Merge remote-tracking branch 'upstream/dev' into 2026/remote-lna

docs/cli_commands.md

@@ -51,7 +51,7 @@
 - `time <epoch_seconds>`
 
 **Parameters:**
-- `epoc_seconds`: Unix epoc time
+- `epoch_seconds`: Unix epoch time
 
 ---
 
@@ -134,7 +134,7 @@
 
 ---
 
-### End capture of rx log to node sotrage
+### End capture of rx log to node storage
 **Usage:** `log stop`
 
 ---
@@ -198,7 +198,7 @@
 
 **Default:** Varies by board
 
-**Notes:** This setting only controls the power level of the LoRa chip. Some nodes have an additional power amplifier stage which increases the total output. Referr to the node's manual for the correct setting to use. **Setting a value too high may violate the laws in your country.**
+**Notes:** This setting only controls the power level of the LoRa chip. Some nodes have an additional power amplifier stage which increases the total output. Refer to the node's manual for the correct setting to use. **Setting a value too high may violate the laws in your country.**
 
 ---
 
@@ -228,6 +228,7 @@
 **Default:** `869.525`
 
 **Note:** Requires reboot to apply
+**Serial Only:** `set freq <frequency>`
 
 ### System
 
@@ -293,17 +294,16 @@
 
 #### View or change this node's admin password
 **Usage:**
-- `get password`
+- `password <new_password>`
-- `set password <password>`
 
 **Parameters:**
-- `password`: Admin password
+- `new_password`: New admin password
 
 **Set by build flag:** `ADMIN_PASSWORD`
 
 **Default:** `password`
 
-**Note:** Echoed back for confirmation
+**Note:** Command reply echoes the updated password for confirmation.
 
 **Note:** Any node using this password will be added to the admin ACL list.
 
@@ -768,7 +768,7 @@ region save
 - `gps advert <policy>`
 
 **Parameters:** 
-- `policy`: `none`|`shared`|`prefs` 
+- `policy`: `none`|`share`|`prefs` 
   - `none`: don't include location in adverts
   - `share`: share gps location (from SensorManager)
   - `prefs`: location stored in node's lat and lon settings

examples/companion_radio/DataStore.cpp

@@ -229,7 +229,8 @@ void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& no
     file.read((uint8_t *)&_prefs.gps_enabled, sizeof(_prefs.gps_enabled));                 // 85
     file.read((uint8_t *)&_prefs.gps_interval, sizeof(_prefs.gps_interval));               // 86
     file.read((uint8_t *)&_prefs.autoadd_config, sizeof(_prefs.autoadd_config));           // 87
-    file.read((uint8_t *)&_prefs.sx126x_rx_boosted_gain, sizeof(_prefs.sx126x_rx_boosted_gain)); // 88
+    file.read((uint8_t *)&_prefs.autoadd_max_hops, sizeof(_prefs.autoadd_max_hops));       // 88
+    file.read((uint8_t *)&_prefs.sx126x_rx_boosted_gain, sizeof(_prefs.sx126x_rx_boosted_gain)); // 89
 
     file.close();
   }
@@ -266,7 +267,8 @@ void DataStore::savePrefs(const NodePrefs& _prefs, double node_lat, double node_
     file.write((uint8_t *)&_prefs.gps_enabled, sizeof(_prefs.gps_enabled));                 // 85
     file.write((uint8_t *)&_prefs.gps_interval, sizeof(_prefs.gps_interval));               // 86
     file.write((uint8_t *)&_prefs.autoadd_config, sizeof(_prefs.autoadd_config));           // 87
-    file.write((uint8_t *)&_prefs.sx126x_rx_boosted_gain, sizeof(_prefs.sx126x_rx_boosted_gain)); // 88
+    file.write((uint8_t *)&_prefs.autoadd_max_hops, sizeof(_prefs.autoadd_max_hops));       // 88
+    file.write((uint8_t *)&_prefs.sx126x_rx_boosted_gain, sizeof(_prefs.sx126x_rx_boosted_gain)); // 89
 
     file.close();
   }

examples/companion_radio/MyMesh.cpp

@@ -318,6 +318,10 @@ bool MyMesh::shouldOverwriteWhenFull() const {
   return (_prefs.autoadd_config & AUTO_ADD_OVERWRITE_OLDEST) != 0;
 }
 
+uint8_t MyMesh::getAutoAddMaxHops() const {
+  return _prefs.autoadd_max_hops;
+}
+
 void MyMesh::onContactOverwrite(const uint8_t* pub_key) {
     _store->deleteBlobByKey(pub_key, PUB_KEY_SIZE); // delete from storage
   if (_serial->isConnected()) {
@@ -1797,12 +1801,16 @@ void MyMesh::handleCmdFrame(size_t len) {
     }
   } else if (cmd_frame[0] == CMD_SET_AUTOADD_CONFIG) {
     _prefs.autoadd_config = cmd_frame[1];
+    if (len >= 3) {
+      _prefs.autoadd_max_hops = min(cmd_frame[2], (uint8_t)64);
+    }
     savePrefs();
-    writeOKFrame();  
+    writeOKFrame();
   } else if (cmd_frame[0] == CMD_GET_AUTOADD_CONFIG) {
     int i = 0;
     out_frame[i++] = RESP_CODE_AUTOADD_CONFIG;
     out_frame[i++] = _prefs.autoadd_config;
+    out_frame[i++] = _prefs.autoadd_max_hops;
     _serial->writeFrame(out_frame, i);
   } else if (cmd_frame[0] == CMD_GET_ALLOWED_REPEAT_FREQ) {
     int i = 0;

