mirror of
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d345006c03
This commit attempts to use a more cmake-friendly approach when
handling inter-target dependencies. A combination of macros and
include_directories usage provided overzealous compile -I/blah
entries which equates to large catch-all build commands. For
example, the last CXX target contains include directories for nearly
all preceeding targets (~190). Library dependencies were also often
wrong or missing.
* Removed nearly all used of include_directories (swig cmake
commands still appear to need these for generating the swig
command line)
* Updated usage of target_link_libraries in upm_module_init,
also changed to using target_include_directories per target.
This greatly simplifies upm/mixed_module_init usage for libraries
which depend on other libraries (in this project).
example (src/tb7300/CMakeLists.txt)
old:
# upm-libbacnetmstp will bring in libbacnet, I hope
set (reqlibname "upm-bacnetmstp")
include_directories(${BACNET_INCLUDE_DIRS})
include_directories("../bacnetmstp")
upm_module_init()
upm_target_link_libraries(${libname} bacnetmstp)
new:
upm_module_init(bacnetmstp)
The reason here, is that tb7300 depends on bacnetmstp, which
depends on BACNET includes/libs, so tb7300 gets the headers and
libraries transitively via its dependency on bacnetmstp.
* Updated pkg-config .pc file generation flow to reflect changes
with dependencies.
* Create a real target for the interfaces (CXX abstract sensor
classes). Renamed the directory from 'upm/src/upm' to
'upm/src/interfaces' Also changed the install location of the
interface headers to include/upm/interfaces. Updated interface
header usage to reflect this.
* Updated a few sensor libs to use fwd declarations for mraa.
Ideally the UPM libs would do more of this which eases the
burden on anyone building on top of the sensor libraries since
they would not need to know about mraa headers.
* Fixed examples which use symbols not defined in local includes
Signed-off-by: Noel Eck <noel.eck@intel.com>
491 lines
15 KiB
C++
491 lines
15 KiB
C++
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <string>
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#include <mraa/i2c.hpp>
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#include <mraa/spi.hpp>
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#include <mraa/gpio.hpp>
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#include "interfaces/iPressureSensor.hpp"
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#include "interfaces/iTemperatureSensor.hpp"
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#define BMP280_DEFAULT_I2C_BUS 0
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#define BMP280_DEFAULT_SPI_BUS 0
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#define BMP280_DEFAULT_ADDR 0x77
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#define BMP280_DEFAULT_CHIPID 0x58
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namespace upm {
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/**
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* @brief BMP280 Digital Pressure Sensor
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* @defgroup bmp280 libupm-bmp280
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* @ingroup i2c spi gpio pressure
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*/
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/**
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* @library bmp280
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* @sensor bmp280
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* @comname BMP280 Digital Pressure Sensor
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* @type pressure
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* @man adafruit
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* @con i2c spi gpio
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* @web https://www.adafruit.com/products/2651
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*
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* @brief API for the BMP280 Digital Pressure Sensor
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*
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* The BMP280 is an absolute barometric pressure sensor especially
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* designed for mobile applications. The sensor module is housed in
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* an extremely compact 8-pin metal-lid LGA package with a footprint
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* of only 2.0 * 2.5 mm2 and 0.95 mm package height. Its small
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* dimensions and its low power consumption of 2.7 uA @1Hz allow the
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* implementation in battery driven devices such as mobile phones,
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* GPS modules or watches.
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*
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* As the successor to the widely adopted BMP180, the BMP280
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* delivers high performance in all applications that require
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* precise pressure measurement. The BMP280 operates at lower noise,
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* supports new filter modes and an SPI interface within a footprint
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* 63% smaller than the BMP180.
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*
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* @snippet bmp280.cxx Interesting
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*/
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class BMP280 : public ITemperatureSensor, public IPressureSensor {
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public:
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// special reset byte
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const uint8_t BMP280_RESET_BYTE = 0xb6;
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// number of bytes of stored calibration data
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const int CALIBRATION_BYTES = 26;
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/**
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* BMP280 registers
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*/
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typedef enum : uint8_t {
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// Do not write into reserved bits.
