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Diff: features/unsupported/USBHost/USBHostHID/USBHostKeyboard.cpp
- Revision:
- 0:f269e3021894
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/features/unsupported/USBHost/USBHostHID/USBHostKeyboard.cpp Sun Oct 23 15:10:02 2016 +0000 @@ -0,0 +1,184 @@ +/* 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