Merge pull request #407 from iabdalkader/add_zephyr_support

Add Zephyr support.

Author: facchinm

library.properties

@@ -6,5 +6,5 @@ sentence=Enables Bluetooth® Low Energy connectivity on the Arduino MKR WiFi 101
 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,silabs
+architectures=*
 includes=ArduinoBLE.h

src/local/BLELocalDevice.cpp

@@ -25,6 +25,14 @@
 
 #include "BLELocalDevice.h"
 
+#ifdef __ZEPHYR__
+#undef ARDUINO_PORTENTA_H7_M7
+#undef ARDUINO_OPTA
+#undef ARDUINO_GIGA
+#undef ARDUINO_NICLA_VISION
+#undef ARDUINO_PORTENTA_C33
+#endif
+
 #if defined(PORTENTA_H7_PINS) || defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_OPTA)
 #ifndef BT_REG_ON
 #define BT_REG_ON PJ_12

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_SILABS) && !defined(ARDUINO_UNOR4_WIFI) || defined(TARGET_NANO_RP2040_CONNECT) //|| defined(CORE_CM4)
+#if !defined(ARDUINO_ARCH_MBED) && !defined(__ZEPHYR__) && !defined(ESP32) && !defined(ARDUINO_SILABS) && !defined(ARDUINO_UNOR4_WIFI) && !defined(__ZEPHYR__) || defined(TARGET_NANO_RP2040_CONNECT) //|| defined(CORE_CM4)
 
 #include "HCIUartTransport.h"
 