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// read-only factory calibration data
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REG_CALIB00 = 0x88,
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REG_CALIB01 = 0x89,
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REG_CALIB02 = 0x8a,
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REG_CALIB03 = 0x8b,
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REG_CALIB04 = 0x8c,
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REG_CALIB05 = 0x8d,
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REG_CALIB06 = 0x8e,
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REG_CALIB07 = 0x8f,
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REG_CALIB08 = 0x90,
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REG_CALIB09 = 0x91,
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REG_CALIB10 = 0x92,
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REG_CALIB11 = 0x93,
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REG_CALIB12 = 0x94,
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REG_CALIB13 = 0x95,
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REG_CALIB14 = 0x96,
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REG_CALIB15 = 0x97,
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REG_CALIB16 = 0x98,
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REG_CALIB17 = 0x99,
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REG_CALIB18 = 0x9a,
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REG_CALIB19 = 0x9b,
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REG_CALIB20 = 0x9c,
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REG_CALIB21 = 0x9d,
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REG_CALIB22 = 0x9e,
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REG_CALIB23 = 0x9f,
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REG_CALIB24 = 0xa0,
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REG_CALIB25 = 0xa1,
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REG_CHIPID = 0xd0,
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REG_RESET = 0xe0,
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REG_STATUS = 0xf3,
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REG_CTRL_MEAS = 0xf4,
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REG_CONFIG = 0xf5,
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REG_PRESSURE_MSB = 0xf7,
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REG_PRESSURE_LSB = 0xf8,
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REG_PRESSURE_XLSB = 0xf9,
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REG_TEMPERATURE_MSB = 0xfa,
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REG_TEMPERATURE_LSB = 0xfb,
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REG_TEMPERATURE_XLSB = 0xfc
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} BMP280_REGS_T;
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/**
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* REG_CONFIG bits
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*/
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typedef enum {
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CONFIG_SPI3W_EN = 0x01,
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// 0x02 reserved
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CONFIG_FILTER0 = 0x04,
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CONFIG_FILTER1 = 0x08,
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CONFIG_FILTER2 = 0x10,
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_CONFIG_FILTER_MASK = 7,
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_CONFIG_FILTER_SHIFT = 2,
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CONFIG_T_SB0 = 0x20,
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CONFIG_T_SB1 = 0x40,
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CONFIG_T_SB2 = 0x80,
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_CONFIG_T_SB_MASK = 7,
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_CONFIG_T_SB_SHIFT = 5
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} CONFIG_BITS_T;
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/**
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* FILTER values (samples to reach >= 75% of step response)
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*/
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typedef enum {
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FILTER_OFF = 0, // 1 samples
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FILTER_2 = 1, // 2
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FILTER_4 = 2, // 5
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FILTER_8 = 3, // 11
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FILTER_16 = 4 // 22
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} FILTER_T;
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/**
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* T_SB values (timer standby)
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*/
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typedef enum {
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T_SB_0_5 = 0, // 0.5ms
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T_SB_62_5 = 1, // 62.5ms
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T_SB_125 = 2, // 125ms
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T_SB_250 = 3,
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T_SB_500 = 4,
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T_SB_1000 = 5,
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T_SB_2000 = 6, // bme280 - 10ms
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T_SB_4000 = 7 // bme280 - 20ms
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} T_SB_T;
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/**
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* REG_CTRL_MEAS bits
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*/
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typedef enum {
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CTRL_MEAS_MODE0 = 0x01,
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CTRL_MEAS_MODE1 = 0x02,
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_CTRL_MEAS_MODE_MASK = 3,
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_CTRL_MEAS_MODE_SHIFT = 0,
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CTRL_MEAS_OSRS_P0 = 0x04,
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CTRL_MEAS_OSRS_P1 = 0x08,
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CTRL_MEAS_OSRS_P2 = 0x10,
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_CTRL_MEAS_OSRS_P_MASK = 7,
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_CTRL_MEAS_OSRS_P_SHIFT = 2,
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CTRL_MEAS_OSRS_T0 = 0x04,
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CTRL_MEAS_OSRS_T1 = 0x08,
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CTRL_MEAS_OSRS_T2 = 0x10,
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_CTRL_MEAS_OSRS_T_MASK = 7,
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_CTRL_MEAS_OSRS_T_SHIFT = 5
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} CTRL_MEAS_T;
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/**
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* CTRL_MEAS_MODE values
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*/
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typedef enum {
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MODE_SLEEP = 0,
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MODE_FORCED = 1,
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// 2 is also FORCED mode
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MODE_NORMAL = 3
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} MODES_T;
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/**
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* CTRL_MEAS_OSRS_P values
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*/
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typedef enum {
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OSRS_P_SKIPPED = 0,
