Android blueZ HCI(一个):hciconfig实施和经常使用
关键词:hciconfighcitool hcidump
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Android blueZ HCI(一):hciconfig实现及经常用法
Android blueZ hci(二):hcitool hcidump经常用法
一、Hciconfig
1、adb shell 下。hciconfig 运行文件的位
/system/xbin/hciconfig
对应文件夹下Android.mk文件,生成hciconfig
## hciconfig#include $(CLEAR_VARS)LOCAL_SRC_FILES:= \csr.c \csr_h4.c \hciconfig.c………………LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)LOCAL_MODULE_TAGS := optionalLOCAL_MODULE:=hciconfiginclude $(BUILD_EXECUTABLE)
2、hciconfig代码实现
idh.code\external\bluetooth\bluez\tools\hciconfig.c
main函数主要有两部分功能:main_options操作。命令的运行;
以下我们分两部分分析
int main(int argc, char *argv[]){int opt, ctl, i, cmd=0;//(1)、hciconfig两个命main_options,help和all两个命令。while ((opt=getopt_long(argc, argv, "ah", main_options, NULL)) != -1) {switch(opt) {case 'a':all = 1;break;case 'h':default:usage();exit(0);}}//(2)、命令运行部分argc -= optind;argv += optind;optind = 0;/* Open HCI socket */if ((ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI)) < 0) {perror("Can't open HCI socket.");exit(1);}if (argc < 1) {print_dev_list(ctl, 0);exit(0);}di.dev_id = atoi(argv[0] + 3);argc--; argv++;if (ioctl(ctl, HCIGETDEVINFO, (void *) &di)) {perror("Can't get device info");exit(1);}if (hci_test_bit(HCI_RAW, &di.flags) &&!bacmp(&di.bdaddr, BDADDR_ANY)) {int dd = hci_open_dev(di.dev_id);hci_read_bd_addr(dd, &di.bdaddr, 1000);hci_close_dev(dd);}while (argc > 0) {for (i = 0; command[i].cmd; i++) {if (strncmp(command[i].cmd, *argv, 5))continue;if (command[i].opt) {argc--; argv++;}command[i].func(ctl, di.dev_id, *argv);cmd = 1;break;}argc--; argv++;}if (!cmd)print_dev_info(ctl, &di);close(ctl);return 0;}
(1)、hciconfig两个命main_options,help和all两个命令
int main(int argc, char *argv[]){int opt, ctl, i, cmd=0;//1)、hciconfig两个命main_options,help和all两个命令。while ((opt=getopt_long(argc, argv, "ah", main_options, NULL)) != -1) {//1)、main_options。switch(opt) {case 'a':all = 1;break;//2)、假设是all命令运行下去;case 'h':default:usage();//3)、假设是help命令打印出命令用法。exit(0);}}………………}
1)、main_options;
while((opt=getopt_long(argc, argv, "ah", main_options, NULL)) != -1) {
getopt被用来解析命令行选项參数。getopt_long。解析命令參数支持长选项。即一对短横线、一个描写叙述性选项名称,还能够包括一个使用等号连接到选项的參数。
http://blog.csdn.net/slmmlk2011_2/article/details/7964218中有具体介绍。
即:hciconfig–all
main_optionsstatic struct option main_options[] = {{ "help",0, 0, 'h' },{ "all",0, 0, 'a' },{ 0, 0, 0, 0 }};
2)、ops 解析出来数据,假设是a,打印出蓝牙相关信息
case 'a':all = 1;break;
后面这部分和命令解析一起分析。
3)、假设是help命令,打印出命令用法。
case 'h':default:usage();exit(0);
假设是help 运行usage这个函数。以下分析这个函数
idh.code\external\bluetooth\bluez\tools\hciconfig.c
static void usage(void){int i;printf("hciconfig - HCI device configuration utility\n");printf("Usage:\n""\thciconfig\n""\thciconfig [-a] hciX [command]\n");printf("Commands:\n");for (i=0; command[i].cmd; i++)printf("\t%-10s %-8s\t%s\n", command[i].cmd,command[i].opt ?command[i].opt : " ",command[i].doc);}
这个函数比較简单,就是不command[]结构体中的命令字符串打印出来:以下两个截图就一目了然了:
