Contiki-NG
testcfs.c
1 /*
2  * Copyright (c) 2006, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  */
30 
31 #include "contiki.h"
32 #include "sys/etimer.h"
33 #include "sys/clock.h"
34 #include "cfs/cfs.h"
35 
36 #include <stdio.h>
37 
38 PROCESS(test_cfs_process, "Test CFS process");
39 AUTOSTART_PROCESSES(&test_cfs_process);
40 
41 PROCESS_THREAD(test_cfs_process, ev, data)
42 {
43  static struct etimer et;
44  static int fd;
45  static uint16_t counter;
46  static char buf[30];
47 
48  PROCESS_BEGIN();
49 
50  printf("Starting CFS test process\n");
51 
52  while(1) {
55 
56  /* Write to filesystem */
57  sprintf(buf, "filedata%04ifiledata%04i", counter, counter);
58  fd = cfs_open("filename", CFS_READ | CFS_WRITE);
59  cfs_seek(fd, 0, CFS_SEEK_SET);
60  cfs_write(fd, buf, 24);
61  cfs_close(fd);
62  printf("Wrote to filesystem: '%s'\n", buf);
63  counter++;
64 
67 
68  /* Read from filesystem */
69  fd = cfs_open("file1", CFS_READ | CFS_WRITE);
70  cfs_seek(fd, 4, CFS_SEEK_SET);
71  cfs_read(fd, buf, 12);
72  cfs_close(fd);
73  buf[12] = '\0';
74  printf("Read from filesystem: '%s'\n", buf);
75 
76  }
77 
78  PROCESS_END();
79 }
#define PROCESS(name, strname)
Declare a process.
Definition: process.h:307
#define PROCESS_BEGIN()
Define the beginning of a process.
Definition: process.h:120
#define PROCESS_END()
Define the end of a process.
Definition: process.h:131
#define PROCESS_WAIT_EVENT_UNTIL(c)
Wait for an event to be posted to the process, with an extra condition.
Definition: process.h:157
int cfs_open(const char *name, int flags)
Open a file.
Definition: cfs-sdcard.c:41
#define CLOCK_SECOND
A second, measured in system clock time.
Definition: clock.h:82
cfs_offset_t cfs_seek(int fd, cfs_offset_t offset, int whence)
Seek to a specified position in an open file.
Definition: cfs-sdcard.c:94
Event timer header file.
int cfs_write(int fd, const void *buf, unsigned int len)
Write data to an open file.
Definition: cfs-sdcard.c:86
CFS header file.
int etimer_expired(struct etimer *et)
Check if an event timer has expired.
Definition: etimer.c:213
void cfs_close(int fd)
Close an open file.
Definition: cfs-sdcard.c:69
A timer.
Definition: etimer.h:76
int cfs_read(int fd, void *buf, unsigned int len)
Read data from an open file.
Definition: cfs-sdcard.c:78
#define CFS_READ
Specify that cfs_open() should open a file for reading.
Definition: cfs.h:92
#define CFS_SEEK_SET
Specify that cfs_seek() should compute the offset from the beginning of the file. ...
Definition: cfs.h:129
#define CFS_WRITE
Specify that cfs_open() should open a file for writing.
Definition: cfs.h:106
PROCESS_THREAD(cc2538_rf_process, ev, data)
Implementation of the cc2538 RF driver process.
Definition: cc2538-rf.c:1097
void etimer_set(struct etimer *et, clock_time_t interval)
Set an event timer.
Definition: etimer.c:177