/* | |
FreeRTOS V6.0.2 - Copyright (C) 2010 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* If you are: * | |
* * | |
* + New to FreeRTOS, * | |
* + Wanting to learn FreeRTOS or multitasking in general quickly * | |
* + Looking for basic training, * | |
* + Wanting to improve your FreeRTOS skills and productivity * | |
* * | |
* then take a look at the FreeRTOS eBook * | |
* * | |
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" * | |
* http://www.FreeRTOS.org/Documentation * | |
* * | |
* A pdf reference manual is also available. Both are usually delivered * | |
* to your inbox within 20 minutes to two hours when purchased between 8am * | |
* and 8pm GMT (although please allow up to 24 hours in case of * | |
* exceptional circumstances). Thank you for your support! * | |
* * | |
*************************************************************************** | |
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. | |
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 and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
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 portCHAR psval = 0; | |
unsigned portBASE_TYPE i = 0; | |
/* Setup provided by NEC. */ | |
portDISABLE_INTERRUPTS(); /* disable global interrupts */ | |
PRCMD = 0x00; /* On-chip debug mode */ | |
OCDM = 0x00; | |
VSWC = 0x00; /* set system wait control register */ | |
WDTM2 = 0x00; /* WDT2 setting */ | |
PLLON = 0; /* PLL stop mode */ | |
psval = 0x0A | 0x00; | |
PRCMD = psval; /* set Command Register */ | |
CKC = psval; /* set Clock Control Register */ | |
PLLS = 0x03; | |
psval = 0x80; /* Set fXX and fCPU */ | |
PRCMD = psval; | |
PCC = psval; | |
PLLON = 1; /* activate PLL */ | |
for( i = 0; i <= 2000; i++ ) /* Wait for stabilisation */ | |
{ | |
portNOP(); | |
} | |
while( LOCK ) /* Wait for PLL frequency stabiliasation */ | |
{ | |
; | |
} | |
SELPLL = 1; /* Set PLL mode active */ | |
RSTOP = 0; /* Set fR (enable) */ | |
BGCE0 = 0; /* Set fBRG(disable) */ | |
psval = 0x00; /* Stand-by setting */ | |
PRCMD = psval; /* set Command Register */ | |
PSC = psval; /* set Power Save Control Register */ | |
return pdTRUE; | |
} | |
/*-----------------------------------------------------------*/ |