›SensorTile实现无线触摸屏 蓝牙HID
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本帖最后由 kangear 于 2018-7-20 23:04 编辑 @littleshrimp 的HID帖子实现的，最近一直查看相关资料，总算整明白了。基于SensorTile实现了无线触摸屏，目前自动从左上角点击滑动到右下角。 1. 目前实现的是单点触摸，后续会实现多点触摸； 2. 参考文档比较多，@littleshrimp 版主的 空中飞鼠 帖子，微软的描述符文章，Android文章https://source.android.com/devices/input/touch-devices 最终实现了，不容易，真不容易。先发一个图得瑟一下，后续再整理详细的文章，我对Android底层开发熟悉一些，有相关问题可以咨询的。 个人技术博客： https://blog.csdn.net/kangear
这里 的这个描述符稍微精简一下就可以了。最终如下： 0x05, 0x0d, // USAGE_PAGE (Digitizers) 0x09, 0x04, // USAGE (Touch Screen) 0xa1, 0x01, // COLLECTION (Application) 0x85, 0x01, // REPORT_ID (Touch) (REPORTID_TOUCH is 1) 0x09, 0x20, // USAGE (Stylus) 0xa1, 0x00, // COLLECTION (Physical) 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) 0x95, 0x03, // REPORT_COUNT (3) 0x81, 0x03, // INPUT (Cnst,Ary,Abs) /* 0x09, 0x32, // USAGE (In Range) 0x09, 0x47, // USAGE (Confidence) 0x95, 0x02, // REPORT_COUNT (2) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x95, 0x0a, // REPORT_COUNT (10) 0x81, 0x03, // INPUT (Cnst,Ary,Abs) */ 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767) 0x75, 0x10, // REPORT_SIZE (16) 0x95, 0x01, // REPORT_COUNT (1) 0xa4, // PUSH 0x55, 0x0d, // UNIT_EXPONENT (-3) 0x65, 0x00, // UNIT (None) 0x09, 0x30, // USAGE (X) 0x35, 0x00, // PHYSICAL_MINIMUM (0) 0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x09, 0x31, // USAGE (Y) 0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0) 0x81, 0x02, // INPUT (Data,Var,Abs) 0xb4, // POP /* 0x05, 0x0d, // USAGE PAGE (Digitizers) 0x09, 0x48, // USAGE (Width) 0x09, 0x49, // USAGE (Height) 0x95, 0x02, // REPORT_COUNT (2) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x95, 0x01, // REPORT_COUNT (1) 0x81, 0x03, // INPUT (Cnst,Ary,Abs) */ 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION 复制代码 static int8_t ipRepVal[REPORT_IP_LEN_0] = {0}; /* static int8_t cnt = 0; if(cnt == 0) { ipRepVal[1] = MOUSE_OFFSET_X; ipRepVal[2] = MOUSE_OFFSET_Y; cnt++; } else { ipRepVal[1] = -MOUSE_OFFSET_X; ipRepVal[2] = -MOUSE_OFFSET_Y; cnt--; } */ ipRepVal[1] = 0x01; // down if (abs_hor < 32760) { abs_hor += 20; abs_ver += 20; } else { ipRepVal[1] = 0x00; // up } ipRepVal[0] = 0x01; // Report ID ipRepVal[2] = abs_hor%256; ipRepVal[3] = abs_hor/256; ipRepVal[4] = abs_ver%256; ipRepVal[5] = abs_ver/256; HidDevice_Update_Input_Report(0,0,REPORT_IP_LEN_0,ipRepVal); if (ipRepVal[1] == 0x00) { abs_hor = 0; abs_ver = 0; } 复制代码 # Copyright (C) 2010 The Android Open Source Project # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # [url=http://www.apache.org/licenses/LICENSE-2.0]http://www.apache.org/licenses/LICENSE-2.0[/url] # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Input Device Calibration File for the touch screen. # # Basic Parameters touch.deviceType = touchScreen #touch.orientationAware = 1 # Size # Based on empirical measurements, we estimate the size of the contact # using size = sqrt(area) * 43 + 0. #touch.size.calibration = area #touch.size.scale = 6 #touch.size.bias = 0 #touch.size.isSummed = 0 # Pressure # Driver reports signal strength as pressure. # # A normal thumb touch typically registers about 80 signal strength # units although we don't expect these values to be accurate. #touch.pressure.calibration = amplitude #touch.pressure.scale = 0.0125 # # Orientation #touch.orientation.calibration = none 复制代码
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