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Shearwater: extract tank sensor data for log version 7

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The first dive computer to support this is the Perdix AI. Interestingly,
this keeps track of two sensors at all times. I haven't seen data with
two sensors active, yet.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2017-07-07 07:05:53 -07:00
parent d85481cefd
commit 8736a6dca1
1 changed files with 24 additions and 0 deletions
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24
src/shearwater_predator_parser.c
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@ -583,6 +583,30 @@ shearwater_predator_parser_samples_foreach (dc_parser_t *abstract, dc_sample_cal
sample.deco.time = data[offset + 9] * 60;
if (callback) callback (DC_SAMPLE_DECO, sample, userdata);
// for logversion 7 and newer (introduced for Perdix AI)
// detect tank pressure
if (parser->logversion >= 7) {
// Pressure (2 psi).
// 0xFFFF is not paired / no coms for 90 seconds
// 0xFFFE no coms for 30 seconds
// top 4 bits battery level:
// 0 - normal, 1 - critical, 2 - warning
unsigned int pressure = array_uint16_be (data + offset + 27);
if ((pressure & 0xFFF0) != 0xFFF0) {
pressure &= 0x0FFF;
sample.pressure.tank = 0;
sample.pressure.value = pressure * 2 * PSI / BAR;
if (callback) callback (DC_SAMPLE_PRESSURE, sample, userdata);
}
pressure = array_uint16_be (data + offset + 19);
if ((pressure & 0xFFF0) != 0xFFF0) {
pressure &= 0x0FFF;
sample.pressure.tank = 1;
sample.pressure.value = pressure * 2 * PSI / BAR;
if (callback) callback (DC_SAMPLE_PRESSURE, sample, userdata);
}
}
offset += parser->samplesize;
}