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- /* mbed USBHost Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * 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
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * 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.
- */
-
- #include "USBHostKeyboard.h"
-
- #if USBHOST_KEYBOARD
-
- static uint8_t keymap[4][0x39] = {
- { 0, 0, 0, 0, 'a', 'b' /*0x05*/,
- 'c', 'd', 'e', 'f', 'g' /*0x0a*/,
- 'h', 'i', 'j', 'k', 'l'/*0x0f*/,
- 'm', 'n', 'o', 'p', 'q'/*0x14*/,
- 'r', 's', 't', 'u', 'v'/*0x19*/,
- 'w', 'x', 'y', 'z', '1'/*0x1E*/,
- '2', '3', '4', '5', '6'/*0x23*/,
- '7', '8', '9', '0', 0x0A /*enter*/, /*0x28*/
- 0x1B /*escape*/, 0x08 /*backspace*/, 0x09/*tab*/, 0x20/*space*/, '-', /*0x2d*/
- '=', '[', ']', '\\', '#', /*0x32*/
- ';', '\'', 0, ',', '.', /*0x37*/
- '/'},
-
- /* CTRL MODIFIER */
- { 0, 0, 0, 0, 0, 0 /*0x05*/,
- 0, 0, 0, 0, 0 /*0x0a*/,
- 0, 0, 0, 0, 0/*0x0f*/,
- 0, 0, 0, 0, 0/*0x14*/,
- 0, 0, 0, 0, 0/*0x19*/,
- 0, 0, 0, 0, 0/*0x1E*/,
- 0, 0, 0, 0, 0/*0x23*/,
- 0, 0, 0, 0, 0 /*enter*/, /*0x28*/
- 0, 0, 0, 0, 0, /*0x2d*/
- 0, 0, 0, 0, 0, /*0x32*/
- 0, 0, 0, 0, 0, /*0x37*/
- 0},
-
- /* SHIFT MODIFIER */
- { 0, 0, 0, 0, 'A', 'B' /*0x05*/,
- 'C', 'D', 'E', 'F', 'G' /*0x0a*/,
- 'H', 'I', 'J', 'K', 'L'/*0x0f*/,
- 'M', 'N', 'O', 'P', 'Q'/*0x14*/,
- 'R', 'S', 'T', 'U', 'V'/*0x19*/,
- 'W', 'X', 'Y', 'Z', '!'/*0x1E*/,
- '@', '#', '$', '%', '^'/*0x23*/,
- '&', '*', '(', ')', 0, /*0x28*/
- 0, 0, 0, 0, 0, /*0x2d*/
- '+', '{', '}', '|', '~', /*0x32*/
- ':', '"', 0, '<', '>', /*0x37*/
- '?'},
-
- /* ALT MODIFIER */
- { 0, 0, 0, 0, 0, 0 /*0x05*/,
- 0, 0, 0, 0, 0 /*0x0a*/,
- 0, 0, 0, 0, 0/*0x0f*/,
- 0, 0, 0, 0, 0/*0x14*/,
- 0, 0, 0, 0, 0/*0x19*/,
- 0, 0, 0, 0, 0/*0x1E*/,
- 0, 0, 0, 0, 0/*0x23*/,
- 0, 0, 0, 0, 0 /*enter*/, /*0x28*/
- 0, 0, 0, 0, 0, /*0x2d*/
- 0, 0, 0, 0, 0, /*0x32*/
- 0, 0, 0, 0, 0, /*0x37*/
- 0}
-
- };
-
-
- USBHostKeyboard::USBHostKeyboard() {
- host = USBHost::getHostInst();
- init();
- }
-
-
- void USBHostKeyboard::init() {
- dev = NULL;
- int_in = NULL;
- report_id = 0;
- onKey = NULL;
- onKeyCode = NULL;
- dev_connected = false;
- keyboard_intf = -1;
- keyboard_device_found = false;
- }
-
- bool USBHostKeyboard::connected() {
- return dev_connected;
- }
-
-
- bool USBHostKeyboard::connect() {
-
- if (dev_connected) {
- return true;
- }
-
- for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
- if ((dev = host->getDevice(i)) != NULL) {
-
- if (host->enumerate(dev, this))
- break;
-
- if (keyboard_device_found) {
- int_in = dev->getEndpoint(keyboard_intf, INTERRUPT_ENDPOINT, IN);
-
- if (!int_in)
- break;
-
- USB_INFO("New Keyboard device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, keyboard_intf);
- dev->setName("Keyboard", keyboard_intf);
- host->registerDriver(dev, keyboard_intf, this, &USBHostKeyboard::init);
-
- int_in->attach(this, &USBHostKeyboard::rxHandler);
- host->interruptRead(dev, int_in, report, int_in->getSize(), false);
-
- dev_connected = true;
- return true;
- }
- }
- }
- init();
- return false;
- }
-
- void USBHostKeyboard::rxHandler() {
- int len = int_in->getLengthTransferred();
- int index = (len == 9) ? 1 : 0;
- int len_listen = int_in->getSize();
- uint8_t key = 0;
- if (len == 8 || len == 9) {
- uint8_t modifier = (report[index] == 4) ? 3 : report[index];
- len_listen = len;
- key = keymap[modifier][report[index + 2]];
- if (key && onKey) {
- (*onKey)(key);
- }
- if ((report[index + 2] || modifier) && onKeyCode) {
- (*onKeyCode)(report[index + 2], modifier);
- }
- }
- if (dev && int_in)
- host->interruptRead(dev, int_in, report, len_listen, false);
- }
-
- /*virtual*/ void USBHostKeyboard::setVidPid(uint16_t vid, uint16_t pid)
- {
- // we don't check VID/PID for keyboard driver
- }
-
- /*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
- {
- if ((keyboard_intf == -1) &&
- (intf_class == HID_CLASS) &&
- (intf_subclass == 0x01) &&
- (intf_protocol == 0x01)) {
- keyboard_intf = intf_nb;
- return true;
- }
- return false;
- }
-
- /*virtual*/ bool USBHostKeyboard::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
- {
- if (intf_nb == keyboard_intf) {
- if (type == INTERRUPT_ENDPOINT && dir == IN) {
- keyboard_device_found = true;
- return true;
- }
- }
- return false;
- }
-
- #endif
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