examples/companion_radio/MyMesh.h

@@ -119,6 +119,7 @@ protected:
   bool isAutoAddEnabled() const override;
   bool shouldAutoAddContactType(uint8_t type) const override;
   bool shouldOverwriteWhenFull() const override;
+  uint8_t getAutoAddMaxHops() const override;
   void onContactsFull() override;
   void onContactOverwrite(const uint8_t* pub_key) override;
   bool onContactPathRecv(ContactInfo& from, uint8_t* in_path, uint8_t in_path_len, uint8_t* out_path, uint8_t out_path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override;

examples/companion_radio/NodePrefs.h

@@ -31,4 +31,5 @@ struct NodePrefs {  // persisted to file
   uint8_t sx126x_rx_boosted_gain; // SX126x RX boosted gain mode (0=power saving, 1=boosted)
   uint8_t client_repeat;
   uint8_t path_hash_mode;    // which path mode to use when sending
+  uint8_t autoadd_max_hops;  // 0 = no limit, 1 = direct (0 hops), N = up to N-1 hops (max 64)
 };

examples/simple_repeater/MyMesh.cpp

@@ -396,6 +396,23 @@ File MyMesh::openAppend(const char *fname) {
 #endif
 }
 
+static uint8_t max_loop_minimal[] =  { 0, /* 1-byte */  4, /* 2-byte */  2, /* 3-byte */  1 };
+static uint8_t max_loop_moderate[] = { 0, /* 1-byte */  2, /* 2-byte */  1, /* 3-byte */  1 };
+static uint8_t max_loop_strict[] =   { 0, /* 1-byte */  1, /* 2-byte */  1, /* 3-byte */  1 };
+
+bool MyMesh::isLooped(const mesh::Packet* packet, const uint8_t max_counters[]) {
+  uint8_t hash_size = packet->getPathHashSize();
+  uint8_t hash_count = packet->getPathHashCount();
+  uint8_t n = 0;
+  const uint8_t* path = packet->path;
+  while (hash_count > 0) {      // count how many times this node is already in the path
+    if (self_id.isHashMatch(path, hash_size)) n++;
+    hash_count--;
+    path += hash_size;
+  }
+  return n >= max_counters[hash_size];
+}
+
 bool MyMesh::allowPacketForward(const mesh::Packet *packet) {
   if (_prefs.disable_fwd) return false;
   if (packet->isRouteFlood() && packet->getPathHashCount() >= _prefs.flood_max) return false;
@@ -403,6 +420,20 @@ bool MyMesh::allowPacketForward(const mesh::Packet *packet) {
     MESH_DEBUG_PRINTLN("allowPacketForward: unknown transport code, or wildcard not allowed for FLOOD packet");
     return false;
   }
+  if (packet->isRouteFlood() && _prefs.loop_detect != LOOP_DETECT_OFF) {
+    const uint8_t* maximums;
+    if (_prefs.loop_detect == LOOP_DETECT_MINIMAL) {
+      maximums = max_loop_minimal;
+    } else if (_prefs.loop_detect == LOOP_DETECT_MODERATE) {
+      maximums = max_loop_moderate;
+    } else {
+      maximums = max_loop_strict;
+    }
+    if (isLooped(packet, maximums)) {
+      MESH_DEBUG_PRINTLN("allowPacketForward: FLOOD packet loop detected!");
+      return false;
+    }
+  }
   return true;
 }
 

examples/simple_repeater/MyMesh.h

@@ -128,6 +128,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   mesh::Packet* createSelfAdvert();
 
   File openAppend(const char* fname);
+  bool isLooped(const mesh::Packet* packet, const uint8_t max_counters[]);
 
 protected:
   float getAirtimeBudgetFactor() const override {

src/helpers/BaseChatMesh.cpp

@@ -141,6 +141,15 @@ void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id,
       return;
     }
 
+    // check hop limit for new contacts (0 = no limit, 1 = direct (0 hops), N = up to N-1 hops)
+    uint8_t max_hops = getAutoAddMaxHops();
+    if (max_hops > 0 && packet->getPathHashCount() >= max_hops) {
+      ContactInfo ci;
+      populateContactFromAdvert(ci, id, parser, timestamp);
+      onDiscoveredContact(ci, true, packet->path_len, packet->path);       // let UI know
+      return;
+    }
+
     from = allocateContactSlot();
     if (from == NULL) {
       ContactInfo ci;

src/helpers/BaseChatMesh.h

@@ -98,6 +98,7 @@ protected:
   virtual bool shouldAutoAddContactType(uint8_t type) const { return true; }
   virtual void onContactsFull() {};
   virtual bool shouldOverwriteWhenFull() const { return false; }
+  virtual uint8_t getAutoAddMaxHops() const { return 0; }  // 0 = no limit, 1 = direct (0 hops), N = up to N-1 hops
   virtual void onContactOverwrite(const uint8_t* pub_key) {};
   virtual void onDiscoveredContact(ContactInfo& contact, bool is_new, uint8_t path_len, const uint8_t* path) = 0;
   virtual ContactInfo* processAck(const uint8_t *data) = 0;

