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。
Diff: USBDevice/USBSerial/USBSerial.cpp
- Revision:
- 0:de885a6da962
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice/USBSerial/USBSerial.cpp Fri Aug 29 08:38:36 2014 +0000 @@ -0,0 +1,69 @@ +/* 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(); +}