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| author |  Berthold Stoeger <bstoeger@mail.tuwien.ac.at> | 2021-07-18 22:26:38 +0200 |
|---|---|---|
| committer |  Dirk Hohndel <dirk@hohndel.org> | 2021-07-19 10:13:51 -0700 |
| commit | 7e11a3537102697604dbb971a0f3800b25db5ffe (patch) | |
| tree | bbe09e35746d217b062d941bd963b783dd3c2713 /core/sample.h | |
| parent | 48c2929f480b74f50d97ea6790161e2a5446929d (diff) | |
| download | subsurface-7e11a3537102697604dbb971a0f3800b25db5ffe.tar.gz | |
core: add a special NO_SENSOR value for sample::sensor
The sensor member of sample refers to a cylinder from which
the pressure was read. However, some dives don't even have
a cylinder. Therefore, introduce a special NO_SENSOR value
for these dives. Since the cylinder is given as a uint8_t,
0xff seems to be a sensible choice.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Diffstat (limited to 'core/sample.h')
| -rw-r--r-- | core/sample.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/core/sample.h b/core/sample.h index 75c7bb1b4..1732b4d02 100644 --- a/core/sample.h +++ b/core/sample.h @@ -9,6 +9,8 @@ extern "C" { #endif #define MAX_SENSORS 2 +#define NO_SENSOR ((uint8_t)-1) + struct sample // BASE TYPE BYTES UNITS RANGE DESCRIPTION { // --------- ----- ----- ----- ----------- duration_t time; // int32_t 4 seconds (0-34 yrs) elapsed dive time up to this sample @@ -23,7 +25,7 @@ struct sample // BASE TYPE BYTES UNITS RANGE o2pressure_t setpoint; // uint16_t 2 mbar (0-65 bar) O2 partial pressure (will be setpoint) o2pressure_t o2sensor[3]; // uint16_t 6 mbar (0-65 bar) Up to 3 PO2 sensor values (rebreather) bearing_t bearing; // int16_t 2 degrees (-1 no val, 0-360 deg) compass bearing - uint8_t sensor[MAX_SENSORS]; // uint8_t 1 sensorID (0-255) ID of cylinder pressure sensor + uint8_t sensor[MAX_SENSORS]; // uint8_t 1 sensorID (0-254) ID of cylinder pressure sensor uint16_t cns; // uint16_t 1 % (0-64k %) cns% accumulated uint8_t heartbeat; // uint8_t 1 beats/m (0-255) heart rate measurement volume_t sac; // 4 ml/min predefined SAC |