src/helpers/CommonCLI.cpp

@@ -51,7 +51,7 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     file.read((uint8_t *)&_prefs->tx_power_dbm, sizeof(_prefs->tx_power_dbm));        // 76
     file.read((uint8_t *)&_prefs->disable_fwd, sizeof(_prefs->disable_fwd));          // 77
     file.read((uint8_t *)&_prefs->advert_interval, sizeof(_prefs->advert_interval));  // 78
-    file.read((uint8_t *)pad, 1); // 79 : 1 byte unused
+    file.read((uint8_t *)&_prefs->sx126x_rx_boosted_gain, sizeof(_prefs->sx126x_rx_boosted_gain)); // 79
     file.read((uint8_t *)&_prefs->rx_delay_base, sizeof(_prefs->rx_delay_base));      // 80
     file.read((uint8_t *)&_prefs->tx_delay_factor, sizeof(_prefs->tx_delay_factor));  // 84
     file.read((uint8_t *)&_prefs->guest_password[0], sizeof(_prefs->guest_password)); // 88
@@ -63,9 +63,9 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     file.read((uint8_t *)&_prefs->multi_acks, sizeof(_prefs->multi_acks));                         // 115
     file.read((uint8_t *)&_prefs->bw, sizeof(_prefs->bw));                                         // 116
     file.read((uint8_t *)&_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));         // 120
-    file.read((uint8_t *)&_prefs->sx126x_rx_boosted_gain, sizeof(_prefs->sx126x_rx_boosted_gain)); // 121
+    file.read((uint8_t *)&_prefs->path_hash_mode, sizeof(_prefs->path_hash_mode));                 // 121
-    file.read((uint8_t *)&_prefs->path_hash_mode, sizeof(_prefs->path_hash_mode));                 // 122
+    file.read((uint8_t *)&_prefs->loop_detect, sizeof(_prefs->loop_detect));                       // 122
-    file.read(pad, 1); // 123 : 1 byte unused
+    file.read(pad, 1);                                                                             // 123
     file.read((uint8_t *)&_prefs->flood_max, sizeof(_prefs->flood_max));                           // 124
     file.read((uint8_t *)&_prefs->flood_advert_interval, sizeof(_prefs->flood_advert_interval));   // 125
     file.read((uint8_t *)&_prefs->interference_threshold, sizeof(_prefs->interference_threshold)); // 126
@@ -141,7 +141,7 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
     file.write((uint8_t *)&_prefs->tx_power_dbm, sizeof(_prefs->tx_power_dbm));        // 76
     file.write((uint8_t *)&_prefs->disable_fwd, sizeof(_prefs->disable_fwd));          // 77
     file.write((uint8_t *)&_prefs->advert_interval, sizeof(_prefs->advert_interval));  // 78
-    file.write((uint8_t *)pad, 1); // 79 : 1 byte unused
+    file.write((uint8_t *)&_prefs->sx126x_rx_boosted_gain, sizeof(_prefs->sx126x_rx_boosted_gain)); // 79
     file.write((uint8_t *)&_prefs->rx_delay_base, sizeof(_prefs->rx_delay_base));      // 80
     file.write((uint8_t *)&_prefs->tx_delay_factor, sizeof(_prefs->tx_delay_factor));  // 84
     file.write((uint8_t *)&_prefs->guest_password[0], sizeof(_prefs->guest_password)); // 88
@@ -153,9 +153,9 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
     file.write((uint8_t *)&_prefs->multi_acks, sizeof(_prefs->multi_acks));                         // 115
     file.write((uint8_t *)&_prefs->bw, sizeof(_prefs->bw));                                         // 116
     file.write((uint8_t *)&_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));         // 120
-    file.write((uint8_t *)&_prefs->sx126x_rx_boosted_gain, sizeof(_prefs->sx126x_rx_boosted_gain)); // 121
+    file.write((uint8_t *)&_prefs->path_hash_mode, sizeof(_prefs->path_hash_mode));                 // 121
-    file.write((uint8_t *)&_prefs->path_hash_mode, sizeof(_prefs->path_hash_mode));                 // 122
+    file.write((uint8_t *)&_prefs->loop_detect, sizeof(_prefs->loop_detect));                       // 122
-    file.write(pad, 1); // 123 : 1 byte unused
+    file.write(pad, 1);                                                                             // 123
     file.write((uint8_t *)&_prefs->flood_max, sizeof(_prefs->flood_max));                           // 124
     file.write((uint8_t *)&_prefs->flood_advert_interval, sizeof(_prefs->flood_advert_interval));   // 125
     file.write((uint8_t *)&_prefs->interference_threshold, sizeof(_prefs->interference_threshold)); // 126
@@ -208,6 +208,10 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       // Reset clock
       getRTCClock()->setCurrentTime(1715770351);  // 15 May 2024, 8:50pm
       _board->reboot();  // doesn't return
+     } else if (memcmp(command, "advert.zerohop", 14) == 0 && (command[14] == 0 || command[14] == ' ')) {
+      // send zerohop advert
+      _callbacks->sendSelfAdvertisement(1500, false);  // longer delay, give CLI response time to be sent first
+      strcpy(reply, "OK - zerohop advert sent");
     } else if (memcmp(command, "advert", 6) == 0) {
       // send flood advert
       _callbacks->sendSelfAdvertisement(1500, true);  // longer delay, give CLI response time to be sent first
@@ -339,6 +343,16 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         *reply = 0;  // set null terminator
       } else if (memcmp(config, "path.hash.mode", 14) == 0) {
         sprintf(reply, "> %d", (uint32_t)_prefs->path_hash_mode);
+      } else if (memcmp(config, "loop.detect", 11) == 0) {
+        if (_prefs->loop_detect == LOOP_DETECT_OFF) {
+          strcpy(reply, "> off");
+        } else if (_prefs->loop_detect == LOOP_DETECT_MINIMAL) {
+          strcpy(reply, "> minimal");
+        } else if (_prefs->loop_detect == LOOP_DETECT_MODERATE) {
+          strcpy(reply, "> moderate");
+        } else {
+          strcpy(reply, "> strict");
+        }
       } else if (memcmp(config, "tx", 2) == 0 && (config[2] == 0 || config[2] == ' ')) {
         sprintf(reply, "> %d", (int32_t) _prefs->tx_power_dbm);
       } else if (memcmp(config, "freq", 4) == 0) {
@@ -587,6 +601,26 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         } else {
           strcpy(reply, "Error, must be 0,1, or 2");
         }
+      } else if (memcmp(config, "loop.detect ", 12) == 0) {
+        config += 12;
+        uint8_t mode;
+        if (memcmp(config, "off", 3) == 0) {
+          mode = LOOP_DETECT_OFF;
+        } else if (memcmp(config, "minimal", 7) == 0) {
+          mode = LOOP_DETECT_MINIMAL;
+        } else if (memcmp(config, "moderate", 8) == 0) {
+          mode = LOOP_DETECT_MODERATE;
+        } else if (memcmp(config, "strict", 6) == 0) {
+          mode = LOOP_DETECT_STRICT;
+        } else {
+          mode = 0xFF;
+          strcpy(reply, "Error, must be: off, minimal, moderate, or strict");
+        }
+        if (mode != 0xFF) {
+          _prefs->loop_detect = mode;
+          savePrefs();
+          strcpy(reply, "OK");
+        }
       } else if (memcmp(config, "tx ", 3) == 0) {
         _prefs->tx_power_dbm = atoi(&config[3]);
         savePrefs();
@@ -733,6 +767,9 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       LocationProvider * l = _sensors->getLocationProvider();
       if (l != NULL) {
         l->syncTime();
+        strcpy(reply, "ok");
+      } else {
+        strcpy(reply, "gps provider not found");
       }
     } else if (memcmp(command, "gps setloc", 10) == 0) {
       _prefs->node_lat = _sensors->node_lat;
@@ -762,7 +799,7 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         _prefs->advert_loc_policy = ADVERT_LOC_SHARE;
         savePrefs();
         strcpy(reply, "ok");
-      } else if (memcmp(command+11, "prefs", 4) == 0) {
+      } else if (memcmp(command+11, "prefs", 5) == 0) {
         _prefs->advert_loc_policy = ADVERT_LOC_PREFS;
         savePrefs();
         strcpy(reply, "ok");

