CCR code: Change to sample structure

1) All the variables in the sample structures are strongly typed
2) Two additional types were declared in units.h:
     o2pressure_t
     bearing_t
3) The following variables were added:
     diluentpressure
     o2setpoint
     o2sensor[3]
4) Changes to a number of files were made to chanf
     sample->po2 to sample->po2.mbar
     bearing to bearring.degrees

Signed-off-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 16 insertions, 6 deletions

diff --git a/units.h b/units.h
index 0a9e44b79..4b32d5237 100644
--- a/units.h
+++ b/units.h
@@ -59,22 +59,32 @@ typedef int64_t timestamp_t;
 
 typedef struct
 {
-	int seconds;
+	uint32_t seconds; // durations up to 68 yrs
 } duration_t;
 
 typedef struct
 {
-	int mm;
-} depth_t;
+	int32_t mm;
+} depth_t; // depth to 2000 km
 
 typedef struct
 {
-	int mbar;
+	int32_t mbar; // pressure up to 2000 bar
 } pressure_t;
 
 typedef struct
 {
-	int mkelvin;
+	uint16_t mbar;
+} o2pressure_t; // pressure up to 65 bar
+
+typedef struct
+{
+	int16_t degrees;
+} bearing_t; // compass bearing
+
+typedef struct
+{
+	int32_t mkelvin; // up to 1750 degrees K
 } temperature_t;
 
 typedef struct
@@ -242,4 +252,4 @@ struct units {
 }
 #endif
 
-#endif
\ No newline at end of file
+#endif