashIndex, 0xFF, sizeof(uint16_t) * hashCapacity);
+    memset(hashIndex.get(), 0xFF, sizeof(uint16_t) * hashCapacity);
     for (uint32_t i = 0; i < recentPacketsCapacity; i++) {
         if (recentPackets[i].rxTimeMsec != 0)
             hashInsert(recentPackets[i].sender, recentPackets[i].id, (uint16_t)i);
@@ -332,7 +319,8 @@ PacketHistory::PacketRecord *PacketHistory::find(NodeNum sender, PacketId id)
 #endif
 
     // Linear scan (sole path when hash excluded, fallback when hash allocation failed)
-    for (PacketRecord *it = recentPackets; it < (recentPackets + recentPacketsCapacity); ++it) {
+    PacketRecord *base = recentPackets.get();
+    for (PacketRecord *it = base; it < (base + recentPacketsCapacity); ++it) {
         if (it->id == id && it->sender == sender) {
             return it;
         }
@@ -346,39 +334,38 @@ void PacketHistory::insert(const PacketRecord &r)
 {
     uint32_t now_millis = millis(); // Should not jump with time changes
     uint32_t OldtrxTimeMsec = 0;
+    PacketRecord *base = recentPackets.get();
     PacketRecord *tu = NULL; // Will insert here.
     PacketRecord *it = NULL;
 
     // Find a free, matching or oldest used slot in the recentPackets array
-    for (it = recentPackets; it < (recentPackets + recentPacketsCapacity); ++it) {
+    for (it = base; it < (base + recentPacketsCapacity); ++it) {
         if (it->id == 0 && it->sender == 0 /*&& rxTimeMsec == 0*/) { // Record is empty
             tu = it;                                                 // Remember the free slot
 #if VERBOSE_PACKET_HISTORY >= 2
-            LOG_DEBUG("Packet History - insert: Free slot@ %d/%d", tu - recentPackets, recentPacketsCapacity);
+            LOG_DEBUG("Packet History - insert: Free slot@ %d/%d", tu - base, recentPacketsCapacity);
 #endif
             // We have that, Exit the loop
-            it = (recentPackets + recentPacketsCapacity);
+            it = (base + recentPacketsCapacity);
         } else if (it->id == r.id && it->sender == r.sender) { // Record matches the packet we want to insert
             tu = it;                                           // Remember the matching slot
             OldtrxTimeMsec = now_millis - it->rxTimeMsec;      // ..and save current entry's age
 #if VERBOSE_PACKET_HISTORY >= 2
-            LOG_DEBUG("Packet History - insert: Matched slot@ %d/%d age=%d", tu - recentPackets, recentPacketsCapacity,
-                      OldtrxTimeMsec);
+            LOG_DEBUG("Packet History - insert: Matched slot@ %d/%d age=%d", tu - base, recentPacketsCapacity, OldtrxTimeMsec);
 #endif
             // We have that, Exit the loop
-            it = (recentPackets + recentPacketsCapacity);
+            it = (base + recentPacketsCapacity);
         } else {
             if (it->rxTimeMsec == 0) {
                 LOG_WARN(
                     "Packet History - insert: Found packet s=%08x id=%08x with rxTimeMsec = 0, slot %d/%d. Should never happen!",
-                    it->sender, it->id, it - recentPackets, recentPacketsCapacity);
+                    it->sender, it->id, it - base, recentPacketsCapacity);
             }
             if ((now_millis - it->rxTimeMsec) > OldtrxTimeMsec) { // 49.7 days rollover friendly
                 OldtrxTimeMsec = now_millis - it->rxTimeMsec;
                 tu = it; // remember the oldest packet
 #if VERBOSE_PACKET_HISTORY >= 2
-                LOG_DEBUG("Packet History - insert: Older slot@ %d/%d age=%d", tu - recentPackets, recentPacketsCapacity,
-                          OldtrxTimeMsec);
+                LOG_DEBUG("Packet History - insert: Older slot@ %d/%d age=%d", tu - base, recentPacketsCapacity, OldtrxTimeMsec);
 #endif
             }
             // keep looking for oldest till entire array is checked
@@ -393,13 +380,11 @@ void PacketHistory::insert(const PacketRecord &r)
 
