Merge 96dabcb18b into 46c7d74760

Co-authored-by: sachaw <11172820+sachaw@users.noreply.github.com>

.trunk/trunk.yaml

@@ -8,8 +8,8 @@ plugins:
       uri: https://github.com/trunk-io/plugins
 lint:
   enabled:
-    - checkov@3.2.435
-    - renovate@40.36.2
+    - checkov@3.2.436
+    - renovate@40.42.2
     - prettier@3.5.3
     - trufflehog@3.88.35
     - yamllint@1.37.1
@@ -28,7 +28,7 @@ lint:
     - shellcheck@0.10.0
     - black@25.1.0
     - git-diff-check
-    - gitleaks@8.26.0
+    - gitleaks@8.27.0
     - clang-format@16.0.3
   ignore:
     - linters: [ALL]

protobufs

@@ -1 +1 @@
-Subproject commit 24c7a3d287a4bd269ce191827e5dabd8ce8f57a7
+Subproject commit db60f07ac298b6161ca553b3868b542cceadcac4

src/BluetoothCommon.h

@@ -14,6 +14,9 @@
 #define LEGACY_LOGRADIO_UUID "6c6fd238-78fa-436b-aacf-15c5be1ef2e2"
 #define LOGRADIO_UUID "5a3d6e49-06e6-4423-9944-e9de8cdf9547"
 
+#define GPWPL_SERVICE_UUID "0000181A-0000-1000-8000-00805f9b34fb"//gpwpl service uuid
+#define GPWPL_UUID "00002A6F-0000-1000-8000-00805f9b34fb"//gpwpl uuid
+
 // NRF52 wants these constants as byte arrays
 // Generated here https://yupana-engineering.com/online-uuid-to-c-array-converter - but in REVERSE BYTE ORDER
 extern const uint8_t MESH_SERVICE_UUID_16[], TORADIO_UUID_16[16u], FROMRADIO_UUID_16[], FROMNUM_UUID_16[], LOGRADIO_UUID_16[];

src/graphics/niche/Drivers/EInk/DEPG0213BNS800.h

@@ -5,7 +5,7 @@ E-Ink display driver
     - Manufacturer: DKE
     - Size: 2.13 inch
     - Resolution: 122px x 250px
-    - Flex connector marking: FPC-7528B
+    - Flex connector marking (not a unique identifier): FPC-7528B
 
     Note: this is from an older generation of DKE panels, which still used Solomon Systech controller ICs.
     DKE's website suggests that the latest DEPG0213BN displays may use Fitipower controllers instead.

src/graphics/niche/Drivers/EInk/DEPG0290BNS800.h

@@ -5,7 +5,7 @@ E-Ink display driver
     - Manufacturer: DKE
     - Size: 2.9 inch
     - Resolution: 128px x 296px
-    - Flex connector marking: FPC-7519 rev.b
+    - Flex connector marking (not a unique identifier): FPC-7519 rev.b
 
 */
 

src/graphics/niche/Drivers/EInk/GDEY0154D67.h

@@ -5,7 +5,7 @@ E-Ink display driver
     - Manufacturer: Goodisplay
     - Size: 1.54 inch
     - Resolution: 200px x 200px
-    - Flex connector marking: FPC-B001
+    - Flex connector marking (not a unique identifier): FPC-B001
 
 */
 

src/graphics/niche/Drivers/EInk/GDEY0213B74.h

@@ -5,7 +5,9 @@ E-Ink display driver
     - Manufacturer: Goodisplay
     - Size: 2.13 inch
     - Resolution: 250px x 122px
-    - Flex connector marking: FPC-A002
+    - Flex connector marking (not a unique identifier):
+      - FPC-A002
+      - FPC-A005 20.06.15 TRX
 
 */
 

src/graphics/niche/Drivers/EInk/HINK_E042A87.h

@@ -5,7 +5,7 @@ E-Ink display driver
     - Manufacturer: Holitech
     - Size: 4.2 inch
     - Resolution: 400px x 300px
-    - Flex connector marking: HINK-E042A07-FPC-A1
+    - Flex connector marking (not a unique identifier): HINK-E042A07-FPC-A1
     - Silver sticker with QR code, marked: HE042A87
 
