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104 lines
4.8 KiB
C
104 lines
4.8 KiB
C
/*
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FreeRTOS V6.0.1 - Copyright (C) 2009 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS eBook *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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#include "FreeRTOS.h"
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/*-----------------------------------------------------------*/
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/* Called by the startup code to initialise the run time system. */
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unsigned portCHAR __low_level_init(void);
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/*-----------------------------------------------------------*/
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unsigned portCHAR __low_level_init(void)
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{
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unsigned portCHAR resetflag = RESF;
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unsigned portCHAR psval = 0;
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unsigned portBASE_TYPE i = 0;
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/* Setup provided by NEC. */
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portDISABLE_INTERRUPTS(); /* disable global interrupts */
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PRCMD = 0x00; /* On-chip debug mode */
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OCDM = 0x00;
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VSWC = 0x00; /* set system wait control register */
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WDTM2 = 0x00; /* WDT2 setting */
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PLLON = 0; /* PLL stop mode */
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psval = 0x0A | 0x00;
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PRCMD = psval; /* set Command Register */
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CKC = psval; /* set Clock Control Register */
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PLLS = 0x03;
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psval = 0x80; /* Set fXX and fCPU */
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PRCMD = psval;
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PCC = psval;
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PLLON = 1; /* activate PLL */
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for( i = 0; i <= 2000; i++ ) /* Wait for stabilisation */
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{
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portNOP();
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}
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while( LOCK ) /* Wait for PLL frequency stabiliasation */
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{
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;
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}
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SELPLL = 1; /* Set PLL mode active */
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RSTOP = 0; /* Set fR (enable) */
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BGCE0 = 0; /* Set fBRG(disable) */
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psval = 0x00; /* Stand-by setting */
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PRCMD = psval; /* set Command Register */
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PSC = psval; /* set Power Save Control Register */
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return pdTRUE;
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}
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/*-----------------------------------------------------------*/
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