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comparison Small_CPU/Src/pressure.c @ 688:8c92f7743e14 Betatest

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Added sanity check for temperature and pressure values: It happens from time to time at the debug hardware (electronic without housing) that pressure or temperature are in an invalid range . To avoid side effects a sanity check has been added.
author Ideenmodellierer
date Fri, 05 Aug 2022 15:13:29 +0200
parents 4644891d2f51
children 2ace67231c49
comparison
equal deleted inserted replaced
687:5e9973957318 688:8c92f7743e14
47 #define CMD_PROM_RD 0xA0 // Prom read command 47 #define CMD_PROM_RD 0xA0 // Prom read command
48 48
49 /* remove comment to use a predefined profile for pressure changes instead of real world data */ 49 /* remove comment to use a predefined profile for pressure changes instead of real world data */
50 /* #define SIMULATE_PRESSURE */ 50 /* #define SIMULATE_PRESSURE */
51 51
52
52 #define PRESSURE_SURFACE_MAX_MBAR (1060.0f) /* It is unlikely that pressure at surface is greater than this value => clip to it */ 53 #define PRESSURE_SURFACE_MAX_MBAR (1060.0f) /* It is unlikely that pressure at surface is greater than this value => clip to it */
54
55 #define PRESSURE_MINIMUM (0.0f)
56 #define TEMPERATURE_MINIMUM (-100.0f)
53 57
54 #define PRESSURE_SURFACE_QUE (30u) /* history buffer [minutes] for past pressure measurements */ 58 #define PRESSURE_SURFACE_QUE (30u) /* history buffer [minutes] for past pressure measurements */
55 #define PRESSURE_SURFACE_EVA_WINDOW (15u) /* Number of entries evaluated during instability test. Used to avoid detection while dive enters water */ 59 #define PRESSURE_SURFACE_EVA_WINDOW (15u) /* Number of entries evaluated during instability test. Used to avoid detection while dive enters water */
56 #define PRESSURE_SURFACE_STABLE_LIMIT (10u) /* Define pressure as stable if delta (mBar) is below this value */ 60 #define PRESSURE_SURFACE_STABLE_LIMIT (10u) /* Define pressure as stable if delta (mBar) is below this value */
57 #define PRESSURE_SURFACE_DETECT_STABLE_CNT (5u) /* Event count to detect stable condition */ 61 #define PRESSURE_SURFACE_DETECT_STABLE_CNT (5u) /* Event count to detect stable condition */
662 / 8192 );// )) / 10; // pow(2,21), pow(2,13) 666 / 8192 );// )) / 10; // pow(2,21), pow(2,13)
663 667
664 ambient_temperature = ((float)local_Tx100) / 100; 668 ambient_temperature = ((float)local_Tx100) / 100;
665 ambient_temperature += temperature_offset; 669 ambient_temperature += temperature_offset;
666 670
671 if(ambient_temperature < TEMPERATURE_MINIMUM)
672 {
673 ambient_temperature = 20.0;
674 }
675
667 calc_pressure = ((float)local_Px10) / 10; 676 calc_pressure = ((float)local_Px10) / 10;
668 calc_pressure += pressure_offset; 677 calc_pressure += pressure_offset;
669 678
670 runningAvg = (avgCnt * runningAvg + calc_pressure) / (avgCnt + 1); 679 runningAvg = (avgCnt * runningAvg + calc_pressure) / (avgCnt + 1);
671 if (avgCnt < 10) /* build an average considering the last measurements to have a weight "1 of 10" */ 680 if (avgCnt < 10) /* build an average considering the last measurements to have a weight "1 of 10" */
672 { /* Main reason for this is the jitter of up to +-10 HPa in surface mode which is caused */ 681 { /* Main reason for this is the jitter of up to +-10 HPa in surface mode which is caused */
673 avgCnt++; /* by the measurement range of the sensor which is focused on under water pressure measurement */ 682 avgCnt++; /* by the measurement range of the sensor which is focused on under water pressure measurement */
674 } 683 }
675 ambient_pressure_mbar = runningAvg; 684 ambient_pressure_mbar = runningAvg;
685
686 if(ambient_pressure_mbar < PRESSURE_MINIMUM)
687 {
688 ambient_pressure_mbar = 1000.0;
689 }
676 } 690 }
677 691
678 692
679 /* taken from AN520 by meas-spec.com dated 9. Aug. 2011 693 /* taken from AN520 by meas-spec.com dated 9. Aug. 2011
680 * short and int are both 16bit according to AVR/GCC google results 694 * short and int are both 16bit according to AVR/GCC google results