Diff: USBHost/USBHostHID/USBHostMouse.cpp

Revision:

1:0dac72ab5910

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost/USBHostHID/USBHostMouse.cpp	Wed Jun 05 04:54:37 2019 +0000
@@ -0,0 +1,174 @@
+/* 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 "USBHostMouse.h"
+
+#if USBHOST_MOUSE
+
+USBHostMouse::USBHostMouse()
+{
+    host = USBHost::getHostInst();
+    init();
+}
+
+void USBHostMouse::init()
+{
+    dev = NULL;
+    int_in = NULL;
+    onUpdate = NULL;
+    onButtonUpdate = NULL;
+    onXUpdate = NULL;
+    onYUpdate = NULL;
+    onZUpdate = NULL;
+    report_id = 0;
+    dev_connected = false;
+    mouse_device_found = false;
+    mouse_intf = -1;
+
+    buttons = 0;
+    x = 0;
+    y = 0;
+    z = 0;
+}
+
+bool USBHostMouse::connected()
+{
+    return dev_connected;
+}
+
+bool USBHostMouse::connect()
+{
+    int len_listen;
+
+    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 (mouse_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(mouse_intf, INTERRUPT_ENDPOINT, IN);
+                    if (!int_in) {
+                        break;
+                    }
+
+                    USB_INFO("New Mouse device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, mouse_intf);
+                    dev->setName("Mouse", mouse_intf);
+                    host->registerDriver(dev, mouse_intf, this, &USBHostMouse::init);
+
+                    int_in->attach(this, &USBHostMouse::rxHandler);
+                    len_listen = int_in->getSize();
+                    if (len_listen > sizeof(report)) {
+                        len_listen = sizeof(report);
+                    }
+                }
+                int ret=host->interruptRead(dev, int_in, report, len_listen, false);
+                MBED_ASSERT((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING) || (ret == USB_TYPE_FREE));
+                if ((ret==USB_TYPE_OK) || (ret ==USB_TYPE_PROCESSING)) {
+                    dev_connected = true;
+                }
+                if (ret == USB_TYPE_FREE) {
+                    dev_connected = false;
+                }
+                return true;
+            }
+        }
+    }
+    init();
+    return false;
+}
+
+void USBHostMouse::rxHandler()
+{
+    int len_listen = int_in->getLengthTransferred();
+    if (len_listen !=0) {
+
+        if (onUpdate) {
+            (*onUpdate)(report[0] & 0x07, report[1], report[2], report[3]);
+        }
+
+        if (onButtonUpdate && (buttons != (report[0] & 0x07))) {
+            (*onButtonUpdate)(report[0] & 0x07);
+        }
+
+        if (onXUpdate && (x != report[1])) {
+            (*onXUpdate)(report[1]);
+        }
+
+        if (onYUpdate && (y != report[2])) {
+            (*onYUpdate)(report[2]);
+        }
+
+        if (onZUpdate && (z != report[3])) {
+            (*onZUpdate)(report[3]);
+        }
+
+        // update mouse state
+        buttons = report[0] & 0x07;
+        x = report[1];
+        y = report[2];
+        z = report[3];
+    }
+    /*  set again the maximum value */
+    len_listen = int_in->getSize();
+
+    if (len_listen > sizeof(report)) {
+        len_listen = sizeof(report);
+    }
+
+    if (dev) {
+        host->interruptRead(dev, int_in, report, len_listen, false);
+    }
+}
+
+/*virtual*/ void USBHostMouse::setVidPid(uint16_t vid, uint16_t pid)
+{
+    // we don't check VID/PID for mouse driver
+}
+
+/*virtual*/ bool USBHostMouse::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 ((mouse_intf == -1) &&
+            (intf_class == HID_CLASS) &&
+            (intf_subclass == 0x01) &&
+            (intf_protocol == 0x02)) {
+        mouse_intf = intf_nb;
+        return true;
+    }
+    return false;
+}
+
+/*virtual*/ bool USBHostMouse::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
+{
+    if (intf_nb == mouse_intf) {
+        if (type == INTERRUPT_ENDPOINT && dir == IN) {
+            mouse_device_found = true;
+            return true;
+        }
+    }
+    return false;
+}
+
+#endif