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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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