src/helpers/CommonCLI.h

@@ -13,6 +13,11 @@
 #define ADVERT_LOC_SHARE      1
 #define ADVERT_LOC_PREFS      2
 
+#define LOOP_DETECT_OFF       0
+#define LOOP_DETECT_MINIMAL   1
+#define LOOP_DETECT_MODERATE  2
+#define LOOP_DETECT_STRICT    3
+
 struct NodePrefs { // persisted to file
   float airtime_factor;
   char node_name[32];
@@ -54,6 +59,7 @@ struct NodePrefs { // persisted to file
   char owner_info[120];
   uint8_t sx126x_rx_boosted_gain; // power settings
   uint8_t path_hash_mode;   // which path mode to use when sending
+  uint8_t loop_detect;
 };
 
 class CommonCLICallbacks {

src/helpers/RefCountedDigitalPin.h

@@ -20,7 +20,10 @@ public:
       digitalWrite(_pin, _active);
     }
   }
+
   void release() {
+    if (_claims == 0) return; // avoid negative _claims
+
     _claims--;
     if (_claims == 0) {
       digitalWrite(_pin, !_active);

src/helpers/radiolib/CustomLLCC68Wrapper.h

@@ -2,6 +2,7 @@
 
 #include "CustomLLCC68.h"
 #include "RadioLibWrappers.h"
+#include "SX126xReset.h"
 
 class CustomLLCC68Wrapper : public RadioLibWrapper {
 public:
@@ -19,4 +20,6 @@ public:
     int sf = ((CustomLLCC68 *)_radio)->spreadingFactor;
     return packetScoreInt(snr, sf, packet_len);
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
 };

src/helpers/radiolib/CustomLR1110.h

@@ -20,6 +20,8 @@ class CustomLR1110 : public LR1110 {
       return len;
     }
     
+    float getFreqMHz() const { return freqMHz; }
+
     bool isReceiving() {
       uint16_t irq = getIrqStatus();
       bool detected = ((irq & RADIOLIB_LR11X0_IRQ_SYNC_WORD_HEADER_VALID) || (irq & RADIOLIB_LR11X0_IRQ_PREAMBLE_DETECTED));

src/helpers/radiolib/CustomLR1110Wrapper.h

@@ -2,11 +2,13 @@
 
 #include "CustomLR1110.h"
 #include "RadioLibWrappers.h"
+#include "LR11x0Reset.h"
 
 class CustomLR1110Wrapper : public RadioLibWrapper {
 public:
   CustomLR1110Wrapper(CustomLR1110& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceivingPacket() override { 
+  void doResetAGC() override { lr11x0ResetAGC((LR11x0 *)_radio, ((CustomLR1110 *)_radio)->getFreqMHz()); }
+  bool isReceivingPacket() override {
     return ((CustomLR1110 *)_radio)->isReceiving();
   }
   float getCurrentRSSI() override {

src/helpers/radiolib/CustomSTM32WLxWrapper.h

@@ -2,6 +2,7 @@
 
 #include "CustomSTM32WLx.h"
 #include "RadioLibWrappers.h"
+#include "SX126xReset.h"
 #include <math.h>
 
 class CustomSTM32WLxWrapper : public RadioLibWrapper {
@@ -20,4 +21,6 @@ public:
     int sf = ((CustomSTM32WLx *)_radio)->spreadingFactor;
     return packetScoreInt(snr, sf, packet_len);
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
 };

src/helpers/radiolib/CustomSX1262Wrapper.h

@@ -2,6 +2,7 @@
 
 #include "CustomSX1262.h"
 #include "RadioLibWrappers.h"
+#include "SX126xReset.h"
 
