Diff: main.cpp

Revision:

0:47e72130375e

Child:

1:b3a60a05da72

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Oct 31 07:37:36 2014 +0000
@@ -0,0 +1,44 @@
+//--------------------------------------------------------------
+// Reverb system using comb filter
+// 2014/10/31, Copyright (c) 2014 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#include "mbed.h"
+
+#include "ADC_Base.hpp"         // for ADC not using interrupt
+#include "DAC_MCP4922.hpp"      // for DAC MCP4922
+#include "ScfClockTim3.hpp"     // for clock supplied to SCF
+
+#include "comb_filter.hpp"
+
+using namespace Mikami;
+
+const int FS_ = 12000;  // Sampling frequency: 12 kHz
+ADC_Base adc_(A0, FS_); // for AD
+DAC_MCP4922 myDac_;     // for DA
+
+const float G_C_ = 0.8f;
+const float G0_ = 1.0f - G_C_;
+CombFilter<1153> comb_(G_C_);
+
+DigitalIn sw_(D2, PullDown);
+
+int main()
+{
+
+    
+    ScfClockTim3(500000);       // cutoff frequency: 5 kHz
+    while (true)
+    {
+        float xn = adc_.Read(); // Read from A0
+        //-----------------------------------------------
+
+        float yn;
+        if (sw_.read() == 1) yn = comb_.Execute(G0_*xn);
+        else                 yn = xn;
+
+        //-----------------------------------------------
+        myDac_.Write(yn);       // Write to DAC
+    }
+}
+