Aleksandrs Gumenuks / MaximInterface_Extended

Extended MaximInterface

Dependents:   mbed_DS28EC20_GPIO

Devices/DS18B20.hpp@0:f77ad7f72d04, 2017-11-06 (annotated)

Committer:
IanBenzMaxim
Date:
Mon Nov 06 14:39:18 2017 -0600
Revision:
0:f77ad7f72d04
Child:
6:a8c83a2e6fa4
Initial commit.

Who changed what in which revision?

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IanBenzMaxim 0:f77ad7f72d04 1 /*******************************************************************************
IanBenzMaxim 0:f77ad7f72d04 2 * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
IanBenzMaxim 0:f77ad7f72d04 3 *
IanBenzMaxim 0:f77ad7f72d04 4 * Permission is hereby granted, free of charge, to any person obtaining a
IanBenzMaxim 0:f77ad7f72d04 5 * copy of this software and associated documentation files (the "Software"),
IanBenzMaxim 0:f77ad7f72d04 6 * to deal in the Software without restriction, including without limitation
IanBenzMaxim 0:f77ad7f72d04 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
IanBenzMaxim 0:f77ad7f72d04 8 * and/or sell copies of the Software, and to permit persons to whom the
IanBenzMaxim 0:f77ad7f72d04 9 * Software is furnished to do so, subject to the following conditions:
IanBenzMaxim 0:f77ad7f72d04 10 *
IanBenzMaxim 0:f77ad7f72d04 11 * The above copyright notice and this permission notice shall be included
IanBenzMaxim 0:f77ad7f72d04 12 * in all copies or substantial portions of the Software.
IanBenzMaxim 0:f77ad7f72d04 13 *
IanBenzMaxim 0:f77ad7f72d04 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
IanBenzMaxim 0:f77ad7f72d04 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
IanBenzMaxim 0:f77ad7f72d04 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IanBenzMaxim 0:f77ad7f72d04 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
IanBenzMaxim 0:f77ad7f72d04 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
IanBenzMaxim 0:f77ad7f72d04 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
IanBenzMaxim 0:f77ad7f72d04 20 * OTHER DEALINGS IN THE SOFTWARE.
IanBenzMaxim 0:f77ad7f72d04 21 *
IanBenzMaxim 0:f77ad7f72d04 22 * Except as contained in this notice, the name of Maxim Integrated
IanBenzMaxim 0:f77ad7f72d04 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
IanBenzMaxim 0:f77ad7f72d04 24 * Products, Inc. Branding Policy.
IanBenzMaxim 0:f77ad7f72d04 25 *
IanBenzMaxim 0:f77ad7f72d04 26 * The mere transfer of this software does not imply any licenses
IanBenzMaxim 0:f77ad7f72d04 27 * of trade secrets, proprietary technology, copyrights, patents,
IanBenzMaxim 0:f77ad7f72d04 28 * trademarks, maskwork rights, or any other form of intellectual
IanBenzMaxim 0:f77ad7f72d04 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
IanBenzMaxim 0:f77ad7f72d04 30 * ownership rights.
IanBenzMaxim 0:f77ad7f72d04 31 *******************************************************************************/
IanBenzMaxim 0:f77ad7f72d04 32
IanBenzMaxim 0:f77ad7f72d04 33 #ifndef MaximInterface_DS18B20
IanBenzMaxim 0:f77ad7f72d04 34 #define MaximInterface_DS18B20
IanBenzMaxim 0:f77ad7f72d04 35
IanBenzMaxim 0:f77ad7f72d04 36 #include <MaximInterface/Links/SelectRom.hpp>
IanBenzMaxim 0:f77ad7f72d04 37 #include <MaximInterface/Links/Sleep.hpp>
IanBenzMaxim 0:f77ad7f72d04 38 #include <MaximInterface/Utilities/Export.h>
IanBenzMaxim 0:f77ad7f72d04 39
IanBenzMaxim 0:f77ad7f72d04 40 namespace MaximInterface {