 #ifndef USE_SX1262
 #define USE_SX1262
@@ -26,4 +27,6 @@ public:
   virtual void powerOff() override {
     ((CustomSX1262 *)_radio)->sleep(false);
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
 };

src/helpers/radiolib/CustomSX1268Wrapper.h

@@ -2,6 +2,7 @@
 
 #include "CustomSX1268.h"
 #include "RadioLibWrappers.h"
+#include "SX126xReset.h"
 
 #ifndef USE_SX1268
 #define USE_SX1268
@@ -23,4 +24,6 @@ public:
     int sf = ((CustomSX1268 *)_radio)->spreadingFactor;
     return packetScoreInt(snr, sf, packet_len);
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
 };

src/helpers/radiolib/LR11x0Reset.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <RadioLib.h>
+
+// Full receiver reset for LR11x0-family chips (LR1110, LR1120, LR1121).
+// Warm sleep powers down analog, calibrate(0x3F) refreshes all calibration blocks,
+// then re-applies RX settings that calibration may reset.
+inline void lr11x0ResetAGC(LR11x0* radio, float freqMHz) {
+  radio->sleep(true, 0);
+  radio->standby(RADIOLIB_LR11X0_STANDBY_RC, true);
+
+  radio->calibrate(RADIOLIB_LR11X0_CALIBRATE_ALL);
+
+  // calibrate(0x3F) defaults image calibration to 902-928MHz band.
+  // Re-calibrate for the actual operating frequency (band=4MHz matches RadioLib default).
+  radio->calibrateImageRejection(freqMHz - 4.0f, freqMHz + 4.0f);
+
+#ifdef RX_BOOSTED_GAIN
+  radio->setRxBoostedGainMode(RX_BOOSTED_GAIN);
+#endif
+}

src/helpers/radiolib/RadioLibWrappers.cpp

@@ -53,13 +53,24 @@ void RadioLibWrapper::triggerNoiseFloorCalibrate(int threshold) {
   }
 }
 
+void RadioLibWrapper::doResetAGC() {
+  _radio->sleep();  // warm sleep to reset analog frontend
+}
+
 void RadioLibWrapper::resetAGC() {
   // make sure we're not mid-receive of packet!
   if ((state & STATE_INT_READY) != 0 || isReceivingPacket()) return;
 
-  // NOTE: according to higher powers, just issuing RadioLib's startReceive() will reset the AGC.
+  doResetAGC();
-  //      revisit this if a better impl is discovered.
   state = STATE_IDLE;   // trigger a startReceive()
+
+  // Reset noise floor sampling so it reconverges from scratch.
+  // Without this, a stuck _noise_floor of -120 makes the sampling threshold
+  // too low (-106) to accept normal samples (~-105), self-reinforcing the
+  // stuck value even after the receiver has recovered.
+  _noise_floor = 0;
+  _num_floor_samples = 0;
+  _floor_sample_sum = 0;
 }
 
 void RadioLibWrapper::loop() {

src/helpers/radiolib/RadioLibWrappers.h

@@ -16,6 +16,7 @@ protected:
   void startRecv();
   float packetScoreInt(float snr, int sf, int packet_len);
   virtual bool isReceivingPacket() =0;
+  virtual void doResetAGC();
 
 public:
   RadioLibWrapper(PhysicalLayer& radio, mesh::MainBoard& board) : _radio(&radio), _board(&board) { n_recv = n_sent = 0; }

src/helpers/radiolib/SX126xReset.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <RadioLib.h>
+
+// Full receiver reset for all SX126x-family chips (SX1262, SX1268, LLCC68, STM32WLx).
+// Warm sleep powers down analog, Calibrate(0x7F) refreshes ADC/PLL/image calibration,
+// then re-applies RX settings that calibration may reset.
+inline void sx126xResetAGC(SX126x* radio) {
+  radio->sleep(true);
+  radio->standby(RADIOLIB_SX126X_STANDBY_RC, true);
+
+  uint8_t calData = RADIOLIB_SX126X_CALIBRATE_ALL;
+  radio->mod->SPIwriteStream(RADIOLIB_SX126X_CMD_CALIBRATE, &calData, 1, true, false);
+  radio->mod->hal->delay(5);
+  uint32_t start = millis();
+  while (radio->mod->hal->digitalRead(radio->mod->getGpio())) {
+    if (millis() - start > 50) break;
+    radio->mod->hal->yield();
+  }
+
+  // Calibrate(0x7F) defaults image calibration to 902-928MHz band.
+  // Re-calibrate for the actual operating frequency.
+  radio->calibrateImage(radio->freqMHz);
+
+#ifdef SX126X_DIO2_AS_RF_SWITCH
+  radio->setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
+#endif
+#ifdef SX126X_RX_BOOSTED_GAIN
+  radio->setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+#endif
+#ifdef SX126X_REGISTER_PATCH
+  uint8_t r_data = 0;
+  radio->readRegister(0x8B5, &r_data, 1);
+  r_data |= 0x01;
+  radio->writeRegister(0x8B5, &r_data, 1);
+#endif
+}

src/helpers/sensors/EnvironmentSensorManager.cpp

@@ -683,7 +683,7 @@ void EnvironmentSensorManager::start_gps() {
   _location->begin();
   _location->reset();
 
-#ifndef PIN_GPS_RESET
+#ifndef PIN_GPS_EN
   MESH_DEBUG_PRINTLN("Start GPS is N/A on this board. Actual GPS state unchanged");
 #endif
 }
@@ -707,7 +707,9 @@ void EnvironmentSensorManager::loop() {
   static long next_gps_update = 0;
 
