submit the first version usb device stack.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2344 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/drivers/usb/usbdevice/core/usbdevice.c

@@ -0,0 +1,86 @@
+/*
+ * File      : usbdevice.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2012-10-02     Yi Qiu      first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <rtservice.h>
+
+#define RT_USB_DEVICE_CDC
+
+const static char* ustring[] = 
+{
+    "Language",
+    "RT-Thread Team.",
+    "UDISK",
+    "12345678",
+    "Config",
+    "Interface",
+};
+
+rt_err_t rt_usb_device_init(const char* udc_name)
+{
+    rt_device_t udc;
+    udevice_t udevice;
+    uconfig_t cfg;
+    uclass_t cls;    
+
+    RT_ASSERT(udc_name != RT_NULL);
+
+    udc = rt_device_find(udc_name);
+    if(udc == RT_NULL)
+    {
+        rt_kprintf("can't find usb device controller %s\n", udc_name);
+        return -RT_ERROR;
+    }
+
+    /* create and startup usb device thread */
+    rt_usbd_core_init();
+
+    /* create a device object */
+    udevice = rt_usbd_device_create(ustring);
+    
+    /* set usb controller driver to the device */
+    rt_usbd_device_set_controller(udevice, (udcd_t)udc);
+
+    /* create a configuration object */
+    cfg = rt_usbd_config_create();
+
+#if defined RT_USB_DEVICE_MASS_STORAGE
+    /* create a mass storage class object */
+    cls = rt_usbd_class_mass_storage_create(udevice);    
+#elif defined RT_USB_DEVICE_CDC
+    /* create a cdc class object */
+    cls = rt_usbd_class_cdc_create(udevice);    
+#else
+    #error
+#endif
+
+    /* set device descriptor to the device */
+    rt_usbd_device_set_descriptor(udevice, cls->dev_desc);
+
+    /* add the mass storage class to the configuration */
+    rt_usbd_config_add_class(cfg, cls);
+    
+    /* add the configuration to the device */
+    rt_usbd_device_add_config(udevice, cfg);
+    
+    /* set default configuration to 1 */
+    rt_usbd_set_config(udevice, 1);
+
+    /* initialize usb device controller */
+    rt_device_init(udc);
+
+    return RT_EOK;
+}
+