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 #include "platform.h"
  22 #include "target.h"
  23 #include "drivers/barometer/barometer.h"
  24 #include "drivers/bus.h"
  25
  26 void bmp085Calculate(int32_t *pressure, int32_t *temperature);
  27 extern uint32_t bmp085_up;
  28 extern uint16_t bmp085_ut;
  29
  30 typedef struct {
  31     int16_t ac1;
  32     int16_t ac2;
  33     int16_t ac3;
  34     uint16_t ac4;
  35     uint16_t ac5;
  36     uint16_t ac6;
  37     int16_t b1;
  38     int16_t b2;
  39     int16_t mb;
  40     int16_t mc;
  41     int16_t md;
  42 } bmp085_smd500_calibration_param_t;
  43
  44 typedef struct {
  45     bmp085_smd500_calibration_param_t cal_param;
  46     uint8_t mode;
  47     uint8_t chip_id, ml_version, al_version;
  48     uint8_t dev_addr;
  49     int32_t param_b5;
  50     int16_t oversampling_setting;
  51 } bmp085_t;
  52
  53 bmp085_t bmp085;
  54
  55 }
  56
  57
  58 #include "unittest_macros.h"
  59 #include "gtest/gtest.h"
  60
  61
  62 TEST(baroBmp085Test, TestBmp085CalculateOss0)
  63 {
  64
  65     // given
  66     int32_t pressure, temperature;
  67     bmp085_up = 23843; // Digital pressure value
  68     bmp085_ut = 27898; // Digital temperature value
  69
  70     // and
  71     bmp085.cal_param.ac1 = 408;
  72     bmp085.cal_param.ac2 = -72;
  73     bmp085.cal_param.ac3 = -14383;
  74     bmp085.cal_param.ac4 = 32741;
  75     bmp085.cal_param.ac5 = 32757;
  76     bmp085.cal_param.ac6 = 23153;
  77     bmp085.cal_param.b1 = 6190;
  78     bmp085.cal_param.b2 = 4;
  79     bmp085.cal_param.mb = -32767;
  80     bmp085.cal_param.mc = -8711;
  81     bmp085.cal_param.md = 2868;
  82     bmp085.oversampling_setting = 0;
  83
  84     // when
  85     bmp085Calculate(&pressure, &temperature);
  86
  87     // then
  88     EXPECT_EQ(69964, pressure); // Datasheet says 69965
  89     EXPECT_EQ(1500, temperature);
  90
  91 }
  92
  93 TEST(baroBmp085Test, TestBmp085CalculateOss3)
  94 {
  95
  96     // given
  97     int32_t pressure, temperature;
  98     bmp085_up = 271097; // Digital pressure value
  99     bmp085_ut = 27898; // Digital temperature value
 100
 101     // and
 102     bmp085.cal_param.ac1 = 408;
 103     bmp085.cal_param.ac2 = -72;
 104     bmp085.cal_param.ac3 = -14383;
 105     bmp085.cal_param.ac4 = 32741;
 106     bmp085.cal_param.ac5 = 32757;
 107     bmp085.cal_param.ac6 = 23153;
 108     bmp085.cal_param.b1 = 6190;
 109     bmp085.cal_param.b2 = 4;
 110     bmp085.cal_param.mb = -32767;
 111     bmp085.cal_param.mc = -8711;
 112     bmp085.cal_param.md = 2868;
 113     bmp085.oversampling_setting = 3;
 114
 115     // when
 116     bmp085Calculate(&pressure, &temperature);
 117
 118     // then
 119     EXPECT_EQ(99998, pressure);
 120     EXPECT_EQ(1500, temperature);
 121
 122 }
 123
 124 TEST(baroBmp085Test, TestBmp085CalculateOss3Cold)
 125 {
 126
 127     // given
 128     int32_t pressure, temperature;
 129     bmp085_up = 271097; // Digital pressure value
 130     bmp085_ut = 24342; // Digital temperature value  24342 = -20degC    27898 = 15degC
 131
 132     // and
 133     bmp085.cal_param.ac1 = 408;
 134     bmp085.cal_param.ac2 = -72;
 135     bmp085.cal_param.ac3 = -14383;
 136     bmp085.cal_param.ac4 = 32741;
 137     bmp085.cal_param.ac5 = 32757;
 138     bmp085.cal_param.ac6 = 23153;
 139     bmp085.cal_param.b1 = 6190;
 140     bmp085.cal_param.b2 = 4;
 141     bmp085.cal_param.mb = -32767;
 142     bmp085.cal_param.mc = -8711;
 143     bmp085.cal_param.md = 2868;
 144     bmp085.oversampling_setting = 3;
 145
 146     // when
 147     bmp085Calculate(&pressure, &temperature);
 148
 149     // then
 150     EXPECT_EQ(92251, pressure);
 151     EXPECT_EQ(-2006, temperature); // -20.06 degC
 152
 153 }
 154
 155 TEST(baroBmp085Test, TestBmp085CalculateOss3Hot)
 156 {
 157
 158     // given
 159     int32_t pressure, temperature;
 160     bmp085_up = 271097; // Digital pressure value
 161     bmp085_ut = 33315; // Digital temperature value
 162
 163     // and
 164     bmp085.cal_param.ac1 = 408;
 165     bmp085.cal_param.ac2 = -72;
 166     bmp085.cal_param.ac3 = -14383;
 167     bmp085.cal_param.ac4 = 32741;
 168     bmp085.cal_param.ac5 = 32757;
 169     bmp085.cal_param.ac6 = 23153;
 170     bmp085.cal_param.b1 = 6190;
 171     bmp085.cal_param.b2 = 4;
 172     bmp085.cal_param.mb = -32767;
 173     bmp085.cal_param.mc = -8711;
 174     bmp085.cal_param.md = 2868;
 175     bmp085.oversampling_setting = 3;
 176
 177     // when
 178     bmp085Calculate(&pressure, &temperature);
 179
 180     // then
 181     EXPECT_EQ(108922, pressure);
 182     EXPECT_EQ(5493, temperature); // 54.93 degC
 183
 184 }
 185
 186 // STUBS
 187
 188 extern "C" {
 189
 190     void gpioInit() {}
 191     void RCC_APB2PeriphClockCmd() {}
 192     void delay(uint32_t) {}
 193     void delayMicroseconds(uint32_t) {}
 194     bool busReadRegisterBuffer(const extDevice_t*, uint8_t, uint8_t*, uint8_t) {return true;}
 195     bool busWriteRegister(const extDevice_t*, uint8_t, uint8_t) {return true;}
 196     void IOConfigGPIO() {}
 197     void IOHi() {}
 198     void IOLo() {}
 199     void IOInit() {}
 200     void IOGetByTag() {}
 201     bool busBusy(const extDevice_t*, bool*) {return false;}
 202     void busDeviceRegister(const extDevice_t*) {}
 203     bool busReadRegisterBufferStart(const extDevice_t*, uint8_t, uint8_t*, uint8_t) {return true;}
 204     bool busWriteRegisterStart(const extDevice_t*, uint8_t, uint8_t) {return true;}
 205 }