     Note: as of Feb. 2025, these panels are used for "WeActStudio 4.2in B&W" display modules

src/graphics/niche/Drivers/EInk/LCMEN2R13ECC1.h

@@ -5,7 +5,6 @@ E-Ink display driver
     - Manufacturer: WISEVAST
     - Size: 2.13 inch
     - Resolution: 122px x 255px
-    - Flex connector marking: Soldering connector, no connector is needed
 
 */
 

src/graphics/niche/Drivers/EInk/LCMEN2R13EFC1.h

@@ -5,7 +5,7 @@ E-Ink display driver
     - Manufacturer: Wisevast
     - Size: 2.13 inch
     - Resolution: 122px x 250px
-    - Flex connector marking: HINK-E0213A162-FPC-A0 (Hidden, printed on back-side)
+    - Flex connector marking (not a unique identifier): HINK-E0213A162-FPC-A0 (Hidden, printed on back-side)
 
 Note: this display uses an uncommon controller IC, Fitipower JD79656.
 It is implemented as a "one-off", directly inheriting the EInk base class, unlike SSD16XX displays.

src/graphics/niche/Drivers/EInk/ZJY128296_029EAAMFGN.cpp

@@ -0,0 +1,59 @@
+#include "./ZJY128296_029EAAMFGN.h"
+
+#ifdef MESHTASTIC_INCLUDE_NICHE_GRAPHICS
+
+using namespace NicheGraphics::Drivers;
+
+// Map the display controller IC's output to the connected panel
+void ZJY128296_029EAAMFGN::configScanning()
+{
+    // "Driver output control"
+    // Scan gates from 0 to 295 (vertical resolution 296px)
+    sendCommand(0x01);
+    sendData(0x27); // Number of gates (295, bits 0-7)
+    sendData(0x01); // Number of gates (295, bit 8)
+    sendData(0x00); // (Do not invert scanning order)
+}
+
+// Specify which information is used to control the sequence of voltages applied to move the pixels
+// - For this display, configUpdateSequence() specifies that a suitable LUT will be loaded from
+//   the controller IC's OTP memory, when the update procedure begins.
+void ZJY128296_029EAAMFGN::configWaveform()
+{
+    sendCommand(0x3C); // Border waveform:
+    sendData(0x05);    // Screen border should follow LUT1 waveform (actively drive pixels white)
+
+    sendCommand(0x18); // Temperature sensor:
+    sendData(0x80);    // Use internal temperature sensor to select an appropriate refresh waveform
+}
+
+void ZJY128296_029EAAMFGN::configUpdateSequence()
+{
+    switch (updateType) {
+    case FAST:
+        sendCommand(0x22); // Set "update sequence"
+        sendData(0xFF);    // Will load LUT from OTP memory, Display mode 2 "differential refresh"
+        break;
+
+    case FULL:
+    default:
+        sendCommand(0x22); // Set "update sequence"
+        sendData(0xF7);    // Will load LUT from OTP memory
+        break;
+    }
+}
+
+// Once the refresh operation has been started,
+// begin periodically polling the display to check for completion, using the normal Meshtastic threading code
+// Only used when refresh is "async"
+void ZJY128296_029EAAMFGN::detachFromUpdate()
+{
+    switch (updateType) {
+    case FAST:
+        return beginPolling(50, 300); // At least 300ms for fast refresh
+    case FULL:
+    default:
+        return beginPolling(100, 2000); // At least 2 seconds for full refresh
+    }
+}
+#endif // MESHTASTIC_INCLUDE_NICHE_GRAPHICS

