Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

features/unsupported/USBHost/USBHostHID/USBHostKeyboard.cpp@1:3deb71413561, 2017-07-20 (annotated)

Committer:
xuaner
Date:
Thu Jul 20 14:26:57 2017 +0000
Revision:
1:3deb71413561
Parent:
0:f269e3021894 
mbed_os

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /* mbed USBHost Library
elessair 0:f269e3021894 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16
elessair 0:f269e3021894 17 #include "USBHostKeyboard.h"
elessair 0:f269e3021894 18
elessair 0:f269e3021894 19 #if USBHOST_KEYBOARD
elessair 0:f269e3021894 20
elessair 0:f269e3021894 21 static uint8_t keymap[4][0x39] = {
elessair 0:f269e3021894 22 { 0, 0, 0, 0, 'a', 'b' /*0x05*/,
elessair 0:f269e3021894 23 'c', 'd', 'e', 'f', 'g' /*0x0a*/,
elessair 0:f269e3021894 24 'h', 'i', 'j', 'k', 'l'/*0x0f*/,
elessair 0:f269e3021894 25 'm', 'n', 'o', 'p', 'q'/*0x14*/,
elessair 0:f269e3021894 26 'r', 's', 't', 'u', 'v'/*0x19*/,
elessair 0:f269e3021894 27 'w', 'x', 'y', 'z', '1'/*0x1E*/,
elessair 0:f269e3021894 28 '2', '3', '4', '5', '6'/*0x23*/,
elessair 0:f269e3021894 29 '7', '8', '9', '0', 0x0A /*enter*/, /*0x28*/
elessair 0:f269e3021894 30 0x1B /*escape*/, 0x08 /*backspace*/, 0x09/*tab*/, 0x20/*space*/, '-', /*0x2d*/
elessair 0:f269e3021894 31 '=', '[', ']', '\\', '#', /*0x32*/
elessair 0:f269e3021894 32 ';', '\'', 0, ',', '.', /*0x37*/
elessair 0:f269e3021894 33 '/'},
elessair 0:f269e3021894 34
elessair 0:f269e3021894 35 /* CTRL MODIFIER */
elessair 0:f269e3021894 36 { 0, 0, 0, 0, 0, 0 /*0x05*/,
elessair 0:f269e3021894 37 0, 0, 0, 0, 0 /*0x0a*/,
elessair 0:f269e3021894 38 0, 0, 0, 0, 0/*0x0f*/,
elessair 0:f269e3021894 39 0, 0, 0, 0, 0/*0x14*/,
elessair 0:f269e3021894 40 0, 0, 0, 0, 0/*0x19*/,
elessair 0:f269e3021894 41 0, 0, 0, 0, 0/*0x1E*/,
elessair 0:f269e3021894 42 0, 0, 0, 0, 0/*0x23*/,
elessair 0:f269e3021894 43 0, 0, 0, 0, 0 /*enter*/, /*0x28*/
elessair 0:f269e3021894 44 0, 0, 0, 0, 0, /*0x2d*/
elessair 0:f269e3021894 45 0, 0, 0, 0, 0, /*0x32*/
elessair 0:f269e3021894 46 0, 0, 0, 0, 0, /*0x37*/
elessair 0:f269e3021894 47 0},
elessair 0:f269e3021894 48
elessair 0:f269e3021894 49 /* SHIFT MODIFIER */
elessair 0:f269e3021894 50 { 0, 0, 0, 0, 'A', 'B' /*0x05*/,
elessair 0:f269e3021894 51 'C', 'D', 'E', 'F', 'G' /*0x0a*/,
elessair 0:f269e3021894 52 'H', 'I', 'J', 'K', 'L'/*0x0f*/,
elessair 0:f269e3021894 53 'M', 'N', 'O', 'P', 'Q'/*0x14*/,
elessair 0:f269e3021894 54 'R', 'S', 'T', 'U', 'V'/*0x19*/,
elessair 0:f269e3021894 55 'W', 'X', 'Y', 'Z', '!'/*0x1E*/,
elessair 0:f269e3021894 56 '@', '#', '$', '%', '^'/*0x23*/,
elessair 0:f269e3021894 57 '&', '*', '(', ')', 0, /*0x28*/
elessair 0:f269e3021894 58 0, 0, 0, 0, 0, /*0x2d*/
elessair 0:f269e3021894 59 '+', '{', '}', '|', '~', /*0x32*/
elessair 0:f269e3021894 60 ':', '"', 0, '<', '>', /*0x37*/
elessair 0:f269e3021894 61 '?'},
elessair 0:f269e3021894 62
elessair 0:f269e3021894 63 /* ALT MODIFIER */
