diff --git a/.github/workflows/compile-examples.yml b/.github/workflows/compile-examples.yml
index 81e843dd..706ccb4c 100644
--- a/.github/workflows/compile-examples.yml
+++ b/.github/workflows/compile-examples.yml
@@ -1,29 +1,86 @@
 name: Compile Examples
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
 on:
-  - push
-  - pull_request
+  push:
+    paths:
+      - ".github/workflows/compile-examples.yml"
+      - "examples/**"
+      - "src/**"
+  pull_request:
+    paths:
+      - ".github/workflows/compile-examples.yml"
+      - "examples/**"
+      - "src/**"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to external resources (libraries, platforms).
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
 
 jobs:
   build:
+    name: ${{ matrix.board.fqbn }}
     runs-on: ubuntu-latest
 
+    env:
+      SKETCHES_REPORTS_PATH: sketches-reports
+
     strategy:
+      fail-fast: false
+
       matrix:
-        fqbn:
-          - arduino:samd:mkrwifi1010
-          - arduino:samd:nano_33_iot
-          - arduino:megaavr:uno2018:mode=on
-          - arduino:mbed:nano33ble
-          - arduino:mbed_nano:nanorp2040connect
-          - arduino:renesas_uno:unor4wifi
+        board:
+          - fqbn: arduino:samd:mkrwifi1010
+            platforms: |
+              - name: arduino:samd
+            artifact-name-suffix: arduino-samd-mkrwifi1010
+          - fqbn: arduino:samd:nano_33_iot
+            platforms: |
+              - name: arduino:samd
+            artifact-name-suffix: arduino-samd-nano_33_iot
+          - fqbn: arduino:megaavr:uno2018:mode=on
+            platforms: |
+              - name: arduino:megaavr
+            artifact-name-suffix: arduino-megaavr-uno2018
+          - fqbn: arduino:mbed_nano:nano33ble
+            platforms: |
+              - name: arduino:mbed_nano
+            artifact-name-suffix: arduino-mbed_nano-nano33ble
+          - fqbn: arduino:mbed_nano:nanorp2040connect
+            platforms: |
+              - name: arduino:mbed_nano
+            artifact-name-suffix: arduino-mbed_nano-nanorp2040connect
+          - fqbn: arduino:renesas_uno:unor4wifi
+            platforms: |
+              - name: arduino:renesas_uno
+            artifact-name-suffix: arduino-renesas_uno-unor4wifi
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: arduino/compile-sketches@v1
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compile examples
+        uses: arduino/compile-sketches@v1
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          fqbn: ${{ matrix.fqbn }}
-          
+          fqbn: ${{ matrix.board.fqbn }}
+          platforms: ${{ matrix.board.platforms }}
+          libraries: |
+            # Install the library from the local path.
+            - source-path: ./
+          sketch-paths: |
+            - examples
+          enable-deltas-report: true
+          sketches-report-path: ${{ env.SKETCHES_REPORTS_PATH }}
+
+      - name: Save sketches report as workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          if-no-files-found: error
+          path: ${{ env.SKETCHES_REPORTS_PATH }}
+          name: sketches-report-${{ matrix.board.artifact-name-suffix }}
+
   build-for-esp32:
     runs-on: ubuntu-latest
     
@@ -39,7 +96,7 @@ jobs:
           #- esp32:esp32:esp32h2
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: arduino/compile-sketches@v1
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/report-size-deltas.yml b/.github/workflows/report-size-deltas.yml
new file mode 100644
index 00000000..39e2a0ad
--- /dev/null
+++ b/.github/workflows/report-size-deltas.yml
@@ -0,0 +1,24 @@
+name: Report Size Deltas
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/report-size-deltas.yml"
+  schedule:
+    # Run at the minimum interval allowed by GitHub Actions.
+    # Note: GitHub Actions periodically has outages which result in workflow failures.
+    # In this event, the workflows will start passing again once the service recovers.
+    - cron: "*/5 * * * *"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  report:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Comment size deltas reports to PRs
+        uses: arduino/report-size-deltas@v1
+        with:
+          # Regex matching the names of the workflow artifacts created by the "Compile Examples" workflow
+          sketches-reports-source: ^sketches-report-.+
diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index 0cbdde58..94b57020 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Spell check
         uses: arduino/actions/libraries/spell-check@master
diff --git a/.github/workflows/sync-labels.yml b/.github/workflows/sync-labels.yml
index 94938f35..53a9f54f 100644
--- a/.github/workflows/sync-labels.yml
+++ b/.github/workflows/sync-labels.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Download JSON schema for labels configuration file
         id: download-schema
@@ -70,7 +70,7 @@ jobs:
           file-url: https://raw.githubusercontent.com/arduino/tooling-project-assets/main/workflow-templates/assets/sync-labels/${{ matrix.filename }}
 