src/graphics/niche/Drivers/EInk/ZJY128296_029EAAMFGN.h

@@ -0,0 +1,44 @@
+/*
+
+E-Ink display driver
+    - ZJY128296-029EAAMFGN
+    - Manufacturer: Zhongjingyuan
+    - Size: 2.9 inch
+    - Resolution: 128px x 296px
+    - Flex connector label (not a unique identifier): FPC-A005 20.06.15 TRX
+
+    Note: as of Feb. 2025, these panels are used for "WeActStudio 2.9in B&W" display modules
+
+*/
+
+#pragma once
+
+#ifdef MESHTASTIC_INCLUDE_NICHE_GRAPHICS
+
+#include "configuration.h"
+
+#include "./SSD16XX.h"
+
+namespace NicheGraphics::Drivers
+{
+class ZJY128296_029EAAMFGN : public SSD16XX
+{
+    // Display properties
+  private:
+    static constexpr uint32_t width = 128;
+    static constexpr uint32_t height = 296;
+    static constexpr UpdateTypes supported = (UpdateTypes)(FULL | FAST);
+
+  public:
+    ZJY128296_029EAAMFGN() : SSD16XX(width, height, supported) {}
+
+  protected:
+    void configScanning() override;
+    void configWaveform() override;
+    void configUpdateSequence() override;
+    void detachFromUpdate() override;
+};
+
+} // namespace NicheGraphics::Drivers
+
+#endif // MESHTASTIC_INCLUDE_NICHE_GRAPHICS

src/main.cpp

@@ -337,12 +337,12 @@ void setup()
 
 #ifdef LED_POWER
     pinMode(LED_POWER, OUTPUT);
-    digitalWrite(LED_POWER, HIGH);
+    digitalWrite(LED_POWER, LED_STATE_ON);
 #endif
 
 #ifdef USER_LED
     pinMode(USER_LED, OUTPUT);
-    digitalWrite(USER_LED, LOW);
+    digitalWrite(USER_LED, HIGH ^ LED_STATE_ON);
 #endif
 
 #if defined(T_DECK)

src/mesh/NodeDB.cpp

@@ -1479,6 +1479,12 @@ void NodeDB::updatePosition(uint32_t nodeId, const meshtastic_Position &p, RxSou
     info->has_position = true;
     updateGUIforNode = info;
     notifyObservers(true); // Force an update whether or not our node counts have changed
+
+#if !MESHTASTIC_EXCLUDE_BLUETOOTH
+#ifdef ARCH_ESP32
+    nimbleBluetooth->Send_GPWPL(nodeId, info->user.short_name, info->position.latitude_i, info->position.longitude_i);
+#endif
+#endif
 }
 
 /** Update telemetry info for this node based on received metrics

src/mesh/generated/meshtastic/config.pb.cpp

@@ -65,6 +65,8 @@ PB_BIND(meshtastic_Config_SessionkeyConfig, meshtastic_Config_SessionkeyConfig,
 
 
 
+
+
 
 
 

src/mesh/generated/meshtastic/config.pb.h

@@ -88,6 +88,23 @@ typedef enum _meshtastic_Config_DeviceConfig_RebroadcastMode {
     meshtastic_Config_DeviceConfig_RebroadcastMode_CORE_PORTNUMS_ONLY = 5
 } meshtastic_Config_DeviceConfig_RebroadcastMode;
 
+/* Defines buzzer behavior for audio feedback */
+typedef enum _meshtastic_Config_DeviceConfig_BuzzerMode {
+    /* Default behavior.
+ Buzzer is enabled for all audio feedback including button presses and alerts. */
+    meshtastic_Config_DeviceConfig_BuzzerMode_ALL_ENABLED = 0,
+    /* Disabled.
+ All buzzer audio feedback is disabled. */
+    meshtastic_Config_DeviceConfig_BuzzerMode_DISABLED = 1,
+    /* Notifications Only.
+ Buzzer is enabled only for notifications and alerts, but not for button presses.
+ External notification config determines the specifics of the notification behavior. */
+    meshtastic_Config_DeviceConfig_BuzzerMode_NOTIFICATIONS_ONLY = 2,
+    /* Non-notification system buzzer tones only.
+ Buzzer is enabled only for non-notification tones such as button presses, startup, shutdown, but not for alerts. */
+    meshtastic_Config_DeviceConfig_BuzzerMode_SYSTEM_ONLY = 3
+} meshtastic_Config_DeviceConfig_BuzzerMode;
+
 /* Bit field of boolean configuration options, indicating which optional
  fields to include when assembling POSITION messages.
  Longitude, latitude, altitude, speed, heading, and DOP
@@ -335,6 +352,9 @@ typedef struct _meshtastic_Config_DeviceConfig {
     char tzdef[65];
     /* If true, disable the default blinking LED (LED_PIN) behavior on the device */
     bool led_heartbeat_disabled;
+    /* Controls buzzer behavior for audio feedback
+ Defaults to ENABLED */
+    meshtastic_Config_DeviceConfig_BuzzerMode buzzer_mode;
 } meshtastic_Config_DeviceConfig;
 