 #if VERBOSE_PACKET_HISTORY
     if (tu->id == 0 && tu->sender == 0) {
-        LOG_DEBUG("Packet History - insert: slot@ %d/%d is NEW", tu - recentPackets, recentPacketsCapacity);
+        LOG_DEBUG("Packet History - insert: slot@ %d/%d is NEW", tu - base, recentPacketsCapacity);
     } else if (tu->id == r.id && tu->sender == r.sender) {
-        LOG_DEBUG("Packet History - insert: slot@ %d/%d MATCHED, age=%d", tu - recentPackets, recentPacketsCapacity,
-                  OldtrxTimeMsec);
+        LOG_DEBUG("Packet History - insert: slot@ %d/%d MATCHED, age=%d", tu - base, recentPacketsCapacity, OldtrxTimeMsec);
     } else {
-        LOG_DEBUG("Packet History - insert: slot@ %d/%d REUSE OLDEST, age=%d", tu - recentPackets, recentPacketsCapacity,
-                  OldtrxTimeMsec);
+        LOG_DEBUG("Packet History - insert: slot@ %d/%d REUSE OLDEST, age=%d", tu - base, recentPacketsCapacity, OldtrxTimeMsec);
     }
 #endif
 
@@ -432,9 +417,9 @@ void PacketHistory::insert(const PacketRecord &r)
 #endif
 
 #if VERBOSE_PACKET_HISTORY
-    LOG_DEBUG("Packet History - insert: Store slot@ %d/%d s=%08x id=%08x nh=%02x rby=%02x %02x %02x rxT=%d BEFORE",
-              tu - recentPackets, recentPacketsCapacity, tu->sender, tu->id, tu->next_hop, tu->relayed_by[0], tu->relayed_by[1],
-              tu->relayed_by[2], tu->rxTimeMsec);
+    LOG_DEBUG("Packet History - insert: Store slot@ %d/%d s=%08x id=%08x nh=%02x rby=%02x %02x %02x rxT=%d BEFORE", tu - base,
+              recentPacketsCapacity, tu->sender, tu->id, tu->next_hop, tu->relayed_by[0], tu->relayed_by[1], tu->relayed_by[2],
+              tu->rxTimeMsec);
 #endif
 
     if (r.rxTimeMsec == 0) {
@@ -454,16 +439,16 @@ void PacketHistory::insert(const PacketRecord &r)
     *tu = r; // store the packet
 
     if (!isMatchingSlot) {
-        hashInsert(r.sender, r.id, (uint16_t)(tu - recentPackets));
+        hashInsert(r.sender, r.id, (uint16_t)(tu - base));
     }
 #else
     *tu = r; // store the packet
 #endif
 
 #if VERBOSE_PACKET_HISTORY
-    LOG_DEBUG("Packet History - insert: Store slot@ %d/%d s=%08x id=%08x nh=%02x rby=%02x %02x %02x rxT=%d AFTER",
-              tu - recentPackets, recentPacketsCapacity, tu->sender, tu->id, tu->next_hop, tu->relayed_by[0], tu->relayed_by[1],
-              tu->relayed_by[2], tu->rxTimeMsec);
+    LOG_DEBUG("Packet History - insert: Store slot@ %d/%d s=%08x id=%08x nh=%02x rby=%02x %02x %02x rxT=%d AFTER", tu - base,
+              recentPacketsCapacity, tu->sender, tu->id, tu->next_hop, tu->relayed_by[0], tu->relayed_by[1], tu->relayed_by[2],
+              tu->rxTimeMsec);
 #endif
 }
 

src/mesh/PacketHistory.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "NodeDB.h"
+#include <memory>
 
 // Number of relayers we keep track of. Use 6 to be efficient with memory alignment of PacketRecord to 20 bytes
 #define NUM_RELAYERS 6
@@ -26,7 +27,7 @@ class PacketHistory
 
     uint32_t recentPacketsCapacity =
         0; // Can be set in constructor, no need to recompile. Used to allocate memory for mx_recentPackets.
-    PacketRecord *recentPackets = NULL; // Simple and fixed in size. Debloat.
+    std::unique_ptr<PacketRecord[]> recentPackets; // Simple and fixed in size. Debloat.
 
