如何在Android的HID游戏手柄中实现左右模拟触发器

jibin_raj24

我正在使用具有4轴(14位),16个按钮,2个模拟触发器(1个字节)和一个帽子开关的HID游戏手柄。我目前将X和Y轴用于左模拟摇杆,将Rx和Ry轴用于右模拟摇杆,将Z和Rz轴用于左右触发。我能够注册所有按钮和模拟读数(已在Android中使用Gamepad tester在Linux中使用jstest-gtk进行了测试),但问题是,在(Android)游戏中,触发器应该是第7轴和第8轴,在我的情况下,Z和Rz分别指定为轴14和15。我还尝试过使用Acceleration(轴:11),Brake(轴:12),Rudder(轴:9)和Throttle(轴:10),但使用轴7和8(这是默认的触发轴)未分配。

这是我的HID报告描述符:-

0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
0x09, 0x05,                    // USAGE (Game Pad)
0xa1, 0x01,                    // COLLECTION (Application)

0x85, 0x01,                    //   REPORT_ID (1)
0x09, 0x01,                    //   USAGE (Pointer)
0xa1, 0x00,                    //   COLLECTION (Physical)
0x09, 0x30,                    //     USAGE (X) - Left Analog Left(-ve),Right(+ve)
0x09, 0x31,                    //     USAGE (Y) - Left Analog Up(-ve), Down(+ve)
0x09, 0x33,                    //     USAGE (Rx) - Right Analog Left(-ve), Right(+ve)
0x09, 0x34,                    //     USAGE (Ry) - Right Analog Up(-ve), Down(+ve)
0x16, 0x01, 0xE0,              //     LOGICAL_MINIMUM (-8191)
0x26, 0xFF, 0x1F,              //     LOGICAL_MAXIMUM (8191)        
0x75, 0x10,                    //     REPORT_SIZE (16)
0x95, 0x04,                    //     REPORT_COUNT (4)
0x81, 0x02,                    //     INPUT (Data,Var,Abs)
0xc0,                          //   END_COLLECTION
0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop) 
0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
0x26, 0xFF, 0x00,              //     LOGICAL_MAXIMUM (255)
0x09, 0x32,                    //     USAGE (Z) - L2 Trigger(Shoulderpads Trigger)
0x09, 0x35,                    //     USAGE (Rz) - R2 Trigger(Shoulderpads Trigger)    
0x75, 0x08,                    //     REPORT_SIZE (8)    
0x95, 0x02,                    //     REPORT_COUNT (2)    
0x81, 0x02,                    //     INPUT (Data,Var,Abs)    

0x05, 0x09,                    //   USAGE_PAGE (Button)
0x19, 0x01,                    //   USAGE_MINIMUM (Button 1)    
0x29, 0x10,                    //   USAGE_MAXIMUM (Button 16)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)     
0x95, 0x10,                    //   REPORT_COUNT (16)
0x75, 0x01,                    //   REPORT_SIZE (1)
0x81, 0x02,                    //   INPUT (Data,Var,Abs)

0x05, 0x01,                    //   USAGE_PAGE (Generic Desktop)
0x09, 0x39,                    //   USAGE (Hat switch)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x07,                    //   LOGICAL_MAXIMUM (7)
0x35, 0x00,                    //   PHYSICAL_MINIMUM (0)
0x46, 0x3b, 0x01,              //   PHYSICAL_MAXIMUM (315)
0x65, 0x14,                    //   UNIT (Eng Rotation:Centimeter)
0x75, 0x04,                    //   REPORT_SIZE (4)
0x95, 0x01,                    //   REPORT_COUNT (1)
0x81, 0x42,                    //   INPUT (Data,Var,Abs,Null)
0x95, 0x01,                    //   REPORT_COUNT (1)
0x75, 0x04,                    //   REPORT_SIZE (4)
0x81, 0x43,                    //   INPUT (Cnst,Var,Abs,Null)

