linux用c语言编程蓝牙
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linux Bluetooth programming in c
提问by Himanshu Pradhan
I am trying to run a basic code of c in linux[ubuntu] to search bluetooth device, but i am facing some problem.
我正在尝试在 linux[ubuntu] 中运行基本的 c 代码来搜索蓝牙设备，但我遇到了一些问题。
By using command sudo apt-get install bluez, to install required blueZ library it is saying that bluez is already newest version.
通过使用 command sudo apt-get install bluez，安装所需的 blueZ 库是说 bluez 已经是最新版本。
But error comes that not able to find bluetooth.hand other files in compiling C source code, with gcc -o simplescan simplescan.c -lbluetooth
但是错误来了，bluetooth.h在编译C源代码时无法找到和其他文件，用gcc -o simplescan simplescan.c -lbluetooth
Is there a complete library package, or do I have to download these header files?.
是否有完整的库包，或者我必须下载这些头文件？。
I am following this link
我正在关注此链接
回答by SamuelNLP
Maybe you didn't include the essential header.
也许你没有包含必要的标题。
here's an example of code to scan for bluetooth devices
这是扫描蓝牙设备的代码示例
#include <stdio.h>
#include <stdlib.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 *ii = NULL;
int max_rsp, num_rsp;
int dev_id, sock, len, flags;
int i;
char addr[19] = { 0 };
char name[248] = { 0 };
dev_id = hci_get_route(NULL);
sock = hci_open_dev( dev_id );
if (dev_id < 0 || sock < 0) {
perror("opening socket");
exit(1);
}
len = 8;
max_rsp = 255;
flags = IREQ_CACHE_FLUSH;
ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));
num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
if( num_rsp < 0 ) perror("hci_inquiry");
for (i = 0; i < num_rsp; i++) {
ba2str(&(ii+i)->bdaddr, addr);
memset(name, 0, sizeof(name));
if (hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name),
name, 0) < 0)
strcpy(name, "[unknown]");
printf("%s %s\n", addr, name);
}
free( ii );
close( sock );
return 0;
}
to compile it on linux, just do
要在 linux 上编译它，只需执行
gcc -o simplescan simplescan.c -lbluetooth
EDIT:
编辑：
Original code can be found in here
原始代码可以在这里找到
回答by Sathish
As for i know there no packages for these headers. You have to download the following header files from internet.
至于我知道这些标题没有包。您必须从 Internet 下载以下头文件。
bluetooth.hhci.hhci_lib.h
bluetooth.hhci.hhci_lib.h
and create a directory called "bluetooth" under /usr/lib/in your host machine and copy the above headers to /usr/lib/bluetooth/. Then compile your program, it should work.
并在您的主机bluetooth下创建一个名为“ ”的目录/usr/lib/，并将上述标题复制到/usr/lib/bluetooth/. 然后编译你的程序，它应该可以工作。
Note: while compiling link with -lbluetooth
注意：在编译链接时 -lbluetooth
回答by Eric des Courtis
You need to install the linux-headers package. On Ubuntu or Debian this is done by doing this:
您需要安装 linux-headers 包。在 Ubuntu 或 Debian 上，这是通过执行以下操作来完成的：
sudo apt install linux-headers
回答by Viktor Bliakhovskyi
This solved my problem:
这解决了我的问题：
apt-get install libbluetooth-dev
