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
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/USBMIDI/USBMIDI.cpp@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?
User | Revision | Line number | New 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 | #include "stdint.h" |
Dance | 0:f1ecca559ec3 | 20 | #include "USBMIDI.h" |
Dance | 0:f1ecca559ec3 | 21 | |
Dance | 0:f1ecca559ec3 | 22 | |
Dance | 0:f1ecca559ec3 | 23 | USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) { |
Dance | 0:f1ecca559ec3 | 24 | midi_evt = NULL; |
Dance | 0:f1ecca559ec3 | 25 | USBDevice::connect(); |
Dance | 0:f1ecca559ec3 | 26 | } |
Dance | 0:f1ecca559ec3 | 27 | |
Dance | 0:f1ecca559ec3 | 28 | void USBMIDI::write(MIDIMessage m) { |
Dance | 0:f1ecca559ec3 | 29 | USBDevice::write(EPBULK_IN, m.data, 4, MAX_PACKET_SIZE_EPBULK); |
Dance | 0:f1ecca559ec3 | 30 | } |
Dance | 0:f1ecca559ec3 | 31 | |
Dance | 0:f1ecca559ec3 | 32 | |
Dance | 0:f1ecca559ec3 | 33 | void USBMIDI::attach(void (*fptr)(MIDIMessage)) { |
Dance | 0:f1ecca559ec3 | 34 | midi_evt = fptr; |
Dance | 0:f1ecca559ec3 | 35 | } |
Dance | 0:f1ecca559ec3 | 36 | |
Dance | 0:f1ecca559ec3 | 37 | |
Dance | 0:f1ecca559ec3 | 38 | bool USBMIDI::EP2_OUT_callback() { |
Dance | 0:f1ecca559ec3 | 39 | uint8_t buf[64]; |
Dance | 0:f1ecca559ec3 | 40 | uint32_t len; |
Dance | 0:f1ecca559ec3 | 41 | readEP(EPBULK_OUT, buf, &len, 64); |
Dance | 0:f1ecca559ec3 | 42 | |
Dance | 0:f1ecca559ec3 | 43 | if (midi_evt != NULL) { |
Dance | 0:f1ecca559ec3 | 44 | for (uint32_t i=0; i<len; i+=4) { |
Dance | 0:f1ecca559ec3 | 45 | midi_evt(MIDIMessage(buf+i)); |
Dance | 0:f1ecca559ec3 | 46 | } |
Dance | 0:f1ecca559ec3 | 47 | } |
Dance | 0:f1ecca559ec3 | 48 | |
Dance | 0:f1ecca559ec3 | 49 | // We reactivate the endpoint to receive next characters |
Dance | 0:f1ecca559ec3 | 50 | readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); |
Dance | 0:f1ecca559ec3 | 51 | return true; |
Dance | 0:f1ecca559ec3 | 52 | } |
Dance | 0:f1ecca559ec3 | 53 | |
Dance | 0:f1ecca559ec3 | 54 | |
Dance | 0:f1ecca559ec3 | 55 | |
Dance | 0:f1ecca559ec3 | 56 | // Called in ISR context |
Dance | 0:f1ecca559ec3 | 57 | // Set configuration. Return false if the |
Dance | 0:f1ecca559ec3 | 58 | // configuration is not supported. |
Dance | 0:f1ecca559ec3 | 59 | bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) { |
Dance | 0:f1ecca559ec3 | 60 | if (configuration != DEFAULT_CONFIGURATION) { |
Dance | 0:f1ecca559ec3 | 61 | return false; |
Dance | 0:f1ecca559ec3 | 62 | } |
Dance | 0:f1ecca559ec3 | 63 | |
Dance | 0:f1ecca559ec3 | 64 | // Configure endpoints > 0 |
Dance | 0:f1ecca559ec3 | 65 | addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK); |
Dance | 0:f1ecca559ec3 | 66 | addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); |
Dance | 0:f1ecca559ec3 | 67 | |
Dance | 0:f1ecca559ec3 | 68 | // We activate the endpoint to be able to receive data |
Dance | 0:f1ecca559ec3 | 69 | readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); |
Dance | 0:f1ecca559ec3 | 70 | return true; |