   #if ENV_INCLUDE_GPS
-  _location->loop();
+  if (gps_active) {
+    _location->loop();
+  }
   if (millis() > next_gps_update) {
 
     if(gps_active){

src/helpers/sensors/MicroNMEALocationProvider.h

@@ -79,7 +79,10 @@ public :
         if (_pin_en != -1) {
             digitalWrite(_pin_en, !PIN_GPS_EN_ACTIVE);
         }
-        if (_peripher_power) _peripher_power->release();  
+        if (_pin_reset != -1) {
+            digitalWrite(_pin_reset, GPS_RESET_FORCE);
+        }
+        if (_peripher_power) _peripher_power->release();
     }
 
     bool isEnabled() override {

variants/heltec_tracker/platformio.ini

@@ -33,6 +33,11 @@ build_flags =
   -D PIN_TFT_LEDA_CTL=21     ; LEDK (switches on/off via mosfet to create the ground)
   -D PIN_GPS_RX=33
   -D PIN_GPS_TX=34
+  -D PIN_GPS_EN=35              ; N-ch MOSFET Q2 drives P-ch high-side switch → active HIGH (default)
+  -D PIN_GPS_RESET=36
+  -D PIN_GPS_RESET_ACTIVE=LOW
+  -D GPS_BAUD_RATE=115200
+  -D ENV_INCLUDE_GPS=1
   -D SX126X_DIO2_AS_RF_SWITCH=true
   -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_CURRENT_LIMIT=140

variants/heltec_tracker/target.cpp

@@ -16,7 +16,8 @@ WRAPPER_CLASS radio_driver(radio, board);
 
 ESP32RTCClock fallback_clock;
 AutoDiscoverRTCClock rtc_clock(fallback_clock);
-MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1);
+// GPS_EN (GPIO35) drives N-ch MOSFET → P-ch high-side switch; GPS_RESET (GPIO36) active LOW
+MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock, GPS_RESET, GPS_EN, &board.periph_power);
 HWTSensorManager sensors = HWTSensorManager(nmea);
 
 #ifdef DISPLAY_CLASS
@@ -58,18 +59,16 @@ mesh::LocalIdentity radio_new_identity() {
 
 void HWTSensorManager::start_gps() {
   if (!gps_active) {
-    board.periph_power.claim();
+    _location->begin();  // Claims periph_power via RefCountedDigitalPin
-
     gps_active = true;
-    Serial1.println("$CFGSYS,h35155*68");
+    Serial1.println("$CFGSYS,h35155*68");  // Configure GPS for all constellations
   }
 }
 
 void HWTSensorManager::stop_gps() {
   if (gps_active) {
     gps_active = false;
-
+    _location->stop();  // Releases periph_power via RefCountedDigitalPin
-    board.periph_power.release();
   }
 }
 

variants/heltec_tracker/target.h

@@ -28,6 +28,7 @@ public:
   const char* getSettingName(int i) const override;
   const char* getSettingValue(int i) const override;
   bool setSettingValue(const char* name, const char* value) override;
+  LocationProvider* getLocationProvider() override { return _location; }
 };
 
 extern HeltecV3Board board;

variants/heltec_tracker_v2/HeltecTrackerV2Board.cpp

@@ -6,18 +6,26 @@ void HeltecTrackerV2Board::begin() {
     pinMode(PIN_ADC_CTRL, OUTPUT);
     digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
 
+    // Set up digital GPIO registers before releasing RTC hold. The hold latches
+    // the pad state including function select, so register writes accumulate
+    // without affecting the pad. On hold release, all changes apply atomically
+    // (IO MUX switches to digital GPIO with output already HIGH — no glitch).
     pinMode(P_LORA_PA_POWER, OUTPUT);
     digitalWrite(P_LORA_PA_POWER,HIGH);
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_POWER);
 
-    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
     pinMode(P_LORA_PA_EN, OUTPUT);
     digitalWrite(P_LORA_PA_EN,HIGH);
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
     pinMode(P_LORA_PA_TX_EN, OUTPUT);
     digitalWrite(P_LORA_PA_TX_EN,LOW);
 
-    periph_power.begin();
-
     esp_reset_reason_t reason = esp_reset_reason();
+    if (reason != ESP_RST_DEEPSLEEP) {
+      delay(1);  // GC1109 startup time after cold power-on
+    }
+
+    periph_power.begin();
     if (reason == ESP_RST_DEEPSLEEP) {
       long wakeup_source = esp_sleep_get_ext1_wakeup_status();
       if (wakeup_source & (1 << P_LORA_DIO_1)) {  // received a LoRa packet (while in deep sleep)
@@ -48,7 +56,9 @@ void HeltecTrackerV2Board::begin() {
 
     rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
 
-    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN); //It also needs to be enabled in receive mode
+    // Hold GC1109 FEM pins during sleep to keep LNA active for RX wake
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN);
 
     if (pin_wake_btn < 0) {
       esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet

variants/heltec_tracker_v2/platformio.ini

@@ -18,11 +18,11 @@ build_flags =
   -D P_LORA_SCLK=9
   -D P_LORA_MISO=11
   -D P_LORA_MOSI=10
-  -D P_LORA_PA_POWER=7 ;power en
+  -D P_LORA_PA_POWER=7   ; VFEM_Ctrl - GC1109 LDO power enable
-  -D P_LORA_PA_EN=4
+  -D P_LORA_PA_EN=4      ; CSD - GC1109 chip enable (HIGH=on)
-  -D P_LORA_PA_TX_EN=46  ;enable tx
+  -D P_LORA_PA_TX_EN=46  ; CPS - GC1109 PA mode (HIGH=full PA, LOW=bypass)
-  -D LORA_TX_POWER=10 ;If it is configured as 10 here, the final output will be 22 dbm.
+  -D LORA_TX_POWER=10    ; 10dBm + ~11dB GC1109 gain = ~21dBm output
-  -D MAX_LORA_TX_POWER=22 ;Max SX1262 output
+  -D MAX_LORA_TX_POWER=22 ; Max SX1262 output -> ~28dBm at antenna
   -D SX126X_DIO2_AS_RF_SWITCH=true
   -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_CURRENT_LIMIT=140

variants/heltec_v4/HeltecV4Board.cpp

@@ -7,19 +7,26 @@ void HeltecV4Board::begin() {
     pinMode(PIN_ADC_CTRL, OUTPUT);
     digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
 
