This is a work in progress. Trying to make a working arcade button to USB interface with the Nucleo F411RE.
USBGamepad.cpp
00001 /* Copyright (c) 2010-2011 mbed.org, MIT License 00002 * Modified Mouse code for Joystick - WH 2012 00003 * Modified for RetroPie MW 2016 00004 * 00005 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 00006 * and associated documentation files (the "Software"), to deal in the Software without 00007 * restriction, including without limitation the rights to use, copy, modify, merge, publish, 00008 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the 00009 * Software is furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in all copies or 00012 * substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 00015 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00016 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 00017 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00018 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00019 */ 00020 00021 #include "stdint.h" 00022 #include "USBGamepad.h" 00023 00024 00025 00026 bool USBGamepad::update(uint32_t buttons) 00027 { 00028 _buttonsP1 = (uint16_t)(buttons & 0xffff); 00029 _buttonsP2 = (uint16_t)((buttons >> 16) & 0xffff); 00030 return update(); 00031 } 00032 00033 bool USBGamepad::update() 00034 { 00035 HID_REPORT report; 00036 00037 // Fill the report according to the Gamepad Descriptor 00038 00039 #define put(idx, val) (report.data[idx] = (val) & 0xff, report.data[(idx)+1] = ((val) >> 8) & 0xff) 00040 00041 report.data[0] = 0x01; //Report id 1 00042 put(1, _buttonsP1); // 0..1 2 bytes 00043 00044 send(&report); 00045 00046 report.data[0] = 0x02; //Report id 2 00047 put(1, _buttonsP1); 00048 00049 send(&report); 00050 00051 put(2, _buttonsP2);// 2..3 2 bytes, 32 buttons 00052 00053 // important: keep reportLen in sync with the actual byte length of 00054 // the reports we build here 00055 report.length = REPORT_LEN; 00056 00057 // send the report 00058 return sendNB(&report); 00059 } 00060 00061 bool USBGamepad::buttons(uint32_t buttons) 00062 { 00063 _buttonsP1 = (uint16_t)(buttons & 0xffff); 00064 _buttonsP2 = (uint16_t)((buttons >> 16) & 0xffff); 00065 return update(); 00066 } 00067 00068 00069 void USBGamepad::_init() { 00070 00071 _buttonsP1 = 0x0000; // 16 buttons 00072 _buttonsP2 = 0x0000; // 16 buttons 00073 00074 } 00075 00076 00077 uint8_t * USBGamepad::reportDesc() 00078 { 00079 00080 static const uint8_t reportDescriptor[27] = { 00081 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 00082 0x09, 0x05, // USAGE (Game Pad) 00083 0xa1, 0x01, // COLLECTION (Application) 00084 0xa1, 0x00, // COLLECTION (Physical) 00085 0x85, 0x01, // REPORT_ID (1) 00086 0x05, 0x09, // USAGE_PAGE (Button) 00087 0x19, 0x01, // USAGE_MINIMUM (Button 1) 00088 0x29, 0x10, // USAGE_MAXIMUM (Button 16) 00089 0x15, 0x00, // LOGICAL_MINIMUM (0) 00090 0x25, 0x01, // LOGICAL_MAXIMUM (1) 00091 0x75, 0x01, // REPORT_SIZE (1) 00092 0x95, 0x10, // REPORT_COUNT (16) 00093 0x81, 0x02, // INPUT (Data,Var,Abs) 00094 0xc0 // END_COLLECTION 00095 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 00096 0x09, 0x05, // USAGE (Game Pad) 00097 0xa1, 0x01, // COLLECTION (Application) 00098 0xa1, 0x00, // COLLECTION (Physical) 00099 0x85, 0x02, // REPORT_ID (2) 00100 0x05, 0x09, // USAGE_PAGE (Button) 00101 0x19, 0x01, // USAGE_MINIMUM (Button 1) 00102 0x29, 0x10, // USAGE_MAXIMUM (Button 16) 00103 0x15, 0x00, // LOGICAL_MINIMUM (0) 00104 0x25, 0x01, // LOGICAL_MAXIMUM (1) 00105 0x75, 0x01, // REPORT_SIZE (1) 00106 0x95, 0x10, // REPORT_COUNT (16) 00107 0x81, 0x02, // INPUT (Data,Var,Abs) 00108 0xc0 // END_COLLECTION 00109 }; 00110 00111 reportLength = sizeof(reportDescriptor); 00112 return reportDescriptor; 00113 } 00114 00115 uint8_t * USBGamepad::stringImanufacturerDesc() { 00116 static uint8_t stringImanufacturerDescriptor[] = { 00117 0x15, /*bLength*/ 00118 STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ 00119 't',0,'h',0,'e',0,'t',0,'a',0,'z',0,'z',0,'b',0,'o',0,'t',0 /*bString iManufacturer - mjrcorp*/ 00120 }; 00121 return stringImanufacturerDescriptor; 00122 } 00123 00124 uint8_t * USBGamepad::stringIserialDesc() { 00125 static uint8_t stringIserialDescriptor[] = { 00126 0x16, /*bLength*/ 00127 STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ 00128 '0',0,'1',0,'2',0,'3',0,'4',0,'5',0,'6',0,'7',0,'8',0,'9',0, /*bString iSerial - 0123456789*/ 00129 }; 00130 return stringIserialDescriptor; 00131 } 00132 00133 uint8_t * USBGamepad::stringIproductDesc() { 00134 static uint8_t stringIproductDescriptor[] = { 00135 0x1E, /*bLength*/ 00136 STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ 00137 'A',0,'r',0,'c',0,'a',0,'d',0,'e',0,' ',0,'G',0, 00138 'a',0,'m',0,'e',0,'p',0,'a',0,'d',0 /*String iProduct */ 00139 }; 00140 return stringIproductDescriptor; 00141 }
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