Paparazzi UAS  v5.15_devel-50-g4d7045d
Paparazzi is a free software Unmanned Aircraft System.
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settings_arch.c
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1 /*
2  * Copyright (C) 2009-2015 The Paparazzi Team
3  *
4  * This file is part of paparazzi.
5  *
6  * paparazzi is free software; you can redistribute it and/or modify
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14  * GNU General Public License for more details.
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20  */
21 
29 #include "subsystems/settings.h"
30 #include <stdio.h>
31 
33 #ifndef PERSISTENT_SETTINGS_FILE
34 #define PERSISTENT_SETTINGS_FILE "pprz_persistent_settings.binary"
35 #endif
36 
38 {
39  FILE *file= fopen(PERSISTENT_SETTINGS_FILE, "wb");
40  if (file != NULL) {
41  fwrite(ptr, size, 1, file);
42  fclose(file);
43  return 0;
44  }
45  printf("Could not open settings file %s to write!\n", PERSISTENT_SETTINGS_FILE);
46  return -1;
47 }
48 
50 {
51  FILE *file= fopen(PERSISTENT_SETTINGS_FILE, "rb");
52  if (file == NULL) {
53  printf("Could not open settings file %s to read!\n", PERSISTENT_SETTINGS_FILE);
54  return -1;
55  }
56  /* check if binary file size matches requested struct size */
57  fseek(file, 0, SEEK_END);
58  if (ftell(file) != size) {
59  printf("Settings file %s size does not match, deleting it!\n", PERSISTENT_SETTINGS_FILE);
60  fclose(file);
62  return -1;
63  }
64  fseek(file, 0, SEEK_SET);
65  int bytes_read = fread(ptr, size, 1, file);
66  if (bytes_read != size) {
67  printf("Could only read %d of %d bytes from %s!\n", bytes_read, size,
69  }
70  fclose(file);
71  return 0;
72 }
73 
75 {
76  return remove(PERSISTENT_SETTINGS_FILE);
77 }
int32_t persistent_write(void *ptr, uint32_t size)
Definition: settings_arch.c:33
int32_t persistent_read(void *ptr, uint32_t size)
Definition: settings_arch.c:38
unsigned long uint32_t
Definition: types.h:18
signed long int32_t
Definition: types.h:19
Persistent settings interface.
#define PERSISTENT_SETTINGS_FILE
Default file used to store persistent settings.
Definition: settings_arch.c:34
int32_t persistent_clear(void)
Definition: settings_arch.c:74