| /** | |
| * \file | |
| * | |
| * \brief USB Otg drivers | |
| * Compliance with common driver OTG. | |
| * | |
| * Copyright (C) 2009 Atmel Corporation. All rights reserved. | |
| * | |
| * \page License | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions are met: | |
| * | |
| * 1. Redistributions of source code must retain the above copyright notice, | |
| * this list of conditions and the following disclaimer. | |
| * | |
| * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| * this list of conditions and the following disclaimer in the documentation | |
| * and/or other materials provided with the distribution. | |
| * | |
| * 3. The name of Atmel may not be used to endorse or promote products derived | |
| * from this software without specific prior written permission. | |
| * | |
| * 4. This software may only be redistributed and used in connection with an | |
| * Atmel AVR product. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED | |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
| * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR | |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
| * DAMAGE. | |
| */ | |
| #include "conf_usb.h" | |
| #include "sysclk.h" | |
| #include "udd.h" | |
| #include "usbc_otg.h" | |
| #include <string.h> | |
| #ifndef UDD_USB_INT_LEVEL | |
| # define UDD_USB_INT_LEVEL 0 // By default USB interrupt have low priority | |
| #endif | |
| #ifdef OTG | |
| /** | |
| * \ingroup usb_group | |
| * \defgroup otg_group USB OTG Driver (OTG) | |
| * @{ | |
| */ | |
| //! Check that multiplexed pin used for USB_ID is defined | |
| #ifndef OTG_ID | |
| #error YOU MUST define in your board header file the multiplexed pin used for OTG_ID as AVR32_USBC_USB_ID_x_x | |
| #endif | |
| /** | |
| * \internal | |
| * \brief The USBC ISR is managed by OTG layer which call the USB mode actived (device/host). | |
| */ | |
| ISR(otg_interrupt, AVR32_USBC_IRQ_GROUP, USB_INT_LEVEL) | |
| { | |
| if (Is_otg_id_transition() && Is_otg_id_interrupt_enabled()) { | |
| // UID pin change | |
| otg_ack_id_transition(); | |
| USB_UID_EVENT(Is_otg_id_device()); | |
| return; | |
| } | |
| // Call sub interrrupt routine correesponding at current mode | |
| if (Is_otg_id_device()) | |
| udd_interrupt(); | |
| else | |
| uhd_interrupt(); | |
| } | |
| //@} | |
| void otg_enable(void) | |
| { | |
| // Link the USBC interrupt on otg_interrupt() | |
| irq_register_handler(otg_interrupt, AVR32_USBC_IRQ, UDD_USB_INT_LEVEL); | |
| // Enable UID control | |
| otg_input_id_pin(); | |
| otg_enable_id_pin(); | |
| otg_raise_id_transition(); // Check no ID transition has been missed during initialization | |
| otg_enable_id_interrupt(); | |
| } | |
| //@} | |
| #endif // define OTG |