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OSRS_P_OVERSAMPLING_1 = 1, // x1
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OSRS_P_OVERSAMPLING_2 = 2, // x2
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OSRS_P_OVERSAMPLING_4 = 3,
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OSRS_P_OVERSAMPLING_8 = 4,
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OSRS_P_OVERSAMPLING_16 = 5
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} OSRS_P_T;
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/**
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* CTRL_MEAS_OSRS_T values
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*/
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typedef enum {
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OSRS_T_SKIPPED = 0,
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OSRS_T_OVERSAMPLING_1 = 1, // x1
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OSRS_T_OVERSAMPLING_2 = 2, // x2
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OSRS_T_OVERSAMPLING_4 = 3,
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OSRS_T_OVERSAMPLING_8 = 4,
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OSRS_T_OVERSAMPLING_16 = 5
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} OSRS_T_T;
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/**
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* REG_STATUS bits
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*/
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typedef enum {
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STATUS_IM_UPDATE = 0x01,
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// 0x02-0x04 reserved
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STATUS_MEASURING = 0x08
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// 0x10-0x80 reserved
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} STATUS_T;
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/**
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* USAGE_MODE values. This is a fake specification to configure
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* the various knobs based on their typical use modes, as
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* recommended by Bosch.
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*/
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typedef enum {
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USAGE_MODE_HANDHELD_LOW_POWER = 0,
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USAGE_MODE_HANDHELD_DYNAMIC = 1,
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USAGE_MODE_WEATHER_MONITOR = 2, // lowest power consumption
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USAGE_MODE_FLOOR_CHG_DETECT = 3,
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USAGE_MODE_DROP_DETECT = 4,
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USAGE_MODE_INDOOR_NAV = 5 // highest resolution
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} USAGE_MODE_T;
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/**
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* BMP280 constructor.
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*
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* This device can support both I2C and SPI. For SPI, set the addr
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* to -1, and specify a positive integer representing the Chip
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* Select (CS) pin for the cs argument. If you are using a
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* hardware CS pin, then you can connect the proper pin to the
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* hardware CS pin on your MCU and supply -1 for cs. The default
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* operating mode is I2C.
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*
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* @param bus I2C or SPI bus to use.
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* @param address The address for this device. -1 for SPI.
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* @param cs The gpio pin to use for the SPI Chip Select. -1 for
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* I2C or for SPI with a hardware controlled pin.
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* @param theChipID The chip ID to use for validation
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*/
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BMP280(int bus=BMP280_DEFAULT_I2C_BUS, int addr=BMP280_DEFAULT_ADDR,
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int cs=-1, uint8_t theChipID=BMP280_DEFAULT_CHIPID);
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/**
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* BMP280 Destructor.
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*/
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virtual ~BMP280();
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/**
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* Update the internal stored values from sensor data.
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*/
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virtual void update();
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/**
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* Return the chip ID.
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*
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* @return The chip ID (BMP280_CHIPID).
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*/
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uint8_t getChipID();
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/**
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* Reset the sensor, as if by a power-on-reset.
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*/
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void reset();
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/**
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* Return the current measured temperature. Note, this is not
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* ambient temperature - this is the temperature used to fine tune
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* the pressure measurement. update() must have been called prior
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* to calling this method.
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*
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* @param fahrenheit true to return data in Fahrenheit, false for
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* Celicus. Celsius is the default.
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* @return The temperature in degrees Celsius or Fahrenheit.
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*/
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float getTemperature(bool fahrenheit=false);
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/**
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* Return the current measured pressure in Pascals (Pa). update()
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* must have been called prior to calling this method.
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*
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* @return The pressure in Pascals (Pa).
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*/
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float getPressure();
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/**
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* Return the current computed altitude in meters. update()
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* must have been called prior to calling this method.
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*
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* @param seaLevelhPA The pressure at sea level in hectoPascals
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* (hPa). The default is 1013.25 hPA, (101325 Pa).
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* @return The computed altitude in meters.
