CQ Publishing / Mbed 2 deprecated tg_201410s9_FG

Transistor Gijutsu, October 2014, Special Features Chapter 9， Software of the Function Generator トランジスタ技術2014年10月号　特集第9章のソフトウェア わがまま波形発生器のソフトウェア

Dependencies:   USBDevice mbed

Information

tg_201410s8_AD7714 トランジスタ技術 2014年 10月号 第9章のソフトウェア

Program for Section 9 in October. 2014 issue of the Transistor Gijutsu
(Japanese electronics magazine)

概要

このプログラムは、ソフトウエアDDSにより、任意の波形を出力（2ch）します。 特徴は次のとおりです。

  • PWM出力をDAコンバータとして利用します。
  • 周波数や波形、バースト条件などを個別に設定できる独立した出力を２チャネル持っています。
  • 周波数分解能0.023ｍHz
  • 周波数範囲0.023ｍHz～１０ｋHz
  • 各チャネルにそれぞれ、波形の先頭で出力されるトリガ出力があります。
  • 出力波形を関数で定義できます。
  • 休止波数、出力波数、を設定することでバースト波形が出力できます。

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。

  • DDS.cpp - DDSによる波形発生
  • 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.h@0:f1ecca559ec3, 2014-08-29 (annotated)

Committer:
Dance
Date:
Fri Aug 29 08:33:17 2014 +0000
Revision:
0:f1ecca559ec3
Transistor Gijutsu, October 2014, Special Features Chapter 9; ????????2014?10??????9????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Dance 0:f1ecca559ec3 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Dance 0:f1ecca559ec3 2 *
Dance 0:f1ecca559ec3 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Dance 0:f1ecca559ec3 4 * and associated documentation files (the "Software"), to deal in the Software without
Dance 0:f1ecca559ec3 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Dance 0:f1ecca559ec3 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Dance 0:f1ecca559ec3 7 * Software is furnished to do so, subject to the following conditions:
Dance 0:f1ecca559ec3 8 *
Dance 0:f1ecca559ec3 9 * The above copyright notice and this permission notice shall be included in all copies or
Dance 0:f1ecca559ec3 10 * substantial portions of the Software.
Dance 0:f1ecca559ec3 11 *
Dance 0:f1ecca559ec3 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Dance 0:f1ecca559ec3 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Dance 0:f1ecca559ec3 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Dance 0:f1ecca559ec3 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Dance 0:f1ecca559ec3 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Dance 0:f1ecca559ec3 17 */
Dance 0:f1ecca559ec3 18
Dance 0:f1ecca559ec3 19 #ifndef USBSERIAL_H
Dance 0:f1ecca559ec3 20 #define USBSERIAL_H
Dance 0:f1ecca559ec3 21
Dance 0:f1ecca559ec3 22 #include "USBCDC.h"
Dance 0:f1ecca559ec3 23 #include "Stream.h"
Dance 0:f1ecca559ec3 24 #include "CircBuffer.h"
Dance 0:f1ecca559ec3 25
Dance 0:f1ecca559ec3 26
Dance 0:f1ecca559ec3 27 /**
Dance 0:f1ecca559ec3 28 * USBSerial example
Dance 0:f1ecca559ec3 29 *
Dance 0:f1ecca559ec3 30 * @code
Dance 0:f1ecca559ec3 31 * #include "mbed.h"
Dance 0:f1ecca559ec3 32 * #include "USBSerial.h"
Dance 0:f1ecca559ec3 33 *
Dance 0:f1ecca559ec3 34 * //Virtual serial port over USB
Dance 0:f1ecca559ec3 35 * USBSerial serial;