IanBenzMaxim 0:f77ad7f72d04 41
IanBenzMaxim 0:f77ad7f72d04 42 /// DS18B20 Programmable Resolution 1-Wire Digital Thermometer
IanBenzMaxim 0:f77ad7f72d04 43 /// @details The DS18B20 digital thermometer provides 9-bit to 12-bit
IanBenzMaxim 0:f77ad7f72d04 44 /// Celsius temperature measurements and has an alarm function with
IanBenzMaxim 0:f77ad7f72d04 45 /// nonvolatile user-programmable upper and lower trigger points. The
IanBenzMaxim 0:f77ad7f72d04 46 /// DS18B20 communicates over a 1-Wire bus that by definition requires
IanBenzMaxim 0:f77ad7f72d04 47 /// only one data line (and ground) for communication with a central
IanBenzMaxim 0:f77ad7f72d04 48 /// microprocessor. In addition, the DS18B20 can derive power directly
IanBenzMaxim 0:f77ad7f72d04 49 /// from the data line ("parasite power"), eliminating the need for an
IanBenzMaxim 0:f77ad7f72d04 50 /// external power supply.
IanBenzMaxim 0:f77ad7f72d04 51 class DS18B20 {
IanBenzMaxim 0:f77ad7f72d04 52 public:
IanBenzMaxim 0:f77ad7f72d04 53 enum ErrorValue { CrcError = 1, DataError };
IanBenzMaxim 0:f77ad7f72d04 54
IanBenzMaxim 0:f77ad7f72d04 55 static const uint_least8_t nineBitResolution = 0x1F;
IanBenzMaxim 0:f77ad7f72d04 56 static const uint_least8_t tenBitResolution = 0x3F;
IanBenzMaxim 0:f77ad7f72d04 57 static const uint_least8_t elevenBitResolution = 0x5F;
IanBenzMaxim 0:f77ad7f72d04 58 static const uint_least8_t twelveBitResolution = 0x7F;
IanBenzMaxim 0:f77ad7f72d04 59
IanBenzMaxim 0:f77ad7f72d04 60 /// Holds the contents of the device scratchpad.
IanBenzMaxim 0:f77ad7f72d04 61 typedef array<uint_least8_t, 8> Scratchpad;
IanBenzMaxim 0:f77ad7f72d04 62
IanBenzMaxim 0:f77ad7f72d04 63 DS18B20(const Sleep & sleep, OneWireMaster & master,
IanBenzMaxim 0:f77ad7f72d04 64 const SelectRom & selectRom)
IanBenzMaxim 0:f77ad7f72d04 65 : selectRom(selectRom), master(&master), sleep(&sleep), resolution(0) {}
IanBenzMaxim 0:f77ad7f72d04 66
IanBenzMaxim 0:f77ad7f72d04 67 void setSleep(const Sleep & sleep) { this->sleep = &sleep; }
IanBenzMaxim 0:f77ad7f72d04 68 void setMaster(OneWireMaster & master) { this->master = &master; }
IanBenzMaxim 0:f77ad7f72d04 69 void setSelectRom(const SelectRom & selectRom) {
IanBenzMaxim 0:f77ad7f72d04 70 this->selectRom = selectRom;
IanBenzMaxim 0:f77ad7f72d04 71 }
IanBenzMaxim 0:f77ad7f72d04 72
IanBenzMaxim 0:f77ad7f72d04 73 /// Initializes the device for first time use.
IanBenzMaxim 0:f77ad7f72d04 74 MaximInterface_EXPORT error_code initialize();
IanBenzMaxim 0:f77ad7f72d04 75
IanBenzMaxim 0:f77ad7f72d04 76 /// Write Scratchpad Command
IanBenzMaxim 0:f77ad7f72d04 77 /// @details If the result of a temperature measurement is higher
IanBenzMaxim 0:f77ad7f72d04 78 /// than TH or lower than TL, an alarm flag inside the device is
IanBenzMaxim 0:f77ad7f72d04 79 /// set. This flag is updated with every temperature measurement.
IanBenzMaxim 0:f77ad7f72d04 80 /// As long as the alarm flag is set, the DS1920 will respond to
IanBenzMaxim 0:f77ad7f72d04 81 /// the alarm search command.
IanBenzMaxim 0:f77ad7f72d04 82 /// @param[in] th 8-bit upper temperature threshold, MSB indicates sign.
IanBenzMaxim 0:f77ad7f72d04 83 /// @param[in] tl 8-bit lower temperature threshold, LSB indicates sign.
IanBenzMaxim 0:f77ad7f72d04 84 /// @param[in] res Resolution of the DS18B20.
