annotate Small_CPU/Src/pressure.c @ 94:c6d284ea265b kittz

reduce i2c speed and dutycycle for compass stability
author Dmitry Romanov <kitt@bk.ru>
date Mon, 26 Nov 2018 12:20:31 +0300
parents 5f11787b4f42
children f11f0bf6ef2d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1 /**
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2 ******************************************************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
3 * @file pressure.c
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
4 * @author heinrichs weikamp gmbh
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
5 * @date 2014
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
6 * @version V0.0.2
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
7 * @since 20-Oct-2016
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
8 * @brief
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
9 *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
10 @verbatim
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
11 ==============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
12 ##### How to use #####
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
13 ==============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
14 V0.0.2 18-Oct-2016 pressure_calculation_AN520_004_mod_MS5803_30BA__09_2015
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
15
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
16 @endverbatim
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
17 ******************************************************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
18 * @attention
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
19 *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
20 * <h2><center>&copy; COPYRIGHT(c) 2016 heinrichs weikamp</center></h2>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
21 *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
22 ******************************************************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
23 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
24
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
25
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
26
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
27 /* surface time
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
28 the last 30 minutes will be saved once per minute in a endless loop
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
29 at the beginning of a dive the oldest value will be used
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
30 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
31
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
32
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
33 #include "pressure.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
34 #include "i2c.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
35 #include "rtc.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
36
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
37 #define CMD_RESET 0x1E // ADC reset command
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
38 #define CMD_ADC_READ 0x00 // ADC read command
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
39 #define CMD_ADC_CONV 0x40 // ADC conversion command
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
40 #define CMD_ADC_D1 0x00 // ADC D1 conversion
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
41 #define CMD_ADC_D2 0x10 // ADC D2 conversion
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
42 #define CMD_ADC_256 0x00 // ADC OSR=256
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
43 #define CMD_ADC_512 0x02 // ADC OSR=512
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
44 #define CMD_ADC_1024 0x04 // ADC OSR=1024
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
45 #define CMD_ADC_2048 0x06 // ADC OSR=2056
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
46 #define CMD_ADC_4096 0x08 // ADC OSR=4096
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
47 #define CMD_PROM_RD 0xA0 // Prom read command
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
48
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
49
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
50 //uint16_t get_ci(uint8_t cmd);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
51 //uint8_t get_ci_crc(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
52 uint16_t get_ci_by_coef_num(uint8_t coef_num);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
53 void pressure_calculation_new(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
54 void pressure_calculation_old(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
55 void pressure_calculation_AN520_004_mod_MS5803_30BA__09_2015(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
56
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
57 uint8_t crc4(uint16_t n_prom[]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
58
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
59 HAL_StatusTypeDef pressure_sensor_get_data(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
60 uint32_t get_adc(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
61 uint8_t pressureSensorInitSuccess = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
62
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
63 //void test_calculation(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
64
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
65 uint16_t C[8] = { 1 };
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
66 uint32_t D1 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
67 uint32_t D2 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
68 uint8_t n_crc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
69
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
70 int64_t C5_x_2p8 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
71 int64_t C2_x_2p16 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
72 int64_t C1_x_2p15 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
73
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
74 /*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
75 short C2plus10000 = -1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
76 short C3plus200 = -1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
77 short C4minus250 = -1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
78 short UT1 = -1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
79 short C6plus100 = -1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
80 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
81
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
82 float ambient_temperature = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
83 float ambient_pressure_mbar = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
84 float surface_pressure_mbar = 1000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
85 float surface_ring_mbar[31] = { 0 };
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
86
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
87 uint8_t secondCounterSurfaceRing = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
88
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
89 float get_temperature(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
90 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
91 return ambient_temperature;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
92 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
93
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
94 //float test = 1000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
95
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
96 float get_pressure_mbar(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
97 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
98 // return test;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
99 return ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
100 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
101
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
102
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
103 float get_surface_mbar(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
104 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
105 return surface_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
106 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
107
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
108
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