 #if !MESHTASTIC_EXCLUDE_PKT_HISTORY_HASH
     // Open-addressing hash table for O(1) lookup in find(), replacing the O(N) linear scan.
@@ -34,7 +35,7 @@ class PacketHistory
     // The load factor invariant holds permanently: hashCapacity = 2 * nextPowerOf2(recentPacketsCapacity),
     // and at most recentPacketsCapacity entries can ever be live (one per recentPackets[] slot).
     static constexpr uint16_t HASH_EMPTY = 0xFFFF;
-    uint16_t *hashIndex = NULL;
+    std::unique_ptr<uint16_t[]> hashIndex;
     uint32_t hashCapacity = 0; // Always a power of 2
     uint32_t hashMask = 0;     // hashCapacity - 1, for fast modular indexing
 
@@ -64,11 +65,8 @@ class PacketHistory
     uint8_t getOurTxHopLimit(const PacketRecord &r);
     void setOurTxHopLimit(PacketRecord &r, uint8_t hopLimit);
 
-    PacketHistory(const PacketHistory &);            // non construction-copyable
-    PacketHistory &operator=(const PacketHistory &); // non copyable
   public:
     explicit PacketHistory(uint32_t size = -1); // Constructor with size parameter, default is PACKETHISTORY_MAX
-    ~PacketHistory();
 
     /**
      * Update recentBroadcasts and return true if we have already seen this packet
@@ -100,5 +98,5 @@ class PacketHistory
     void removeRelayer(const uint8_t relayer, const uint32_t id, const NodeNum sender);
 
     // To check if the PacketHistory was initialized correctly by constructor
-    bool initOk(void) { return recentPackets != NULL && recentPacketsCapacity != 0; }
+    bool initOk(void) { return recentPackets != nullptr && recentPacketsCapacity != 0; }
 };

src/mesh/RF95Interface.cpp

@@ -252,7 +252,7 @@ bool RF95Interface::reconfigure()
 
     startReceive(); // restart receiving
 
-    return RADIOLIB_ERR_NONE;
+    return true;
 }
 
 /**

src/mesh/RadioInterface.cpp

@@ -5,6 +5,7 @@
 #include "LR1110Interface.h"
 #include "LR1120Interface.h"
 #include "LR1121Interface.h"
+#include "LR2021Interface.h"
 #include "MeshRadio.h"
 #include "MeshService.h"
 #include "NodeDB.h"
@@ -478,6 +479,20 @@ std::unique_ptr<RadioInterface> initLoRa()
     }
 #endif
 
+#if defined(USE_LR2021) && RADIOLIB_EXCLUDE_LR2021 != 1
+    if (!rIf) {
+        rIf = std::unique_ptr<LR2021Interface>(
+            new LR2021Interface(loraHal, LR2021_SPI_NSS_PIN, LR2021_IRQ_PIN, LR2021_NRESET_PIN, LR2021_BUSY_PIN));
+        if (!rIf->init()) {
+            LOG_WARN("No LR2021 radio");
+            rIf = nullptr;
+        } else {
+            LOG_INFO("LR2021 init success");
+            radioType = LR2021_RADIO;
+        }
+    }
+#endif
+
 #if defined(USE_SX1280) && RADIOLIB_EXCLUDE_SX128X != 1
     if (!rIf) {
         rIf = std::unique_ptr<SX1280Interface>(new SX1280Interface(loraHal, SX128X_CS, SX128X_DIO1, SX128X_RESET, SX128X_BUSY));

src/mesh/SX126xInterface.cpp

@@ -262,7 +262,7 @@ template <typename T> bool SX126xInterface<T>::reconfigure()
 
     startReceive(); // restart receiving
 
-    return RADIOLIB_ERR_NONE;
+    return true;
 }
 
 template <typename T> void SX126xInterface<T>::disableInterrupt()

src/mesh/SX128xInterface.cpp

@@ -153,7 +153,7 @@ template <typename T> bool SX128xInterface<T>::reconfigure()
 
     startReceive(); // restart receiving
 
-    return RADIOLIB_ERR_NONE;
+    return true;
 }
 
 template <typename T> void SX128xInterface<T>::disableInterrupt()

