/* | |
FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd. | |
This file is part of the FreeRTOS distribution. | |
FreeRTOS is free software; you can redistribute it and/or modify it under | |
the terms of the GNU General Public License (version 2) as published by the | |
Free Software Foundation and modified by the FreeRTOS exception. | |
**NOTE** The exception to the GPL is included to allow you to distribute a | |
combined work that includes FreeRTOS without being obliged to provide the | |
source code for proprietary components outside of the FreeRTOS kernel. | |
Alternative commercial license and support terms are also available upon | |
request. See the licensing section of http://www.FreeRTOS.org for full | |
license details. | |
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT | |
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
more details. | |
You should have received a copy of the GNU General Public License along | |
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59 | |
Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
*************************************************************************** | |
* * | |
* Looking for a quick start? Then check out the FreeRTOS eBook! * | |
* See http://www.FreeRTOS.org/Documentation for details * | |
* * | |
*************************************************************************** | |
1 tab == 4 spaces! | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
#include "FreeRTOS.h" | |
/*-----------------------------------------------------------*/ | |
/* Called by the startup code to initialise the run time system. */ | |
unsigned portCHAR __low_level_init( void ); | |
/*-----------------------------------------------------------*/ | |
unsigned portCHAR __low_level_init( void ) | |
{ | |
unsigned portCHAR resetflag = RESF; | |
unsigned portBASE_TYPE i = 0; | |
portDISABLE_INTERRUPTS(); /* disable global interrupts */ | |
PRCMD = 0x00; /* On-chip debug mode */ | |
PCC = 0x00; /* high speed mode fCPU */ | |
VSWC = 0x00; | |
WDTM2 = 0xF; /* Stop watchdog Timer */ | |
PLLS = 0x03; /* Set PLL stabilisation time */ | |
PLLON = 1; /* activate PLL */ | |
for( i = 0; i <= 2000; i++ ) /* Wait for stabilisation */ | |
{ | |
portNOP(); | |
} | |
while( LOCK ) /* Wait for PLL frequency stabiliasation */ | |
{ | |
portNOP(); | |
} | |
SELPLL = 1; /* Set CPU operation to PLL mode */ | |
return pdTRUE; | |
} | |
/*-----------------------------------------------------------*/ |