2 FreeRTOS.org V5.2.0 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License (version 2) as published
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8 by the Free Software Foundation and modified by the FreeRTOS exception.
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10 FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 You should have received a copy of the GNU General Public License along
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16 with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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17 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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19 A special exception to the GPL is included to allow you to distribute a
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20 combined work that includes FreeRTOS.org without being obliged to provide
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21 the source code for any proprietary components. See the licensing section
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22 of http://www.FreeRTOS.org for full details.
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25 ***************************************************************************
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27 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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29 * This is a concise, step by step, 'hands on' guide that describes both *
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30 * general multitasking concepts and FreeRTOS specifics. It presents and *
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31 * explains numerous examples that are written using the FreeRTOS API. *
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32 * Full source code for all the examples is provided in an accompanying *
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35 ***************************************************************************
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39 Please ensure to read the configuration and relevant port sections of the
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40 online documentation.
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42 http://www.FreeRTOS.org - Documentation, latest information, license and
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45 http://www.SafeRTOS.com - A version that is certified for use in safety
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48 http://www.OpenRTOS.com - Commercial support, development, porting,
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49 licensing and training services.
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52 #include "FreeRTOS.h"
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54 /*-----------------------------------------------------------*/
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56 /* Called by the startup code to initialise the run time system. */
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57 unsigned portCHAR __low_level_init( void );
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59 /*-----------------------------------------------------------*/
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61 unsigned portCHAR __low_level_init( void )
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63 unsigned portCHAR resetflag = RESF;
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64 unsigned portBASE_TYPE i = 0;
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66 portDISABLE_INTERRUPTS(); /* disable global interrupts */
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68 PRCMD = 0x00; /* On-chip debug mode */
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69 PCC = 0x00; /* high speed mode fCPU */
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71 WDTM2 = 0xF; /* Stop watchdog Timer */
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72 PLLS = 0x03; /* Set PLL stabilisation time */
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73 PLLON = 1; /* activate PLL */
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74 for( i = 0; i <= 2000; i++ ) /* Wait for stabilisation */
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78 while( LOCK ) /* Wait for PLL frequency stabiliasation */
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82 SELPLL = 1; /* Set CPU operation to PLL mode */
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86 /*-----------------------------------------------------------*/
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