 /* Position Config */
@@ -618,6 +638,10 @@ extern "C" {
 #define _meshtastic_Config_DeviceConfig_RebroadcastMode_MAX meshtastic_Config_DeviceConfig_RebroadcastMode_CORE_PORTNUMS_ONLY
 #define _meshtastic_Config_DeviceConfig_RebroadcastMode_ARRAYSIZE ((meshtastic_Config_DeviceConfig_RebroadcastMode)(meshtastic_Config_DeviceConfig_RebroadcastMode_CORE_PORTNUMS_ONLY+1))
 
+#define _meshtastic_Config_DeviceConfig_BuzzerMode_MIN meshtastic_Config_DeviceConfig_BuzzerMode_ALL_ENABLED
+#define _meshtastic_Config_DeviceConfig_BuzzerMode_MAX meshtastic_Config_DeviceConfig_BuzzerMode_SYSTEM_ONLY
+#define _meshtastic_Config_DeviceConfig_BuzzerMode_ARRAYSIZE ((meshtastic_Config_DeviceConfig_BuzzerMode)(meshtastic_Config_DeviceConfig_BuzzerMode_SYSTEM_ONLY+1))
+
 #define _meshtastic_Config_PositionConfig_PositionFlags_MIN meshtastic_Config_PositionConfig_PositionFlags_UNSET
 #define _meshtastic_Config_PositionConfig_PositionFlags_MAX meshtastic_Config_PositionConfig_PositionFlags_SPEED
 #define _meshtastic_Config_PositionConfig_PositionFlags_ARRAYSIZE ((meshtastic_Config_PositionConfig_PositionFlags)(meshtastic_Config_PositionConfig_PositionFlags_SPEED+1))
@@ -669,6 +693,7 @@ extern "C" {
 
 #define meshtastic_Config_DeviceConfig_role_ENUMTYPE meshtastic_Config_DeviceConfig_Role
 #define meshtastic_Config_DeviceConfig_rebroadcast_mode_ENUMTYPE meshtastic_Config_DeviceConfig_RebroadcastMode
+#define meshtastic_Config_DeviceConfig_buzzer_mode_ENUMTYPE meshtastic_Config_DeviceConfig_BuzzerMode
 
 #define meshtastic_Config_PositionConfig_gps_mode_ENUMTYPE meshtastic_Config_PositionConfig_GpsMode
 
