Subversion Repositories openrisc_2011-10-31

/*This file has been prepared for Doxygen automatic documentation generation.*/

/*! \file *********************************************************************

 *

 * \brief FreeRTOS and lwIP example for AVR32 UC3.

 *

 * - Compiler:           GNU GCC for AVR32

 * - Supported devices:  All AVR32 devices can be used.

 * - AppNote:

 *

 * \author               Atmel Corporation: http://www.atmel.com \n

 *                       Support and FAQ: http://support.atmel.no/

 *

 *****************************************************************************/

/* Copyright (c) 2007, Atmel Corporation All rights reserved.

 *

 * 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.

 *

 * THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 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.

 */

/* Environment include files. */

#include <stdlib.h>

#include <string.h>

#include "pm.h"

#include "flashc.h"

/* Scheduler include files. */

#include "FreeRTOS.h"

#include "task.h"

/* Demo file headers. */

#include "partest.h"

#include "serial.h"

#include "ethernet.h"

#include "netif/etharp.h"

#include "flash.h"

/* Priority definitions for most of the tasks in the demo application. */

#define mainLED_TASK_PRIORITY     ( tskIDLE_PRIORITY + 1 )

#define mainETH_TASK_PRIORITY     ( tskIDLE_PRIORITY + 1 )

/* Baud rate used by the serial port tasks. */

#define mainCOM_BAUD_RATE      ( ( unsigned portLONG ) 57600 )

#define mainCOM_BUFFER_LEN     ( ( unsigned portLONG ) 70 )

/* An address in the internal Flash used to count resets.  This is used to check that

the demo application is not unexpectedly resetting. */

#define mainRESET_COUNT_ADDRESS     ( ( void * ) 0xC0000000 )

//!

//! \fn     main

//! \brief  start the software here

//!         1) Initialize the microcontroller and the shared hardware resources

//!         of the board.

//!         2) Launch the IP modules.

//!         3) Start FreeRTOS.

//! \return 42, which should never occur.

//! \note

//!

int main( void )

{

volatile avr32_pm_t* pm = &AVR32_PM;

        /* 1) Initialize the microcontroller and the shared hardware resources of the board. */

        /* Switch to external oscillator 0 */

        pm_switch_to_osc0( pm, FOSC0, OSC0_STARTUP );

        /* Setup PLL0 on OSC0, mul+1=16 ,divisor by 1, lockcount=16, ie. 12Mhzx16/1 = 192MHz output.

           Extra div by 2 => 96MHz */

        pm_pll_setup(pm,        /* volatile avr32_pm_t* pm */

                                0,               /* unsigned int pll */

                                15,             /* unsigned int mul */

                                1,              /* unsigned int div, Sel Osc0/PLL0 or Osc1/Pll1 */

                                0,               /* unsigned int osc */

                                16);            /* unsigned int lockcount */

        pm_pll_set_option( pm, 0,   // pll0

                               0,   // Choose the range 160-240MHz.

                               1,   // div2

        /* Enable PLL0 */

        pm_pll_enable(pm,0);

        /* Wait for PLL0 locked */

        pm_wait_for_pll0_locked(pm) ;

        /* Setup generic clock number 2 on PLL, with OSC0/PLL0, no divisor */

        pm_gc_setup(pm,

                                0,

                                1, /* Use Osc (=0) or PLL (=1) */

                                0, /* Sel Osc0/PLL0 or Osc1/Pll1 */

                                0,

                                1);

        /* Enable Generic clock 0*/

        pm_gc_enable(pm, 0);

        /* switch to clock */

        pm_cksel( pm, 1, 1, 1, 0, 1, 0 );

        flashc_set_wait_state( 1 );

        pm_switch_to_clock( pm, AVR32_PM_MCCTRL_MCSEL_PLL0 );

        /* Setup the LED's for output. */

        vParTestInitialise();

        /* Start the flash tasks just to provide visual feedback that the demo is

        executing. */

        vStartLEDFlashTasks( mainLED_TASK_PRIORITY );

        /* 2) Start ethernet task. */

        vStartEthernetTask( mainETH_TASK_PRIORITY );

        /* 3) Start FreeRTOS. */

        vTaskStartScheduler();

        /* Will only reach here if there was insufficient memory to create the idle task. */

        return 0;

}

/*-----------------------------------------------------------*/