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 /* Standard descriptor types */
Dance 0:de885a6da962 20 #define DEVICE_DESCRIPTOR (1)
Dance 0:de885a6da962 21 #define CONFIGURATION_DESCRIPTOR (2)
Dance 0:de885a6da962 22 #define STRING_DESCRIPTOR (3)
Dance 0:de885a6da962 23 #define INTERFACE_DESCRIPTOR (4)
Dance 0:de885a6da962 24 #define ENDPOINT_DESCRIPTOR (5)
Dance 0:de885a6da962 25 #define QUALIFIER_DESCRIPTOR (6)
Dance 0:de885a6da962 26
Dance 0:de885a6da962 27 /* Standard descriptor lengths */
Dance 0:de885a6da962 28 #define DEVICE_DESCRIPTOR_LENGTH (0x12)
Dance 0:de885a6da962 29 #define CONFIGURATION_DESCRIPTOR_LENGTH (0x09)
Dance 0:de885a6da962 30 #define INTERFACE_DESCRIPTOR_LENGTH (0x09)
Dance 0:de885a6da962 31 #define ENDPOINT_DESCRIPTOR_LENGTH (0x07)
Dance 0:de885a6da962 32
Dance 0:de885a6da962 33
Dance 0:de885a6da962 34 /*string offset*/
Dance 0:de885a6da962 35 #define STRING_OFFSET_LANGID (0)
Dance 0:de885a6da962 36 #define STRING_OFFSET_IMANUFACTURER (1)
Dance 0:de885a6da962 37 #define STRING_OFFSET_IPRODUCT (2)
Dance 0:de885a6da962 38 #define STRING_OFFSET_ISERIAL (3)
Dance 0:de885a6da962 39 #define STRING_OFFSET_ICONFIGURATION (4)
Dance 0:de885a6da962 40 #define STRING_OFFSET_IINTERFACE (5)
Dance 0:de885a6da962 41
Dance 0:de885a6da962 42 /* USB Specification Release Number */
Dance 0:de885a6da962 43 #define USB_VERSION_2_0 (0x0200)
Dance 0:de885a6da962 44
Dance 0:de885a6da962 45 /* Least/Most significant byte of short integer */
Dance 0:de885a6da962 46 #define LSB(n) ((n)&0xff)
Dance 0:de885a6da962 47 #define MSB(n) (((n)&0xff00)>>8)
Dance 0:de885a6da962 48
Dance 0:de885a6da962 49 /* Convert physical endpoint number to descriptor endpoint number */
Dance 0:de885a6da962 50 #define PHY_TO_DESC(endpoint) (((endpoint)>>1) | (((endpoint) & 1) ? 0x80:0))
Dance 0:de885a6da962 51
Dance 0:de885a6da962 52 /* bmAttributes in configuration descriptor */
Dance 0:de885a6da962 53 /* C_RESERVED must always be set */
Dance 0:de885a6da962 54 #define C_RESERVED (1U<<7)
Dance 0:de885a6da962 55 #define C_SELF_POWERED (1U<<6)
Dance 0:de885a6da962 56 #define C_REMOTE_WAKEUP (1U<<5)
Dance 0:de885a6da962 57
Dance 0:de885a6da962 58 /* bMaxPower in configuration descriptor */
Dance 0:de885a6da962 59 #define C_POWER(mA) ((mA)/2)
Dance 0:de885a6da962 60
Dance 0:de885a6da962 61 /* bmAttributes in endpoint descriptor */
Dance 0:de885a6da962 62 #define E_CONTROL (0x00)
Dance 0:de885a6da962 63 #define E_ISOCHRONOUS (0x01)
Dance 0:de885a6da962 64 #define E_BULK (0x02)
Dance 0:de885a6da962 65 #define E_INTERRUPT (0x03)
Dance 0:de885a6da962 66
Dance 0:de885a6da962 67 /* For isochronous endpoints only: */
Dance 0:de885a6da962 68 #define E_NO_SYNCHRONIZATION (0x00)
Dance 0:de885a6da962 69 #define E_ASYNCHRONOUS (0x04)
Dance 0:de885a6da962 70 #define E_ADAPTIVE (0x08)
Dance 0:de885a6da962 71 #define E_SYNCHRONOUS (0x0C)
Dance 0:de885a6da962 72 #define E_DATA (0x00)
Dance 0:de885a6da962 73 #define E_FEEDBACK (0x10)
Dance 0:de885a6da962 74 #define E_IMPLICIT_FEEDBACK (0x20)