src/utility/HCIVirtualTransportZephyr.cpp

@@ -0,0 +1,230 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2018-2025 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(__ZEPHYR__)
+
+#include "HCIVirtualTransportZephyr.h"
+#include "HCI.h"
+
+#include <zephyr/bluetooth/buf.h>
+#include <zephyr/bluetooth/hci.h>
+#include <zephyr/bluetooth/hci_raw.h>
+#include <zephyr/bluetooth/controller.h>
+#include <zephyr/drivers/uart.h>
+#include <zephyr/drivers/hwinfo.h>
+
+static K_FIFO_DEFINE(rx_queue);
+struct k_fifo* __rx_queue = &rx_queue;
+extern "C" int bt_h4_vnd_setup(const struct device *dev);
+
+#if CONFIG_CYW4343W_MURATA_1DX
+// External firmware defines.
+extern const uint8_t brcm_patchram_buf[];
+extern const int brcm_patch_ram_length;
+
+enum {
+  HCI_VND_OP_FW_DOWNLOAD  = 0xFC2E,
+  HCI_VND_OP_WRITE_RAM    = 0xFC4C,
+  HCI_VND_OP_LAUNCH_RAM   = 0xFC4E,
+  HCI_VND_OP_SET_BAUDRATE = 0xFC18,
+};
+
+static int cyw4343_set_baudrate(const struct device *uart, uint32_t baudrate) {
+    struct __attribute__ ((packed)) {
+      uint16_t zero;
+      uint32_t baud;
+    } param = { 0, baudrate };
+
+	struct uart_config uart_cfg;
+	if (uart_config_get(uart, &uart_cfg)) {
+		return -1;
+	}
+
+    if (HCI.sendCommand(HCI_VND_OP_SET_BAUDRATE, sizeof(param), (void *) &param)) {
+      return -1;
+    }
+
+    uart_cfg.baudrate = baudrate;
+    if (uart_configure(uart, &uart_cfg)) {
+        return -1;
+    }
+
+    uart_irq_rx_enable(uart);
+    return 0;
+}
+
+static int cyw4343_download_firmware(const struct device *uart) {
+  #define MURATA_NODE DT_CHILD(DT_CHOSEN(zephyr_bt_hci), murata_1dx)
+  uint32_t operational_speed = DT_PROP_OR(MURATA_NODE, hci_operation_speed, 115200);
+  uint32_t fw_download_speed = DT_PROP_OR(MURATA_NODE, fw_download_speed, 115200);
+
+  // Reset controller
+  if (HCI.sendCommand(0x0C03, 0, NULL)) {
+    return -1;
+  }
+
+  // Switch to fast baudrate
+  if ((operational_speed != fw_download_speed) && 
+      cyw4343_set_baudrate(uart, fw_download_speed)) {
+      return -1;
+  }
+
+  // Start firmware downloader.
+  if (HCI.sendCommand(HCI_VND_OP_FW_DOWNLOAD, 0, NULL)) {
+    return -1;
+  }
+
+  // Load the firmware image.
+  for (size_t offset=0; offset < brcm_patch_ram_length;) {
+    uint8_t  length = brcm_patchram_buf[offset + 2];
+    uint16_t opcode = (brcm_patchram_buf[offset + 0]) |
+                      (brcm_patchram_buf[offset + 1] << 8);
+
+    // Opcode should be write RAM or launch RAM.
+    if (opcode != HCI_VND_OP_WRITE_RAM && opcode != HCI_VND_OP_LAUNCH_RAM) {
+      return -1;
+    }
+
+    if (HCI.sendCommand(opcode, length, (void *) &brcm_patchram_buf[offset + 3])) {
+      return -1;
+    }
+
+    offset += length + 3;
+  }
+
+  // Delay after firmware loading.
+  delay(250);
+
+  // Switch back to the default baudrate.
+  if ((operational_speed != fw_download_speed) && 
+      cyw4343_set_baudrate(uart, operational_speed)) {
+      return -1;
+  }
+
+  return 0;
+}
+#endif
+
+HCIVirtualTransportZephyrClass::HCIVirtualTransportZephyrClass() {
+
+}
+
+HCIVirtualTransportZephyrClass::~HCIVirtualTransportZephyrClass() {
+
+}
+
+int HCIVirtualTransportZephyrClass::begin() {
+  bt_enable_raw(__rx_queue);
+
+#if CONFIG_BT_HCI_SETUP
+  const struct device *uart = DEVICE_DT_GET(DT_PARENT(DT_CHOSEN(zephyr_bt_hci)));
+  if (!uart) {
+    return 0;
+  }
+
+  if (bt_h4_vnd_setup(uart)) {
+    return 0;
+  }
+
+#if CONFIG_CYW4343W_MURATA_1DX
+  if (cyw4343_download_firmware(uart)) {
+    return 0;
+  }
+#endif /* CONFIG_CYW4343W_MURATA_1DX */
+#endif /* CONFIG_BT_HCI_SETUP */
+
+#if CONFIG_BT_LL_SW_SPLIT
+  // Use unique device id for BD addr.
+  uint8_t bd_addr[6] = { 0xFA, 0xFA, 0xFA, 0xFA, 0xFA, 0xFA };
+
+#if CONFIG_HWINFO
+  hwinfo_get_device_id(bd_addr, sizeof(bd_addr));
+#endif  /* CONFIG_HWINFO */
+
+  // Set public address for controller.
+  bt_ctlr_set_public_addr(bd_addr);
+#endif  /* CONFIG_BT_LL_SW_SPLIT */
+
+  rxbuf.clear();
+
+  return 1;
+}
+
+void HCIVirtualTransportZephyrClass::end() {
+
+}
+
+void HCIVirtualTransportZephyrClass::wait(unsigned long timeout) {
+  delay(timeout);
+}
+
+int HCIVirtualTransportZephyrClass::available() {
+  static struct net_buf *buf = NULL;
+
+  if (rxbuf.available()) {
+    return rxbuf.available();
+  }
+
+  buf = (struct net_buf *) k_fifo_get(__rx_queue, K_MSEC(10));
+  if (!buf) {
+    return 0;
+  }
+
+  for (int i=0; i<buf->len; i++) {
+    rxbuf.store_char((uint8_t)buf->data[i]);
+  }
+
+  net_buf_pull(buf, buf->len);
+  if (!buf->len) {
+    net_buf_unref(buf);
+    buf = NULL;
+  }
+
+  return rxbuf.available();
+}
+
+int HCIVirtualTransportZephyrClass::peek() {
+  return -1;
+}
+
+int HCIVirtualTransportZephyrClass::read() {
+  if (rxbuf.available()) {
+    return rxbuf.read_char();
+  }
+
+  return -1;
+}
+
+size_t HCIVirtualTransportZephyrClass::write(const uint8_t* data, size_t length) {
+  enum bt_buf_type type = bt_buf_type_from_h4(data[0], BT_BUF_OUT);
+  struct net_buf *buf = bt_buf_get_tx(type, K_FOREVER, &data[1], length - 1);
+
+  if (buf) {
+    auto err = bt_send(buf);
+    if (err) {
+    	net_buf_unref(buf);
+    }
+    return length;
+  }
+  return 0;
+}
+
+HCIVirtualTransportZephyrClass HCIVirtualTransportZephyr;
+HCITransportInterface& HCITransport = HCIVirtualTransportZephyr;
+#endif

src/utility/HCIVirtualTransportZephyr.h

@@ -0,0 +1,44 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2018-2025 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
+*/
+
+#include "HCITransport.h"
+#include "api/RingBuffer.h"
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+class HCIVirtualTransportZephyrClass : public HCITransportInterface {
+  public:
+    HCIVirtualTransportZephyrClass();
+    virtual ~HCIVirtualTransportZephyrClass();
+  
+    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);
+  
+  private:
+    RingBufferN<258> rxbuf;
+};