Dance | 0:f1ecca559ec3 | 71 | } |
Dance | 0:f1ecca559ec3 | 72 | |
Dance | 0:f1ecca559ec3 | 73 | |
Dance | 0:f1ecca559ec3 | 74 | uint8_t * USBMIDI::stringIinterfaceDesc() { |
Dance | 0:f1ecca559ec3 | 75 | static uint8_t stringIinterfaceDescriptor[] = { |
Dance | 0:f1ecca559ec3 | 76 | 0x0c, //bLength |
Dance | 0:f1ecca559ec3 | 77 | STRING_DESCRIPTOR, //bDescriptorType 0x03 |
Dance | 0:f1ecca559ec3 | 78 | 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio |
Dance | 0:f1ecca559ec3 | 79 | }; |
Dance | 0:f1ecca559ec3 | 80 | return stringIinterfaceDescriptor; |
Dance | 0:f1ecca559ec3 | 81 | } |
Dance | 0:f1ecca559ec3 | 82 | |
Dance | 0:f1ecca559ec3 | 83 | uint8_t * USBMIDI::stringIproductDesc() { |
Dance | 0:f1ecca559ec3 | 84 | static uint8_t stringIproductDescriptor[] = { |
Dance | 0:f1ecca559ec3 | 85 | 0x16, //bLength |
Dance | 0:f1ecca559ec3 | 86 | STRING_DESCRIPTOR, //bDescriptorType 0x03 |
Dance | 0:f1ecca559ec3 | 87 | 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio |
Dance | 0:f1ecca559ec3 | 88 | }; |
Dance | 0:f1ecca559ec3 | 89 | return stringIproductDescriptor; |
Dance | 0:f1ecca559ec3 | 90 | } |
Dance | 0:f1ecca559ec3 | 91 | |
Dance | 0:f1ecca559ec3 | 92 | |
Dance | 0:f1ecca559ec3 | 93 | uint8_t * USBMIDI::configurationDesc() { |
Dance | 0:f1ecca559ec3 | 94 | static uint8_t configDescriptor[] = { |
Dance | 0:f1ecca559ec3 | 95 | // configuration descriptor |
Dance | 0:f1ecca559ec3 | 96 | 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50, |
Dance | 0:f1ecca559ec3 | 97 | |
Dance | 0:f1ecca559ec3 | 98 | // The Audio Interface Collection |
Dance | 0:f1ecca559ec3 | 99 | 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor |
Dance | 0:f1ecca559ec3 | 100 | 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor |
Dance | 0:f1ecca559ec3 | 101 | 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors |
Dance | 0:f1ecca559ec3 | 102 | 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor |
Dance | 0:f1ecca559ec3 | 103 | |
Dance | 0:f1ecca559ec3 | 104 | // MIDI IN JACKS |
Dance | 0:f1ecca559ec3 | 105 | 0x06, 0x24, 0x02, 0x01, 0x01, 0x00, |
Dance | 0:f1ecca559ec3 | 106 | 0x06, 0x24, 0x02, 0x02, 0x02, 0x00, |
Dance | 0:f1ecca559ec3 | 107 | |
Dance | 0:f1ecca559ec3 | 108 | // MIDI OUT JACKS |
Dance | 0:f1ecca559ec3 | 109 | 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00, |
Dance | 0:f1ecca559ec3 | 110 | 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00, |
Dance | 0:f1ecca559ec3 | 111 | |
Dance | 0:f1ecca559ec3 | 112 | // OUT endpoint descriptor |
Dance | 0:f1ecca559ec3 | 113 | 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, |
Dance | 0:f1ecca559ec3 | 114 | 0x05, 0x25, 0x01, 0x01, 0x01, |
Dance | 0:f1ecca559ec3 | 115 | |
Dance | 0:f1ecca559ec3 | 116 | // IN endpoint descriptor |
Dance | 0:f1ecca559ec3 | 117 | 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, |
Dance | 0:f1ecca559ec3 | 118 | 0x05, 0x25, 0x01, 0x01, 0x03, |
Dance | 0:f1ecca559ec3 | 119 | }; |
Dance | 0:f1ecca559ec3 | 120 | return configDescriptor; |
Dance | 0:f1ecca559ec3 | 121 | } |