@@ -692,7 +717,7 @@ extern "C" {
 
 /* Initializer values for message structs */
 #define meshtastic_Config_init_default           {0, {meshtastic_Config_DeviceConfig_init_default}}
-#define meshtastic_Config_DeviceConfig_init_default {_meshtastic_Config_DeviceConfig_Role_MIN, 0, 0, 0, _meshtastic_Config_DeviceConfig_RebroadcastMode_MIN, 0, 0, 0, 0, "", 0}
+#define meshtastic_Config_DeviceConfig_init_default {_meshtastic_Config_DeviceConfig_Role_MIN, 0, 0, 0, _meshtastic_Config_DeviceConfig_RebroadcastMode_MIN, 0, 0, 0, 0, "", 0, _meshtastic_Config_DeviceConfig_BuzzerMode_MIN}
 #define meshtastic_Config_PositionConfig_init_default {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, _meshtastic_Config_PositionConfig_GpsMode_MIN}
 #define meshtastic_Config_PowerConfig_init_default {0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define meshtastic_Config_NetworkConfig_init_default {0, "", "", "", 0, _meshtastic_Config_NetworkConfig_AddressMode_MIN, false, meshtastic_Config_NetworkConfig_IpV4Config_init_default, "", 0, 0}
@@ -703,7 +728,7 @@ extern "C" {
 #define meshtastic_Config_SecurityConfig_init_default {{0, {0}}, {0, {0}}, 0, {{0, {0}}, {0, {0}}, {0, {0}}}, 0, 0, 0, 0}
 #define meshtastic_Config_SessionkeyConfig_init_default {0}
 #define meshtastic_Config_init_zero              {0, {meshtastic_Config_DeviceConfig_init_zero}}
-#define meshtastic_Config_DeviceConfig_init_zero {_meshtastic_Config_DeviceConfig_Role_MIN, 0, 0, 0, _meshtastic_Config_DeviceConfig_RebroadcastMode_MIN, 0, 0, 0, 0, "", 0}
+#define meshtastic_Config_DeviceConfig_init_zero {_meshtastic_Config_DeviceConfig_Role_MIN, 0, 0, 0, _meshtastic_Config_DeviceConfig_RebroadcastMode_MIN, 0, 0, 0, 0, "", 0, _meshtastic_Config_DeviceConfig_BuzzerMode_MIN}
 #define meshtastic_Config_PositionConfig_init_zero {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, _meshtastic_Config_PositionConfig_GpsMode_MIN}
 #define meshtastic_Config_PowerConfig_init_zero  {0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define meshtastic_Config_NetworkConfig_init_zero {0, "", "", "", 0, _meshtastic_Config_NetworkConfig_AddressMode_MIN, false, meshtastic_Config_NetworkConfig_IpV4Config_init_zero, "", 0, 0}
@@ -726,6 +751,7 @@ extern "C" {
 #define meshtastic_Config_DeviceConfig_disable_triple_click_tag 10
 #define meshtastic_Config_DeviceConfig_tzdef_tag 11
 #define meshtastic_Config_DeviceConfig_led_heartbeat_disabled_tag 12
+#define meshtastic_Config_DeviceConfig_buzzer_mode_tag 13
 #define meshtastic_Config_PositionConfig_position_broadcast_secs_tag 1
 #define meshtastic_Config_PositionConfig_position_broadcast_smart_enabled_tag 2
 #define meshtastic_Config_PositionConfig_fixed_position_tag 3
@@ -849,7 +875,8 @@ X(a, STATIC,   SINGULAR, BOOL,     double_tap_as_button_press,   8) \
 X(a, STATIC,   SINGULAR, BOOL,     is_managed,        9) \
 X(a, STATIC,   SINGULAR, BOOL,     disable_triple_click,  10) \
 X(a, STATIC,   SINGULAR, STRING,   tzdef,            11) \
-X(a, STATIC,   SINGULAR, BOOL,     led_heartbeat_disabled,  12)
+X(a, STATIC,   SINGULAR, BOOL,     led_heartbeat_disabled,  12) \
+X(a, STATIC,   SINGULAR, UENUM,    buzzer_mode,      13)
 #define meshtastic_Config_DeviceConfig_CALLBACK NULL
 #define meshtastic_Config_DeviceConfig_DEFAULT NULL
 
@@ -995,7 +1022,7 @@ extern const pb_msgdesc_t meshtastic_Config_SessionkeyConfig_msg;
 /* Maximum encoded size of messages (where known) */
 #define MESHTASTIC_MESHTASTIC_CONFIG_PB_H_MAX_SIZE meshtastic_Config_size
 #define meshtastic_Config_BluetoothConfig_size   10
-#define meshtastic_Config_DeviceConfig_size      98
+#define meshtastic_Config_DeviceConfig_size      100
 #define meshtastic_Config_DisplayConfig_size     32
 #define meshtastic_Config_LoRaConfig_size        85
 #define meshtastic_Config_NetworkConfig_IpV4Config_size 20

