Revision 0:5311825d0590, committed 2017-12-20

Comitter:

abougouffa

Date:

Wed Dec 20 11:14:43 2017 +0000

Child:

1:b12dbbe77a8a

Commit message:

USBHostGamepad Library

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostGamepad.cpp	Wed Dec 20 11:14:43 2017 +0000
@@ -0,0 +1,147 @@
+/* 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 "USBHostGamepad.h"
+
+#if USBHOST_GAMEPAD
+
+USBHostGamepad::USBHostGamepad()
+{
+    host = USBHost::getHostInst();
+    init();
+}
+
+void USBHostGamepad::init()
+{
+    dev = NULL;
+    int_in = NULL;
+    onUpdate = NULL;
+    report_id = 0;
+    dev_connected = false;
+    gamepad_device_found = false;
+    gamepad_intf = -1;
+}
+
+bool USBHostGamepad::connected() {
+    return dev_connected;
+}
+
+bool USBHostGamepad::connect()
+{
+    int len_listen;
+
+    if (dev_connected) {
+        return true;
+    }
+
+    for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
+
+        if (dev = host->getDevice(i)) {
+            if(host->enumerate(dev, this)) {
+                break;
+            }
+            if (gamepad_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(gamepad_intf, INTERRUPT_ENDPOINT, IN);
+                    if (!int_in) {
+                        break;
+                    }
+
+                    USB_INFO("New Gamepad device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, gamepad_intf);
+                    dev->setName("Gamepad", gamepad_intf);
+                    host->registerDriver(dev, gamepad_intf, this, &USBHostGamepad::init);
+
+                    int_in->attach(this, &USBHostGamepad::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 USBHostGamepad::rxHandler()
+{
+    int len_listen = int_in->getLengthTransferred();
+
+    if (len_listen !=0) {
+        uint16_t buttons = 0x0;
+        if (onUpdate) {
+            buttons |= ((report[5] & 0xF0) >> 4) | (report[6] << 4);
+            (*onUpdate)(report[0], report[1], report[3], report[4], buttons);
+        }
+    }
+
+    /*  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 USBHostGamepad::setVidPid(uint16_t vid, uint16_t pid)
+{
+    // we don't check VID/PID for Gamepad driver
+    USB_INFO("VID: %X, PID: %X\n\r", vid, pid);
+}
+
+/*virtual*/ bool USBHostGamepad::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 ((gamepad_intf == -1) &&
+            (intf_class == HID_CLASS) &&
+            (intf_subclass == 0x00) &&
+            (intf_protocol == 0x00)) {
+        gamepad_intf = intf_nb;
+        return true;
+    }
+    return false;
+}
+
+/*virtual*/ bool USBHostGamepad::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
+{
+    if (intf_nb == gamepad_intf) {
+        if (type == INTERRUPT_ENDPOINT && dir == IN) {
+            gamepad_device_found = true;
+            return true;
+        }
+    }
+    return false;
+}
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostGamepad.h	Wed Dec 20 11:14:43 2017 +0000
@@ -0,0 +1,89 @@
+/* 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.
+ */
+
+#ifndef USBHOSTGAMEPAD_H
+#define USBHOSTGAMEPAD_H
+
+#include "USBHostConf.h"
+
+#define USBHOST_GAMEPAD 1
+
+#if USBHOST_GAMEPAD
+
+#include "USBHost.h"
+
+/**
+ * A class to communicate a USB Gamepad
+ */
+class USBHostGamepad : public IUSBEnumerator
+{
+public:
+
+    /**
+    * Constructor
+    */
+    USBHostGamepad();
+
+    /**
+     * Try to connect a Gamepad device
+     *
+     * @return true if connection was successful
+     */
+    bool connect();
+
+    /**
+    * Check if a Gamepad is connected
+    *
+    * @returns true if a Gamepad is connected
+    */
+    bool connected();
+
+    /**
+     * Attach a callback called when a Gamepad event is received
+     *
+     * @param ptr function pointer
+     */
+    inline void attachEvent(void (*ptr)(uint8_t x, uint8_t y, uint8_t z, uint8_t rz, uint16_t buttons))
+    {
+        if (ptr != NULL) {
+            onUpdate = ptr;
+        }
+    }
+
+protected:
+    //From IUSBEnumerator
+    virtual void setVidPid(uint16_t vid, uint16_t pid);
+    virtual bool 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
+    virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
+
+private:
+    USBHost * host;
+    USBDeviceConnected * dev;
+    USBEndpoint * int_in;
+    uint8_t report[8];
+    bool dev_connected;
+    bool gamepad_device_found;
+    int gamepad_intf;
+
+    void rxHandler();
+    void (*onUpdate)(uint8_t x, uint8_t y, uint8_t z, uint8_t rz, uint16_t buttons);
+    int report_id;
+    void init();
+};
+
+#endif
+
+#endif
\ No newline at end of file