Diff: USBHost/USBHostHID/USBHostKeyboard.cpp

Revision:

1:0dac72ab5910

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost/USBHostHID/USBHostKeyboard.cpp	Wed Jun 05 04:54:37 2019 +0000
@@ -0,0 +1,207 @@
+/* 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) {
+                {
+                    /* As this is done in a specific thread
+                     * this lock is taken to avoid to process the device
+                     * disconnect in usb process during the device registering */
+                    USBHost::Lock  Lock(host);
+
+                    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