Witek Ewert / Mbed 2 deprecated frdmk22f-usbhid-4axis

4-axis USB controller for FPV sims, based on NXP FRDM-K22F

Dependencies:   mbed USBDevice

USBJoystick/USBJoystick.cpp@0:9f5a70453c7c, 2020-03-05 (annotated)

Committer:
wue
Date:
Thu Mar 05 20:57:25 2020 +0000
Revision:
0:9f5a70453c7c
???

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wue 0:9f5a70453c7c 1 /* mbed USBJoystick Library
wue 0:9f5a70453c7c 2 * Copyright (c) 2012, v01: Initial version, WH,
wue 0:9f5a70453c7c 3 * Modified USBMouse code ARM Limited.
wue 0:9f5a70453c7c 4 * (c) 2010-2011 mbed.org, MIT License
wue 0:9f5a70453c7c 5 * 2016, v02: Updated USBDevice Lib, Added waitForConnect, Updated 32 bits button
wue 0:9f5a70453c7c 6 *
wue 0:9f5a70453c7c 7 * Permission is hereby granted, free of charge, to any person obtaining a copy
wue 0:9f5a70453c7c 8 * of this software and associated documentation files (the "Software"), to deal
wue 0:9f5a70453c7c 9 * in the Software without restriction, inclumosig without limitation the rights
wue 0:9f5a70453c7c 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
wue 0:9f5a70453c7c 11 * copies of the Software, and to permit persons to whom the Software is
wue 0:9f5a70453c7c 12 * furnished to do so, subject to the following conditions:
wue 0:9f5a70453c7c 13 *
wue 0:9f5a70453c7c 14 * The above copyright notice and this permission notice shall be included in
wue 0:9f5a70453c7c 15 * all copies or substantial portions of the Software.
wue 0:9f5a70453c7c 16 *
wue 0:9f5a70453c7c 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
wue 0:9f5a70453c7c 18 * IMPLIED, INCLUmosiG BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
wue 0:9f5a70453c7c 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
wue 0:9f5a70453c7c 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
wue 0:9f5a70453c7c 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
wue 0:9f5a70453c7c 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
wue 0:9f5a70453c7c 23 * THE SOFTWARE.
wue 0:9f5a70453c7c 24 */
wue 0:9f5a70453c7c 25
wue 0:9f5a70453c7c 26
wue 0:9f5a70453c7c 27 #include "stdint.h"
wue 0:9f5a70453c7c 28 #include "USBJoystick.h"
wue 0:9f5a70453c7c 29
wue 0:9f5a70453c7c 30 bool USBJoystick::update(int16_t x, int16_t y, int16_t rx, int16_t ry) {
wue 0:9f5a70453c7c 31
wue 0:9f5a70453c7c 32 _x = x;
wue 0:9f5a70453c7c 33 _y = y;
wue 0:9f5a70453c7c 34 _rx = rx;
wue 0:9f5a70453c7c 35 _ry = ry;
wue 0:9f5a70453c7c 36
wue 0:9f5a70453c7c 37 return update();
wue 0:9f5a70453c7c 38 }
wue 0:9f5a70453c7c 39
wue 0:9f5a70453c7c 40 bool USBJoystick::update() {
wue 0:9f5a70453c7c 41 HID_REPORT report;
wue 0:9f5a70453c7c 42
wue 0:9f5a70453c7c 43 // Fill the report according to the Joystick Descriptor