109 void init_surface_ring(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
110 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
111 surface_ring_mbar[0] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
112 for(int i=1; i<31; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
113 surface_ring_mbar[i] = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
114 surface_pressure_mbar = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
115 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
116
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
117
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
118 /* the ring has one place with 0
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
119 * after that comes the oldest value
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
120 * the new pressure is written in this hole
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
121 * the oldest value is read and then the new hole
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
122 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
123 void update_surface_pressure(uint8_t call_rhythm_seconds)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
124 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
125 secondCounterSurfaceRing += call_rhythm_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
126
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
127 if(secondCounterSurfaceRing < 60)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
128 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
129
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
130 secondCounterSurfaceRing = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
131
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
132 int hole;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
133 for(hole=30;hole>0;hole--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
134 if(surface_ring_mbar[hole] == 0) { break; }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
135
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
136 surface_ring_mbar[hole] = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
137
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
138 hole++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
139 if(hole > 30)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
140 hole = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
141 surface_pressure_mbar = surface_ring_mbar[hole];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
142 surface_ring_mbar[hole] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
143 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
144
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
145
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
146 float demo_modify_temperature_helper(float bottom_mbar_diff_to_surface)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
147 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
148 const float temperature_surface = 31.0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
149 const float temperature_bottom = 14.0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
150
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
151 const float temperature_difference = temperature_bottom - temperature_surface;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
152
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
153 // range 0.0 - 1.0
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
154 float position_now = (ambient_pressure_mbar - surface_pressure_mbar) / bottom_mbar_diff_to_surface;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
155
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
156 if(position_now <= 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
157 return temperature_surface;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
158
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
159 if(position_now >= 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
160 return temperature_bottom;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
161
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
162 return temperature_surface + (temperature_difference * position_now);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
163 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
164
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
165
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
166 uint32_t demo_modify_temperature_and_pressure(int32_t divetime_in_seconds, uint8_t subseconds, float ceiling_mbar)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
167 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
168
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
169 const float descent_rate = 4000/60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
170 const float ascent_rate = 1000/60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
171 const uint32_t seconds_descend = (1 * 60) + 30;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
172 const uint32_t turbo_seconds_at_bottom_start = (0 * 60) + 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
173 const uint32_t seconds_descend_and_bottomtime = seconds_descend + turbo_seconds_at_bottom_start + (2 * 60) + 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
174 uint32_t time_elapsed_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
175 static float ambient_pressure_mbar_memory = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
176 static uint32_t time_last_call = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
177
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
178 if(divetime_in_seconds <= seconds_descend)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
179 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
180 ambient_pressure_mbar = (divetime_in_seconds * descent_rate) + ((float)(subseconds) * descent_rate) + surface_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
181 ambient_temperature = demo_modify_temperature_helper(descent_rate * seconds_descend);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
182
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
183 time_last_call = divetime_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
184 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
185 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
186 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
187 if(divetime_in_seconds <= seconds_descend + turbo_seconds_at_bottom_start)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
188 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
189 ambient_pressure_mbar = (seconds_descend * descent_rate) + surface_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
190 ambient_temperature = demo_modify_temperature_helper(descent_rate * seconds_descend);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
191 ambient_pressure_mbar_memory = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
192 time_last_call = divetime_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
193 return turbo_seconds_at_bottom_start;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
194 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
195 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
196 if(divetime_in_seconds <= seconds_descend_and_bottomtime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
197 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
198 ambient_pressure_mbar = (seconds_descend * descent_rate) + surface_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
199 ambient_temperature = demo_modify_temperature_helper(descent_rate * seconds_descend);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
200 ambient_pressure_mbar_memory = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
201 time_last_call = divetime_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
202 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
203 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
204 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
205 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
206 time_elapsed_in_seconds = divetime_in_seconds - time_last_call;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
207 ambient_pressure_mbar = ambient_pressure_mbar_memory - time_elapsed_in_seconds * ascent_rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
208
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
209 if(ambient_pressure_mbar < surface_pressure_mbar)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
