我在编译旨在通过蓝牙发送和接收字符串的程序时遇到问题。从文档中，我知道 btstack_run_loop_embedded_get_instance() 存在，但我收到错误：“btstack_run_loop_embedded_get_instance”未在此范围内声明。
我一直在阅读文档并要求 chatgpt 帮助我理解它，据我所知，蓝牙是基于 GATT 等协议构建的，但特别是 SPP，这是我关心的，因为它本质上是蓝牙上的串行端口？尝试编译时出现了有关缺少 btstack_config.h 的错误，该错误是故意丢失的，因为作为开发人员，我应该根据自己的需要对其进行配置。我从 pico w 示例中删除了 btstack_config.h，但它给了我错误：“btstack_run_loop_embedded_get_instance”未在此范围内声明。
看来我没有正确包含 pico-sdk 中的 btstack。
// main.cpp
#include <iostream>
#include <cstring>
#include "btstack.h" // Include the BTstack header file
#include <btstack_run_loop_embedded.h>
#include <btstack_uart_block.h>
#include <hci_transport_h4.h>
#include "pico/cyw43_arch.h"
#include "pico/btstack_cyw43.h"
#include "btstack_memory.h"
#include "hci.h"
#include "rfcomm.h"
// Callback function for receiving data
void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
int main() {
// Initialize BTstack
btstack_memory_init();
btstack_run_loop_init(btstack_run_loop_embedded_get_instance());
// Set up Bluetooth module
const hci_transport_t *transport = hci_transport_h4_instance(btstack_uart_block_embedded_instance());
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
hci_init((hci_transport_t *)transport, NULL, remote_device_db, NULL);
hci_set_class_of_device(0x000508); // Set device class to 'Uncategorized'
// Initialize L2CAP
l2cap_init();
// Initialize RFCOMM
rfcomm_init();
// Initialize SDP
sdp_init();
// Setup SPP service
rfcomm_register_service(packet_handler, RFCOMM_SERVER_CHANNEL, 0xffff);
// Set local device name
gap_set_local_name("BTstack SPP Server");
// Configure Bluetooth device
hci_power_control(HCI_POWER_ON);
// Run the event loop
btstack_run_loop_execute();
return 0;
}
// Callback function for receiving data
void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) {
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (packet[0]) {
case RFCOMM_EVENT_INCOMING_CONNECTION:
// Accept incoming connection
rfcomm_event_incoming_connection_get_bd_addr(packet, remote_addr);
rfcomm_accept_connection(channel);
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
if (packet[2]) {
std::cerr << "Connection failed" << std::endl;
} else {
std::cout << "Connection established" << std::endl;
// Send a string over Bluetooth
const char *message = "Hello, Bluetooth!";
rfcomm_send_internal(channel, (uint8_t *) message, strlen(message));
}
break;
case RFCOMM_EVENT_CHANNEL_CLOSED:
std::cout << "Connection closed" << std::endl;
break;
case RFCOMM_EVENT_DATA_PACKET:
// Received data
std::cout << "Received: ";
for (int i = 0; i < size; i++) {
std::cout << packet[i];
}
std::cout << std::endl;
break;
default:
break;
}
break;
default:
break;
}
}
//CmakeLists.txt
cmake_minimum_required(VERSION 3.13)
#include(pico_sdk_import.cmake)
include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)
include($ENV{PICO_EXTRAS_PATH}/external/pico_extras_import.cmake)