elessair 0:f269e3021894 64 { 0, 0, 0, 0, 0, 0 /*0x05*/,
elessair 0:f269e3021894 65 0, 0, 0, 0, 0 /*0x0a*/,
elessair 0:f269e3021894 66 0, 0, 0, 0, 0/*0x0f*/,
elessair 0:f269e3021894 67 0, 0, 0, 0, 0/*0x14*/,
elessair 0:f269e3021894 68 0, 0, 0, 0, 0/*0x19*/,
elessair 0:f269e3021894 69 0, 0, 0, 0, 0/*0x1E*/,
elessair 0:f269e3021894 70 0, 0, 0, 0, 0/*0x23*/,
elessair 0:f269e3021894 71 0, 0, 0, 0, 0 /*enter*/, /*0x28*/
elessair 0:f269e3021894 72 0, 0, 0, 0, 0, /*0x2d*/
elessair 0:f269e3021894 73 0, 0, 0, 0, 0, /*0x32*/
elessair 0:f269e3021894 74 0, 0, 0, 0, 0, /*0x37*/
elessair 0:f269e3021894 75 0}
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77 };
elessair 0:f269e3021894 78
elessair 0:f269e3021894 79
elessair 0:f269e3021894 80 USBHostKeyboard::USBHostKeyboard() {
elessair 0:f269e3021894 81 host = USBHost::getHostInst();
elessair 0:f269e3021894 82 init();
elessair 0:f269e3021894 83 }
elessair 0:f269e3021894 84
elessair 0:f269e3021894 85
elessair 0:f269e3021894 86 void USBHostKeyboard::init() {
elessair 0:f269e3021894 87 dev = NULL;
elessair 0:f269e3021894 88 int_in = NULL;
elessair 0:f269e3021894 89 report_id = 0;
elessair 0:f269e3021894 90 onKey = NULL;
elessair 0:f269e3021894 91 onKeyCode = NULL;
elessair 0:f269e3021894 92 dev_connected = false;
elessair 0:f269e3021894 93 keyboard_intf = -1;
elessair 0:f269e3021894 94 keyboard_device_found = false;
elessair 0:f269e3021894 95 }
elessair 0:f269e3021894 96
elessair 0:f269e3021894 97 bool USBHostKeyboard::connected() {
elessair 0:f269e3021894 98 return dev_connected;
elessair 0:f269e3021894 99 }
elessair 0:f269e3021894 100
elessair 0:f269e3021894 101
elessair 0:f269e3021894 102 bool USBHostKeyboard::connect() {
elessair 0:f269e3021894 103
elessair 0:f269e3021894 104 if (dev_connected) {
elessair 0:f269e3021894 105 return true;
elessair 0:f269e3021894 106 }
elessair 0:f269e3021894 107
elessair 0:f269e3021894 108 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
elessair 0:f269e3021894 109 if ((dev = host->getDevice(i)) != NULL) {
elessair 0:f269e3021894 110
elessair 0:f269e3021894 111 if (host->enumerate(dev, this))
elessair 0:f269e3021894 112 break;
elessair 0:f269e3021894 113
elessair 0:f269e3021894 114 if (keyboard_device_found) {
elessair 0:f269e3021894 115 int_in = dev->getEndpoint(keyboard_intf, INTERRUPT_ENDPOINT, IN);
elessair 0:f269e3021894 116
elessair 0:f269e3021894 117 if (!int_in)
elessair 0:f269e3021894 118 break;
elessair 0:f269e3021894 119
elessair 0:f269e3021894 120 USB_INFO("New Keyboard device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, keyboard_intf);
elessair 0:f269e3021894 121 dev->setName("Keyboard", keyboard_intf);
elessair 0:f269e3021894 122 host->registerDriver(dev, keyboard_intf, this, &USBHostKeyboard::init);
elessair 0:f269e3021894 123
elessair 0:f269e3021894 124 int_in->attach(this, &USBHostKeyboard::rxHandler);
elessair 0:f269e3021894 125 host->interruptRead(dev, int_in, report, int_in->getSize(), false);