src/mesh/generated/meshtastic/device_ui.pb.h

@@ -55,6 +55,8 @@ typedef enum _meshtastic_Language {
     meshtastic_Language_SLOVENIAN = 15,
     /* Ukrainian */
     meshtastic_Language_UKRAINIAN = 16,
+    /* Bulgarian */
+    meshtastic_Language_BULGARIAN = 17,
     /* Simplified Chinese (experimental) */
     meshtastic_Language_SIMPLIFIED_CHINESE = 30,
     /* Traditional Chinese (experimental) */

src/mesh/generated/meshtastic/deviceonly.pb.h

@@ -360,7 +360,7 @@ extern const pb_msgdesc_t meshtastic_BackupPreferences_msg;
 /* Maximum encoded size of messages (where known) */
 /* meshtastic_NodeDatabase_size depends on runtime parameters */
 #define MESHTASTIC_MESHTASTIC_DEVICEONLY_PB_H_MAX_SIZE meshtastic_BackupPreferences_size
-#define meshtastic_BackupPreferences_size        2269
+#define meshtastic_BackupPreferences_size        2271
 #define meshtastic_ChannelFile_size              718
 #define meshtastic_DeviceState_size              1722
 #define meshtastic_NodeInfoLite_size             196

src/mesh/generated/meshtastic/localonly.pb.h

@@ -187,7 +187,7 @@ extern const pb_msgdesc_t meshtastic_LocalModuleConfig_msg;
 
 /* Maximum encoded size of messages (where known) */
 #define MESHTASTIC_MESHTASTIC_LOCALONLY_PB_H_MAX_SIZE meshtastic_LocalConfig_size
-#define meshtastic_LocalConfig_size              745
+#define meshtastic_LocalConfig_size              747
 #define meshtastic_LocalModuleConfig_size        669
 
 #ifdef __cplusplus

src/mesh/generated/meshtastic/mesh.pb.h

@@ -258,6 +258,12 @@ typedef enum _meshtastic_HardwareModel {
     meshtastic_HardwareModel_SEEED_WIO_TRACKER_L1_EINK = 100,
     /* Reserved ID for future and past use */
     meshtastic_HardwareModel_QWANTZ_TINY_ARMS = 101,
+    /* *
+ Lilygo T-Deck Pro */
+    meshtastic_HardwareModel_T_DECK_PRO = 102,
+    /* *
+ Lilygo TLora Pager */
+    meshtastic_HardwareModel_T_LORA_PAGER = 103,
     /* ------------------------------------------------------------------------------------------------------------------------------------------
  Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.
  ------------------------------------------------------------------------------------------------------------------------------------------ */

src/nimble/NimbleBluetooth.cpp

@@ -13,6 +13,7 @@
 NimBLECharacteristic *fromNumCharacteristic;
 NimBLECharacteristic *BatteryCharacteristic;
 NimBLECharacteristic *logRadioCharacteristic;
+NimBLECharacteristic *gpwplCharacteristic;
 NimBLEServer *bleServer;
 
 static bool passkeyShowing;
@@ -265,6 +266,11 @@ void NimbleBluetooth::setupService()
     batteryLevelDescriptor->setUnit(0x27ad);
 
     batteryService->start();
+
+    // Setup the gpwpl service
+    NimBLEService *gpwplService = bleServer->createService(GPWPL_SERVICE_UUID);
+    gpwplCharacteristic = gpwplService->createCharacteristic(GPWPL_UUID, NIMBLE_PROPERTY::NOTIFY);
+    gpwplService->start();
 }
 
 void NimbleBluetooth::startAdvertising()
@@ -273,6 +279,7 @@ void NimbleBluetooth::startAdvertising()
     pAdvertising->reset();
     pAdvertising->addServiceUUID(MESH_SERVICE_UUID);
     pAdvertising->addServiceUUID(NimBLEUUID((uint16_t)0x180f)); // 0x180F is the Battery Service
+    pAdvertising->addServiceUUID(GPWPL_SERVICE_UUID);
     pAdvertising->start(0);
 }
 