IanBenzMaxim 0:f77ad7f72d04 85 MaximInterface_EXPORT error_code writeScratchpad(uint_least8_t th,
IanBenzMaxim 0:f77ad7f72d04 86 uint_least8_t tl,
IanBenzMaxim 0:f77ad7f72d04 87 uint_least8_t res);
IanBenzMaxim 0:f77ad7f72d04 88
IanBenzMaxim 0:f77ad7f72d04 89 /// Read Scratchpad Command
IanBenzMaxim 0:f77ad7f72d04 90 /// @param[out] scratchpad Contents of scratchpad.
IanBenzMaxim 0:f77ad7f72d04 91 MaximInterface_EXPORT error_code readScratchpad(Scratchpad & scratchpad);
IanBenzMaxim 0:f77ad7f72d04 92
IanBenzMaxim 0:f77ad7f72d04 93 /// Copy Scratchpad Command
IanBenzMaxim 0:f77ad7f72d04 94 /// @details This command copies from the scratchpad into the
IanBenzMaxim 0:f77ad7f72d04 95 /// EEPROM of the DS18B20, storing the temperature trigger bytes
IanBenzMaxim 0:f77ad7f72d04 96 /// and resolution in nonvolatile memory.
IanBenzMaxim 0:f77ad7f72d04 97 MaximInterface_EXPORT error_code copyScratchpad();
IanBenzMaxim 0:f77ad7f72d04 98
IanBenzMaxim 0:f77ad7f72d04 99 /// Read Power Supply command
IanBenzMaxim 0:f77ad7f72d04 100 /// @details This command determines if the DS18B20 is parasite
IanBenzMaxim 0:f77ad7f72d04 101 /// powered or has a local supply
IanBenzMaxim 0:f77ad7f72d04 102 /// @param[out] localPower
IanBenzMaxim 0:f77ad7f72d04 103 /// True if the device is powered by a local power supply, or false if the
IanBenzMaxim 0:f77ad7f72d04 104 /// device is parasitically powered.
IanBenzMaxim 0:f77ad7f72d04 105 MaximInterface_EXPORT error_code readPowerSupply(bool & localPower);
IanBenzMaxim 0:f77ad7f72d04 106
IanBenzMaxim 0:f77ad7f72d04 107 /// Convert Temperature Command
IanBenzMaxim 0:f77ad7f72d04 108 /// @details This command begins a temperature conversion.
IanBenzMaxim 0:f77ad7f72d04 109 MaximInterface_EXPORT error_code convertTemperature();
IanBenzMaxim 0:f77ad7f72d04 110
IanBenzMaxim 0:f77ad7f72d04 111 /// Recall Command
IanBenzMaxim 0:f77ad7f72d04 112 /// @details This command recalls the temperature trigger values
IanBenzMaxim 0:f77ad7f72d04 113 /// and resolution stored in EEPROM to the scratchpad.
IanBenzMaxim 0:f77ad7f72d04 114 MaximInterface_EXPORT error_code recallEeprom();
IanBenzMaxim 0:f77ad7f72d04 115
IanBenzMaxim 0:f77ad7f72d04 116 MaximInterface_EXPORT static const error_category & errorCategory();
IanBenzMaxim 0:f77ad7f72d04 117
IanBenzMaxim 0:f77ad7f72d04 118 private:
IanBenzMaxim 0:f77ad7f72d04 119 SelectRom selectRom;
IanBenzMaxim 0:f77ad7f72d04 120 OneWireMaster * master;
IanBenzMaxim 0:f77ad7f72d04 121 const Sleep * sleep;
IanBenzMaxim 0:f77ad7f72d04 122 uint_least8_t resolution;
IanBenzMaxim 0:f77ad7f72d04 123 };
IanBenzMaxim 0:f77ad7f72d04 124
IanBenzMaxim 0:f77ad7f72d04 125 /// Reads the current temperature as an integer value with decimal.
IanBenzMaxim 0:f77ad7f72d04 126 /// @param[out] temperature Temperature in degrees Celsius multiplied by 2.
IanBenzMaxim 0:f77ad7f72d04 127 MaximInterface_EXPORT error_code readTemperature(DS18B20 & ds18b20,
IanBenzMaxim 0:f77ad7f72d04 128 int & temperature);
IanBenzMaxim 0:f77ad7f72d04 129
IanBenzMaxim 0:f77ad7f72d04 130 inline error_code make_error_code(DS18B20::ErrorValue e) {
IanBenzMaxim 0:f77ad7f72d04 131 return error_code(e, DS18B20::errorCategory());
IanBenzMaxim 0:f77ad7f72d04 132 }
IanBenzMaxim 0:f77ad7f72d04 133
IanBenzMaxim 0:f77ad7f72d04 134 } // namespace MaximInterface
IanBenzMaxim 0:f77ad7f72d04 135
IanBenzMaxim 0:f77ad7f72d04 136 #endif