不韋 呂
CQエレクトロニクス･セミナ「実習・マイコンを動かしながら学ぶディジタル･フィルタ」で使うプログラム．雛形として使う． http://seminar.cqpub.co.jp/ccm/ES18-0020
Dependencies: F746_GUI F746_SAI_IO mbed
Diff: MyFiles/WaveformDisplay.cpp
- Revision:
- 0:b6d17af0f47a
- Child:
- 3:05c8d0ee9c37
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyFiles/WaveformDisplay.cpp Fri Sep 29 12:50:44 2017 +0000
@@ -0,0 +1,55 @@
+//-----------------------------------------------------------
+// Class for waveform display
+//
+// 2017/07/24, Copyright (c) 2017 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#include "WaveformDisplay.hpp"
+
+namespace Mikami
+{
+ void WaveformDisplay::Execute(int start, int factor)
+ {
+ Axis();
+ dt_ = factor;
+ Draw(xn_, start, LINE_COLOR1_);
+ Draw(yn_, start, LINE_COLOR2_);
+ lcd_.SetTextColor(BACK_COLOR_);
+ }
+
+ // Clipping
+ uint16_t WaveformDisplay::Clip(int16_t xn)
+ {
+ int16_t x = xn >> R_SHIFT_;
+ if (x > LIMIT_ ) x = LIMIT2_;
+ if (x < -LIMIT_ ) x = -LIMIT2_ ;
+ return Y0_ - x;
+ }
+
+ void WaveformDisplay::Draw(const Array<int16_t>& xn, int start, uint32_t color)
+ {
+ lcd_.SetTextColor(color);
+ uint16_t x1 = X0_;
+ uint16_t y1 = Clip(xn[start]);
+// for (int n=1; n<N_DATA_; n++)
+ for (int n=1; n<N_DATA_/dt_; n++)
+ {
+// uint16_t x2 = X0_ + n;
+ uint16_t x2 = X0_ + n*dt_;
+ uint16_t y2 = Clip(xn[start+n]);
+ lcd_.DrawLine(x1, y1, x2, y2);
+
+ x1 = x2;
+ y1 = y2;
+ }
+ }
+
+ void WaveformDisplay::Axis()
+ {
+ lcd_.SetTextColor(BACK_COLOR_);
+ lcd_.FillRect(X0_, Y0_-LIMIT2_, N_DATA_, LIMIT2_*2+1);
+
+ lcd_.SetTextColor(AXIS_COLOR_);
+ lcd_.DrawLine(X0_-5, Y0_, X0_+N_DATA_+5, Y0_);
+ }
+}