杰理AC695N_SDK里面的hid_user.c测试通过蓝牙hid通道控制手机屏幕滑动或者音量增减

该文件sdk的hid_user.c的最下面有这样的描述,告诉开发者应该怎么打开自定义的蓝牙hid报告描述符

// 用户修改成自定义的描述符说明
// 1、在void bredr_handle_register();中调用user_hid_descriptor_init;
// 2、user_hid_sdp_init换成自己的表
// 3、文件上方HID_CHANGE_DESCRIPTOR定义为1
// 4、在bt_profile_config.c文件中extern sdp_make_hid_service_data数组，
//   把sdp_hid_service_data替换为sdp_make_hid_service_data.
// 5、把const u8 hid_conn_depend_on_dev_company的值置0;

当你把上面步骤弄完,下面我解析一下这个.c文件的应该如何调用api连接手机测试.

const u8 use_hid_descriptor[] = {0x05, 0x01,       // USAGE_PAGE (Generic Desktop Controls)0x09, 0x02,       // USAGE (Mouse)0xA1, 0x01,       // COLLECTION (Application)0x85, 0x01,       //   REPORT_ID (1)0x05, 0x09,       //   USAGE_PAGE (Button)0x19, 0x01,       //   USAGE_MINIMUM (Button 1)0x29, 0x03,       //   USAGE_MAXIMUM (Button 3)0x15, 0x00,       //   LOGICAL_MINIMUM (0)0x25, 0x01,       //   LOGICAL_MAXIMUM (1)0x95, 0x03,       //   REPORT_COUNT (3)0x75, 0x01,       //   REPORT_SIZE (1)0x81, 0x02,       //   INPUT (Data,Var,Abs)0x75, 0x05,       //   REPORT_SIZE (5)0x95, 0x01,       //   REPORT_COUNT (1)0x81, 0x03,       //   INPUT (Cnst,Var,Abs)0x05, 0x01,       //   USAGE_PAGE (Generic Desktop Controls)0x09, 0x01,       //   USAGE (Pointer)0xA1, 0x00,       //   COLLECTION (Physical)0x09, 0x30,       //     USAGE (X)0x09, 0x31,       //     USAGE (Y)0x16, 0x00, 0xD8, //   LOGICAL_MINIMUM (-6000)0x26, 0x00, 0x28, //   LOGICAL_MAXIMUM (6000)0x75, 0x10,       //     REPORT_SIZE (16)0x95, 0x02,       //     REPORT_COUNT (2)0x81, 0x06,       //     INPUT (Data,Var,Rel)0xC0,             //   END_COLLECTION0xC0,             // END_COLLECTION0x05, 0x0C,       // USAGE_PAGE (Consumer Devices)0x09, 0x01,       // USAGE (Consumer Control)0xA1, 0x01,       // COLLECTION (Application)0x85, 0x02,       //   REPORT_ID (2)0x15, 0x00,       //   LOGICAL_MINIMUM (0)0x25, 0x01,       //   LOGICAL_MAXIMUM (1)0x09, 0x34,       //   USAGE (Stop)             0000 0001 (0x01)0x09, 0x40,       //   USAGE (Menu)             0000 0010 (0x02)0x0A, 0x23, 0x02, //   USAGE (Forward)          0000 0100 (0x04)0x0A, 0x24, 0x02, //   USAGE (Backward)         0000 1000 (0x08)0x09, 0xE9,       //   USAGE (Volume Up)        0001 0000 (0x10)0x09, 0xEA,       //   USAGE (Volume Down)      0010 0000 (0x20)0x09, 0xB0,       //   USAGE (Play)             0100 0000 (0x40)0x09, 0xB1,       //   USAGE (Pause)            1000 0000 (0x80)0x09, 0xB3,       //   USAGE (Fast Forward)         0000 0001 0000 0000 (0x0100)0x09, 0xB4,       //   USAGE (Rewind)               0000 0010 0000 0000 (0x0200)0x09, 0xB5,       //   USAGE (Scan Next Track)      0000 0100 0000 0000 (0x0400)0x09, 0xB6,       //   USAGE (Scan Previous Track)  0000 1000 0000 0000 (0x0800)0x09, 0xB7,       //   USAGE (Stop)                 0001 0000 0000 0000 (0x010000)0x09, 0xCD,       //   USAGE (Play/Pause)           0010 0000 0000 0000 (0x020000)0x75, 0x01,       //   REPORT_SIZE (1)0x95, 0x0E,       //   REPORT_COUNT (14)           //只用到16个bit的14个bit0x81, 0x22,       //   INPUT (Data,Var,Abs,No Wrap,Linear,No Preferred State,No Null Position)0x75, 0x01,       //   REPORT_SIZE (1)0x95, 0x02,       //   REPORT_COUNT (2)            //要补齐多余2个没用的bit0x81, 0x02,       //   INPUT (Data,Var,Abs)0xC0              // END_COLLECTION};