project(bt_uart_example)
set(PICO_BOARD pico_w)
pico_sdk_init()
add_executable(${PROJECT_NAME}
main.cpp
)
# Add BTstack include directories
include_directories(/home/pi/pico/pico-sdk/lib/btstack/src/classic)
include_directories(/home/pi/pico/pico-sdk/lib/btstack/src)
include_directories(/home/pi/pico/pico-sdk/lib/btstack/platform/embedded)
# Add other include directories if needed
# Add BTstack source files
#set(BTSTACK_SOURCES
# your_project_path/btstack/src/... # List the necessary source files
# your_project_path/btstack/platform/embedded/... # List platform-specific source files
#)
target_include_directories(${PROJECT_NAME} PRIVATE
${CMAKE_CURRENT_LIST_DIR}
)
#target_compile_definitions(CYW43_ENABLE_BLUETOOTH=1)
target_compile_options(${PROJECT_NAME} PRIVATE -std=c++17)
target_link_libraries(${PROJECT_NAME} PRIVATE
pico_stdlib
pico_btstack_ble # Needed for ble
pico_btstack_cyw43 # Needed for ble
pico_cyw43_arch_none # Needed for pico_w
#pico_bluetooth
hardware_adc
)
pico_enable_stdio_usb(${PROJECT_NAME} 1)
pico_enable_stdio_uart(${PROJECT_NAME} 0)
pico_add_extra_outputs(${PROJECT_NAME})
// btstack_config.h
#ifndef _PICO_BTSTACK_BTSTACK_CONFIG_H
#define _PICO_BTSTACK_BTSTACK_CONFIG_H
#ifndef ENABLE_BLE
#error Please link to pico_btstack_ble
#endif
// BTstack features that can be enabled
#define ENABLE_LE_PERIPHERAL
#define ENABLE_LOG_INFO
#define ENABLE_LOG_ERROR
#define ENABLE_PRINTF_HEXDUMP
// for the client
#if RUNNING_AS_CLIENT
#define ENABLE_LE_CENTRAL
#define MAX_NR_GATT_CLIENTS 1
#else
#define MAX_NR_GATT_CLIENTS 0
#endif
// BTstack configuration. buffers, sizes, ...
#define HCI_OUTGOING_PRE_BUFFER_SIZE 4
#define HCI_ACL_PAYLOAD_SIZE (255 + 4)
#define HCI_ACL_CHUNK_SIZE_ALIGNMENT 4
#define MAX_NR_HCI_CONNECTIONS 1
#define MAX_NR_SM_LOOKUP_ENTRIES 3
#define MAX_NR_WHITELIST_ENTRIES 16
#define MAX_NR_LE_DEVICE_DB_ENTRIES 16
// Limit number of ACL/SCO Buffer to use by stack to avoid cyw43 shared bus overrun
#define MAX_NR_CONTROLLER_ACL_BUFFERS 3
#define MAX_NR_CONTROLLER_SCO_PACKETS 3
// Enable and configure HCI Controller to Host Flow Control to avoid cyw43 shared bus overrun
#define ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
#define HCI_HOST_ACL_PACKET_LEN (255+4)
#define HCI_HOST_ACL_PACKET_NUM 3
#define HCI_HOST_SCO_PACKET_LEN 120
#define HCI_HOST_SCO_PACKET_NUM 3
// Link Key DB and LE Device DB using TLV on top of Flash Sector interface
#define NVM_NUM_DEVICE_DB_ENTRIES 16
#define NVM_NUM_LINK_KEYS 16
// We don't give btstack a malloc, so use a fixed-size ATT DB.
#define MAX_ATT_DB_SIZE 512
// BTstack HAL configuration
#define HAVE_EMBEDDED_TIME_MS
#define HAVE_EMBEDDED_TICK
#define HAVE_EMBEDDED_TICK_ELAPSED
#define HAVE_EMBEDDED_SLEEP
// map btstack_assert onto Pico SDK assert()
#define HAVE_ASSERT
// Some USB dongles take longer to respond to HCI reset (e.g. BCM20702A).