       - name: Pass configuration files to next job via workflow artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           path: |
             *.yaml
@@ -105,16 +105,16 @@ jobs:
           echo "::set-output name=flag::--dry-run"
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Download configuration files artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ${{ env.CONFIGURATIONS_ARTIFACT }}
           path: ${{ env.CONFIGURATIONS_FOLDER }}
 
       - name: Remove unneeded artifact
-        uses: geekyeggo/delete-artifact@v2
+        uses: geekyeggo/delete-artifact@v5
         with:
           name: ${{ env.CONFIGURATIONS_ARTIFACT }}
 
diff --git a/library.properties b/library.properties
index 5f238fde..543998b7 100644
--- a/library.properties
+++ b/library.properties
@@ -1,10 +1,10 @@
 name=ArduinoBLE
-version=1.3.6
+version=1.3.7
 author=Arduino
 maintainer=Arduino <info@arduino.cc>
 sentence=Enables Bluetooth® Low Energy connectivity on the Arduino MKR WiFi 1010, Arduino UNO WiFi Rev.2, Arduino Nano 33 IoT, Arduino Nano 33 BLE, Nicla Sense ME and UNO R4 WiFi.
 paragraph=This library supports creating a Bluetooth® Low Energy peripheral & central mode.
 category=Communication
 url=https://www.arduino.cc/en/Reference/ArduinoBLE
-architectures=samd,megaavr,mbed,apollo3,mbed_nano,mbed_portenta,mbed_nicla,esp32,mbed_giga,renesas,renesas_portenta,mbed_opta,renesas_uno
+architectures=samd,megaavr,mbed,apollo3,mbed_nano,mbed_portenta,mbed_nicla,esp32,mbed_giga,renesas,renesas_portenta,mbed_opta,renesas_uno,silabs
 includes=ArduinoBLE.h
diff --git a/src/BLECharacteristic.cpp b/src/BLECharacteristic.cpp
index cb9783ce..bfaee3ff 100644
--- a/src/BLECharacteristic.cpp
+++ b/src/BLECharacteristic.cpp
@@ -24,6 +24,8 @@
 
 #include "BLECharacteristic.h"
 
+extern "C" int strcasecmp(char const *a, char const *b);
+
 BLECharacteristic::BLECharacteristic() :
   BLECharacteristic((BLELocalCharacteristic*)NULL)
 {
diff --git a/src/BLEDevice.cpp b/src/BLEDevice.cpp
index 5f64c1d6..e9ca9b99 100644
--- a/src/BLEDevice.cpp
+++ b/src/BLEDevice.cpp
@@ -25,6 +25,8 @@
 
 #include "BLEDevice.h"
 
+extern "C" int strcasecmp(char const *a, char const *b);
+
 BLEDevice::BLEDevice() :
   _advertisementTypeMask(0),
   _eirDataLength(0),
diff --git a/src/BLEService.cpp b/src/BLEService.cpp
index ed54f9ff..88687b61 100644
--- a/src/BLEService.cpp
+++ b/src/BLEService.cpp
@@ -22,6 +22,8 @@
 
 #include "BLEService.h"
 
+extern "C" int strcasecmp(char const *a, char const *b);
+
 BLEService::BLEService() :
   BLEService((BLELocalService*)NULL)
 {
diff --git a/src/local/BLELocalDevice.cpp b/src/local/BLELocalDevice.cpp
index 146d99b9..1d1036be 100644
--- a/src/local/BLELocalDevice.cpp
+++ b/src/local/BLELocalDevice.cpp
@@ -25,7 +25,7 @@
 
 #include "BLELocalDevice.h"
 
-#if defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_OPTA)
+#if defined(PORTENTA_H7_PINS) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_OPTA)
 #ifndef BT_REG_ON
 #define BT_REG_ON PJ_12
 #endif
@@ -69,10 +69,13 @@ int BLELocalDevice::begin()
   delay(100);
   digitalWrite(NINA_RESETN, HIGH);
   delay(750);
-#elif defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
+#elif defined(PORTENTA_H7_PINS) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
   // BT_REG_ON -> HIGH
   pinMode(BT_REG_ON, OUTPUT);
+  digitalWrite(BT_REG_ON, LOW);
+  delay(500);
   digitalWrite(BT_REG_ON, HIGH);
+  delay(500);
 #elif defined(ARDUINO_PORTENTA_C33)
 #define NINA_GPIO0      (100)
 #define NINA_RESETN     (101)
diff --git a/src/utility/ATT.cpp b/src/utility/ATT.cpp
index acdf5a9f..b1796c90 100644
--- a/src/utility/ATT.cpp
+++ b/src/utility/ATT.cpp
@@ -34,6 +34,8 @@
 
