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/USBSerial/USBSerial.cpp
- 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. */ #include "stdint.h" #include "USBSerial.h" int USBSerial::_putc(int c) { if (!terminal_connected) return 0; send((uint8_t *)&c, 1); return 1; } int USBSerial::_getc() { uint8_t c = 0; while (buf.isEmpty()); buf.dequeue(&c); return c; } bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) { if(size > MAX_PACKET_SIZE_EPBULK) { return false; } if(!send(buf, size)) { return false; } return true; } bool USBSerial::EP2_OUT_callback() { uint8_t c[65]; uint32_t size = 0; //we read the packet received and put it on the circular buffer readEP(c, &size); for (uint32_t i = 0; i < size; i++) { buf.queue(c[i]); } //call a potential handler rx.call(); // We reactivate the endpoint to receive next characters readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); return true; } uint8_t USBSerial::available() { return buf.available(); }