src/modules/StoreForwardModule.cpp

@@ -80,9 +80,9 @@ void StoreForwardModule::populatePSRAM()
         (this->records ? this->records : (((memGet.getFreePsram() / 4) * 3) / sizeof(PacketHistoryStruct)));
     this->records = numberOfPackets;
 #if defined(ARCH_ESP32)
-    this->packetHistory = static_cast<PacketHistoryStruct *>(ps_calloc(numberOfPackets, sizeof(PacketHistoryStruct)));
+    this->packetHistory.reset(static_cast<PacketHistoryStruct *>(ps_calloc(numberOfPackets, sizeof(PacketHistoryStruct))));
 #elif defined(ARCH_PORTDUINO)
-    this->packetHistory = static_cast<PacketHistoryStruct *>(calloc(numberOfPackets, sizeof(PacketHistoryStruct)));
+    this->packetHistory.reset(static_cast<PacketHistoryStruct *>(calloc(numberOfPackets, sizeof(PacketHistoryStruct))));
 
 #endif
 

src/modules/StoreForwardModule.h

@@ -7,6 +7,7 @@
 #include "configuration.h"
 #include <Arduino.h>
 #include <functional>
+#include <memory>
 #include <unordered_map>
 
 struct PacketHistoryStruct {
@@ -29,11 +30,17 @@ struct PacketHistoryStruct {
 
 class StoreForwardModule : private concurrency::OSThread, public ProtobufModule<meshtastic_StoreAndForward>
 {
+    // packetHistory is allocated with ps_calloc / calloc, so it must be released with free(),
+    // not delete[].
+    struct CFreeDeleter {
+        void operator()(PacketHistoryStruct *p) const noexcept { free(p); }
+    };
+
     bool busy = 0;
     uint32_t busyTo = 0;
     char routerMessage[meshtastic_Constants_DATA_PAYLOAD_LEN] = {0};
 
-    PacketHistoryStruct *packetHistory = 0;
+    std::unique_ptr<PacketHistoryStruct[], CFreeDeleter> packetHistory;
     uint32_t packetHistoryTotalCount = 0;
     uint32_t last_time = 0;
     uint32_t requestCount = 0;

src/mqtt/MQTT.cpp

@@ -409,6 +409,9 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
 
 void mqttInit()
 {
+    if (!moduleConfig.mqtt.enabled)
+        return;
+
     new MQTT();
 }
 

src/platform/portduino/PortduinoGlue.cpp

@@ -18,6 +18,7 @@
 #include <fstream>
 #include <iostream>
 #include <map>
+#include <memory>
 #include <set>
 #include <stdexcept>
 #include <sys/ioctl.h>
@@ -301,10 +302,9 @@ void portduinoSetup()
         // Try CH341
         try {
             std::cout << "autoconf: Looking for CH341 device..." << std::endl;
-            ch341Hal = new Ch341Hal(0, portduino_config.lora_usb_serial_num, portduino_config.lora_usb_vid,
-                                    portduino_config.lora_usb_pid);
-            ch341Hal->getProductString(autoconf_product, 95);
-            delete ch341Hal;
+            auto probe = std::unique_ptr<Ch341Hal>(new Ch341Hal(0, portduino_config.lora_usb_serial_num,
+                                                                portduino_config.lora_usb_vid, portduino_config.lora_usb_pid));
+            probe->getProductString(autoconf_product, 95);
             std::cout << "autoconf: Found CH341 device " << autoconf_product << std::endl;
 
             found_ch341 = true;

test/test_mqtt/MQTT.cpp

@@ -800,6 +800,17 @@ void test_disabled(void)
     TEST_ASSERT_FALSE(mqtt->isEnabled());
 }
 
