/*******************************************************************************
* Function Name : I2S_CODEC_Play
* Description : Plays the audio file.
* Input : - AudioStartPosition: Adress from which the wave data begin
* Output : None
* Return : AudioDataIndex value.
*******************************************************************************/
uint32_t I2S_CODEC_Play(uint32_t AudioStartPosition)
{
/* Set Playing status to inform other modules about the codec status */
SetVar_AudioPlayStatus(AudioPlayStatus_PLAYING);
/* Enable the I2S2 TXE Interrupt => Generate the clocks*/
SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_TXE, ENABLE);
return AudioDataIndex;
}
/*******************************************************************************
* Function Name : SetVar_AudioReplay
* Description : Decrement the AudioReplayCount variable if AudioReplay is different
* : from zero (infinite replaying).
* Input : None.
* Output : None
* Return : AudioPlayStatus value.
*******************************************************************************/
void Decrement_AudioReplay(void)
{
if (AudioReplay != 0)
{
AudioReplayCount--;
if (AudioReplayCount == 0)
{
/* Command the Stop of the audio playing */
SetVar_AudioPlayStatus(AudioPlayStatus_STOPPED);
/* Reset the counter */
AudioReplayCount = AudioReplay;
}
}
}
/*******************************************************************************
* Function Name : WavePlayer_StartSpeaker
* Description : Starts the wave player application.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WavePlayer_StartSpeaker(void)
{
uint8_t MyKey = 0;
uint32_t err = 0, Counter = 0x0;
LCD_Clear(White);
/* Disable the JoyStick interrupts */
IntExtOnOffConfig(DISABLE);
while(ReadKey() != NOKEY)
{
}
/* Display the welcome screen and the commands */
LCD_Update(ALL);
/* Choose number of repetitions: 0 => infinite repetitions */
I2S_CODEC_ReplayConfig(0);
I2S_CODEC_Init(OutputDevice_SPEAKER, AUDIO_FILE_ADDRESS);
/* Endless loop */
while(1)
{
/* Check which key is pressed */
MyKey = ReadKey();
if(Counter == 0)
{
/* Mask All Interrupts */
__disable_irq();
/* Update the displayed progression information */
LCD_Update(PROGRESS);
Counter = 0x5FFFF;
/* Disable mask of all interrupts */
__enable_irq();
}
Counter--;
/* If "UP" pushbutton is pressed */
if(MyKey == UP)
{
/* Mask All Interrupts */
__disable_irq();
/* Check if the Codec is PLAYING audio file */
if (GetVar_AudioPlayStatus() == AudioPlayStatus_PLAYING)
{
I2S_CODEC_ControlVolume(VolumeDirection_HIGH, VOLStep);
/* Update the display information */
LCD_Update(VOL);
}
/* UP bottomn pushed in PAUSE mode => Enable the Speaker device output ---*/
else
{
/* Update the display information */
LCD_Update(PLAY);
/* Configure the Speaker as output and reinitialize all devices */
err = I2S_CODEC_SpeakerHeadphoneSwap(OutputDevice_SPEAKER, AUDIO_FILE_ADDRESS);
/* Error message display if failure */
if (err != 0)
{
LCD_DisplayError(err);
/* Enable the FSMC that share a pin w/ I2C1 (LBAR) */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Clear the LCD */
LCD_Clear(White);
/* Display the previous menu */
DisplayMenu();
/* Disable mask of all interrupts */
__enable_irq();
/* Enable the JoyStick interrupts */
IntExtOnOffConfig(ENABLE);
return;
}
}
/* Disable mask of all interrupts */
__enable_irq();
}
/* If "DOWN" pushbutton is pressed */
if(MyKey == DOWN)
{
/* Mask All Interrupts */
__disable_irq();
/* If the Codec is PLAYING => Decrease Volume*/
if (GetVar_AudioPlayStatus() == AudioPlayStatus_PLAYING)
{
/* Increase the audio codec digital volume */
