75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
//////////////////////////////////////////////////////////////////////////////////
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/// \file audio.c
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/// \brief Audio thread
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/// \author Pascal Sartoretti (sap at hevs dot ch)
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/// \version 1.0 - original
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/// \date 2018-02
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//////////////////////////////////////////////////////////////////////////////////
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#include "stm32f7xx_hal.h"
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#include <stdio.h>
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#include "main.h"
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#include "audio_msg.c"
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#include "audio_error.c"
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#include "audio_clock.c"
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#include "Board_Audio.h"
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extern uint8_t gI2CAccess;
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//////////////////////////////////////////////////////////////////////////////////
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// THREAD AUDIO
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//////////////////////////////////////////////////////////////////////////////////
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void AudioPlayer(void *argument)
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{
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int32_t eventFlag; // current flag
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//------------------------------------------------------------------------------
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// Initialize the audio interface (need to be intialised first)
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// this thread has a most important priority and block kernel switch when
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// intilalising the audio interface
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//------------------------------------------------------------------------------
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while(gI2CAccess != 0){}
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osKernelLock();
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Audio_Initialize (NULL);
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Audio_SetDataFormat(AUDIO_STREAM_OUT, AUDIO_DATA_16_MONO);
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Audio_SetFrequency (AUDIO_STREAM_OUT,16000);
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Audio_SetMute (AUDIO_STREAM_OUT, AUDIO_CHANNEL_MASTER, false);
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Audio_SetVolume (AUDIO_STREAM_OUT, AUDIO_CHANNEL_MASTER, 50);
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Audio_Start (AUDIO_STREAM_OUT);
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//------------------------------------------------------------------------------
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// Bacause of audio initialize use the I2C interrupts and the uGFX touch
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// protocol don't use it, we neeed to clear this register
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// I2C3->CR1 = 0;
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osKernelUnlock();
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//------------------------------------------------------------------------------
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while (1) // forever
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{
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//----------------------------------------------------------------------------
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// EVENT GET wait always (AUDIO_xxx_EVT)
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//----------------------------------------------------------------------------
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eventFlag = osEventFlagsWait(
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eventFlag_id,
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AUDIO_MSG_EVT | AUDIO_ERROR_EVT| AUDIO_CLOCK_EVT,
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osFlagsWaitAny,
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osWaitForever);
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if(eventFlag < 0) // case of error
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CheckRetCode(eventFlag,__LINE__,__FILE__,CONTINUE);
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//----------------------------------------------------------------------------
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if((eventFlag & AUDIO_MSG_EVT) == AUDIO_MSG_EVT) // play incoming message
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{
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Audio_SendData(audio_msg, sizeof(audio_msg)/2);
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}
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if((eventFlag & AUDIO_ERROR_EVT) == AUDIO_ERROR_EVT) // play error message
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{
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Audio_SendData(audio_error, sizeof(audio_error)/2);
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}
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if((eventFlag & AUDIO_CLOCK_EVT) == AUDIO_CLOCK_EVT) // play clock message
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{
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Audio_SendData(audio_clock, sizeof(audio_clock)/2);
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}
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}
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}
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