1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
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 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;
}
/*-----------------------------------------------------------*/
|