+void test_mqttInitSkipsAllocationWhenDisabled(void)
+{
+    delete unitTest;
+    mqtt = unitTest = NULL;
+
+    moduleConfig.mqtt.enabled = false;
+    mqttInit();
+
+    TEST_ASSERT_NULL(mqtt);
+}
+
 // Subscriptions contain the moduleConfig.mqtt.root prefix.
 void test_customMqttRoot(void)
 {
@@ -912,6 +923,7 @@ void setup()
     RUN_TEST(test_usingCustomServer);
     RUN_TEST(test_enabled);
     RUN_TEST(test_disabled);
+    RUN_TEST(test_mqttInitSkipsAllocationWhenDisabled);
     RUN_TEST(test_customMqttRoot);
     RUN_TEST(test_configEmptyIsValid);
     RUN_TEST(test_configEnabledEmptyIsValid);

variants/esp32/chatter2/platformio.ini

@@ -12,4 +12,4 @@ build_flags =
 lib_deps =
   ${esp32_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21

variants/esp32/esp32-common.ini

@@ -71,7 +71,7 @@ lib_deps =
   # renovate: datasource=custom.pio depName=NimBLE-Arduino packageName=h2zero/library/NimBLE-Arduino
   h2zero/NimBLE-Arduino@1.4.3
   # renovate: datasource=git-refs depName=libpax packageName=https://github.com/dbinfrago/libpax gitBranch=master
-  https://github.com/dbinfrago/libpax/archive/3cdc0371c375676a97967547f4065607d4c53fd1.zip
+  https://github.com/dbinfrago/libpax/archive/df424747f9acb86ab07c5a206ded1e8e3650726a.zip
   # renovate: datasource=custom.pio depName=XPowersLib packageName=lewisxhe/library/XPowersLib
   lewisxhe/XPowersLib@0.3.3
   # renovate: datasource=custom.pio depName=rweather/Crypto packageName=rweather/library/Crypto

variants/esp32/m5stack_core/platformio.ini

@@ -35,4 +35,4 @@ lib_ignore =
 lib_deps = 
   ${esp32_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21

variants/esp32/wiphone/platformio.ini

@@ -11,7 +11,7 @@ build_flags =
 lib_deps = 
   ${esp32_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=custom.pio depName=SX1509 IO Expander packageName=sparkfun/library/SX1509 IO Expander
   sparkfun/SX1509 IO Expander@3.0.6
   # renovate: datasource=custom.pio depName=APA102 packageName=pololu/library/APA102

variants/esp32s3/heltec_v4/platformio.ini

@@ -133,6 +133,6 @@ build_flags =
 lib_deps = ${heltec_v4_base.lib_deps}
   ${device-ui_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=git-refs depName=Quency-D_chsc6x packageName=https://github.com/Quency-D/chsc6x gitBranch=master
   https://github.com/Quency-D/chsc6x/archive/5cbead829d6b432a8d621ed1aafd4eb474fd4f27.zip

variants/esp32s3/heltec_v4_r8/platformio.ini

@@ -140,6 +140,6 @@ build_flags =
 lib_deps = ${heltec_v4_r8_base.lib_deps}
   ${device-ui_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=git-refs depName=Quency-D_chsc6x packageName=https://github.com/Quency-D/chsc6x gitBranch=master
   https://github.com/Quency-D/chsc6x/archive/3b2b6cebf3177b3e2c33d06e07909b0b10159516.zip

variants/esp32s3/heltec_wireless_tracker/platformio.ini

@@ -24,4 +24,4 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21

variants/esp32s3/heltec_wireless_tracker_V1_0/platformio.ini

@@ -22,4 +22,4 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21

variants/esp32s3/heltec_wireless_tracker_v2/platformio.ini

@@ -21,4 +21,4 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21

variants/esp32s3/mesh-tab/platformio.ini

@@ -55,7 +55,7 @@ lib_deps =
   ${esp32s3_base.lib_deps}
   ${device-ui_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
 
 [mesh_tab_xpt2046]
 extends = mesh_tab_base

variants/esp32s3/picomputer-s3/platformio.ini

@@ -25,7 +25,7 @@ build_flags =
 lib_deps = 
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
 
 build_src_filter =
   ${esp32s3_base.build_src_filter}

variants/esp32s3/rak_wismesh_tap_v2/platformio.ini

@@ -37,7 +37,7 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
 
 [env:rak_wismesh_tap_v2-tft]
 extends = env:rak_wismesh_tap_v2

variants/esp32s3/t-deck/platformio.ini

@@ -29,7 +29,7 @@ build_flags = ${esp32s3_base.build_flags}
 
 lib_deps = ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=git-refs depName=ESP8266Audio packageName=https://github.com/meshtastic/ESP8266Audio gitBranch=meshtastic-2.0.0-dacfix
   https://github.com/meshtastic/ESP8266Audio/archive/343024632ee78d6216907b2353fc943a62422d80.zip
   # renovate: datasource=custom.pio depName=ESP8266SAM packageName=earlephilhower/library/ESP8266SAM