+    // Set up digital GPIO registers before releasing RTC hold. The hold latches
+    // the pad state including function select, so register writes accumulate
+    // without affecting the pad. On hold release, all changes apply atomically
+    // (IO MUX switches to digital GPIO with output already HIGH — no glitch).
     pinMode(P_LORA_PA_POWER, OUTPUT);
     digitalWrite(P_LORA_PA_POWER,HIGH);
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_POWER);
 
-    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
     pinMode(P_LORA_PA_EN, OUTPUT);
     digitalWrite(P_LORA_PA_EN,HIGH);
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
     pinMode(P_LORA_PA_TX_EN, OUTPUT);
     digitalWrite(P_LORA_PA_TX_EN,LOW);
 
+    esp_reset_reason_t reason = esp_reset_reason();
+    if (reason != ESP_RST_DEEPSLEEP) {
+      delay(1);  // GC1109 startup time after cold power-on
+    }
 
     periph_power.begin();
-
-    esp_reset_reason_t reason = esp_reset_reason();
     if (reason == ESP_RST_DEEPSLEEP) {
       long wakeup_source = esp_sleep_get_ext1_wakeup_status();
       if (wakeup_source & (1 << P_LORA_DIO_1)) {  // received a LoRa packet (while in deep sleep)
@@ -50,7 +57,9 @@ void HeltecV4Board::begin() {
 
     rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
 
-    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN); //It also needs to be enabled in receive mode
+    // Hold GC1109 FEM pins during sleep to keep LNA active for RX wake
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN);
 
     if (pin_wake_btn < 0) {
       esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet

variants/heltec_v4/platformio.ini

@@ -23,7 +23,7 @@ build_flags =
   -D P_LORA_PA_TX_EN=46  ; PA CPS - GC1109 TX PA full(High) / bypass(Low)
   -D PIN_USER_BTN=0
   -D PIN_VEXT_EN=36
-  -D PIN_VEXT_EN_ACTIVE=LOW
+  -D PIN_VEXT_EN_ACTIVE=HIGH
   -D LORA_TX_POWER=10 ;If it is configured as 10 here, the final output will be 22 dbm.
   -D MAX_LORA_TX_POWER=22 ; Max SX1262 output
   -D SX126X_REGISTER_PATCH=1       ; Patch register 0x8B5 for improved RX
@@ -55,8 +55,6 @@ build_flags =
   -D PIN_BOARD_SDA=17
   -D PIN_BOARD_SCL=18
   -D PIN_OLED_RESET=21
-  -D ENV_PIN_SDA=4
-  -D ENV_PIN_SCL=3
 build_src_filter= ${Heltec_lora32_v4.build_src_filter}
 lib_deps = ${Heltec_lora32_v4.lib_deps}
 

variants/heltec_v4/target.cpp

@@ -24,7 +24,7 @@ AutoDiscoverRTCClock rtc_clock(fallback_clock);
 #endif
 
 #ifdef DISPLAY_CLASS
-  DISPLAY_CLASS display(&(board.periph_power));
+  DISPLAY_CLASS display(NULL);
   MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
 #endif
 

variants/ikoka_handheld_nrf/platformio.ini

@@ -1,5 +1,7 @@
 [ikoka_handheld_nrf]
 extends = nrf52_base
+board = seeed-xiao-afruitnrf52-nrf52840
+board_build.ldscript = boards/nrf52840_s140_v7.ld
 build_flags = ${nrf52_base.build_flags}
   ${sensor_base.build_flags}
   -I lib/nrf52/s140_nrf52_7.3.0_API/include
@@ -49,7 +51,8 @@ build_src_filter = ${ikoka_handheld_nrf.build_src_filter}
   +<../examples/companion_radio/*.cpp>
 
 [env:ikoka_handheld_nrf_e22_30dbm_096_companion_radio_ble]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
+board_build.ldscript = boards/nrf52840_s140_v7_extrafs.ld
 build_flags = ${ikoka_handheld_nrf_ssd1306_companion.build_flags}
   -D BLE_PIN_CODE=123456
   -D LORA_TX_POWER=20
@@ -57,7 +60,8 @@ build_src_filter = ${ikoka_handheld_nrf_ssd1306_companion.build_src_filter}
   +<helpers/nrf52/SerialBLEInterface.cpp>
 
 [env:ikoka_handheld_nrf_e22_30dbm_096_rotated_companion_radio_ble]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
+board_build.ldscript = boards/nrf52840_s140_v7_extrafs.ld
 build_flags = ${ikoka_handheld_nrf_ssd1306_companion.build_flags}
   -D BLE_PIN_CODE=123456
   -D LORA_TX_POWER=20
@@ -66,20 +70,22 @@ build_src_filter = ${ikoka_handheld_nrf_ssd1306_companion.build_src_filter}
   +<helpers/nrf52/SerialBLEInterface.cpp>
 
 [env:ikoka_handheld_nrf_e22_30dbm_096_companion_radio_usb]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
+board_build.ldscript = boards/nrf52840_s140_v7_extrafs.ld
 build_flags = ${ikoka_handheld_nrf_ssd1306_companion.build_flags}
   -D LORA_TX_POWER=20
 build_src_filter = ${ikoka_handheld_nrf_ssd1306_companion.build_src_filter}
 
