不韋 呂 / F746_SAI_IO

SAI_IO class for using CODEC (MW8994) as analog input and output. このライブラリを登録した際のプログラム：「F746_AudioIO_Demo」

Dependencies:   Array_Matrix

Dependents:   F746_SD_WavPlayer F746_SD_GraphicEqualizer_ren0620 Joerg_turbo_ede CW_Decoder_using_FFT_on_DiscoF746NG ... more

Diff: SAI_InOut.cpp

Revision:
1:48ed86c8430a
Parent:
0:eade5d3ae0eb
Child:
2:1aef7b703249
--- a/SAI_InOut.cpp	Thu May 05 11:12:45 2016 +0000
+++ b/SAI_InOut.cpp	Mon May 09 08:32:03 2016 +0000
@@ -1,6 +1,6 @@
 //-----------------------------------------------------------
 //  SiaIO class
-//  2016/05/05, Copyright (c) 2016 MIKAMI, Naoki
+//  2016/05/09, Copyright (c) 2016 MIKAMI, Naoki
 //-----------------------------------------------------------
 
 #include "SAI_InOut.hpp"
@@ -70,6 +70,14 @@
         xR = inBuffer_[inIndex_++];
     }
 
+    void SaiIO::PlayOut()
+    {
+        if (BSP_AUDIO_OUT_Play((uint16_t *)outBuffer_,
+                               bufferSize_*AUDIODATA_SIZE) == AUDIO_ERROR)
+            ErrorTrap();
+        ClearBuffer();
+    }
+
     bool SaiIO::IsXferred()
     {
         if (!xferred_) return false;
@@ -152,16 +160,14 @@
         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();
             
         // Set output volume of headphone maximum
         //      AUDIO_IO_Write() is defined in "stm32746g_discovery.c"
         //      AUDIO_I2C_ADDRESS is defined in "stm32746g_discovery.h"
         AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x1C, 0x17F); // 0x1C: R28 of WM8994
         AUDIO_IO_Write(AUDIO_I2C_ADDRESS, 0x1D, 0x17F); // 0x1D: R29 of WM8994
+
+        PlayOut();
     }
 
     void SaiIO::ClearBuffer()
@@ -196,4 +202,3 @@
     int16_t* SaiIO::tmp_;       
     __IO bool SaiIO::xferred_;
 }
-