 #include "ATT.h"
 
+extern "C" int strcasecmp(char const *a, char const *b);
+
 #define ATT_OP_ERROR              0x01
 #define ATT_OP_MTU_REQ            0x02
 #define ATT_OP_MTU_RESP           0x03
diff --git a/src/utility/CordioHCICustomDriver.h b/src/utility/CordioHCICustomDriver.h
new file mode 100644
index 00000000..fc062ee8
--- /dev/null
+++ b/src/utility/CordioHCICustomDriver.h
@@ -0,0 +1,17 @@
+#if defined(CORE_CM4)
+
+#include "CyH4TransportDriver.h"
+
+ble::vendor::cypress_ble::CyH4TransportDriver& ble_cordio_get_h4_transport_driver()
+{
+    static  ble::vendor::cypress_ble::CyH4TransportDriver s_transport_driver(
+        /* TX */ CYBSP_BT_UART_TX, /* RX */ CYBSP_BT_UART_RX,
+        /* cts */ CYBSP_BT_UART_CTS, /* rts */ CYBSP_BT_UART_RTS, NC, DEF_BT_BAUD_RATE,
+        CYBSP_BT_HOST_WAKE, CYBSP_BT_DEVICE_WAKE
+    );
+    return s_transport_driver;
+}
+
+#define CUSTOM_HCI_DRIVER
+
+#endif
\ No newline at end of file
diff --git a/src/utility/HCICordioTransport.cpp b/src/utility/HCICordioTransport.cpp
index 947378cf..7848712f 100644
--- a/src/utility/HCICordioTransport.cpp
+++ b/src/utility/HCICordioTransport.cpp
@@ -17,8 +17,7 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#if defined(ARDUINO_ARCH_MBED) && !defined(TARGET_NANO_RP2040_CONNECT)
-
+#if defined(ARDUINO_ARCH_MBED) && !defined(TARGET_NANO_RP2040_CONNECT) // && !defined(CORE_CM4)
 #include <Arduino.h>
 #include <mbed.h>
 
@@ -53,6 +52,8 @@
 #define BLE_NAMESPACE ble::vendor::cordio
 #endif
 
+#include "CordioHCICustomDriver.h"
+
 extern BLE_NAMESPACE::CordioHCIDriver& ble_cordio_get_hci_driver();
 
 namespace BLE_NAMESPACE {
@@ -181,7 +182,7 @@ HCICordioTransportClass::~HCICordioTransportClass()
 {
 }
 
-#if defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
+#if (defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)) && !defined(CUSTOM_HCI_DRIVER)
 events::EventQueue eventQueue(10 * EVENTS_EVENT_SIZE);
 void scheduleMbedBleEvents(BLE::OnEventsToProcessCallbackContext *context) {
   eventQueue.call(mbed::Callback<void()>(&context->ble, &BLE::processEvents));
@@ -201,7 +202,8 @@ int HCICordioTransportClass::begin()
   init_wsf(bufPoolDesc);
 #endif
 
-#if defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
+#if (defined(ARDUINO_PORTENTA_H7_M4) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)) && !defined(CUSTOM_HCI_DRIVER)
+
   BLE &ble = BLE::Instance();
   ble.onEventsToProcess(scheduleMbedBleEvents);
 