Dance 0:f1ecca559ec3 36 *
Dance 0:f1ecca559ec3 37 * int main(void) {
Dance 0:f1ecca559ec3 38 *
Dance 0:f1ecca559ec3 39 * while(1)
Dance 0:f1ecca559ec3 40 * {
Dance 0:f1ecca559ec3 41 * serial.printf("I am a virtual serial port\n");
Dance 0:f1ecca559ec3 42 * wait(1);
Dance 0:f1ecca559ec3 43 * }
Dance 0:f1ecca559ec3 44 * }
Dance 0:f1ecca559ec3 45 * @endcode
Dance 0:f1ecca559ec3 46 */
Dance 0:f1ecca559ec3 47 class USBSerial: public USBCDC, public Stream {
Dance 0:f1ecca559ec3 48 public:
Dance 0:f1ecca559ec3 49
Dance 0:f1ecca559ec3 50 /**
Dance 0:f1ecca559ec3 51 * Constructor
Dance 0:f1ecca559ec3 52 *
Dance 0:f1ecca559ec3 53 * @param vendor_id Your vendor_id (default: 0x1f00)
Dance 0:f1ecca559ec3 54 * @param product_id Your product_id (default: 0x2012)
Dance 0:f1ecca559ec3 55 * @param product_release Your preoduct_release (default: 0x0001)
Dance 0:f1ecca559ec3 56 * @param connect_blocking define if the connection must be blocked if USB not plugged in
Dance 0:f1ecca559ec3 57 *
Dance 0:f1ecca559ec3 58 */
Dance 0:f1ecca559ec3 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:f1ecca559ec3 60 settingsChangedCallback = 0;
Dance 0:f1ecca559ec3 61 };
Dance 0:f1ecca559ec3 62
Dance 0:f1ecca559ec3 63
Dance 0:f1ecca559ec3 64 /**
Dance 0:f1ecca559ec3 65 * Send a character. You can use puts, printf.
Dance 0:f1ecca559ec3 66 *
Dance 0:f1ecca559ec3 67 * @param c character to be sent
Dance 0:f1ecca559ec3 68 * @returns true if there is no error, false otherwise
Dance 0:f1ecca559ec3 69 */
Dance 0:f1ecca559ec3 70 virtual int _putc(int c);
Dance 0:f1ecca559ec3 71
Dance 0:f1ecca559ec3 72 /**
Dance 0:f1ecca559ec3 73 * Read a character: blocking
Dance 0:f1ecca559ec3 74 *
Dance 0:f1ecca559ec3 75 * @returns character read
Dance 0:f1ecca559ec3 76 */
Dance 0:f1ecca559ec3 77 virtual int _getc();
Dance 0:f1ecca559ec3 78
Dance 0:f1ecca559ec3 79 /**
Dance 0:f1ecca559ec3 80 * Check the number of bytes available.
Dance 0:f1ecca559ec3 81 *
Dance 0:f1ecca559ec3 82 * @returns the number of bytes available
Dance 0:f1ecca559ec3 83 */
Dance 0:f1ecca559ec3 84 uint8_t available();
Dance 0:f1ecca559ec3 85
Dance 0:f1ecca559ec3 86 /** Determine if there is a character available to read
Dance 0:f1ecca559ec3 87 *
Dance 0:f1ecca559ec3 88 * @returns
Dance 0:f1ecca559ec3 89 * 1 if there is a character available to read,
Dance 0:f1ecca559ec3 90 * 0 otherwise
Dance 0:f1ecca559ec3 91 */
Dance 0:f1ecca559ec3 92 int readable() { return available() ? 1 : 0; }
Dance 0:f1ecca559ec3 93
Dance 0:f1ecca559ec3 94 /** Determine if there is space available to write a character
Dance 0:f1ecca559ec3 95 *
Dance 0:f1ecca559ec3 96 * @returns
Dance 0:f1ecca559ec3 97 * 1 if there is space to write a character,
Dance 0:f1ecca559ec3 98 * 0 otherwise
Dance 0:f1ecca559ec3 99 */
Dance 0:f1ecca559ec3 100 int writeable() { return 1; } // always return 1, for write operation is blocking