variants/esp32s3/t-watch-s3/platformio.ini

@@ -22,7 +22,7 @@ build_flags = ${esp32s3_base.build_flags}
 
 lib_deps = ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=custom.pio depName=SensorLib packageName=lewisxhe/library/SensorLib
   lewisxhe/SensorLib@0.3.4
   # renovate: datasource=custom.pio depName=Adafruit DRV2605 packageName=adafruit/library/Adafruit DRV2605 Library

variants/esp32s3/tlora-pager/platformio.ini

@@ -33,7 +33,7 @@ build_flags = ${esp32s3_base.build_flags}
 
 lib_deps = ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # renovate: datasource=git-refs depName=ESP8266Audio packageName=https://github.com/meshtastic/ESP8266Audio gitBranch=meshtastic-2.0.0-dacfix
   https://github.com/meshtastic/ESP8266Audio/archive/343024632ee78d6216907b2353fc943a62422d80.zip
   # renovate: datasource=custom.pio depName=ESP8266SAM packageName=earlephilhower/library/ESP8266SAM

variants/esp32s3/tracksenger/platformio.ini

@@ -22,7 +22,7 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
 
 [env:tracksenger-lcd]
 custom_meshtastic_hw_model = 48
@@ -48,7 +48,7 @@ build_flags =
 lib_deps =
   ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
 
 [env:tracksenger-oled]
 custom_meshtastic_hw_model = 48

variants/esp32s3/unphone/platformio.ini

@@ -37,7 +37,7 @@ build_src_filter =
 
 lib_deps = ${esp32s3_base.lib_deps}
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   # TODO renovate https://gitlab.com/hamishcunningham/unphonelibrary#meshtastic@9.0.0
   https://gitlab.com/hamishcunningham/unphonelibrary/-/archive/meshtastic/unphonelibrary-meshtastic.zip
 

variants/native/portduino.ini

@@ -27,7 +27,7 @@ lib_deps =
   # renovate: datasource=custom.pio depName=rweather/Crypto packageName=rweather/library/Crypto
   rweather/Crypto@0.4.0
   # renovate: datasource=custom.pio depName=LovyanGFX packageName=lovyan03/library/LovyanGFX
-  lovyan03/LovyanGFX@1.2.19
+  lovyan03/LovyanGFX@1.2.21
   ; # renovate: datasource=git-refs depName=libch341-spi-userspace packageName=https://github.com/pine64/libch341-spi-userspace gitBranch=main
   https://github.com/pine64/libch341-spi-userspace/archive/23c42319a69cffcb65868e3c72e6bed83974a393.zip
   # renovate: datasource=custom.pio depName=adafruit/Adafruit seesaw Library packageName=adafruit/library/Adafruit seesaw Library

variants/nrf52840/diy/nrf52_promicro_diy_tcxo/platformio.ini

@@ -15,6 +15,7 @@ board = promicro-nrf52840
 build_flags = ${nrf52840_base.build_flags}
   -I variants/nrf52840/diy/nrf52_promicro_diy_tcxo
   -D NRF52_PROMICRO_DIY
+  ; -D RADIOLIB_GODMODE=1 ; needed for some LR2021 items, but not enabled by default.
 build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/diy/nrf52_promicro_diy_tcxo>
 debug_tool = jlink
 

variants/nrf52840/diy/nrf52_promicro_diy_tcxo/rfswitch.h

@@ -1,5 +1,11 @@
+#pragma once
 #include "RadioLib.h"
 