elessair 0:f269e3021894 126
elessair 0:f269e3021894 127 dev_connected = true;
elessair 0:f269e3021894 128 return true;
elessair 0:f269e3021894 129 }
elessair 0:f269e3021894 130 }
elessair 0:f269e3021894 131 }
elessair 0:f269e3021894 132 init();
elessair 0:f269e3021894 133 return false;
elessair 0:f269e3021894 134 }
elessair 0:f269e3021894 135
elessair 0:f269e3021894 136 void USBHostKeyboard::rxHandler() {
elessair 0:f269e3021894 137 int len = int_in->getLengthTransferred();
elessair 0:f269e3021894 138 int index = (len == 9) ? 1 : 0;
elessair 0:f269e3021894 139 int len_listen = int_in->getSize();
elessair 0:f269e3021894 140 uint8_t key = 0;
elessair 0:f269e3021894 141 if (len == 8 || len == 9) {
elessair 0:f269e3021894 142 uint8_t modifier = (report[index] == 4) ? 3 : report[index];
elessair 0:f269e3021894 143 len_listen = len;
elessair 0:f269e3021894 144 key = keymap[modifier][report[index + 2]];
elessair 0:f269e3021894 145 if (key && onKey) {
elessair 0:f269e3021894 146 (*onKey)(key);
elessair 0:f269e3021894 147 }
elessair 0:f269e3021894 148 if ((report[index + 2] || modifier) && onKeyCode) {
elessair 0:f269e3021894 149 (*onKeyCode)(report[index + 2], modifier);
elessair 0:f269e3021894 150 }
elessair 0:f269e3021894 151 }
elessair 0:f269e3021894 152 if (dev && int_in)
elessair 0:f269e3021894 153 host->interruptRead(dev, int_in, report, len_listen, false);
elessair 0:f269e3021894 154 }
elessair 0:f269e3021894 155
elessair 0:f269e3021894 156 /*virtual*/ void USBHostKeyboard::setVidPid(uint16_t vid, uint16_t pid)
elessair 0:f269e3021894 157 {
elessair 0:f269e3021894 158 // we don't check VID/PID for keyboard driver
elessair 0:f269e3021894 159 }
elessair 0:f269e3021894 160
elessair 0:f269e3021894 161 /*virtual*/ bool USBHostKeyboard::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
elessair 0:f269e3021894 162 {
elessair 0:f269e3021894 163 if ((keyboard_intf == -1) &&
elessair 0:f269e3021894 164 (intf_class == HID_CLASS) &&
elessair 0:f269e3021894 165 (intf_subclass == 0x01) &&
elessair 0:f269e3021894 166 (intf_protocol == 0x01)) {
elessair 0:f269e3021894 167 keyboard_intf = intf_nb;
elessair 0:f269e3021894 168 return true;
elessair 0:f269e3021894 169 }
elessair 0:f269e3021894 170 return false;
elessair 0:f269e3021894 171 }
elessair 0:f269e3021894 172
elessair 0:f269e3021894 173 /*virtual*/ bool USBHostKeyboard::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
elessair 0:f269e3021894 174 {
elessair 0:f269e3021894 175 if (intf_nb == keyboard_intf) {
elessair 0:f269e3021894 176 if (type == INTERRUPT_ENDPOINT && dir == IN) {
elessair 0:f269e3021894 177 keyboard_device_found = true;
elessair 0:f269e3021894 178 return true;
elessair 0:f269e3021894 179 }
elessair 0:f269e3021894 180 }
elessair 0:f269e3021894 181 return false;
elessair 0:f269e3021894 182 }
elessair 0:f269e3021894 183
elessair 0:f269e3021894 184 #endif