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.cpp
- Revision:
- 0:6748e3332e85
- Child:
- 5:4a99dabc9180
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyClasses_Functions/sai_io_o.cpp Fri Apr 08 13:11:53 2016 +0000
@@ -0,0 +1,77 @@
+//-----------------------------------------------------------
+// SiaIO class for output
+// 2016/02/16, Copyright (c) 2016 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#include "sai_io_o.hpp"
+
+namespace Mikami
+{
+ SaiIO_O::SaiIO_O(int size, int fs) : FS_(fs), tmpIndex_(0)
+ {
+ nData_ = size;
+ bufferSize_ = (size*2)*2;
+ outBuffer_ = new int16_t[(size*2)*2];
+ tmp_ = new int16_t[size*2];
+ xferred_ = false;
+ }
+
+ void SaiIO_O::InitCodecOut()
+ {
+ if (BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_HEADPHONE, VOLUME_OUT_, FS_) == AUDIO_ERROR)
+ ErrorTrap();
+ for (int n=0; n<bufferSize_; n++) outBuffer_[n] = 0;
+ for (int n=0; n<nData_*2; n++) tmp_[n] = 0;
+
+ NVIC_SetVector(AUDIO_OUT_SAIx_DMAx_IRQ, (uint32_t)AUDIO_OUT_SAIx_DMAx_IRQHandler);
+ BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
+
+ if (BSP_AUDIO_OUT_Play((uint16_t *)outBuffer_,
+ bufferSize_*AUDIODATA_SIZE) == AUDIO_ERROR)
+ ErrorTrap();
+ }
+
+ bool SaiIO_O::IsXferred()
+ {
+ if (xferred_)
+ {
+ tmpIndex_ = 0;
+ return true;
+ }
+ else
+ return false;
+ }
+
+ void SaiIO_O::Output(int16_t xL, int16_t xR)
+ {
+ tmp_[tmpIndex_++] = xL; // Left
+ tmp_[tmpIndex_++] = xR; // Right
+ }
+
+ void SaiIO_O::ErrorTrap()
+ {
+ DigitalOut led1(LED1);
+ fprintf(stderr, "\r\n### ERROR\r\n");
+ while(true)
+ {
+ led1 = !led1;
+ wait_ms(250);
+ }
+ }
+
+ void SaiIO_O::FillBuffer(uint32_t offset)
+ {
+ int k = offset;
+ for (int n=0; n<nData_*2; n++)
+ outBuffer_[k++] = tmp_[n];
+ xferred_ = true;
+ }
+
+ // Instances for static variables
+ int32_t SaiIO_O::nData_;
+ int32_t SaiIO_O::bufferSize_;
+ int16_t* SaiIO_O::outBuffer_;
+ int16_t* SaiIO_O::tmp_;
+ __IO bool SaiIO_O::xferred_;
+}
+