写一段蓝牙ble扫描的c语言程序
时间: 2023-06-14 13:05:30 浏览: 312
以下是一个蓝牙BLE扫描的C语言程序示例:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
int main(int argc, char **argv)
{
inquiry_info *devices = NULL;
int max_devices = 255;
int num_devices = 0;
long int flags = IREQ_CACHE_FLUSH;
int duration = 8; // 扫描持续时间,单位为1.28秒
// 打开蓝牙适配器
int adapter_id = hci_get_route(NULL);
int socket_id = hci_open_dev(adapter_id);
if (socket_id < 0)
{
perror("Could not open socket");
exit(1);
}
// 开始扫描蓝牙设备
devices = (inquiry_info*)malloc(max_devices * sizeof(inquiry_info));
num_devices = hci_inquiry(adapter_id, duration, max_devices, NULL, &devices, flags);
if (num_devices < 0)
{
perror("Could not scan devices");
exit(1);
}
// 输出扫描到的设备信息
printf("Scanned %d devices:\n", num_devices);
for (int i = 0; i < num_devices; i++)
{
char address[19] = {0};
ba2str(&(devices[i].bdaddr), address);
printf("Device %d: %s\n", i+1, address);
}
// 关闭蓝牙适配器
free(devices);
close(socket_id);
return 0;
}
```
这个程序使用了BlueZ库来执行蓝牙扫描操作,并且可以在Linux系统上编译和运行。需要注意的是,运行此程序需要以管理员权限执行。
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