main.c

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/* Copyright (c) 2009 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.
 *
 * 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
 *
 */
/* Environment include files. */
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include "pm.h"
#include "flashc.h"
#include "sdramc.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"
#include "gpio.h"
#include "print_funcs.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 )

void print_lwip_dbg(const char *format, ...) {
    va_list argp;
    static char str[80];

    va_start(argp, format);
    sprintf(str, format, argp);
    va_end(argp);

    print_dbg(str);
    print_dbg("\n");
}

void local_start_pll(void) {

    volatile avr32_pm_t *pm = &AVR32_PM;

    // Switch the main clock to OSC0
    pm_switch_to_osc0(pm, FOSC0, OSC0_STARTUP);
    // Setup PLL0 on OSC0, mul=15 ,no divisor, lockcount=16, ie. 12Mhz x 11 = 132MHz output
    pm_pll_setup(pm,    // volatile avr32_pm_t *pm
            0,  // unsigned int pll
            10, // unsigned int mul
            1,  // unsigned int div, Sel Osc0/PLL0 or Osc1/Pll1
            0,  // unsigned int osc
            16);// unsigned int lockcount


    // set PLL options to run @ 96 Mhz
    pm_pll_set_option(pm, // volatile avr32_pm_t *pm
            0, // unsigned int pll
            1, // unsigned int  pll_freq
            1, // unsigned int  pll_div2
            0); // unsigned int  pll_wbwdisable
    // Enable PLL0
    pm_pll_enable(pm, 0);
    // Wait for PLL0 locked
    pm_wait_for_pll0_locked(pm) ;
    // Setup generic clock number 0 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, 0);

    // Enable Generic clock 0*/
    pm_gc_enable(pm, 0);

    // set divider to 8 for PBA bus and 2 for PBB 0 for CPU
    pm_cksel(pm, 1, 1, 1, 0, 0, 0);

    // one wait state at 66 Mhz
    flashc_set_wait_state(1);
    /* Output the clock to a gpio(PA7) */
    gpio_enable_module_pin(AVR32_PM_GCLK_0_0_PIN, AVR32_PM_GCLK_0_0_FUNCTION);

    // switch to clock
    pm_switch_to_clock(pm, AVR32_PM_MCCTRL_MCSEL_PLL0);
    
    /* Initialize the SDRAM Controller and the external SDRAM chip. */
    sdramc_init(66000000);
    
}

int main(void) {

    /* Init rs232 with pba = FOSC0 */
    init_dbg_rs232(66000000/4);
    print_dbg("Init Done\n");
    

    /* 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);
    print_dbg("vStartLEDFlashTasks :Started\n");

    /* 2) Start the ethernet tasks launcher. */
    vStartEthernetTaskLauncher(configMAX_PRIORITIES);
    print_dbg("vStartEthernetTaskLauncher :Started\n");

    /* 3) Start FreeRTOS. */
    vTaskStartScheduler();

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

    return 0;
}
/*-----------------------------------------------------------*/

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