不韋 呂 / Mbed 2 deprecated F746_RealtimeSpectrumAnalyzer_MEMS_Mic

Version using MEMS microphone and CODEC for the program "F746_RealtimeSpectrumAnalyzer". "F746_RealtimeSpectrumAnalyzer" の入力を MEMS のマイクと CODEC に変更．このプログラムは Tomona Nanase さんが作成し DISCO-F746NG_Oscilloscope の名前で登録しているプログラムで， CODEC を使って入力する部分を参考にして作成．このプログラムの説明は，CQ出版社のインターフェース誌，2016年4月号に掲載．

Dependencies:   BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed

main.cpp@0:0e5131366580, 2016-01-06 (annotated)

Committer:
MikamiUitOpen
Date:
Wed Jan 06 12:46:15 2016 +0000
Revision:
0:0e5131366580
Child:
1:ac0a67a0deec
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:0e5131366580 1 //------------------------------------------------
MikamiUitOpen 0:0e5131366580 2 // Realtime spectrum analyzer
MikamiUitOpen 0:0e5131366580 3 // Input: MEMS microphone or CN11
MikamiUitOpen 0:0e5131366580 4 //
MikamiUitOpen 0:0e5131366580 5 // 2016/01/06, Copyright (c) 2016 MIKAMI, Naoki
MikamiUitOpen 0:0e5131366580 6 //------------------------------------------------
MikamiUitOpen 0:0e5131366580 7
MikamiUitOpen 0:0e5131366580 8 #include "main.h"
MikamiUitOpen 0:0e5131366580 9
MikamiUitOpen 0:0e5131366580 10 using namespace Mikami;
MikamiUitOpen 0:0e5131366580 11
MikamiUitOpen 0:0e5131366580 12 int16_t audio_in_buffer[BufferSize];
MikamiUitOpen 0:0e5131366580 13 __IO bool audio_in_buffer_captured = false;
MikamiUitOpen 0:0e5131366580 14 __IO int32_t audio_in_buffer_offset = 0;
MikamiUitOpen 0:0e5131366580 15 __IO int32_t audio_in_buffer_length = 0;
MikamiUitOpen 0:0e5131366580 16
MikamiUitOpen 0:0e5131366580 17 int main()
MikamiUitOpen 0:0e5131366580 18 {
MikamiUitOpen 0:0e5131366580 19 const int FS = 8000; // Sampling frequency: 8 kHz
MikamiUitOpen 0:0e5131366580 20 const int N_DATA = N_DATA_; // Number of data to be analyzed
MikamiUitOpen 0:0e5131366580 21 const int N_FFT = 512; // Number of date for FFT
MikamiUitOpen 0:0e5131366580 22
MikamiUitOpen 0:0e5131366580 23 const int X_WAV = 44; // Origin for x axis of waveform
MikamiUitOpen 0:0e5131366580 24 const int Y_WAV = 36; // Origin for y axis of waveform
MikamiUitOpen 0:0e5131366580 25 const int X0 = 40; // Origin for x axis of spectrum
MikamiUitOpen 0:0e5131366580 26 const int Y0 = 234; // Origin for y axis of spectrum
MikamiUitOpen 0:0e5131366580 27 const float DB1 = 2.4f; // Pixels for 1 dB
MikamiUitOpen 0:0e5131366580 28 const int BIN = 1; // Pixels per bin
MikamiUitOpen 0:0e5131366580 29 const int W_DB = 60; // Range in dB to be displayed
MikamiUitOpen 0:0e5131366580 30 const int X0_BTN = 340; // Holizontal position for left of buttons
MikamiUitOpen 0:0e5131366580 31
MikamiUitOpen 0:0e5131366580 32 const uint32_t BACK_COLOR = 0xFF006A6C; // Teal green
MikamiUitOpen 0:0e5131366580 33 const uint32_t INACTIVE_COLOR = BACK_COLOR & 0xD0FFFFFF;
MikamiUitOpen 0:0e5131366580 34 const uint32_t TOUCHED_COLOR = 0xFF7F7FFF;
MikamiUitOpen 0:0e5131366580 35 const uint32_t ORIGINAL_COLOR = 0xFF0068B7;
