src/main/drivers/barometer/barometer_spl06.h

   1 /*
   2  * This file is part of INAV.
   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
  18 #pragma once
  19
  20 #define SPL06_I2C_ADDR                         0x76
  21 #define SPL06_DEFAULT_CHIP_ID                  0x10
  22
  23 #define SPL06_PRESSURE_START_REG               0x00
  24 #define SPL06_PRESSURE_LEN                     3       // 24 bits, 3 bytes
  25 #define SPL06_PRESSURE_B2_REG                  0x00    // Pressure MSB Register
  26 #define SPL06_PRESSURE_B1_REG                  0x01    // Pressure middle byte Register
  27 #define SPL06_PRESSURE_B0_REG                  0x02    // Pressure LSB Register
  28 #define SPL06_TEMPERATURE_START_REG            0x03
  29 #define SPL06_TEMPERATURE_LEN                  3       // 24 bits, 3 bytes
  30 #define SPL06_TEMPERATURE_B2_REG               0x03    // Temperature MSB Register
  31 #define SPL06_TEMPERATURE_B1_REG               0x04    // Temperature middle byte Register
  32 #define SPL06_TEMPERATURE_B0_REG               0x05    // Temperature LSB Register
  33 #define SPL06_PRESSURE_CFG_REG                 0x06    // Pressure config
  34 #define SPL06_TEMPERATURE_CFG_REG              0x07    // Temperature config
  35 #define SPL06_MODE_AND_STATUS_REG              0x08    // Mode and status
  36 #define SPL06_INT_AND_FIFO_CFG_REG             0x09    // Interrupt and FIFO config
  37 #define SPL06_INT_STATUS_REG                   0x0A    // Interrupt and FIFO config
  38 #define SPL06_FIFO_STATUS_REG                  0x0B    // Interrupt and FIFO config
  39 #define SPL06_RST_REG                          0x0C    // Softreset Register
  40 #define SPL06_CHIP_ID_REG                      0x0D    // Chip ID Register
  41 #define SPL06_CALIB_COEFFS_START               0x10
  42 #define SPL06_CALIB_COEFFS_END                 0x21
  43
  44 #define SPL06_CALIB_COEFFS_LEN                 (SPL06_CALIB_COEFFS_END - SPL06_CALIB_COEFFS_START + 1)
  45
  46 // TEMPERATURE_CFG_REG
  47 #define SPL06_TEMP_USE_EXT_SENSOR              (1<<7)
  48
  49 // MODE_AND_STATUS_REG
  50 #define SPL06_MEAS_PRESSURE                    (1<<0)  // measure pressure
  51 #define SPL06_MEAS_TEMPERATURE                 (1<<1)  // measure temperature
  52
  53 #define SPL06_MEAS_CFG_CONTINUOUS              (1<<2)
  54 #define SPL06_MEAS_CFG_PRESSURE_RDY            (1<<4)
  55 #define SPL06_MEAS_CFG_TEMPERATURE_RDY         (1<<5)
  56 #define SPL06_MEAS_CFG_SENSOR_RDY              (1<<6)
  57 #define SPL06_MEAS_CFG_COEFFS_RDY              (1<<7)
  58
  59 // INT_AND_FIFO_CFG_REG
  60 #define SPL06_PRESSURE_RESULT_BIT_SHIFT        (1<<2)  // necessary for pressure oversampling > 8
  61 #define SPL06_TEMPERATURE_RESULT_BIT_SHIFT     (1<<3)  // necessary for temperature oversampling > 8
  62
  63 #define SPL06_PRESSURE_OVERSAMPLING            8       // oversampling 8
  64 #define SPL06_TEMPERATURE_OVERSAMPLING         8       // oversampling 8
  65
  66 #define SPL06_MEASUREMENT_TIME(oversampling)   ((2 + lrintf(oversampling * 1.6)) + 1) // ms
  67
  68 bool spl06Detect(baroDev_t *baro);
  69