 [env:ikoka_handheld_nrf_e22_30dbm_096_rotated_companion_radio_usb]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
+board_build.ldscript = boards/nrf52840_s140_v7_extrafs.ld
 build_flags = ${ikoka_handheld_nrf_ssd1306_companion.build_flags}
   -D LORA_TX_POWER=20
   -D DISPLAY_ROTATION=2
 build_src_filter = ${ikoka_handheld_nrf_ssd1306_companion.build_src_filter}
 
 [env:ikoka_handheld_nrf_e22_30dbm_repeater]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
 build_flags =
   ${ikoka_handheld_nrf.build_flags}
   -D ADVERT_NAME='"ikoka_handheld Repeater"'
@@ -92,7 +98,7 @@ build_src_filter = ${ikoka_handheld_nrf.build_src_filter}
   +<../examples/simple_repeater/*.cpp>
 
 [env:ikoka_handheld_nrf_e22_30dbm_room_server]
-extends = ikoka_nrf52
+extends = ikoka_handheld_nrf
 build_flags =
   ${ikoka_handheld_nrf.build_flags}
   -D ADVERT_NAME='"ikoka_handheld Room"'

variants/rak3401/RAK3401Board.cpp

@@ -20,13 +20,29 @@ void RAK3401Board::begin() {
 
   Wire.begin();
 
+  // PIN_3V3_EN (WB_IO2, P0.34) controls the 3V3_S switched peripheral rail
+  // AND the 5V boost regulator (U5) on the RAK13302 that powers the SKY66122 PA.
+  // Must stay HIGH during radio operation — do not toggle for power saving.
   pinMode(PIN_3V3_EN, OUTPUT);
   digitalWrite(PIN_3V3_EN, HIGH);
 
-#ifdef P_LORA_PA_EN
+  // Enable SKY66122-11 FEM on the RAK13302 module.
-  // Initialize RAK13302 1W LoRa transceiver module PA control pin
+  // CSD and CPS are tied together on the RAK13302 PCB, routed to IO3 (P0.21).
-  pinMode(P_LORA_PA_EN, OUTPUT);
+  // HIGH = FEM active (LNA for RX, PA path available for TX).
-  digitalWrite(P_LORA_PA_EN, LOW);  // Start with PA disabled
+  // TX/RX switching (CTX) is handled by SX1262 DIO2 via SetDIO2AsRfSwitchCtrl.
-  delay(10);  // Allow PA module to initialize
+  pinMode(SX126X_POWER_EN, OUTPUT);
+  digitalWrite(SX126X_POWER_EN, HIGH);
+  delay(1);  // SKY66122 turn-on settling time (tON = 3us typ)
+}
+
+#ifdef NRF52_POWER_MANAGEMENT
+void RAK3401Board::initiateShutdown(uint8_t reason) {
+  // Disable SKY66122 FEM (CSD+CPS LOW = shutdown, <1 uA)
+  digitalWrite(SX126X_POWER_EN, LOW);
+
+  // Disable 3V3 switched peripherals and 5V boost
+  digitalWrite(PIN_3V3_EN, LOW);
+
+  enterSystemOff(reason);
+}
 #endif
-}

variants/rak3401/RAK3401Board.h

@@ -38,13 +38,6 @@ public:
     return "RAK 3401";
   }
 
-#ifdef P_LORA_PA_EN
+  // TX/RX switching is handled by SX1262 DIO2 -> SKY66122 CTX (hardware-timed).
-  void onBeforeTransmit() override {
+  // No onBeforeTransmit/onAfterTransmit overrides needed.
-    digitalWrite(P_LORA_PA_EN, HIGH);  // Enable PA before transmission
-  }
-
-  void onAfterTransmit() override {
-    digitalWrite(P_LORA_PA_EN, LOW);   // Disable PA after transmission to save power
-  }
-#endif
 };

variants/rak3401/platformio.ini

@@ -12,6 +12,7 @@ build_flags = ${nrf52_base.build_flags}
   -D LORA_TX_POWER=22
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
+  -D SX126X_REGISTER_PATCH=1       ; Patch register 0x8B5 for improved RX with SKY66122 FEM
 build_src_filter = ${nrf52_base.build_src_filter}
   +<../variants/rak3401>
   +<helpers/sensors>

variants/rak3401/variant.h

@@ -147,8 +147,15 @@ static const uint8_t AREF = PIN_AREF;
 #define SX126X_BUSY (9)
 #define SX126X_RESET (4)
 
-#define SX126X_POWER_EN (21)
+// SKY66122-11 FEM control on the RAK13302 module:
-// DIO2 controlls an antenna switch and the TCXO voltage is controlled by DIO3
+//   CSD + CPS are tied together on the PCB, routed to WisBlock IO3 (P0.21).
+//   Setting IO3 HIGH enables the FEM (LNA for RX, PA path for TX).
+//   CTX is connected to SX1262 DIO2 — the radio handles TX/RX switching
+//   in hardware via SetDIO2AsRfSwitchCtrl (microsecond-accurate, no GPIO needed).
+//   The 5V boost for the PA is enabled by WB_IO2 (P0.34 = PIN_3V3_EN).
+#define SX126X_POWER_EN (21)        // P0.21 = IO3 -> SKY66122 CSD+CPS (FEM enable)
+
+// CTX is driven by SX1262 DIO2, not a GPIO
 #define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 
@@ -159,7 +166,6 @@ static const uint8_t AREF = PIN_AREF;
 #define P_LORA_DIO_1 SX126X_DIO1
 #define P_LORA_BUSY SX126X_BUSY
 #define P_LORA_RESET SX126X_RESET
-#define P_LORA_PA_EN  31
 
 // enables 3.3V periphery like GPS or IO Module
 // Do not toggle this for GPS power savings