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/sai_io_o.hpp
- Revision:
- 0:6748e3332e85
- Child:
- 5:4a99dabc9180
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyClasses_Functions/sai_io_o.hpp Fri Apr 08 13:11:53 2016 +0000
@@ -0,0 +1,59 @@
+//-----------------------------------------------------------
+// SiaIO class for output (Header)
+// 2016/02/16, Copyright (c) 2016 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#ifndef F746_SAI_IO_HPP
+#define F746_SAI_IO_HPP
+
+#include "mbed.h"
+#include "stm32746g_discovery_audio.h"
+#include "BSP_AudioOut_Overwrite.hpp"
+
+namespace Mikami
+{
+ class SaiIO_O
+ {
+ public:
+ SaiIO_O(int size, int fs);
+
+ void InitCodecOut();
+
+ bool IsXferred();
+ void Output(int16_t xL, int16_t xR);
+
+ void ResetXferred() { xferred_ = false; }
+ int32_t GetLength() { return nData_; }
+ void Stop() { BSP_AUDIO_OUT_Stop(CODEC_PDWN_SW); }
+ void Pause() { BSP_AUDIO_OUT_Pause(); }
+ void Resume() { BSP_AUDIO_OUT_Resume(); }
+
+
+ // These three member functions are called from
+ // callback functions in "BSP_AudioOut_Overwrite.cpp"
+
+ // Called form BSP_AUDIO_OUT_HalfTransfer_CallBack()
+ static void FillBuffer1st() { FillBuffer(0); }
+ // Called form BSP_AUDIO_OUT_TransferComplete_CallBack()
+ static void FillBuffer2nd() { FillBuffer(bufferSize_/2); }
+ // Also called form BSP_AUDIO_OUT_Error_CallBack()
+ static void ErrorTrap();
+
+ private:
+ const int FS_;
+ static const uint8_t VOLUME_OUT_ = 90;
+
+ static int32_t nData_;
+ static int32_t bufferSize_;
+
+ static int16_t* outBuffer_;
+ static int16_t* tmp_;
+
+ static __IO bool xferred_;
+
+ __IO int32_t tmpIndex_;
+
+ static void FillBuffer(uint32_t offset);
+ };
+}
+#endif // F746_SAI_IO_HPP