Dance 0:f1ecca559ec3 101
Dance 0:f1ecca559ec3 102 /**
Dance 0:f1ecca559ec3 103 * Write a block of data.
Dance 0:f1ecca559ec3 104 *
Dance 0:f1ecca559ec3 105 * For more efficiency, a block of size 64 (maximum size of a bulk endpoint) has to be written.
Dance 0:f1ecca559ec3 106 *
Dance 0:f1ecca559ec3 107 * @param buf pointer on data which will be written
Dance 0:f1ecca559ec3 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:f1ecca559ec3 109 *
Dance 0:f1ecca559ec3 110 * @returns true if successfull
Dance 0:f1ecca559ec3 111 */
Dance 0:f1ecca559ec3 112 bool writeBlock(uint8_t * buf, uint16_t size);
Dance 0:f1ecca559ec3 113
Dance 0:f1ecca559ec3 114 /**
Dance 0:f1ecca559ec3 115 * Attach a member function to call when a packet is received.
Dance 0:f1ecca559ec3 116 *
Dance 0:f1ecca559ec3 117 * @param tptr pointer to the object to call the member function on
Dance 0:f1ecca559ec3 118 * @param mptr pointer to the member function to be called
Dance 0:f1ecca559ec3 119 */
Dance 0:f1ecca559ec3 120 template<typename T>
Dance 0:f1ecca559ec3 121 void attach(T* tptr, void (T::*mptr)(void)) {
Dance 0:f1ecca559ec3 122 if((mptr != NULL) && (tptr != NULL)) {
Dance 0:f1ecca559ec3 123 rx.attach(tptr, mptr);
Dance 0:f1ecca559ec3 124 }
Dance 0:f1ecca559ec3 125 }
Dance 0:f1ecca559ec3 126
Dance 0:f1ecca559ec3 127 /**
Dance 0:f1ecca559ec3 128 * Attach a callback called when a packet is received
Dance 0:f1ecca559ec3 129 *
Dance 0:f1ecca559ec3 130 * @param fptr function pointer
Dance 0:f1ecca559ec3 131 */
Dance 0:f1ecca559ec3 132 void attach(void (*fptr)(void)) {
Dance 0:f1ecca559ec3 133 if(fptr != NULL) {
Dance 0:f1ecca559ec3 134 rx.attach(fptr);
Dance 0:f1ecca559ec3 135 }
Dance 0:f1ecca559ec3 136 }
Dance 0:f1ecca559ec3 137
Dance 0:f1ecca559ec3 138 /**
Dance 0:f1ecca559ec3 139 * Attach a callback to call when serial's settings are changed.
Dance 0:f1ecca559ec3 140 *
Dance 0:f1ecca559ec3 141 * @param fptr function pointer
Dance 0:f1ecca559ec3 142 */
Dance 0:f1ecca559ec3 143 void attach(void (*fptr)(int baud, int bits, int parity, int stop)) {
Dance 0:f1ecca559ec3 144 settingsChangedCallback = fptr;
Dance 0:f1ecca559ec3 145 }
Dance 0:f1ecca559ec3 146
Dance 0:f1ecca559ec3 147 protected:
Dance 0:f1ecca559ec3 148 virtual bool EP2_OUT_callback();
Dance 0:f1ecca559ec3 149 virtual void lineCodingChanged(int baud, int bits, int parity, int stop){
Dance 0:f1ecca559ec3 150 if (settingsChangedCallback) {
Dance 0:f1ecca559ec3 151 settingsChangedCallback(baud, bits, parity, stop);
Dance 0:f1ecca559ec3 152 }
Dance 0:f1ecca559ec3 153 }
Dance 0:f1ecca559ec3 154
Dance 0:f1ecca559ec3 155 private:
Dance 0:f1ecca559ec3 156 FunctionPointer rx;
Dance 0:f1ecca559ec3 157 CircBuffer<uint8_t> buf;
Dance 0:f1ecca559ec3 158 void (*settingsChangedCallback)(int baud, int bits, int parity, int stop);
Dance 0:f1ecca559ec3 159 };
Dance 0:f1ecca559ec3 160
Dance 0:f1ecca559ec3 161 #endif