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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
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** as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS, 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.
***************************************************************************
***************************************************************************
* *
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
* *
* This is a concise, step by step, 'hands on' guide that describes both *
* general multitasking concepts and FreeRTOS specifics. It presents and *
* explains numerous examples that are written using the FreeRTOS API. *
* Full source code for all the examples is provided in an accompanying *
* .zip file. *
* *
***************************************************************************
***************************************************************************
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.
*/
/* ------------------------ System includes ------------------------------- */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
/* ------------------------ FreeRTOS includes ----------------------------- */
#include <FreeRTOS.h>
#include <serial.h>
/* ------------------------ Prototypes ------------------------------------ */
void vSerialPutStringNOISR( xComPortHandle pxPort,
const signed portCHAR * const pcString,
unsigned portSHORT usStringLength );
/* ------------------------ Start implementation -------------------------- */
void
_exit( int status )
{
asm volatile ( "halt" );
for( ;; );
}
pid_t
getpid( void )
{
return 0;
}
int
kill( pid_t pid, int sig )
{
_exit( 0 );
}
int
close( int fd )
{
return 0;
}
int
fstat( int fd, struct stat *buf )
{
buf->st_mode = S_IFCHR;
buf->st_blksize = 0;
return 0;
}
ssize_t
write( int fd, const void *buf, size_t nbytes )
{
ssize_t res = nbytes;
extern xComPortHandle xSTDComPort;
switch ( fd )
{
case STDERR_FILENO:
vSerialPutStringNOISR( xSTDComPort,
( const signed portCHAR * const )buf,
( unsigned portSHORT )nbytes );
break;
case STDOUT_FILENO:
vSerialPutString( xSTDComPort,
( const signed portCHAR * const)buf,
( unsigned portSHORT )nbytes );
break;
default:
errno = EIO;
res = -1;
break;
}
return res;
}
int
read( int fd, void *buf, size_t nbytes )
{
switch ( fd )
{
default:
errno = EIO;
return -1;
}
}
int
isatty( int fd )
{
return 0;
}
off_t
lseek( int fd, off_t offset, int whence )
{
errno = EIO;
return ( off_t ) - 1;
}
extern char _end[];
char *heap_ptr;
void *
sbrk( ptrdiff_t nbytes )
{
char *base;
if( !heap_ptr )
heap_ptr = ( char * )&_end;
base = heap_ptr;
heap_ptr += nbytes;
return base;
}
|
