src/test/unit/baro_bmp085_unittest.cc

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 #include <stdint.h>
  18
  19 extern "C" {
  20
  21     void bmp085_calculate(int32_t *pressure, int32_t *temperature);
  22     extern uint32_t bmp085_up;
  23     extern uint16_t bmp085_ut;
  24
  25 typedef struct {
  26     int16_t ac1;
  27     int16_t ac2;
  28     int16_t ac3;
  29     uint16_t ac4;
  30     uint16_t ac5;
  31     uint16_t ac6;
  32     int16_t b1;
  33     int16_t b2;
  34     int16_t mb;
  35     int16_t mc;
  36     int16_t md;
  37 } bmp085_smd500_calibration_param_t;
  38
  39 typedef struct {
  40     bmp085_smd500_calibration_param_t cal_param;
  41     uint8_t mode;
  42     uint8_t chip_id, ml_version, al_version;
  43     uint8_t dev_addr;
  44     int32_t param_b5;
  45     int16_t oversampling_setting;
  46 } bmp085_t;
  47
  48     bmp085_t bmp085;
  49
  50 }
  51
  52
  53 #include "unittest_macros.h"
  54 #include "gtest/gtest.h"
  55
  56
  57 TEST(baroBmp085Test, TestBmp085CalculateOss0)
  58 {
  59
  60     // given
  61     int32_t pressure, temperature;
  62     bmp085_up = 23843; // Digital pressure value
  63     bmp085_ut = 27898; // Digital temperature value
  64
  65     // and
  66     bmp085.cal_param.ac1 = 408;
  67     bmp085.cal_param.ac2 = -72;
  68     bmp085.cal_param.ac3 = -14383;
  69     bmp085.cal_param.ac4 = 32741;
  70     bmp085.cal_param.ac5 = 32757;
  71     bmp085.cal_param.ac6 = 23153;
  72     bmp085.cal_param.b1 = 6190;
  73     bmp085.cal_param.b2 = 4;
  74     bmp085.cal_param.mb = -32767;
  75     bmp085.cal_param.mc = -8711;
  76     bmp085.cal_param.md = 2868;
  77     bmp085.oversampling_setting = 0;
  78
  79     // when
  80     bmp085_calculate(&pressure, &temperature);
  81
  82     // then
  83     EXPECT_EQ(69964, pressure); // Datasheet says 69965
  84     EXPECT_EQ(1500, temperature);
  85
  86 }
  87
  88 TEST(baroBmp085Test, TestBmp085CalculateOss3)
  89 {
  90
  91     // given
  92     int32_t pressure, temperature;
  93     bmp085_up = 271097; // Digital pressure value
  94     bmp085_ut = 27898; // Digital temperature value
  95
  96     // and
  97     bmp085.cal_param.ac1 = 408;
  98     bmp085.cal_param.ac2 = -72;
  99     bmp085.cal_param.ac3 = -14383;
 100     bmp085.cal_param.ac4 = 32741;
 101     bmp085.cal_param.ac5 = 32757;
 102     bmp085.cal_param.ac6 = 23153;
 103     bmp085.cal_param.b1 = 6190;
 104     bmp085.cal_param.b2 = 4;
 105     bmp085.cal_param.mb = -32767;
 106     bmp085.cal_param.mc = -8711;
 107     bmp085.cal_param.md = 2868;
 108     bmp085.oversampling_setting = 3;
 109
 110     // when
 111     bmp085_calculate(&pressure, &temperature);
 112
 113     // then
 114     EXPECT_EQ(99998, pressure);
 115     EXPECT_EQ(1500, temperature);
 116
 117 }
 118
 119 TEST(baroBmp085Test, TestBmp085CalculateOss3Cold)
 120 {
 121
 122     // given
 123     int32_t pressure, temperature;
 124     bmp085_up = 271097; // Digital pressure value
 125     bmp085_ut = 24342; // Digital temperature value  24342 = -20degC    27898 = 15degC
 126
 127     // and
 128     bmp085.cal_param.ac1 = 408;
 129     bmp085.cal_param.ac2 = -72;
 130     bmp085.cal_param.ac3 = -14383;
 131     bmp085.cal_param.ac4 = 32741;
 132     bmp085.cal_param.ac5 = 32757;
 133     bmp085.cal_param.ac6 = 23153;
 134     bmp085.cal_param.b1 = 6190;
 135     bmp085.cal_param.b2 = 4;
 136     bmp085.cal_param.mb = -32767;
 137     bmp085.cal_param.mc = -8711;
 138     bmp085.cal_param.md = 2868;
 139     bmp085.oversampling_setting = 3;
 140
 141     // when
 142     bmp085_calculate(&pressure, &temperature);
 143
 144     // then
 145     EXPECT_EQ(92251, pressure);
 146     EXPECT_EQ(-2006, temperature); // -20.06 degC
 147
 148 }
 149
 150 TEST(baroBmp085Test, TestBmp085CalculateOss3Hot)
 151 {
 152
 153     // given
 154     int32_t pressure, temperature;
 155     bmp085_up = 271097; // Digital pressure value
 156     bmp085_ut = 33315; // Digital temperature value
 157
 158     // and
 159     bmp085.cal_param.ac1 = 408;
 160     bmp085.cal_param.ac2 = -72;
 161     bmp085.cal_param.ac3 = -14383;
 162     bmp085.cal_param.ac4 = 32741;
 163     bmp085.cal_param.ac5 = 32757;
 164     bmp085.cal_param.ac6 = 23153;
 165     bmp085.cal_param.b1 = 6190;
 166     bmp085.cal_param.b2 = 4;
 167     bmp085.cal_param.mb = -32767;
 168     bmp085.cal_param.mc = -8711;
 169     bmp085.cal_param.md = 2868;
 170     bmp085.oversampling_setting = 3;
 171
 172     // when
 173     bmp085_calculate(&pressure, &temperature);
 174
 175     // then
 176     EXPECT_EQ(108922, pressure);
 177     EXPECT_EQ(5493, temperature); // 54.93 degC
 178
 179 }
 180
 181 // STUBS
 182
 183 extern "C" {
 184
 185     void gpioInit() {}
 186     void RCC_APB2PeriphClockCmd() {}
 187     void delay(uint32_t) {}
 188     void delayMicroseconds(uint32_t) {}
 189     bool i2cWrite(uint8_t, uint8_t, uint8_t) {
 190         return 1;
 191     }
 192     bool i2cRead(uint8_t, uint8_t, uint8_t, uint8_t) {
 193         return 1;
 194     }
 195
 196 }