0xc0                           // END_COLLECTION

谢谢您的任何帮助。

编辑:-这是我根据Nipo指定的Anrdoid CDD文档尝试的新报告描述符:-

0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
0x09, 0x05,                    // USAGE (Game Pad)
0xa1, 0x01,                    // COLLECTION (Application)
0x85, 0x01,                    //   REPORT_ID (1)
0x09, 0x01,                    //   USAGE (Pointer)
0xa1, 0x00,                    //   COLLECTION (Physical)
0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
0x09, 0x30,                    //     USAGE (X) - Left Analog Left(-ve),Right(+ve)
0x09, 0x31,                    //     USAGE (Y) - Left Analog Up(-ve), Down(+ve)
0x09, 0x32,                    //     USAGE (Z) - Right Analog X
0x09, 0x35,                    //     USAGE (Rz) - Right Analog Y
0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
0x25, 0x7F,                    //     LOGICAL_MAXIMUM (127)       
0x75, 0x08,                    //     REPORT_SIZE (8)
0x95, 0x04,                    //     REPORT_COUNT (4)
0x81, 0x02,                    //     INPUT (Data,Var,Abs)
0x05, 0x02,                    // USAGE_PAGE (Simulation Control)            
0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
0x26, 0xFF, 0x00,              //     LOGICAL_MAXIMUM (255)        
0x09, 0xC4,                    //     USAGE(Acceleration)
0x09, 0xC5,                    //     USAGE(Brake)        
0x75, 0x08,                    //     REPORT_SIZE (8)
0x95, 0x02,                    //     REPORT_COUNT (2)    
0x81, 0x02,                    //     INPUT (Data,Var,Abs)
0x05, 0x09,                    //   USAGE_PAGE (Button)
0x09, 0x01,                    //   USAGE(Button 1)
0x09, 0x02,                    //   USAGE(Button 2)
0x09, 0x04,                    //   USAGE(Button 4)
0x09, 0x05,                    //   USAGE(Button 5)
0x09, 0x07,                    //   USAGE(Button 7)
0x09, 0x08,                    //   USAGE(Button 8)
0x09, 0x0E,                    //   USAGE(Button 14)
0x09, 0x0F,                    //   USAGE(Button 15)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)     
0x95, 0x08,                    //   REPORT_COUNT (8)
0x75, 0x01,                    //   REPORT_SIZE (1)
0x81, 0x02,                    //   INPUT (Data,Var,Abs)           
0x05, 0x01,                    //   USAGE_PAGE (Generic Desktop)
0x09, 0x39,                    //   USAGE (Hat switch)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x07,                    //   LOGICAL_MAXIMUM (7)
0x35, 0x00,                    //   PHYSICAL_MINIMUM (0)
0x46, 0x3b, 0x01,              //   PHYSICAL_MAXIMUM (315)
0x65, 0x14,                    //   UNIT (Eng Rotation:Centimeter)
0x75, 0x04,                    //   REPORT_SIZE (4)
0x95, 0x01,                    //   REPORT_COUNT (1)
0x81, 0x42,                    //   INPUT (Data,Var,Abs,Null)
0x65, 0x00,                    // Unit (None)
/*!@ The below section is taken from the page 31 of the document given
  in the link below.
  https://www.silabs.com/documents/public/application-notes/AN993.pdf
 */
0x05, 0x0C,                    //   USAGE_PAGE (Consumer)
0x0A, 0x23, 0x02,              //   USAGE (AC Home)
0x0A, 0x24, 0x02,              //   USAGE (AC Back)
0x75, 0x01,                    //   REPORT_SIZE(1)
0x95, 0x02,                    //   REPORT_COUNT(2)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
0x35, 0x00,                    //   PHYSICAL_MINIMUM (0)
0x45, 0x01,                    //   PHYSICAL_MAXIMUM (1)
0x81, 0x42,                    //   INPUT (Data,Var,Abs,Null)
0x95, 0x01,                    //   REPORT_COUNT (2)
0x75, 0x02,                    //   REPORT_SIZE (1)
0x81, 0x43,                    //   INPUT (Cnst,Var,Abs,Null)
0xc0,                          //   END_COLLECTION
0xc0,                          //   END_COLLECTION
jibin_raj24

这是为我工作的报表描述符:

0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
0x09, 0x05,                    // USAGE (Game Pad)
0xa1, 0x01,                    // COLLECTION (Application)    

