/* * This file is part of the libopenstm32 project. * * Copyright (C) 2010 Gareth McMullin * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include "usb_private.h" struct _usbd_device _usbd_device; uint8_t usbd_control_buffer[128] __attribute__((weak)); /** Main initialization entry point. * * Initialize the USB firmware library to implement the USB device described * by the descriptors provided. * * It is required that the 48MHz USB clock is already available. * * @param dev Pointer to USB Device descriptor. This must not be changed * while the device is in use. * @param conf Pointer to array of USB Configuration descriptors. These * must not be changed while the device is in use. The length * of this array is determined by the bNumConfigurations field * in the device descriptor. * @return Zero on success (currently cannot fail) */ int usbd_init(const struct usb_device_descriptor *dev, const struct usb_config_descriptor *conf, const char **strings) { _usbd_device.desc = dev; _usbd_device.config = conf; _usbd_device.strings = strings; _usbd_device.ctrl_buf = usbd_control_buffer; _usbd_device.ctrl_buf_len = sizeof(usbd_control_buffer); _usbd_hw_init(); _usbd_device.user_callback_ctr[0][USB_TRANSACTION_SETUP] = _usbd_control_setup; _usbd_device.user_callback_ctr[0][USB_TRANSACTION_OUT] = _usbd_control_out; _usbd_device.user_callback_ctr[0][USB_TRANSACTION_IN] = _usbd_control_in; return 0; } void usbd_register_reset_callback(void (*callback)(void)) { _usbd_device.user_callback_reset = callback; } void usbd_register_suspend_callback(void (*callback)(void)) { _usbd_device.user_callback_suspend = callback; } void usbd_register_resume_callback(void (*callback)(void)) { _usbd_device.user_callback_resume = callback; } void usbd_set_control_buffer_size(uint16_t size) { _usbd_device.ctrl_buf_len = size; } void _usbd_reset(void) { _usbd_device.current_address = 0; _usbd_device.current_config = 0; usbd_ep_setup(0, USB_ENDPOINT_ATTR_CONTROL, 64, NULL); _usbd_hw_set_address(0); if(_usbd_device.user_callback_reset) _usbd_device.user_callback_reset(); }