@@ -299,6 +306,65 @@ void NimbleBluetooth::sendLog(const uint8_t *logMessage, size_t length)
     logRadioCharacteristic->notify(logMessage, length, true);
 }
 
+// Convert the decimal format of latitude and longitude to NMEA format (degrees and minutes)
+void convertToNMEAFormat(double value, char* buffer, int bufferSize, int isLatitude) {
+    int degrees = (int)value;
+    double minutes = (value - degrees) * 60.0;
+    
+    if (isLatitude) {
+        snprintf(buffer, bufferSize, "%02d%07.4f", degrees, minutes);
+    } else {
+        snprintf(buffer, bufferSize, "%03d%07.4f", degrees, minutes);
+    }
+}
+
+void NimbleBluetooth::Send_GPWPL(uint32_t node, char* name, int32_t latitude_i, int32_t longitude_i)
+{
+    double f_latitude = (double)latitude_i * (double)0.0000001;
+    double f_longitude = (double)longitude_i * (double)0.0000001;
+    char str_latitude_head[20] = {0};
+    char str_longitude_head[20] = {0};
+    convertToNMEAFormat(fabs(f_latitude), str_latitude_head, sizeof(str_latitude_head), 1);
+    convertToNMEAFormat(fabs(f_longitude), str_longitude_head, sizeof(str_longitude_head), 0);
+
+    char str_latitude_symbol[2] = {0};
+    char str_longitude_symbol[2] = {0};
+    str_latitude_symbol[0] = (f_latitude >= 0) ? 'N' : 'S';
+    str_longitude_symbol[0] = (f_longitude >= 0) ? 'E' : 'W';
+
+    char strGPWPL[100] = {0};
+    snprintf(strGPWPL, sizeof(strGPWPL), "$GPWPL,%s,%s,%s,%s,%s", 
+        str_latitude_head, str_latitude_symbol,
+        str_longitude_head, str_longitude_symbol,
+        name);
+
+    // Calculate the check value
+    uint8_t checksum = 0;
+    for (int i = 1; i < strlen(strGPWPL); i++)
+    {
+        checksum ^= (uint8_t)strGPWPL[i];
+    }
+    snprintf(strGPWPL + strlen(strGPWPL), sizeof(strGPWPL) - strlen(strGPWPL), "*%02X\r\n\r\n", (uint8_t)checksum);
+
+    // Split the long string and send it.
+    int nOffset = 0;
+    int nHaveLen = strlen(strGPWPL);
+    while (true)
+    {
+        int nSendLen = min(20, nHaveLen);
+        gpwplCharacteristic->setValue(((uint8_t*)strGPWPL) + nOffset, nSendLen);
+        gpwplCharacteristic->notify();
+        delay(50); // To ensure stable transmission, add a little delay.
+
+        nOffset += nSendLen;
+        nHaveLen -= nSendLen;
+        if (nHaveLen <= 0)
+        {
+            break;
+        }
+    }
+}
+
 void clearNVS()
 {
     NimBLEDevice::deleteAllBonds();

src/nimble/NimbleBluetooth.h

@@ -12,6 +12,7 @@ class NimbleBluetooth : BluetoothApi
     bool isConnected();
     int getRssi();
     void sendLog(const uint8_t *logMessage, size_t length);
+    void Send_GPWPL(uint32_t node, char* name,int32_t latitude_i,int32_t longitude_i);
 
   private:
     void setupService();

variants/diy/hydra/variant.h

@@ -9,6 +9,8 @@
 #define GPS_POWER_TOGGLE // Moved definition from platformio.ini to here
 
 #define BUTTON_PIN 39  // The middle button GPIO on the T-Beam
+// Note: On the ESP32 base version, gpio34-39 are input-only, and do not have internal pull-ups.
+// If 39 is not being used for a button, it is suggested to remove the #define.
 #define BATTERY_PIN 35 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
 #define ADC_CHANNEL ADC1_GPIO35_CHANNEL
 #define ADC_MULTIPLIER 1.85 // (R1 = 470k, R2 = 680k)