Transistor Gijutsu, October 2014, Special Features Chapter 8,Software of the thermistor thermometer of 0.001 ° resolution, トランジスタ技術2014年10月号 特集第8章のソフトウェア 0.001℃分解能で気配もキャッチ「超敏感肌温度計」

Dependencies:   USBDevice mbed

Information

tg_201410s8_AD7714 トランジスタ技術 2014年 10月号 第8章のソフトウェア

Program for Section 8 in October. 2014 issue of the Transistor Gijutsu
(Japanese electronics magazine)

概要

このプログラムは、サーミスタの抵抗値変化をAD7714(24bitADC)で測定し、抵抗値を温度値に変換することで、0.001℃程度の分解能で温度変化を測定します。

ファイル

このソフトウエアは、次のファイルから構成されています。

  • AD7714.cpp - AD7714の内部レジスタを設定
  • Thermistor.cpp - サーミスタの抵抗値から温度値に変換
  • ExpAvr.cpp - 指数平均によるソフトウエアLPF
  • main.cpp - main()関数

詳細については、10月号の記事および上記ファイル中のコメントを参照してください。

Committer:
Dance
Date:
Fri Aug 29 08:38:36 2014 +0000
Revision:
0:de885a6da962
Transistor Gijutsu, October 2014, Special Features Chapter 8; ????????2014?10??????8????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Dance 0:de885a6da962 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Dance 0:de885a6da962 2 *
Dance 0:de885a6da962 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Dance 0:de885a6da962 4 * and associated documentation files (the "Software"), to deal in the Software without
Dance 0:de885a6da962 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Dance 0:de885a6da962 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Dance 0:de885a6da962 7 * Software is furnished to do so, subject to the following conditions:
Dance 0:de885a6da962 8 *
Dance 0:de885a6da962 9 * The above copyright notice and this permission notice shall be included in all copies or
Dance 0:de885a6da962 10 * substantial portions of the Software.
Dance 0:de885a6da962 11 *
Dance 0:de885a6da962 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Dance 0:de885a6da962 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Dance 0:de885a6da962 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Dance 0:de885a6da962 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Dance 0:de885a6da962 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Dance 0:de885a6da962 17 */
Dance 0:de885a6da962 18
Dance 0:de885a6da962 19 #ifndef USBSERIAL_H
Dance 0:de885a6da962 20 #define USBSERIAL_H
Dance 0:de885a6da962 21
Dance 0:de885a6da962 22 #include "USBCDC.h"
Dance 0:de885a6da962 23 #include "Stream.h"
Dance 0:de885a6da962 24 #include "CircBuffer.h"
Dance 0:de885a6da962 25
Dance 0:de885a6da962 26
Dance 0:de885a6da962 27 /**
Dance 0:de885a6da962 28 * USBSerial example
Dance 0:de885a6da962 29 *
Dance 0:de885a6da962 30 * @code
Dance 0:de885a6da962 31 * #include "mbed.h"
Dance 0:de885a6da962 32 * #include "USBSerial.h"
Dance 0:de885a6da962 33 *
Dance 0:de885a6da962 34 * //Virtual serial port over USB
Dance 0:de885a6da962 35 * USBSerial serial;
Dance 0:de885a6da962 36 *
Dance 0:de885a6da962 37 * int main(void) {
Dance 0:de885a6da962 38 *
Dance 0:de885a6da962 39 * while(1)
Dance 0:de885a6da962 40 * {
Dance 0:de885a6da962 41 * serial.printf("I am a virtual serial port\n");
Dance 0:de885a6da962 42 * wait(1);
Dance 0:de885a6da962 43 * }
Dance 0:de885a6da962 44 * }
Dance 0:de885a6da962 45 * @endcode
Dance 0:de885a6da962 46 */
Dance 0:de885a6da962 47 class USBSerial: public USBCDC, public Stream {
Dance 0:de885a6da962 48 public:
Dance 0:de885a6da962 49
Dance 0:de885a6da962 50 /**
Dance 0:de885a6da962 51 * Constructor
Dance 0:de885a6da962 52 *
Dance 0:de885a6da962 53 * @param vendor_id Your vendor_id (default: 0x1f00)
Dance 0:de885a6da962 54 * @param product_id Your product_id (default: 0x2012)
Dance 0:de885a6da962 55 * @param product_release Your preoduct_release (default: 0x0001)
Dance 0:de885a6da962 56 * @param connect_blocking define if the connection must be blocked if USB not plugged in
Dance 0:de885a6da962 57 *
Dance 0:de885a6da962 58 */
Dance 0:de885a6da962 59 USBSerial(uint16_t vendor_id = 0x1f00, uint16_t product_id = 0x2012, uint16_t product_release = 0x0001, bool connect_blocking = true): USBCDC(vendor_id, product_id, product_release, connect_blocking), buf(128){
Dance 0:de885a6da962 60 settingsChangedCallback = 0;
Dance 0:de885a6da962 61 };
Dance 0:de885a6da962 62
Dance 0:de885a6da962 63
Dance 0:de885a6da962 64 /**
Dance 0:de885a6da962 65 * Send a character. You can use puts, printf.
Dance 0:de885a6da962 66 *
Dance 0:de885a6da962 67 * @param c character to be sent
Dance 0:de885a6da962 68 * @returns true if there is no error, false otherwise