210 ambient_pressure_mbar = surface_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
211 else if(ambient_pressure_mbar < ceiling_mbar)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
212 ambient_pressure_mbar = ceiling_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
213
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
214 ambient_temperature = demo_modify_temperature_helper(descent_rate * seconds_descend);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
215 ambient_pressure_mbar_memory = ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
216 time_last_call = divetime_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
217 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
218 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
219 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
220
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
221
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
222 /* called just once on power on */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
223 void init_pressure_DRx(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
224 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
225 uint8_t resetCommand[1] = {0x1E};
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
226
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
227 I2C_Master_Transmit( DEVICE_PRESSURE, resetCommand, 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
228 HAL_Delay(3);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
229
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
230 C[1] = get_ci_by_coef_num(0x02);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
231 C[2] = get_ci_by_coef_num(0x04);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
232 C[3] = get_ci_by_coef_num(0x06);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
233 C[4] = get_ci_by_coef_num(0x08);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
234 C[5] = get_ci_by_coef_num(0x0A);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
235 C[6] = get_ci_by_coef_num(0x0C);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
236
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
237 C5_x_2p8 = C[5] * 256;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
238 C2_x_2p16 = C[2] * 65536;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
239 C1_x_2p15 = C[1] * 32768;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
240 pressure_update();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
241 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
242
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
243 uint8_t is_init_pressure_done(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
244 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
245 return pressureSensorInitSuccess;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
246 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
247
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
248 uint8_t init_pressure(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
249 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
250 uint8_t buffer[1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
251 buffer[0] = 0x1e;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
252 uint8_t retValue = 0xFF;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
253
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
254
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
255 retValue = I2C_Master_Transmit( DEVICE_PRESSURE, buffer, 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
256 if(retValue != HAL_OK)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
257 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
258 return (HAL_StatusTypeDef)retValue;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
259 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
260 HAL_Delay(3);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
261
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
262 for(uint8_t i=0;i<8;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
263 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
264 C[i] = get_ci_by_coef_num(i);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
265 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
266 n_crc = crc4(C); // no evaluation at the moment hw 151026
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
267
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
268 C5_x_2p8 = C[5] * 256;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
269 C2_x_2p16 = C[2] * 65536;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
270 C1_x_2p15 = C[1] * 32768;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
271
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
272 if(I2C1_Status() == HAL_OK)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
273 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
274 pressureSensorInitSuccess = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
275 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
276 return pressure_update();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
277 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
278
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
279
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
280 uint32_t get_adc(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
281 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
282 uint8_t buffer[1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
283 uint8_t resivebuf[4];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
284 uint32_t answer = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
285 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
286 buffer[0] = 0x00; // Get ADC
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
287 I2C_Master_Transmit( DEVICE_PRESSURE, buffer, 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
288 I2C_Master_Receive( DEVICE_PRESSURE, resivebuf, 4);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
289 resivebuf[3] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
290 answer = 256*256 *(uint32_t)resivebuf[0] + 256 * (uint32_t)resivebuf[1] + (uint32_t)resivebuf[2];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
291
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
292 return answer;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
293 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
294
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
295
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
296 uint16_t get_ci_by_coef_num(uint8_t coef_num)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
297 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
298 uint8_t resivebuf[2];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
299
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
300 uint8_t cmd = CMD_PROM_RD+coef_num*2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
301 I2C_Master_Transmit( DEVICE_PRESSURE, &cmd, 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
302 I2C_Master_Receive( DEVICE_PRESSURE, resivebuf, 2);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
303 return (256*(uint16_t)resivebuf[0]) + (uint16_t)resivebuf[1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
304 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
305
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
306
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
307
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
308 uint8_t pressure_update(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
309 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
310 HAL_StatusTypeDef statusReturn = HAL_TIMEOUT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
311
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
312 statusReturn = pressure_sensor_get_data();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
313 pressure_calculation();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
314 return (uint8_t)statusReturn;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
315 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
316
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
317
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
318 uint32_t pressure_sensor_get_one_value(uint8_t cmd, HAL_StatusTypeDef *statusReturn)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
319 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
320 uint8_t command = CMD_ADC_CONV + cmd;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