I2S_CODEC_ControlVolume(VolumeDirection_LOW, VOLStep);
/* Update the LCD display */
LCD_Update(VOL);
}
else /* If the Codec is PAUSED => Headphone Enable */
{
/* Update the LCD display */
LCD_Update(PLAY);
/* Enable the Headphone output and reinitialize all devices */
err = I2S_CODEC_SpeakerHeadphoneSwap(OutputDevice_HEADPHONE, AUDIO_FILE_ADDRESS);
/* Error message display if failure */
if (err != 0)
{
LCD_DisplayError(err);
/* Enable the FSMC that share a pin w/ I2C1 (LBAR) */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Clear the LCD */
LCD_Clear(White);
/* Display the previous menu */
DisplayMenu();
/* Disable mask of all interrupts */
__enable_irq();
/* Enable the JoyStick interrupts */
IntExtOnOffConfig(ENABLE);
return;
}
}
/* Disable mask of all interrupts */
__enable_irq();
}
/* If "RIGHT" pushbutton is pressed */
if(MyKey == RIGHT)
{
/* Mask All Interrupts */
__disable_irq();
/* Check if the Codec is PLAYING audio file */
if (GetVar_AudioPlayStatus() == AudioPlayStatus_PLAYING)
{
I2S_CODEC_ForwardPlay(STEP_FORWARD);
/* Update the display information */
LCD_Update(FRWD);
}
/* Disable mask of all interrupts */
__enable_irq();
}
/* If "LEFT" pushbutton is pressed */
if(MyKey == LEFT)
{
/* Mask All Interrupts */
__disable_irq();
/* Check if the Codec is PLAYING audio file */
if (GetVar_AudioPlayStatus() == AudioPlayStatus_PLAYING)
{
I2S_CODEC_RewindPlay(STEP_BACK);
/* Update the display information */
LCD_Update(FRWD);
}
/* Disable mask of all interrupts */
__enable_irq();
}
/* If "SEL" pushbutton is pressed */
if(MyKey == SEL)
{
/* Mask All Interrupts */
__disable_irq();
/* Update the display information */
LCD_Update(STOP);
/* Command the Stop of the current audio stream */
SetVar_AudioPlayStatus(AudioPlayStatus_STOPPED);
/* Disable mask of all interrupts */
__enable_irq();
I2S_CODEC_Stop();
SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_TXE, DISABLE);
/* Enable the FSMC that share a pin w/ I2C1 (LBAR) */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Clear the LCD */
LCD_Clear(White);
/* Display the previous menu */
DisplayMenu();
/* Enable the JoyStick interrupts */
IntExtOnOffConfig(ENABLE);
return;
}
/* If "KEY" pushbutton is pressed */
if(MyKey == KEY)
{
/* Mask All Interrupts */
__disable_irq();
/* If the Codec is Playing => PAUSE */
if (GetVar_AudioPlayStatus() == AudioPlayStatus_PLAYING)
{
/* Update the display information */
LCD_Update(PAUSE);
/* Command the Pause of the current stream */
SetVar_AudioPlayStatus(AudioPlayStatus_PAUSED);
}
/* If the Codec is PAUSED => Resume PLAYING */
else if (GetVar_AudioPlayStatus() == AudioPlayStatus_PAUSED)
{
/* Update the LCD display */
LCD_Update(PLAY);
/* Start playing from the last saved position */
I2S_CODEC_Play(GetVar_AudioDataIndex());
}
/* If the Codec is STOPPED => PLAY from the file start address */
else if (GetVar_AudioPlayStatus() == AudioPlayStatus_STOPPED)
{
/* Update the display information */
LCD_Update(PLAY);
/* Initialize all devices w/choosen parameters */
err = I2S_CODEC_Init(GetVar_CurrentOutputDevice(), AUDIO_FILE_ADDRESS);
/* Error message display if failure */
if (err != 0)
{
LCD_DisplayError(err);
/* Enable the FSMC that share a pin w/ I2C1 (LBAR) */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Clear the LCD */
LCD_Clear(White);
/* Display the previous menu */
DisplayMenu();
/* Disable mask of all interrupts */
__enable_irq();
/* Enable the JoyStick interrupts */
IntExtOnOffConfig(ENABLE);
return;
}
/* Enable Playing the audio file */
I2S_CODEC_Play(GetVar_DataStartAddr());
}
/* Disable mask of all interrupts */
__enable_irq();
}
}
}
