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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」
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。
USBDevice/USBDevice/USBDescriptor.h
- Committer:
- Dance
- Date:
- 2014-08-29
- Revision:
- 0:de885a6da962
File content as of revision 0:de885a6da962:
/* Copyright (c) 2010-2011 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* Standard descriptor types */ #define DEVICE_DESCRIPTOR (1) #define CONFIGURATION_DESCRIPTOR (2) #define STRING_DESCRIPTOR (3) #define INTERFACE_DESCRIPTOR (4) #define ENDPOINT_DESCRIPTOR (5) #define QUALIFIER_DESCRIPTOR (6) /* Standard descriptor lengths */ #define DEVICE_DESCRIPTOR_LENGTH (0x12) #define CONFIGURATION_DESCRIPTOR_LENGTH (0x09) #define INTERFACE_DESCRIPTOR_LENGTH (0x09) #define ENDPOINT_DESCRIPTOR_LENGTH (0x07) /*string offset*/ #define STRING_OFFSET_LANGID (0) #define STRING_OFFSET_IMANUFACTURER (1) #define STRING_OFFSET_IPRODUCT (2) #define STRING_OFFSET_ISERIAL (3) #define STRING_OFFSET_ICONFIGURATION (4) #define STRING_OFFSET_IINTERFACE (5) /* USB Specification Release Number */ #define USB_VERSION_2_0 (0x0200) /* Least/Most significant byte of short integer */ #define LSB(n) ((n)&0xff) #define MSB(n) (((n)&0xff00)>>8) /* Convert physical endpoint number to descriptor endpoint number */ #define PHY_TO_DESC(endpoint) (((endpoint)>>1) | (((endpoint) & 1) ? 0x80:0)) /* bmAttributes in configuration descriptor */ /* C_RESERVED must always be set */ #define C_RESERVED (1U<<7) #define C_SELF_POWERED (1U<<6) #define C_REMOTE_WAKEUP (1U<<5) /* bMaxPower in configuration descriptor */ #define C_POWER(mA) ((mA)/2) /* bmAttributes in endpoint descriptor */ #define E_CONTROL (0x00) #define E_ISOCHRONOUS (0x01) #define E_BULK (0x02) #define E_INTERRUPT (0x03) /* For isochronous endpoints only: */ #define E_NO_SYNCHRONIZATION (0x00) #define E_ASYNCHRONOUS (0x04) #define E_ADAPTIVE (0x08) #define E_SYNCHRONOUS (0x0C) #define E_DATA (0x00) #define E_FEEDBACK (0x10) #define E_IMPLICIT_FEEDBACK (0x20)