321 HAL_StatusTypeDef statusReturnTemp = HAL_TIMEOUT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
322
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
323 statusReturnTemp = I2C_Master_Transmit( DEVICE_PRESSURE, &command, 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
324
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
325 if(statusReturn)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
326 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
327 *statusReturn = statusReturnTemp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
328 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
329
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
330 switch (cmd & 0x0f) // wait necessary conversion time
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
331 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
332 case CMD_ADC_256 : HAL_Delay(1); break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
333 case CMD_ADC_512 : HAL_Delay(3); break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
334 case CMD_ADC_1024: HAL_Delay(4); break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
335 case CMD_ADC_2048: HAL_Delay(6); break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
336 case CMD_ADC_4096: HAL_Delay(10); break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
337 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
338 return get_adc();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
339 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
340
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
341
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
342 HAL_StatusTypeDef pressure_sensor_get_data(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
343 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
344 HAL_StatusTypeDef statusReturn1 = HAL_TIMEOUT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
345 HAL_StatusTypeDef statusReturn2 = HAL_TIMEOUT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
346
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
347 D2 = pressure_sensor_get_one_value(CMD_ADC_D2 + CMD_ADC_4096, &statusReturn1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
348 D1 = pressure_sensor_get_one_value(CMD_ADC_D1 + CMD_ADC_4096, &statusReturn2);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
349
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
350 if(statusReturn2 > statusReturn1) // if anything is not HAL_OK (0x00) or worse
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
351 return statusReturn2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
352 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
353 return statusReturn1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
354 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
355
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
356
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
357 void pressure_sensor_get_pressure_raw(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
358 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
359 D1 = pressure_sensor_get_one_value(CMD_ADC_D1 + CMD_ADC_4096, 0);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
360 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
361
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
362
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
363 void pressure_sensor_get_temperature_raw(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
364 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
365 D2 = pressure_sensor_get_one_value(CMD_ADC_D2 + CMD_ADC_4096, 0);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
366 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
367
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
368
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
369 void pressure_calculation(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
370 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
371 if(I2C1_Status() != HAL_OK)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
372 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
373
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
374 pressure_calculation_AN520_004_mod_MS5803_30BA__09_2015();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
375 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
376
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
377 // before October 2016: pressure_calculation_old();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
378
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
379 // pressure_calculation_new();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
380 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
381
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
382 void pressure_calculation_AN520_004_mod_MS5803_30BA__09_2015(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
383 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
384 uint32_t local_D1; // ADC value of the pressure conversion
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
385 uint32_t local_D2; // ADC value of the temperature conversion
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
386 int32_t local_Px10; // compensated pressure value
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
387 int32_t local_Tx100; // compensated temperature value
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
388 int64_t local_dT; // int32_t, difference between actual and measured temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
389 int64_t local_OFF; // offset at actual temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
390 int64_t local_SENS; // sensitivity at actual temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
391
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
392 int64_t T2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
393 int64_t OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
394 int64_t SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
395
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
396 local_D1 = D1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
397 local_D2 = D2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
398
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
399 local_dT = ((int64_t)local_D2) - ((int64_t)C[5]) * 256; //pow(2,8);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
400 local_OFF = ((int64_t)C[2]) * 65536 + local_dT * ((int64_t)C[4]) / 128; // pow(2,16), pow(2,7)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
401 local_SENS = ((int64_t)C[1]) * 32768 + local_dT * ((int64_t)C[3]) / 256; // pow(2,15), pow(2,8)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
402
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
403 local_Tx100 = (int32_t)(2000 + (local_dT * ((int64_t)C[6])) / 8388608);// pow(2,23)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
404
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
405
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
406 if(local_Tx100 < 2000) // low temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
407 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
408 T2 = 3 * local_dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
409 T2 *= local_dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
410 T2 /= 8589934592;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
411
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
412 OFF2 = ((int64_t)local_Tx100) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
413 OFF2 *= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
414 OFF2 *= 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
415 OFF2 /= 2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
416
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
417 SENS2 = ((int64_t)local_Tx100) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
418 SENS2 *= SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
419 SENS2 *= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
420 SENS2 /= 8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
421
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
422 local_Tx100 -= (int32_t)T2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
423 local_OFF -= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
424 local_SENS -= SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
425 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
426 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
427 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