+// Keep LR20x0 naming while RadioLib exposes LR2021 symbols.
+#ifndef LR20x0
+#define LR20x0 LR2021
+#endif
+
 // This is rewritten to match the requirements of the E80-900M2213S
 // The E80 does not conform to the reference Semtech switches(!) and therefore needs a custom matrix.
 // See footnote #3 in "https://www.cdebyte.com/products/E80-900M2213S/2#Pin"
@@ -13,14 +19,35 @@ static const uint32_t rfswitch_dio_pins[] = {RADIOLIB_LR11X0_DIO5, RADIOLIB_LR11
 
 static const Module::RfSwitchMode_t rfswitch_table[] = {
     // clang-format off
-    // mode            DIO5  DIO6  DIO7
-    {LR11x0::MODE_STBY, {LOW, LOW, LOW}},
-    {LR11x0::MODE_RX, {LOW, HIGH, LOW}},
-    {LR11x0::MODE_TX, {HIGH, HIGH, LOW}},
-    {LR11x0::MODE_TX_HP, {HIGH, LOW, LOW}},
-    {LR11x0::MODE_TX_HF, {LOW, LOW, LOW}},
-    {LR11x0::MODE_GNSS, {LOW, LOW, HIGH}},
-    {LR11x0::MODE_WIFI, {LOW, LOW, LOW}},
+    // mode              DIO5  DIO6  DIO7
+    {LR11x0::MODE_STBY,  {LOW,  LOW,  LOW}},
+    {LR11x0::MODE_RX,    {LOW,  HIGH, LOW}},
+    {LR11x0::MODE_TX,    {HIGH, HIGH, LOW}},
+    {LR11x0::MODE_TX_HP, {HIGH, LOW,  LOW}},
+    {LR11x0::MODE_TX_HF, {LOW,  LOW,  LOW}},
+    {LR11x0::MODE_GNSS,  {LOW,  LOW,  HIGH}},
+    {LR11x0::MODE_WIFI,  {LOW,  LOW,  LOW}},
+    END_OF_MODE_TABLE,
+    // clang-format on
+};
+
+// LR2021 RF switch matrix following the standard Semtech / Seeed T1000-E reference topology.
+// DIO5 -> antenna path select (HIGH = sub-GHz LF)
+// DIO6 -> TX enable / HP PA select
+// DIO7 -> not connected (no GNSS on LR2021)
+// DIO8 -> RF front-end power enable
+
+static const uint32_t lr20x0_rfswitch_dio_pins[] = {RADIOLIB_LR2021_DIO5, RADIOLIB_LR2021_DIO6, RADIOLIB_LR2021_DIO7,
+                                                    RADIOLIB_LR2021_DIO8, RADIOLIB_NC};
+
+static const Module::RfSwitchMode_t lr20x0_rfswitch_table[] = {
+    // clang-format off
+    // mode               DIO5  DIO6  DIO7  DIO8
+    {LR20x0::MODE_STBY,   {LOW,  LOW,  LOW,  LOW}},
+    {LR20x0::MODE_RX,     {HIGH, LOW,  LOW,  HIGH}},
+    {LR20x0::MODE_TX,     {HIGH, HIGH, LOW,  HIGH}},
+    {LR20x0::MODE_RX_HF,  {LOW,  LOW,  LOW,  LOW}},
+    {LR20x0::MODE_TX_HF,  {LOW,  LOW,  LOW,  LOW}},
     END_OF_MODE_TABLE,
     // clang-format on
 };

variants/nrf52840/diy/nrf52_promicro_diy_tcxo/variant.h

@@ -155,6 +155,16 @@ NRF52 PRO MICRO PIN ASSIGNMENT
 #define LR11X0_DIO_AS_RF_SWITCH
 #endif
 
+// LR2021
+#define USE_LR2021
+#define LR2021_IRQ_PIN (0 + 10)      // P0.10 IRQ
+#define LR2021_NRESET_PIN LORA_RESET // P0.09 NRST
+#define LR2021_BUSY_PIN (0 + 29)     // P0.29 BUSY
+#define LR2021_SPI_NSS_PIN LORA_CS   // P1.13
+#define LR2021_DIO3_TCXO_VOLTAGE 1.8
+#define LR2021_DIO_AS_RF_SWITCH
+#define LR2021_IRQ_DIO_NUM 9 // DIO9 → P0.10
+
 // #define SX126X_MAX_POWER 8 set this if using a high-power board!
 
 /*

version.properties

@@ -1,4 +1,4 @@
 [VERSION]  
 major = 2
 minor = 7
-build = 23
+build = 24