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Add a simple tool for dumping AP_Var data from an EEPROM dump. 

git-svn-id: https://arducopter.googlecode.com/svn/trunk@2676 f9c3cf11-9bcb-44bc-f272-b75c42450872
This commit is contained in:
DrZiplok 2011-06-25 07:56:38 +00:00
parent a08cd5a6dc
commit 569087199d
1 changed files with 84 additions and 0 deletions
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84
libraries/AP_Common/tools/eedump.c Normal file
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/*
* Simple tool to dump the AP_Var contents from an EEPROM dump
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
uint8_t eeprom[0x1000];
#pragma pack(1)
struct EEPROM_header {
uint16_t magic;
uint8_t revision;
uint8_t spare;
};
static const uint16_t k_EEPROM_magic = 0x5041;
static const uint16_t k_EEPROM_revision = 2;
struct Var_header {
uint8_t size:6;
uint8_t spare:2;
uint8_t key;
};
static const uint8_t k_key_sentinel = 0xff;
void
fail(const char *why)
{
fprintf(stderr, "ERROR: %s\n", why);
exit(1);
}
int
main(int argc, char *argv[])
{
FILE *fp;
struct EEPROM_header *header;
struct Var_header *var;
unsigned index;
unsigned i;
if (argc != 2) {
fail("missing EEPROM file name");
}
if (NULL == (fp = fopen(argv[1], "rb"))) {
fail("can't open EEPROM file");
}
if (1 != fread(eeprom, sizeof(eeprom), 1, fp)) {
fail("can't read EEPROM file");
}
fclose(fp);
header = (struct EEPROM_header *)&eeprom[0];
if (header->magic != k_EEPROM_magic) {
fail("bad magic in EEPROM file");
}
if (header->revision != 2) {
fail("unsupported EEPROM format revision");
}
printf("Header OK\n");
index = sizeof(*header);
for (;;) {
var = (struct Var_header *)&eeprom[index];
if (var->key == k_key_sentinel) {
printf("end sentinel at %u\n", index);
break;
}
printf("%04x: key %u size %d\n ", index, var->key, var->size + 1);
index += sizeof(*var);
for (i = 0; i <= var->size; i++) {
printf(" %02x", eeprom[index + i]);
}
printf("\n");
index += var->size + 1;
if (index >= sizeof(eeprom)) {
fflush(stdout);
fail("missing end sentinel");
}
}
}