Dance 0:de885a6da962 69 */
Dance 0:de885a6da962 70 virtual int _putc(int c);
Dance 0:de885a6da962 71
Dance 0:de885a6da962 72 /**
Dance 0:de885a6da962 73 * Read a character: blocking
Dance 0:de885a6da962 74 *
Dance 0:de885a6da962 75 * @returns character read
Dance 0:de885a6da962 76 */
Dance 0:de885a6da962 77 virtual int _getc();
Dance 0:de885a6da962 78
Dance 0:de885a6da962 79 /**
Dance 0:de885a6da962 80 * Check the number of bytes available.
Dance 0:de885a6da962 81 *
Dance 0:de885a6da962 82 * @returns the number of bytes available
Dance 0:de885a6da962 83 */
Dance 0:de885a6da962 84 uint8_t available();
Dance 0:de885a6da962 85
Dance 0:de885a6da962 86 /** Determine if there is a character available to read
Dance 0:de885a6da962 87 *
Dance 0:de885a6da962 88 * @returns
Dance 0:de885a6da962 89 * 1 if there is a character available to read,
Dance 0:de885a6da962 90 * 0 otherwise
Dance 0:de885a6da962 91 */
Dance 0:de885a6da962 92 int readable() { return available() ? 1 : 0; }
Dance 0:de885a6da962 93
Dance 0:de885a6da962 94 /** Determine if there is space available to write a character
Dance 0:de885a6da962 95 *
Dance 0:de885a6da962 96 * @returns
Dance 0:de885a6da962 97 * 1 if there is space to write a character,
Dance 0:de885a6da962 98 * 0 otherwise
Dance 0:de885a6da962 99 */
Dance 0:de885a6da962 100 int writeable() { return 1; } // always return 1, for write operation is blocking
Dance 0:de885a6da962 101
Dance 0:de885a6da962 102 /**
Dance 0:de885a6da962 103 * Write a block of data.
Dance 0:de885a6da962 104 *
Dance 0:de885a6da962 105 * For more efficiency, a block of size 64 (maximum size of a bulk endpoint) has to be written.
Dance 0:de885a6da962 106 *
Dance 0:de885a6da962 107 * @param buf pointer on data which will be written
Dance 0:de885a6da962 108 * @param size size of the buffer. The maximum size of a block is limited by the size of the endpoint (64 bytes)
Dance 0:de885a6da962 109 *
Dance 0:de885a6da962 110 * @returns true if successfull
Dance 0:de885a6da962 111 */
Dance 0:de885a6da962 112 bool writeBlock(uint8_t * buf, uint16_t size);
Dance 0:de885a6da962 113
Dance 0:de885a6da962 114 /**
Dance 0:de885a6da962 115 * Attach a member function to call when a packet is received.
Dance 0:de885a6da962 116 *
Dance 0:de885a6da962 117 * @param tptr pointer to the object to call the member function on
Dance 0:de885a6da962 118 * @param mptr pointer to the member function to be called
Dance 0:de885a6da962 119 */
Dance 0:de885a6da962 120 template<typename T>
Dance 0:de885a6da962 121 void attach(T* tptr, void (T::*mptr)(void)) {
Dance 0:de885a6da962 122 if((mptr != NULL) && (tptr != NULL)) {
Dance 0:de885a6da962 123 rx.attach(tptr, mptr);
Dance 0:de885a6da962 124 }
Dance 0:de885a6da962 125 }
Dance 0:de885a6da962 126
Dance 0:de885a6da962 127 /**
Dance 0:de885a6da962 128 * Attach a callback called when a packet is received
Dance 0:de885a6da962 129 *
Dance 0:de885a6da962 130 * @param fptr function pointer
Dance 0:de885a6da962 131 */
Dance 0:de885a6da962 132 void attach(void (*fptr)(void)) {
Dance 0:de885a6da962 133 if(fptr != NULL) {
Dance 0:de885a6da962 134 rx.attach(fptr);
Dance 0:de885a6da962 135 }
Dance 0:de885a6da962 136 }
Dance 0:de885a6da962 137
Dance 0:de885a6da962 138 /**
Dance 0:de885a6da962 139 * Attach a callback to call when serial's settings are changed.
Dance 0:de885a6da962 140 *
Dance 0:de885a6da962 141 * @param fptr function pointer
Dance 0:de885a6da962 142 */
Dance 0:de885a6da962 143 void attach(void (*fptr)(int baud, int bits, int parity, int stop)) {
Dance 0:de885a6da962 144 settingsChangedCallback = fptr;
Dance 0:de885a6da962 145 }
Dance 0:de885a6da962 146
Dance 0:de885a6da962 147 protected:
Dance 0:de885a6da962 148 virtual bool EP2_OUT_callback();
Dance 0:de885a6da962 149 virtual void lineCodingChanged(int baud, int bits, int parity, int stop){
Dance 0:de885a6da962 150 if (settingsChangedCallback) {
Dance 0:de885a6da962 151 settingsChangedCallback(baud, bits, parity, stop);
Dance 0:de885a6da962 152 }
Dance 0:de885a6da962 153 }
Dance 0:de885a6da962 154
Dance 0:de885a6da962 155 private:
Dance 0:de885a6da962 156 FunctionPointer rx;
Dance 0:de885a6da962 157 CircBuffer<uint8_t> buf;
Dance 0:de885a6da962 158 void (*settingsChangedCallback)(int baud, int bits, int parity, int stop);
Dance 0:de885a6da962 159 };
Dance 0:de885a6da962 160
Dance 0:de885a6da962 161 #endif