FlapJackApps/libdc
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Ignore invalid gas mixes.

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Gas mixes that have been marked as disabled are stored as the value 0xF0.
When interpreted as an oxygen percentage, this results in an out of range
value. Therefore, these gas mixes should simply be ignored.
This commit is contained in:
Jef Driesen 2014-02-15 09:02:23 +01:00
parent 56aa3b6669
commit d30b5c65fe
1 changed files with 16 additions and 1 deletions
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17
src/cressi_edy_parser.c
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@ -52,6 +52,21 @@ static const dc_parser_vtable_t cressi_edy_parser_vtable = {
};
static unsigned int
cressi_edy_parser_count_gasmixes (const unsigned char *data)
{
// Count the number of active gas mixes. The active gas
// mixes are always first, so we stop counting as soon
// as the first gas marked as disabled is found.
unsigned int i = 0;
while (i < 3) {
if (data[0x17 - i] == 0xF0)
break;
i++;
}
return i;
}
dc_status_t
cressi_edy_parser_create (dc_parser_t **out, dc_context_t *context, unsigned int model)
{
@ -139,7 +154,7 @@ cressi_edy_parser_get_field (dc_parser_t *abstract, dc_field_type_t type, unsign
*((double *) value) = (bcd2dec (p[0x02] & 0x0F) * 100 + bcd2dec (p[0x03])) / 10.0;
break;
case DC_FIELD_GASMIX_COUNT:
*((unsigned int *) value) = 3;
*((unsigned int *) value) = cressi_edy_parser_count_gasmixes(p);
break;
case DC_FIELD_GASMIX:
gasmix->helium = 0.0;