不韋 呂
Output the audio signal (*.bin) with filtering by IIR filter in the SD card using onboard CODEC. For *.wav file, F746_SD_WavPlayer and F746_SD_GraphicEqualiser are published on mbed. SD カードのオーディオ信号 (*.bin) を遮断周波数可変の IIR フィルタを通して，ボードに搭載されているCODEC で出力する．*.wav 形式のファイル用には，F746_SD_WavPlayer と F746_SD_GraphicEqualiser を mbed で公開している．
Dependencies: BSP_DISCO_F746NG_patch_fixed F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed
Diff: MyClasses_Functions/FrquencyResponseDrawer.cpp
- Revision:
- 0:6748e3332e85
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyClasses_Functions/FrquencyResponseDrawer.cpp Fri Apr 08 13:11:53 2016 +0000
@@ -0,0 +1,89 @@
+//-----------------------------------------------------------
+// FrqRespDrawer class (Abstract base class)
+//
+// 2016/03/31, Copyright (c) 2016 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#include "FrquencyResponseDrawer.hpp"
+#include "NumericLabel.hpp"
+
+namespace Mikami
+{
+ // 目盛線の描画
+ void FrqRespDrawer::DrawAxis()
+ {
+ uint16_t height = DB1_*(P_.MAX_DB - P_.MIN_DB);
+ int logMin = (int)floorf(log10f(P_.MIN));
+ int loop = (int)floorf(log10f(P_.MAX)) - logMin;
+
+ lcd_->SetTextColor(P_.AXIS_COLOR);
+ uint16_t y0 = P_.ORGY- height;
+ lcd_->DrawVLine(X(P_.MIN), y0, height); // 最小値に対応する線
+
+ float du = powf(10.0, logMin); // 座標値の増分
+ float u1 = (floorf(P_.MIN/du) + 1.0f)*du; // 最小値に対応する線の次の座標値
+
+ for (int n=0; n<=loop; n++)
+ {
+ float uMax = (10.0f*du < P_.MAX) ? 10.0f*du : P_.MAX;
+ for (float u=u1; u<uMax*0.99f; u+=du)
+ lcd_->DrawVLine(X(u), y0, height);
+
+ du = uMax; // 値の増分を 10 倍する
+ u1 = du; // 次の for ループ の最初の値
+ }
+
+ lcd_->DrawVLine(X(P_.MAX), y0, height); // 最大値に対応する線
+
+ uint16_t width = X(P_.MAX) - X(P_.MIN);
+ for (int n=0; n<= (P_.MAX_DB - P_.MIN_DB)/10; n++)
+ lcd_->DrawHLine(X(P_.MIN), P_.ORGY-P_.DB10*n, width);
+ }
+
+ // 縦軸の数値の表示
+ void FrqRespDrawer::DrawNumericY(int offsetX, int offsetY, int count,
+ uint16_t d_dB, const char fmt[], sFONT &fonts,
+ uint32_t textColor)
+ {
+ uint16_t x0 = P_.ORG + offsetX;
+ uint16_t y0 = P_.ORGY + offsetY;
+ for (int n=0; n<count; n++)
+ new NumericLabel<int>(x0, y0-n*d_dB*DB1_,
+ fmt, (int)(P_.MIN_DB+d_dB*n));
+ }
+
+ // 周波数特性のグラフの描画
+ void FrqRespDrawer::DrawGraph()
+ {
+ lcd_->SetTextColor(P_.LINE_COLOR);
+ uint16_t width = X(P_.MAX) - X(P_.MIN);
+ uint16_t x1 = 0;
+ uint16_t y1 = 0;
+ float pi2FsM = -6.283185f/P_.FS; // -2*PI*Ts
+ for (int n=0; n<=width; n++)
+ {
+ float frq = PosToFrq(n+P_.ORG);
+ uint16_t x2 = X(frq);
+
+ float absHz = AbsH_z(exp(Complex(0, pi2FsM*frq)));
+ float dB = (absHz > 0.001f) ? 20.0f*log10f(absHz) : P_.MIN_DB;
+ uint16_t y2 = P_.ORGY - Round((dB - P_.MIN_DB)*DB1_);
+ if (y2 > P_.ORGY) y2 = P_.ORGY;
+
+ if (n != 0) lcd_->DrawLine(x1, y1, x2, y2);
+
+ x1 = x2;
+ y1 = y2;
+ }
+ lcd_->SetTextColor(P_.AXIS_COLOR);
+ lcd_->DrawHLine(X(P_.MIN), P_.ORGY, width);
+ }
+
+ // 消去
+ void FrqRespDrawer::Erase()
+ {
+ lcd_->SetTextColor(P_.BACK_COLOR);
+ uint16_t height = DB1_*(P_.MAX_DB - P_.MIN_DB);
+ lcd_->FillRect(P_.ORG, P_.ORGY- height, X(P_.MAX)-X(P_.MIN)+1, height+1);
+ }
+}