命令运行结果例如以下:
static struct {char *cmd;//命令。比方hciconfig up;void (*func)(int ctl, int hdev, char *opt);//命令运行函数。char *opt;//char *doc;//命令描写叙述} command[] = {{ "up",cmd_up,0,"Open and initialize HCI device" },{ "down",cmd_down,0,"Close HCI device" },{ "reset",cmd_reset,0,"Reset HCI device" },………………}这部分以:{ "up", cmd_up, 0, "Open and initialize HCIdevice" },为例说明
使用up命令时。会调用到,cmd_up这个函数:
idh.code\external\bluetooth\bluez\tools\hciconfig.c
static void cmd_up(int ctl, int hdev, char *opt){/* Start HCI device */if (ioctl(ctl, HCIDEVUP, hdev) < 0) {if (errno == EALREADY)return;fprintf(stderr, "Can't init device hci%d: %s (%d)\n",hdev, strerror(errno), errno);exit(1);}}
(2)、命令运行部分
Main(){………………argc -= optind;argv += optind;optind = 0;/* Open HCI socket *///1)、打开HCI socket通信if ((ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI)) < 0) {/perror("Can't open HCI socket.");exit(1);}if (argc < 1) {print_dev_list(ctl, 0);exit(0);}di.dev_id = atoi(argv[0] + 3);argc--; argv++;//2)、通过ioctl获取HCI驱动信息if (ioctl(ctl, HCIGETDEVINFO, (void *) &di)) {perror("Can't get device info");exit(1);}//3)、hci_test_bit bacmpif (hci_test_bit(HCI_RAW, &di.flags) &&!bacmp(&di.bdaddr, BDADDR_ANY)) {int dd = hci_open_dev(di.dev_id);hci_read_bd_addr(dd, &di.bdaddr, 1000);hci_close_dev(dd);}//4)命令运行while (argc > 0) {for (i = 0; command[i].cmd; i++) {if (strncmp(command[i].cmd, *argv, 5))continue;if (command[i].opt) {argc--; argv++;}command[i].func(ctl, di.dev_id, *argv);cmd = 1;break;}argc--; argv++;}if (!cmd)//没有对应的命令打印出print_dev_info(ctl, &di);//5)、关闭ctl,完毕操作close(ctl);return 0;}
1)、打开HCI socket通信
/* Open HCI socket */if ((ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI)) < 0) {int socket(int domain, int type, int protocol);
參数说明:
domain:指明所使用的协议族,通常为PF_INET,表示TCP/IP协议。
type:參数指定socket的类型,基本上有三种:数据流套接字、数据报套接字、原始套接字
protocol:通常赋值"0"。
程序中蓝牙建立:
damain:使用AF_BLUETOOTH;idh.code\3rdparty\bluetooth\Trout_BT\special\android\kernel\include\net\bluetooth\bluetooth.h#define AF_BLUETOOTH31type: SOC_SEQPACKET,以Packet为单位读取。SOC_RAW:原始socketenum sock_type {SOCK_STREAM= 1,SOCK_DGRAM= 2,SOCK_RAW= 3,SOCK_RDM= 4,SOCK_SEQPACKET= 5,SOCK_DCCP= 6,SOCK_PACKET= 10,};protocol:使用对应建立的Socket的protocol,不同类型的入L2CAP、HCI、SCO……#define BTPROTO_L2CAP0#define BTPROTO_HCI1#define BTPROTO_SCO2#define BTPROTO_RFCOMM3#define BTPROTO_BNEP4#define BTPROTO_CMTP5#define BTPROTO_HIDP6#define BTPROTO_AVDTP72)、通过ioctl获取HCI驱动信息,写入struct hci_dev_info di结构体
if(ioctl(ctl, HCIGETDEVINFO, (void *) &di))
idh.code\3rdparty\bluetooth\Trout_BT\special\android\kernel\include\net\bluetooth\hci.h相关命令的定义
#define HCIGETDEVLIST_IOR('H', 210, int)#define HCIGETDEVINFO_IOR('H', 211, int)#define HCIGETCONNLIST_IOR('H', 212, int)#define HCIGETCONNINFO_IOR('H', 213, int)#define HCIGETAUTHINFO_IOR('H', 215, int)di对应的数据结构static struct hci_dev_info di;struct hci_dev_info {__u16 dev_id;char name[8];bdaddr_t bdaddr;__u32 flags;__u8 type;__u8 features[8];__u32 pkt_type;__u32 link_policy;__u32 link_mode;__u16 acl_mtu;__u16 acl_pkts;__u16 sco_mtu;__u16 sco_pkts;struct hci_dev_stats stat;};3)、hci_test_bitbacmp