MikamiUitOpen 0:0e5131366580 36 const uint32_t INACTIVE_TEXT_COLOR = LCD_COLOR_GRAY;
MikamiUitOpen 0:0e5131366580 37 const uint32_t AXIS_COLOR = 0xFFCCFFFF;
MikamiUitOpen 0:0e5131366580 38 const uint32_t LINE_COLOR = LCD_COLOR_CYAN;
MikamiUitOpen 0:0e5131366580 39
MikamiUitOpen 0:0e5131366580 40 LCD_DISCO_F746NG lcd; // Object for LCD display
MikamiUitOpen 0:0e5131366580 41 TS_DISCO_F746NG ts; // Object for touch pannel
MikamiUitOpen 0:0e5131366580 42
MikamiUitOpen 0:0e5131366580 43 lcd.Clear(BACK_COLOR);
MikamiUitOpen 0:0e5131366580 44
MikamiUitOpen 0:0e5131366580 45 // Setting of button group
MikamiUitOpen 0:0e5131366580 46 const string RUN_STOP[2] = {"RUN", "STOP"};
MikamiUitOpen 0:0e5131366580 47 ButtonGroup runStop(lcd, ts, X0_BTN, 10, 60, 40,
MikamiUitOpen 0:0e5131366580 48 ORIGINAL_COLOR, BACK_COLOR,
MikamiUitOpen 0:0e5131366580 49 2, RUN_STOP, 5, 0, 2);
MikamiUitOpen 0:0e5131366580 50 runStop.Draw(1, INACTIVE_COLOR, INACTIVE_TEXT_COLOR);
MikamiUitOpen 0:0e5131366580 51
MikamiUitOpen 0:0e5131366580 52 const string MIC_LINE[2] = {"MIC", "LINE"};
MikamiUitOpen 0:0e5131366580 53 ButtonGroup micLine(lcd, ts, X0_BTN, 65, 60, 40,
MikamiUitOpen 0:0e5131366580 54 ORIGINAL_COLOR, BACK_COLOR,
MikamiUitOpen 0:0e5131366580 55 2, MIC_LINE, 5, 0, 2);
MikamiUitOpen 0:0e5131366580 56 micLine.DrawAll(INACTIVE_COLOR, INACTIVE_TEXT_COLOR);
MikamiUitOpen 0:0e5131366580 57
MikamiUitOpen 0:0e5131366580 58 const string METHOD[3] = {"FFT", "Linear Pred.", "Cepstrum"};
MikamiUitOpen 0:0e5131366580 59 ButtonGroup method(lcd, ts, X0_BTN, 120, 125, 40,
MikamiUitOpen 0:0e5131366580 60 ORIGINAL_COLOR, BACK_COLOR,
MikamiUitOpen 0:0e5131366580 61 3, METHOD, 0, 5, 1);
MikamiUitOpen 0:0e5131366580 62 method.DrawAll(INACTIVE_COLOR, INACTIVE_TEXT_COLOR);
MikamiUitOpen 0:0e5131366580 63 // End of button group setting
MikamiUitOpen 0:0e5131366580 64
MikamiUitOpen 0:0e5131366580 65 WaveformDisplay waveDisp(lcd, X_WAV, Y_WAV, N_DATA, 10,
MikamiUitOpen 0:0e5131366580 66 AXIS_COLOR, LINE_COLOR, BACK_COLOR);
MikamiUitOpen 0:0e5131366580 67
MikamiUitOpen 0:0e5131366580 68 SpectrumDisplay disp(lcd, N_FFT, X0, Y0, DB1, BIN, W_DB, FS,
MikamiUitOpen 0:0e5131366580 69 AXIS_COLOR, LINE_COLOR, BACK_COLOR);
MikamiUitOpen 0:0e5131366580 70 // Linear prediction: order = 12
MikamiUitOpen 0:0e5131366580 71 // Cepstral smoothing: highest quefrency = 40
MikamiUitOpen 0:0e5131366580 72 Selector analyzer(disp, N_DATA, N_FFT, 12, 40);
MikamiUitOpen 0:0e5131366580 73
MikamiUitOpen 0:0e5131366580 74 // Initialize the infinite loop procedure
MikamiUitOpen 0:0e5131366580 75 int select = -1;
MikamiUitOpen 0:0e5131366580 76 uint16_t inputDevice;
MikamiUitOpen 0:0e5131366580 77 int mic = 0;
MikamiUitOpen 0:0e5131366580 78 int stop = 0;
MikamiUitOpen 0:0e5131366580 79 int16_t sn[N_DATA];
MikamiUitOpen 0:0e5131366580 80
MikamiUitOpen 0:0e5131366580 81 // Wait for "RUN" button touched
MikamiUitOpen 0:0e5131366580 82 while (!runStop.Touched(0, TOUCHED_COLOR)) {}
MikamiUitOpen 0:0e5131366580 83