428 T2 = 7 * local_dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
429 T2 *= local_dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
430 T2 /= 137438953472;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
431
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
432 OFF2 = ((int64_t)local_Tx100) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
433 OFF2 *= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
434 OFF2 /= 16;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
435
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
436 local_Tx100 -= (int32_t)T2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
437 local_OFF -= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
438 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
439
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
440 local_Px10 = (int32_t)(
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
441 (((int64_t)((local_D1 * local_SENS) / 2097152)) - local_OFF)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
442 / 8192 );// )) / 10; // pow(2,21), pow(2,13)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
443
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
444 ambient_temperature = ((float)local_Tx100) / 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
445 ambient_pressure_mbar = ((float)local_Px10) / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
446 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
447
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
448
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
449 void pressure_calculation_new(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
450 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
451 #define POW2_8 (256)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
452 #define POW2_17 (131072)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
453 #define POW2_6 (64)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
454 #define POW2_16 (65536)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
455 #define POW2_7 (128)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
456 #define POW2_23 (8388608)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
457 #define POW2_21 (2097152)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
458 #define POW2_15 (32768)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
459 #define POW2_13 (8192)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
460 #define POW2_37 (137438953472)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
461 #define POW2_4 (16)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
462 #define POW2_33 (8589934592)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
463 #define POW2_3 (8)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
464
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
465 int32_t P; // compensated pressure value
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
466 int32_t T; // compensated temperature value
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
467 int32_t dT; // difference between actual and measured temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
468 int64_t OFF; // offset at actual temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
469 int64_t SENS;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
470
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
471 int32_t T2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
472 int64_t OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
473 int64_t SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
474
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
475 dT = ((int32_t)D2) - ((int32_t)C[5]) * POW2_8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
476 OFF = ((int64_t)C[2]) * POW2_16 + ((int64_t)dT) * ((int64_t)C[4]) / POW2_7;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
477 SENS = ((int64_t)C[1]) * POW2_15 + ((int64_t)dT) * ((int64_t)C[3]) / POW2_8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
478
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
479 T = 2000 + (dT * ((int32_t)C[6])) / POW2_23;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
480
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
481
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
482 if(T < 2000) // low temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
483 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
484 T2 = 3 * dT * dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
485 T2 /= POW2_33;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
486 OFF2 = ((int64_t)T) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
487 OFF2 *= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
488 OFF2 *= 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
489 OFF2 /= 2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
490 SENS2 = ((int64_t)T) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
491 SENS2 *= SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
492 SENS2 *= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
493 SENS2 /= POW2_3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
494 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
495 else // high temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
496 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
497 T2 = 7 * dT * dT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
498 T2 /= POW2_37;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
499 OFF2 = ((int64_t)T) - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
500 OFF2 *= OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
501 OFF2 /= POW2_4;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
502 SENS2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
503 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
504
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
505 T = T - T2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
506 OFF = OFF - OFF2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
507 SENS = SENS - SENS2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
508
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
509 P = (int32_t)(((((int64_t)D1) * SENS) / POW2_21 - OFF) / POW2_13);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
510
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
511 ambient_temperature = ((float)T) / 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
512 ambient_pressure_mbar = ((float)P) / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
513 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
514
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
515
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
516 void pressure_calculation_old(void) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
517 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
518 double ambient_temperature_centigrad = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
519 double ambient_pressure_decimbar = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
520
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
521 // static for debug
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
522 static int64_t dt = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
523 static int64_t temp = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
524 static int64_t ms_off = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
525 static int64_t sens = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
526 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
527 static int64_t ms_off2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
528 static int64_t sens2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
529 static int64_t t2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
530
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
531 /* info
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
532 uint16_t C[8] = { 1 };
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
533 uint32_t D1 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
534 uint32_t D2 = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
535 uint8_t n_crc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
536 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
537 if((D2 == 0) || (D1 == 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
538 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
539 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
540
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
541 // dT = D2 - C[5] * POW2_8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