上面的是他的报告描述符,我给他增加了注释.如果你不懂hid协议,建议去看看这篇文章usb hid报告描述符,

那么我们根据报告描述符创建c语言的数据结构

struct user_hid_consumer_cmd
{// Bluetooth HID Protocol Message Header Octetu8 HIDP_Hdr;// Bluetooth HID Boot Reportsu8 report_id;u8 button;s16 x;s16 y;
} _GNU_PACKED_;
static struct user_hid_consumer_cmd u_consumer = {.HIDP_Hdr = 0xA1,.report_id = 0x01,.button = 1, // 1:mouse left 2:mid 3:mouse right.x = 1,      // 应该是相对坐标,因为值不变,下一次的坐标点会变化.y = -50,
};

前3个是原本就有的,x和y是我根据报告描述符增加的,
最后你在合适的地方调用下面这个2个函数

put_buf((u8 *)&u_consumer, sizeof(u_consumer));
user_data_write_sub((u8 *)&u_consumer, sizeof(u_consumer));

你增加一个2s的定时器,当手机连接上单片机后,手机就会有一个模拟鼠标的值一点一点往下滑动.

//
当你想根据报告描述符控制手机的音量,返回,播放等以下等功能时

//   USAGE (Stop)             
//   USAGE (Menu)             
//   USAGE (Forward)          
//   USAGE (Backward)         
//   USAGE (Volume Up)        
//   USAGE (Volume Down)      
//   USAGE (Play)             
//   USAGE (Pause)            
//   USAGE (Fast Forward)       
//   USAGE (Rewind)             
//   USAGE (Scan Next Track)    
//   USAGE (Scan Previous Track)
//   USAGE (Stop)

可以根据厂商原本的测试案例
u_consumer.button=的值就是我最上面注释后面写的16进制
就能通过杰理这款芯片控制手机的各种按键操作

struct user_hid_consumer_cmd {//Bluetooth HID Protocol Message Header Octetu8 HIDP_Hdr;//Bluetooth HID Boot Reportsu8 report_id;u8 button;
} _GNU_PACKED_;
static struct user_hid_consumer_cmd u_consumer = {.HIDP_Hdr = 0xA1,.report_id = 0x02, //注意这里的赋值跟上面鼠标滑动的赋值不一样.button = 0,
};
void hid_consumer_send_test(u8 menu)
{if (menu == 1){// u_consumer.button = CONSUMER_MENU;}if (menu == 2){// u_consumer.button = CONSUMER_MENU_ESCAPE;}if (menu == 3){// u_consumer.button = CONSUMER_AC_HOME;}if (menu == 4){// u_consumer.button = 0x40;}put_buf((u8 *)&u_consumer, sizeof(u_consumer));user_data_write_sub((u8 *)&u_consumer, sizeof(u_consumer));u_consumer.button = 0x00;user_data_write_sub((u8 *)&u_consumer, sizeof(u_consumer));
}
//最后在合适的地方调用hid_consumer_send_test(u8 menu)这个函数,
//menu的值你可以根据报告描述符后面的16进制的注释自己追加进去