if (hci_test_bit(HCI_RAW, &di.flags) &&!bacmp(&di.bdaddr, BDADDR_ANY)) {int dd = hci_open_dev(di.dev_id);hci_read_bd_addr(dd, &di.bdaddr, 1000);hci_close_dev(dd);}
推断di中相关參数。
hci_test_bit检測*addr的第nr位是否为1(*addr右起最低位为第0位)
static inline int hci_test_bit(int nr, void *addr){return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));}
4)、命令运行,这部分是命令实现的部分
while (argc > 0) {for (i = 0; command[i].cmd; i++) {if (strncmp(command[i].cmd, *argv, 5))//通过for循环比較第二个參数continue;if (command[i].opt) {argc--; argv++;}command[i].func(ctl, di.dev_id, *argv);//假设參数对应,就运行对应的命令函数cmd = 1;break;}argc--; argv++;}if (!cmd)//没有对应的命令打印出print_dev_info(ctl, &di);
a、如:if (strncmp(command[i].cmd, *argv, 5))// 通过for循环比較第二个參数
| 如命令:hciconfighci0 commands
argv 的值就为:commands字符串,假设5个字符相等。
b、假设对应。就运行对应的命令函数
command[i].func(ctl, di.dev_id, *argv);c、假设是commands命令:对应command[]结构体中的数组
{ "commands",cmd_commands,0,"Display supported commands" },
command[i].func = cmd_commands
对应commands 的实现函数cmd_commands函数的实现:
static void cmd_commands(int ctl, int hdev, char *opt){uint8_t cmds[64];char *str;int i, n, dd;dd = hci_open_dev(hdev);if (dd < 0) {fprintf(stderr, "Can't open device hci%d: %s (%d)\n",hdev, strerror(errno), errno);exit(1);}if (hci_read_local_commands(dd, cmds, 1000) < 0) {fprintf(stderr, "Can't read support commands on hci%d: %s (%d)\n",hdev, strerror(errno), errno);exit(1);}print_dev_hdr(&di);for (i = 0; i < 64; i++) {if (!cmds[i])continue;printf("%s Octet %-2d = 0x%02x (Bit",i ? "\t\t ": "\tCommands:", i, cmds[i]);for (n = 0; n < 8; n++)if (cmds[i] & (1 << n))printf(" %d", n);printf(")\n");}str = hci_commandstostr(cmds, "\t", 71);printf("%s\n", str);bt_free(str);hci_close_dev(dd);}这个是针对每一个命令实现的具体函数。//5)、关闭ctl,完毕操作close(ctl);return 0;
3、hciconfig命令经常用法:
(1)、帮助命令:查看hciconfig支持的命令和用法
hciconfig –h或者hciconfig --hlep
(2)、查看蓝牙相关信息
hciconfig –a
root@android:/ # hciconfig -ahciconfig -ahci0: Type: BR/EDR Bus: UART//蓝牙的接口类型。这个是UART的。还有USB、PCI………… BD Address: 00:16:53:96:22:53 ACL MTU: 1021:8 SCO MTU: 120:10//蓝牙地址 UP RUNNING PSCAN//命令状态 RX bytes:2846 acl:0 sco:0 events:67 errors:0 TX bytes:2034 acl:0 sco:0 commands:80 errors:0 Features: 0xff 0xff 0x8d 0xfe 0x9b 0xbf 0x79 0x83 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3//支持数据包 Link policy: RSWITCH HOLD SNIFF PARK Link mode: SLAVE ACCEPT//连接的类型。是主设备、从设备 Name: 'sp8825c1'//蓝牙名称 Class: 0x5a020c//蓝牙的类型 Service Classes: Networking, Capturing, Object Transfer, Telephony//支持的类型 Device Class: Phone, Smart phone HCI Version: 2.1 (0x4) Revision: 0x1250//HCI版本号 LMP Version: 2.1 (0x4) Subversion: 0x1250//LMP版本号 Manufacturer: Ericsson Technology Licensing (0)//作者
(3)、启动蓝牙
hciconfig hci0 up
(4)、关闭蓝牙
hciconfig hci0 down
(5)、查看hci命令
hciconfighci0 commands
(6)、显示OOB数据
Hciconfig hci0 oobdata
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