MikamiUitOpen 0:0e5131366580 84 // Start of spectrum analyzing
MikamiUitOpen 0:0e5131366580 85 method.DrawAll(ORIGINAL_COLOR);
MikamiUitOpen 0:0e5131366580 86
MikamiUitOpen 0:0e5131366580 87 while (true)
MikamiUitOpen 0:0e5131366580 88 {
MikamiUitOpen 0:0e5131366580 89 if (runStop.Touched(0, TOUCHED_COLOR))
MikamiUitOpen 0:0e5131366580 90 {
MikamiUitOpen 0:0e5131366580 91 inputDevice = (mic == 0) ? INPUT_DEVICE_DIGITAL_MICROPHONE_2
MikamiUitOpen 0:0e5131366580 92 : INPUT_DEVICE_INPUT_LINE_1;
MikamiUitOpen 0:0e5131366580 93 InitRunAudioIn(inputDevice, I2S_AUDIOFREQ_16K);
MikamiUitOpen 0:0e5131366580 94 micLine.Draw(mic, TOUCHED_COLOR);
MikamiUitOpen 0:0e5131366580 95 micLine.Redraw(1-mic);
MikamiUitOpen 0:0e5131366580 96 }
MikamiUitOpen 0:0e5131366580 97
MikamiUitOpen 0:0e5131366580 98 runStop.GetTouchedNumber(stop, TOUCHED_COLOR);
MikamiUitOpen 0:0e5131366580 99 if (stop == 0)
MikamiUitOpen 0:0e5131366580 100 {
MikamiUitOpen 0:0e5131366580 101 if (micLine.GetTouchedNumber(mic, TOUCHED_COLOR))
MikamiUitOpen 0:0e5131366580 102 {
MikamiUitOpen 0:0e5131366580 103 StopAudioIn(); // Stop sampling
MikamiUitOpen 0:0e5131366580 104 inputDevice = (mic == 0) ? INPUT_DEVICE_DIGITAL_MICROPHONE_2
MikamiUitOpen 0:0e5131366580 105 : INPUT_DEVICE_INPUT_LINE_1;
MikamiUitOpen 0:0e5131366580 106 InitRunAudioIn(inputDevice, I2S_AUDIOFREQ_16K);
MikamiUitOpen 0:0e5131366580 107 }
MikamiUitOpen 0:0e5131366580 108
MikamiUitOpen 0:0e5131366580 109 if (audio_in_buffer_captured)
MikamiUitOpen 0:0e5131366580 110 {
MikamiUitOpen 0:0e5131366580 111 // Waveform display
MikamiUitOpen 0:0e5131366580 112 int32_t index = audio_in_buffer_offset; // right mic. or left line
MikamiUitOpen 0:0e5131366580 113 // int32_t index = audio_in_buffer_offset + 1; // left mic. or right line
MikamiUitOpen 0:0e5131366580 114 Decimate(N_DATA, index, audio_in_buffer, sn);
MikamiUitOpen 0:0e5131366580 115 waveDisp.Execute(sn);
MikamiUitOpen 0:0e5131366580 116 // Spectrum analysis and display
MikamiUitOpen 0:0e5131366580 117 analyzer.Execute(sn, select);
MikamiUitOpen 0:0e5131366580 118 audio_in_buffer_captured = false;
MikamiUitOpen 0:0e5131366580 119 }
MikamiUitOpen 0:0e5131366580 120 else
MikamiUitOpen 0:0e5131366580 121 if (method.GetTouchedNumber(select, TOUCHED_COLOR))
MikamiUitOpen 0:0e5131366580 122 analyzer.Execute(sn, select);
MikamiUitOpen 0:0e5131366580 123 }
MikamiUitOpen 0:0e5131366580 124 else
MikamiUitOpen 0:0e5131366580 125 {
MikamiUitOpen 0:0e5131366580 126 if (runStop.Touched(1))
MikamiUitOpen 0:0e5131366580 127 {
MikamiUitOpen 0:0e5131366580 128 StopAudioIn(); // Stop sampling
MikamiUitOpen 0:0e5131366580 129 micLine.DrawAll(INACTIVE_COLOR, INACTIVE_TEXT_COLOR);
MikamiUitOpen 0:0e5131366580 130 }
MikamiUitOpen 0:0e5131366580 131 if (method.GetTouchedNumber(select, TOUCHED_COLOR))
MikamiUitOpen 0:0e5131366580 132 analyzer.Execute(sn, select);
MikamiUitOpen 0:0e5131366580 133 }
MikamiUitOpen 0:0e5131366580 134 }
MikamiUitOpen 0:0e5131366580 135 }
MikamiUitOpen 0:0e5131366580 136