diff --git a/src/utility/HCISilabsTransport.cpp b/src/utility/HCISilabsTransport.cpp
new file mode 100644
index 00000000..135fd020
--- /dev/null
+++ b/src/utility/HCISilabsTransport.cpp
@@ -0,0 +1,130 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2024 Arduino SA. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if defined(ARDUINO_SILABS)
+
+#include "HCISilabsTransport.h"
+#include "sl_string.h"
+
+extern "C" {
+#include "sl_btctrl_linklayer.h"
+#include "sl_hci_common_transport.h"
+}
+
+extern "C" int strcasecmp(char const *a, char const *b) {
+  return sl_strcasecmp(a, b);
+}
+
+static RingBufferN<512> buf;
+
+HCISilabsTransportClass::HCISilabsTransportClass()
+{
+}
+
+HCISilabsTransportClass::~HCISilabsTransportClass()
+{
+}
+
+int HCISilabsTransportClass::begin()
+{
+  if(!sl_btctrl_is_initialized()) {
+    sl_bt_controller_init(); 
+  }
+
+  /* Initialize adv & scan components */
+  sl_btctrl_init_adv();
+  sl_btctrl_init_scan();
+  sl_btctrl_init_conn(); 
+  sl_btctrl_init_adv_ext();
+  sl_btctrl_init_scan_ext();
+
+  /* Initialize HCI controller */
+  sl_bthci_init_upper(); 
+  sl_btctrl_hci_parser_init_default();
+  sl_btctrl_hci_parser_init_conn();
+  sl_btctrl_hci_parser_init_adv();
+  sl_btctrl_hci_parser_init_phy();
+
+  return 1;
+}
+
+void HCISilabsTransportClass::end()
+{
+  sl_bt_controller_deinit();
+}
+
+void HCISilabsTransportClass::wait(unsigned long timeout)
+{
+  for (unsigned long start = millis(); (millis() - start) < timeout;) {
+    if (available()) {
+      break;
+    }
+  }
+}
+
+int HCISilabsTransportClass::available()
+{
+  return buf.available();
+}
+
+int HCISilabsTransportClass::peek()
+{
+  return buf.peek();
+}
+
+int HCISilabsTransportClass::read()
+{
+  return buf.read_char();
+}
+
+size_t HCISilabsTransportClass::write(const uint8_t* data, size_t len)
+{
+  int ret = 0;
+  ret = hci_common_transport_receive((uint8_t *)data, len, true);
+
+  if (ret == 0) return len;
+
+  return 0;
+}
+
+extern "C" {
+  /**
+   * @brief Transmit HCI message using the currently used transport layer.
+   * The HCI calls this function to transmit a full HCI message.
+   * @param[in] data Packet type followed by HCI packet data.
+   * @param[in] len Length of the `data` parameter
+   * @return 0 - on success, or non-zero on failure.
+   */
+  uint32_t hci_common_transport_transmit(uint8_t *data, int16_t len)
+  {
+    for (int i = 0; i < len; i++) {
+      buf.store_char(data[i]);
+      if (buf.isFull()) return SL_STATUS_FAIL;
+    }
+    
+    sl_btctrl_hci_transmit_complete(0);
+    return 0;
+  }
+}
+
+HCISilabsTransportClass HCISilabsTransport;
+
+HCITransportInterface& HCITransport = HCISilabsTransport;
+
+#endif
diff --git a/src/utility/HCISilabsTransport.h b/src/utility/HCISilabsTransport.h
new file mode 100644
index 00000000..2061e782
--- /dev/null
+++ b/src/utility/HCISilabsTransport.h
@@ -0,0 +1,42 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2018 Arduino SA. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _HCI_SILABS_TRANSPORT_H_
+#define _HCI_SILABS_TRANSPORT_H_
+
+#include "HCITransport.h"
+
+class HCISilabsTransportClass : public HCITransportInterface {
+public:
+  HCISilabsTransportClass();
+  virtual ~HCISilabsTransportClass();
+
+  virtual int begin();
+  virtual void end();
+
+  virtual void wait(unsigned long timeout);
+
+  virtual int available();
+  virtual int peek();
+  virtual int read();
+
+  virtual size_t write(const uint8_t* data, size_t length);
+};
+
+#endif
\ No newline at end of file
diff --git a/src/utility/HCIUartTransport.cpp b/src/utility/HCIUartTransport.cpp
index d3c44d8f..191811a7 100644
--- a/src/utility/HCIUartTransport.cpp
+++ b/src/utility/HCIUartTransport.cpp
@@ -17,7 +17,7 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#if !defined(ARDUINO_ARCH_MBED) && !defined(ESP32) && !defined(ARDUINO_UNOR4_WIFI) || defined(TARGET_NANO_RP2040_CONNECT)
+#if !defined(ARDUINO_ARCH_MBED) && !defined(ESP32) && !defined(ARDUINO_SILABS) && !defined(ARDUINO_UNOR4_WIFI) || defined(TARGET_NANO_RP2040_CONNECT) //|| defined(CORE_CM4)
 
 #include "HCIUartTransport.h"
 
@@ -33,6 +33,8 @@
 #define SerialHCI Serial3
 #elif defined(ARDUINO_PORTENTA_C33)
 #define SerialHCI Serial5
+#elif defined(ARDUINO_GIGA)
+arduino::UART SerialHCI(CYBSP_BT_UART_TX, CYBSP_BT_UART_RX, CYBSP_BT_UART_RTS, CYBSP_BT_UART_CTS);
 #else
 #error "Unsupported board selected!"
 #endif