Diff: main.cpp

Revision:

0:230fb37e5561

Child:

1:a5792f051953

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 20 05:54:49 2015 +0000
@@ -0,0 +1,209 @@
+//------------------------------------------------------------------------------
+//  "UITDSP_ADDA" に含まれるライブラリの使用例
+//
+//      アナログ入力
+//          A0: ライン
+//          A1: マイク
+//          A2: 可変抵抗器
+//
+//  2015/02/20, Copyright (c) 2015 MIKAMI, Naoki
+//------------------------------------------------------------------------------
+
+#include "InternalADC.hpp"      //　かならず必要 
+
+// 以下の "#define" 文を一つだけ有効にし，他はコメントとすること
+#define POLLING_1_CHANNEL
+//#define POLLING_SW_CHANNEL
+//#define INTERRUPT_1_CHANNEL
+//#define INTERRUPT_2_CHANNELS
+//#define POLLING_DA_2_CHANNELS
+
+using namespace Mikami;         //　かならず必要 
+
+//------------------------------------------------------------------------------
+// 基本的な使い方：ポーリング，１チャンネル
+
+#ifdef POLLING_1_CHANNEL
+#include "DAC_MCP4921.hpp"
+
+const int TS_ = 100;    // 標本化間隔： 0.1 [ms]
+InternalADC adc_(A0);   // A0 からの入力を使うように設定
+DAC_MCP4921 myDac_;     // DAC を使うための設定
+
+int main()
+{
+    printf("\r\nPOLLING_1_CHANNEL\r\n");
+    
+    adc_.SetSamplingPeriod(TS_);    // 標本化間隔の設定
+    myDac_.ScfClockTim3(420000);    // 出力の LPF の遮断周波数を 4.2 kHz に設定
+
+    while (true)
+    {
+        float xn = adc_.Read();     // A0 からの入力信号を読み込む
+        //-----------------------------------------------
+        // この部分に信号処理のプログラムを記述する
+        
+        float yn = xn;  // 処理を行わず，そのまま出力する
+        //-----------------------------------------------
+        myDac_.Write(yn);           // DAC へ出力する
+    }
+}
+#endif  // POLLING_1_CHANNEL
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// ポーリングで入力の切り替えを行う場合
+
+#ifdef POLLING_SW_CHANNEL
+#include "DAC_MCP4921.hpp"
+
+const int TS_ = 100;    // Sampling period: 0.1 ms
+InternalADC adc_(A0, A1);   // for AD
+DAC_MCP4921 myDac_;         // for DA
+
+DigitalIn sw_(D2, PullDown);
+
+int main()
+{
+    printf("\r\nPOLLING_SW_CHANNEL\r\n");
+
+    adc_.SetSamplingPeriod(TS_);
+    myDac_.ScfClockTim3(420000);    // cutoff frequency: 4.2 kHz
+
+    int swBefore = 0;
+    while (true)
+    {
+        float xn = adc_.Read();     // Read from A0
+        //-----------------------------------------------
+        float yn = xn;
+        //-----------------------------------------------
+        myDac_.Write(yn);           // Write to DAC
+
+        int swNow = sw_.read();
+        if (swNow != swBefore)
+        {
+            if (swNow == 0) adc_.Select1stChannel(); // line input
+            else            adc_.Select2ndChannel(); // mic. input
+            swBefore = swNow;
+        }
+    }
+}
+#endif  // POLLING_SW_CHANNEL
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// ADC の EOC 割り込みを使う場合，入力：１チャンネル
+
+#ifdef INTERRUPT_1_CHANNEL
+#include "ADC_Interrupt.hpp"    // for ADC not using ADC interrupt
+#include "DAC_MCP4922.hpp"
+
+const int TS_ = 100;    // Sampling period: 0.1 ms
+ADC_Intr adc_(A0);  // for AD
+DAC_MCP4922 myDac_; // for DA
+
+// Interrupt service routine for ADC
+void AdcIsr()
+{   
+    float xn = adc_.Read(); // Read from A0
+    myDac_.Write(xn);       // to DAC
+}
+
+int main()
+{
+    printf("\r\nINTERRUPT_1_CHANNEL\r\n");
+
+    adc_.SetSamplingPeriod(TS_);
+    myDac_.ScfClockTim3(420000);    // cutoff frequency: 4.2 kHz
+
+    adc_.SetIntrVec(AdcIsr);        // Assign ISR for ADC interrupt
+
+    while (true) {}
+}
+#endif  // INTERRUPT_1_CHANNEL
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+//　ADC の EOC 割り込みを使う場合で，２チャンネル使う場合
+
+#ifdef INTERRUPT_2_CHANNELS
+#include "ADC_Interrupt.hpp"    // for ADC not using ADC interrupt
+#include "DAC_MCP4922.hpp"
+
+//      A0: Line input
+//      A1: Not used
+//      A2: VR (controls volume of output signal)
+const int TS_ = 100;    // Sampling period: 0.1 ms
+ADC_Intr adc_(A0, A1, A2);   // for AD
+DAC_MCP4922 myDac_(DAC_MCP4922::DAC_A, D11, D13, D10, D12);     // for DA
+
+uint16_t a2_ = 0;
+uint16_t a21_ = 0;
+float vol_ = 1.0f;
+
+// Interrupt service routine for ADC
+void AdcIsr()
+{   
+    float xn = adc_.Read();     // Read from A0
+
+    adc_.Select3rdChannel();    // Enable A2   
+    adc_.SoftStartDisableIRQ(); // ADC start for A2 input
+    
+    float yn = vol_*xn; // Volume control by VR
+    myDac_.Write(yn);   // to DAC
+
+    // Read value which controls volume
+    a2_ = adc_.ReadWait_u16();
+
+    adc_.Select1stChannel();        // Enable A0
+    adc_.ClearPending_EnableIRQ();  // Clear pending interrupt
+}
+
+int main()
+{
+    printf("\r\nINTERRUPT_2_CHANNELS\r\n");
+
+    adc_.SetSamplingPeriod(TS_);
+    myDac_.ScfClockTim3(420000);    // cutoff frequency: 4.2 kHz
+
+    adc_.SetIntrVec(AdcIsr);        // Assign ISR for ADC interrupt
+
+    while (true)
+    {
+        if (abs(a2_ - a21_) > 10)
+        {
+            vol_ = ((float)a2_)/4095.0f;
+            a21_ = a2_;
+        }
+        wait(0.1f);
+    }
+}
+#endif  // INTERRUPT_2_CHANNEL
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// DAC を２チャンネル出力で使う場合, 入力：ポーリング，１チャンネル
+
+#ifdef POLLING_DA_2_CHANNELS
+#include "DAC_MCP4922Dual.hpp"
+
+InternalADC adc_(A0);   // for AD
+DAC_MCP4922Dual myDac_; // for DA
+
+int main()
+{
+    printf("\r\nPOLLING_DA_2_CHANNELS\r\n");
+    adc_.SetSamplingPeriod(20); // 20 micro seconds
+
+    while (true)
+    {
+        float xn = adc_.Read();     // Read from A0
+        //-----------------------------------------------
+        float yn = xn;
+        //-----------------------------------------------
+        myDac_.Write(yn, yn);       // Write to DAC
+    }
+}
+#endif  // POLLING_DA_2_CHANNEL
+//------------------------------------------------------------------------------
+