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*/
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float getAltitude(float seaLevelhPA=1013.25);
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/**
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* Set a general usage mode. This function can be used to
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* configure the filters and oversampling for a particular use
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* case. These setting are documented in the BMP280 datasheet.
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* The default mode set in the constructor is
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* USAGE_MODE_INDOOR_NAV, the highest resolution mode.
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*
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* @param mode One of the USAGE_MODE_T values.
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*/
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virtual void setUsageMode(USAGE_MODE_T mode);
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/**
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* Set the temperature sensor oversampling parameter. See the
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* data sheet for details. This value can be automatically set to
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* a suitable value by using one of the predefined modes for
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* setUsageMode().
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*
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* @param mode One of the OSRS_T_T values.
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*/
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void setOversampleRateTemperature(OSRS_T_T rate);
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/**
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* Set the pressure sensor oversampling parameter. See the
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* data sheet for details. This value can be automatically set to
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* a suitable value by using one of the predefined modes for
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* setUsageMode().
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*
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* @param mode One of the OSRS_P_T values.
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*/
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void setOversampleRatePressure(OSRS_P_T rate);
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/**
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* Set the timer standby value. When in NORMAL operating mode,
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* this timer governs how long the chip will wait before
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* performing a measurement. See the data sheet for details.
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*
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* @param mode One of the T_SB_T values.
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*/
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void setTimerStandby(T_SB_T tsb);
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/**
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* Set the IIR filtering parameter. See the data sheet for
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* details. This value can be automatically set to a suitable
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* value by using one of the predefined modes for setUsageMode().
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*
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* @param mode One of the FILTER_T values.
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*/
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void setFilter(FILTER_T filter);
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/**
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* Set the default measuring mode. Basic values are forced,
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* sleep, and normal. See the data sheet for details. This value
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* can be automatically set to a suitable value by using one of
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* the predefined modes for setUsageMode().
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*
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* @param mode One of the MODES_T values.
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*/
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void setMeasureMode(MODES_T mode);
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// Interface support
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const char *getModuleName()
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{
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return "BMP280";
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};
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int getTemperatureCelsius()
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{
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return int(getTemperature(false));
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};
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int getPressurePa()
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{
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return int(getPressure());
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};
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protected:
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mraa::I2c *m_i2c;
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mraa::Spi *m_spi;
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mraa::Gpio *m_gpioCS;
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uint8_t m_addr;
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// always stored in C
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float m_temperature;
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// pressure in Pa
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float m_pressure;
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// shared calibration data - set in temp conversion, used in
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// pressure conversion.
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int32_t m_t_fine;
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// current operating mode. MODE_FORCED requires special attention
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// in update()
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MODES_T m_mode;
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// return the status register
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uint8_t getStatus();
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/**
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* Read a register.
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*
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* @param reg The register to read
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* @return The value of the register
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*/
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uint8_t readReg(uint8_t reg);
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/**
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* Read contiguous registers into a buffer.
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*
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* @param buffer The buffer to store the results
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* @param len The number of registers to read
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* @return The number of bytes read, or -1 on error
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*/
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int readRegs(uint8_t reg, uint8_t *buffer, int len);
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/**
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* Write to a register
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*
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* @param reg The register to write to
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* @param val The value to write
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*/
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void writeReg(uint8_t reg, uint8_t val);
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// clear member data...
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void clearData();
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// read the calibration data
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virtual void readCalibrationData();
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// SPI chip select
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void csOn();
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void csOff();
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private:
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// are we doing SPI?
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bool m_isSPI;
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// calibration data temperature
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uint16_t m_dig_T1;
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int16_t m_dig_T2;
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int16_t m_dig_T3;
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// calibration data pressure
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uint16_t m_dig_P1;
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int16_t m_dig_P2;
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int16_t m_dig_P3;
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int16_t m_dig_P4;
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int16_t m_dig_P5;
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int16_t m_dig_P6;
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int16_t m_dig_P7;
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int16_t m_dig_P8;
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int16_t m_dig_P9;
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// Bosch supplied conversion/compensation functions from the
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// datasheet.
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int32_t bmp280_compensate_T_int32(int32_t adc_T);
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uint32_t bmp280_compensate_P_int64(int32_t adc_P);
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};
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}
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