#define HCI_RESET_RESEND_TIMEOUT_MS 1000
#define ENABLE_SOFTWARE_AES128
#define ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS
#endif // MICROPY_INCLUDED_EXTMOD_BTSTACK_BTSTACK_CONFIG_H
make output:
/home/pi/pico/phonk/branch5/main.cpp: In function 'int main()':
/home/pi/pico/phonk/branch5/main.cpp:22:5: error: 'remote_device_db_t' was not declared in this scope
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:22:5: note: suggested alternative: 'le_device_db_add'
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~~~
le_device_db_add
/home/pi/pico/phonk/branch5/main.cpp:22:25: error: 'remote_device_db' was not declared in this scope
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:22:25: note: suggested alternative: 'rfcomm_service_t'
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~
rfcomm_service_t
/home/pi/pico/phonk/branch5/main.cpp:22:65: error: expected primary-expression before ')' token
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^
/home/pi/pico/phonk/branch5/main.cpp:22:68: error: 'remote_device_db_memory' was not declared in this scope
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:22:68: note: suggested alternative: 'le_device_db_remove'
remote_device_db_t *remote_device_db = (remote_device_db_t *) &remote_device_db_memory;
^~~~~~~~~~~~~~~~~~~~~~~
le_device_db_remove
/home/pi/pico/phonk/branch5/main.cpp:24:5: error: 'hci_set_class_of_device' was not declared in this scope
hci_set_class_of_device(0x000508); // Set device class to 'Uncategorized'
^~~~~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:24:5: note: suggested alternative: 'gap_set_class_of_device'
hci_set_class_of_device(0x000508); // Set device class to 'Uncategorized'
^~~~~~~~~~~~~~~~~~~~~~~
gap_set_class_of_device
/home/pi/pico/phonk/branch5/main.cpp:33:5: error: 'sdp_init' was not declared in this scope
sdp_init();
^~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:33:5: note: suggested alternative: 'sm_init'
sdp_init();
^~~~~~~~
sm_init
/home/pi/pico/phonk/branch5/main.cpp:36:45: error: 'RFCOMM_SERVER_CHANNEL' was not declared in this scope
rfcomm_register_service(packet_handler, RFCOMM_SERVER_CHANNEL, 0xffff);
^~~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:36:45: note: suggested alternative: 'RFCOMM_CREATE_CHANNEL'
rfcomm_register_service(packet_handler, RFCOMM_SERVER_CHANNEL, 0xffff);
^~~~~~~~~~~~~~~~~~~~~
RFCOMM_CREATE_CHANNEL
/home/pi/pico/phonk/branch5/main.cpp: In function 'void packet_handler(uint8_t, uint16_t, uint8_t*, uint16_t)':
/home/pi/pico/phonk/branch5/main.cpp:57:74: error: 'remote_addr' was not declared in this scope
rfcomm_event_incoming_connection_get_bd_addr(packet, remote_addr);
^~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:57:74: note: suggested alternative: '_remove_r'
rfcomm_event_incoming_connection_get_bd_addr(packet, remote_addr);
^~~~~~~~~~~
_remove_r
/home/pi/pico/phonk/branch5/main.cpp:60:22: error: 'RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE' was not declared in this scope
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:60:22: note: suggested alternative: 'RFCOMM_EVENT_CHANNEL_OPENED'
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RFCOMM_EVENT_CHANNEL_OPENED
/home/pi/pico/phonk/branch5/main.cpp:68:25: error: 'rfcomm_send_internal' was not declared in this scope
rfcomm_send_internal(channel, (uint8_t *) message, strlen(message));
^~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:68:25: note: suggested alternative: 'rfcomm_send_prepared'
rfcomm_send_internal(channel, (uint8_t *) message, strlen(message));
^~~~~~~~~~~~~~~~~~~~
rfcomm_send_prepared
/home/pi/pico/phonk/branch5/main.cpp:74:22: error: 'RFCOMM_EVENT_DATA_PACKET' was not declared in this scope
case RFCOMM_EVENT_DATA_PACKET:
^~~~~~~~~~~~~~~~~~~~~~~~
/home/pi/pico/phonk/branch5/main.cpp:74:22: note: suggested alternative: 'RFCOMM_DATA_PACKET'
case RFCOMM_EVENT_DATA_PACKET:
^~~~~~~~~~~~~~~~~~~~~~~~
RFCOMM_DATA_PACKET
make[2]: *** [CMakeFiles/bt_uart_example.dir/build.make:63: CMakeFiles/bt_uart_example.dir/main.cpp.obj] Error 1
make[1]: *** [CMakeFiles/Makefile2:2181: CMakeFiles/bt_uart_example.dir/all] Error 2
make: *** [Makefile:84: all] Error 2
你可以发送工作代码的最终版本吗？