542 // T = 2000 + (dT * C[6]) / POW2_23;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
543 dt = (int64_t)D2 - C5_x_2p8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
544 //temp ; // in 10 milliGrad Celcius
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
545 ambient_temperature_centigrad = 2000 + dt * C[6] / 8388608;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
546
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
547
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
548 if(ambient_temperature_centigrad < 2000) // low temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
549 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
550 t2 = 3 * dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
551 t2 *= dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
552 t2 /= 8589934592;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
553 ms_off2 = ambient_temperature_centigrad - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
554 ms_off2 *= ms_off2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
555 sens2 = ms_off2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
556 ms_off2 *= 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
557 ms_off2 /= 2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
558 sens2 *= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
559 sens2 /= 8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
560 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
561 else // high temperature
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
562 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
563 t2 = 7 * dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
564 t2 *= dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
565 t2 /= 137438953472;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
566 ms_off2 = ambient_temperature_centigrad - 2000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
567 ms_off2 *= ms_off2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
568 ms_off2 /= 16;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
569 sens2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
570 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
571
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
572
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
573 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
574
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
575 // pressure
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
576 // OFF = C[2] * POW2_16 + dT * C[4] / POW2_7;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
577 // SENS = C[1] * POW2_15 + dT * C[3] / POW2_8;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
578 ms_off = C[4] * dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
579 ms_off /= 128;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
580 ms_off += C2_x_2p16;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
581 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
582 sens = C[3] * dt;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
583 sens /= 256;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
584 sens += C1_x_2p15;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
585
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
586 // 2nd order correction
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
587 ambient_temperature_centigrad -= t2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
588 ms_off -= ms_off2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
589 sens -= sens2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
590
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
591 ambient_temperature = ambient_temperature_centigrad / 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
592 // P = (D1 * SENS / POW2_21 - OFF) / POW2_13;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
593 temp = D1 * sens;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
594 temp /= 2097152;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
595 temp -= ms_off;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
596 temp /= 8192;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
597 ambient_pressure_decimbar = temp; // to float/double
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
598 ambient_pressure_mbar = ambient_pressure_decimbar / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
599 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
600
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
601
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
602 /* taken from AN520 by meas-spec.com dated 9. Aug. 2011
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
603 * short and int are both 16bit according to AVR/GCC google results
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
604 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
605 uint8_t crc4(uint16_t n_prom[])
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
606 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
607 uint16_t cnt; // simple counter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
608 uint16_t n_rem; // crc reminder
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
609 uint16_t crc_read; // original value of the crc
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
610 uint8_t n_bit;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
611 n_rem = 0x00;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
612 crc_read=n_prom[7]; //save read CRC
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
613 n_prom[7]=(0xFF00 & (n_prom[7])); //CRC byte is replaced by 0
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
614 for (cnt = 0; cnt < 16; cnt++) // operation is performed on bytes
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
615 { // choose LSB or MSB
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
616 if (cnt%2==1) n_rem ^= (uint16_t) ((n_prom[cnt>>1]) & 0x00FF);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
617 else n_rem ^= (uint16_t) (n_prom[cnt>>1]>>8);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
618 for (n_bit = 8; n_bit > 0; n_bit--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
619 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
620 if (n_rem & (0x8000))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
621 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
622 n_rem = (n_rem << 1) ^ 0x3000;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
623 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
624 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
625 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
626 n_rem = (n_rem << 1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
627 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
628 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
629 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
630 n_rem= (0x000F & (n_rem >> 12)); // // final 4-bit reminder is CRC code
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
631 n_prom[7]=crc_read; // restore the crc_read to its original place
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
632 return (n_rem ^ 0x00);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
633 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
634 /*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
635 void test_calculation(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
636 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
637 C1 = 29112;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
638 C2 = 26814;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
639 C3 = 19125;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
640 C4 = 17865;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
641 C5 = 32057;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
642 C6 = 31305;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
643
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
644 C2_x_2p16 = C2 * 65536;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
645 C1_x_2p15 = C1 * 32768;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
646
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
647 D1 = 4944364;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
648 D2 = 8198974;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
649 pressure_calculation() ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
650 };
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
651 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
652