/** | |
* \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 |