wue 0:9f5a70453c7c 44 report.data[0] = _x & 0xff;
wue 0:9f5a70453c7c 45 report.data[1] = (_x >> 8) & 0xff;
wue 0:9f5a70453c7c 46 report.data[2] = _y & 0xff;
wue 0:9f5a70453c7c 47 report.data[3] = (_y >> 8) & 0xff;
wue 0:9f5a70453c7c 48 report.data[4] = _rx & 0xff;
wue 0:9f5a70453c7c 49 report.data[5] = (_rx >> 8) & 0xff;
wue 0:9f5a70453c7c 50 report.data[6] = _ry & 0xff;
wue 0:9f5a70453c7c 51 report.data[7] = (_ry >> 8) & 0xff;
wue 0:9f5a70453c7c 52 report.length = 8;
wue 0:9f5a70453c7c 53
wue 0:9f5a70453c7c 54 return send(&report);
wue 0:9f5a70453c7c 55 }
wue 0:9f5a70453c7c 56
wue 0:9f5a70453c7c 57 bool USBJoystick::move(int16_t x, int16_t y, int16_t rx, int16_t ry) {
wue 0:9f5a70453c7c 58 _x = x;
wue 0:9f5a70453c7c 59 _y = y;
wue 0:9f5a70453c7c 60 _rx = rx;
wue 0:9f5a70453c7c 61 _ry = ry;
wue 0:9f5a70453c7c 62 return update();
wue 0:9f5a70453c7c 63 }
wue 0:9f5a70453c7c 64
wue 0:9f5a70453c7c 65 void USBJoystick::_init() {
wue 0:9f5a70453c7c 66 _x = 0x0000;
wue 0:9f5a70453c7c 67 _y = 0x0000;
wue 0:9f5a70453c7c 68 _rx = 0x0000;
wue 0:9f5a70453c7c 69 _ry = 0x0000;
wue 0:9f5a70453c7c 70 }
wue 0:9f5a70453c7c 71
wue 0:9f5a70453c7c 72
wue 0:9f5a70453c7c 73 uint8_t * USBJoystick::reportDesc() {
wue 0:9f5a70453c7c 74 static uint8_t reportDescriptor[] = {
wue 0:9f5a70453c7c 75 // value in () is the number of bytes. These bytes follow the comma, least significant byte first
wue 0:9f5a70453c7c 76 // see USBHID_Types.h for more info
wue 0:9f5a70453c7c 77 USAGE_PAGE(1), 0x01, // Generic Desktop
wue 0:9f5a70453c7c 78 USAGE(1), 0x04, // Usage (Joystick)
wue 0:9f5a70453c7c 79 COLLECTION(1), 0x01, // Application
wue 0:9f5a70453c7c 80
wue 0:9f5a70453c7c 81 // 6 Axes of Joystick
wue 0:9f5a70453c7c 82 USAGE_PAGE(1), 0x01, // Generic Desktop
wue 0:9f5a70453c7c 83 USAGE(1), 0x01, // Usage (Pointer)
wue 0:9f5a70453c7c 84 COLLECTION(1), 0x00, // Physical
wue 0:9f5a70453c7c 85 USAGE(1), 0x30, // X
wue 0:9f5a70453c7c 86 USAGE(1), 0x31, // Y
wue 0:9f5a70453c7c 87 USAGE(1), 0x33, // RX
wue 0:9f5a70453c7c 88 USAGE(1), 0x34, // RY
wue 0:9f5a70453c7c 89 LOGICAL_MINIMUM(2), 0x00, 0x80, // -32768 (using 2's complement)
wue 0:9f5a70453c7c 90 LOGICAL_MAXIMUM(2), 0xff, 0x7f, // 32767 (0x7fff, least significant byte first)
wue 0:9f5a70453c7c 91 REPORT_SIZE(1), 0x10, // REPORT_SIZE describes the number of bits in this element (16, in this case)
wue 0:9f5a70453c7c 92 REPORT_COUNT(1), 0x04,
wue 0:9f5a70453c7c 93 INPUT(1), 0x02, // Data, Variable, Absolute
wue 0:9f5a70453c7c 94 END_COLLECTION(0),
wue 0:9f5a70453c7c 95 END_COLLECTION(0)
wue 0:9f5a70453c7c 96 };
wue 0:9f5a70453c7c 97
wue 0:9f5a70453c7c 98 reportLength = sizeof(reportDescriptor);
wue 0:9f5a70453c7c 99 return reportDescriptor;
wue 0:9f5a70453c7c 100 }