10点触摸屏，report id 配置如下：
static struct hidg_func_descriptor touch_screen = {
.subclass = 0,
.protocol = 8,
.report_length = (64),
.report_desc_length
= (69+63*9+40),
.report_desc = {
0x05, 0x0D,
// Usage Page (Digitizer)
0x09, 0x04,
// Usage (Touch Screen)
0xA1, 0x01,
// Collection (Application)
0x85, 0x01,
// Report ID (1)
0x09, 0x22, // Usage (Finger)
0xA1, 0x02, // Collection (Logical)
0x09, 0x42, // Usage (Tip Switch)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x01, // Logical Maximum (1)
0x75, 0x01, // Report Size (1)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x95, 0x01, // Report Count (1)
0x81, 0x03, // Input (Cnst,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x09, 0x51, // Usage (Contact Identifier)
0x25, 0x3F, // Logical Maximum (63)
0x75, 0x06, // Report Size (6)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x05, 0x01,
// Usage Page (Generic Desktop)
0x75, 0x10,
// Report Size (16)
0x55, 0x0E,
// Unit Exponent (-2)
0x65, 0x11,
// Unit (SI Lin: Length (cm)
0x09, 0x30,
// Usage (X)
0x26, 0x00, 0x40,
// Logical Maximum (16384)
0x35, 0x00,
// Physical Minimum (0)
0x46, 0x48, 0x1B,
// Physical Maximum (6984)
0x81, 0x42,
// Input (Data,Var,Abs,NWrp,Lin,Pref,Null,Bit)
0x09, 0x31,
// Usage (Y)
0x26, 0x80, 0x25,
// Logical Maximum (9600)
0x46, 0x58, 0x0F,
// Physical Maximum (3928)
0x81, 0x42,
// Input (Data,Var,Abs,NWrp,Lin,Pref,Null,Bit)
0xC0, // End Collection
0x05, 0x0D,
// Usage Page (Digitizer)
0x09, 0x22, // Usage (Finger)
0xA1, 0x02, // Collection (Logical)
0x09, 0x42, // Usage (Tip Switch)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x01, // Logical Maximum (1)
0x75, 0x01, // Report Size (1)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x95, 0x01, // Report Count (1)
0x81, 0x03, // Input (Cnst,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x09, 0x51, // Usage (Contact Identifier)
0x25, 0x3F, // Logical Maximum (63)
0x75, 0x06, // Report Size (6)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x05, 0x01,
// Usage Page (Generic Desktop)
0x75, 0x10,
// Report Size (16)
0x55, 0x0E,
// Unit Exponent (-2)
0x65, 0x11,
// Unit (SI Lin: Length (cm)
0x09, 0x30,
// Usage (X)
0x26, 0x00, 0x40,
// Logical Maximum (16384)
0x35, 0x00,
// Physical Minimum (0)
0x46, 0x48, 0x1B,
// Physical Maximum (6984)
0x81, 0x42,
// Input (Data,Var,Abs,NWrp,Lin,Pref,Null,Bit)
0x09, 0x31,
// Usage (Y)
0x26, 0x80, 0x25,
// Logical Maximum (9600)
0x46, 0x58, 0x0F,
// Physical Maximum (3928)
0x81, 0x42,
// Input (Data,Var,Abs,NWrp,Lin,Pref,Null,Bit)
0xC0, // End Collection
... (其他8个finger)
0x05, 0x0D, // Usage Page (Digitizer)
0x09, 0x56, // Usage (Scan Time)
0x55, 0x00, // Unit Exponent (0)
0x65, 0x00, // Unit (None)
0x27, 0xFF, 0xFF, 0x00, 0x00, // Logical Maximum (65535)
0x95, 0x01, // Report Count (1)
0x75, 0x10, // Report Size (16)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x09, 0x54, // Usage (Contact Count)
0x25, 0x7F, // Logical Maximum (127)
0x95, 0x01, // Report Count (1)
0x75, 0x08, // Report Size (8)
0x81, 0x02, // Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit)
0x85, 0x02, // Report ID(2)
0x09, 0x55, // Usage (Contact Count Maximum)
0x95, 0x01, // Report Count (1)
0x25, 0x0A, // LOGIC MAX(10)
0xB1, 0x02, // Feature (Data,Var,Abs,NWrp,Lin,Pref,NNul,NVol,Bit)
0xC0, // End Collection
}
};
如果上面黑色粗斜体的描述字段不加上，则能被win10识别，但是只有一个finger工作，不能10点触摸。
如果加上上述字段，则win10无法识别设备。