0x85, 0x01,                    //   REPORT_ID (1)
0x09, 0x01,                    //   USAGE (Pointer)
0xa1, 0x00,                    //   COLLECTION (Physical)    
0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
0x09, 0x30,                    //     USAGE (X) - Left Analog Left(-ve),Right(+ve)
0x09, 0x31,                    //     USAGE (Y) - Left Analog Up(-ve), Down(+ve)    
0x09, 0x32,                    //     USAGE (Z) - Right Analog Left(-ve)Right(+ve)
0x09, 0x35,                    //     USAGE (Rz)- Right Analog Up(-ve), Down(+ve)
0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
0x75, 0x08,                    //     REPORT_SIZE (8)
0x95, 0x04,                    //     REPORT_COUNT (4)
0x81, 0x02,                    //     INPUT (Data,Var,Abs)
0xc0,                          //   END_COLLECTION

0x05, 0x02,                    //     USAGE_PAGE (Simulation Control)
0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
0x26, 0xFF, 0x00,              //     LOGICAL_MAXIMUM (255)
0x09, 0xC4,                    //     USAGE(Acceleration)
0x09, 0xC5,                    //     USAGE(Brake)           
0x75, 0x08,                    //     REPORT_SIZE (8)
0x95, 0x02,                    //     REPORT_COUNT (2)
0x81, 0x02,                    //     INPUT (Data,Var,Abs)

0x05, 0x09,                    //   USAGE_PAGE (Button)
0x19, 0x01,                    //   USAGE_MINIMUM (Button 1)
0x29, 0x10,                    //   USAGE_MAXIMUM (Button 16)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
0x95, 0x10,                    //   REPORT_COUNT (16)
0x75, 0x01,                    //   REPORT_SIZE (1)
0x81, 0x02,                    //   INPUT (Data,Var,Abs)

0x05, 0x01,                    //   USAGE_PAGE (Generic Desktop)
0x09, 0x39,                    //   USAGE (Hat switch)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x07,                    //   LOGICAL_MAXIMUM (7)
0x35, 0x00,                    //   PHYSICAL_MINIMUM (0)
0x46, 0x3b, 0x01,              //   PHYSICAL_MAXIMUM (315)
0x65, 0x14,                    //   UNIT (Eng Rotation:Centimeter)
0x75, 0x04,                    //   REPORT_SIZE (4)
0x95, 0x01,                    //   REPORT_COUNT (1)
0x81, 0x42,                    //   INPUT (Data,Var,Abs,Null)
0x95, 0x01,                    //   REPORT_COUNT (1)
0x75, 0x04,                    //   REPORT_SIZE (4)
0x81, 0x43,                    //   INPUT (Cnst,Var,Abs,Null)
0x65, 0x00,                    //   Unit (None)

0x05, 0x0C,                    //   USAGE_PAGE (Consumer)
0x0A, 0x23, 0x02,              //   USAGE (AC Home)
0x0A, 0x24, 0x02,              //   USAGE (AC Back)
0x75, 0x01,                    //   REPORT_SIZE(1)
0x95, 0x02,                    //   REPORT_COUNT(2)
0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
0x35, 0x00,                    //   PHYSICAL_MINIMUM (0)
0x45, 0x01,                    //   PHYSICAL_MAXIMUM (1)
0x81, 0x42,                    //   INPUT (Data,Var,Abs,Null)

0x95, 0x01,                    //   REPORT_COUNT (2)
0x75, 0x02,                    //   REPORT_SIZE (1)
0x81, 0x43,                    //   INPUT (Cnst,Var,Abs,Null)

0xc0                           // END_COLLECTION

这是我在测试时能够看到的一些发现:-

  1. 但是上述描述符并非在所有游戏中都适用,我发现在Android中某些游戏可以选择配置/自定义按钮映射,例如DEAD TRIGGER 2-Zombie Survival Shooter FPS,但在此类游戏中默认右操纵杆的轴是Rx和Ry,因此在此类游戏中,右操纵杆和触发器(用于触发器的轴仍然是个谜)必须明确映射。
  2. 但是在没有选项可以更改映射此HID描述符的按钮的游戏中,即使是触发器也可以正常工作(这使我相信这是定义描述符的正确方法)。

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