/**
* @brief Pause Audio stream
* @param None.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_PauseResume(void)
{
if(haudio.in.state == AUDIO_RECORDER_PLAYING)
{
osThreadSuspend(AudioThreadId);
BSP_AUDIO_OUT_Pause();
haudio.in.state = AUDIO_RECORDER_PLAY_PAUSE;
}
else if(haudio.in.state == AUDIO_RECORDER_RECORDING)
{
osThreadSuspend(AudioThreadId);
BSP_AUDIO_IN_Pause();
haudio.in.state = AUDIO_RECORDER_RECORD_PAUSE;
}
else if(haudio.in.state == AUDIO_RECORDER_PLAY_PAUSE)
{
osThreadResume(AudioThreadId);
BSP_AUDIO_OUT_Resume();
haudio.in.state = AUDIO_RECORDER_PLAYING;
}
else if(haudio.in.state == AUDIO_RECORDER_RECORD_PAUSE)
{
osThreadResume(AudioThreadId);
BSP_AUDIO_IN_Resume();
haudio.in.state = AUDIO_RECORDER_RECORDING;
}
return AUDIO_RECORDER_ERROR_NONE;
}
/**
* @brief Toggle LED2 thread
* @param argument not used
* @retval None
*/
static void LED_Thread2(void const *argument)
{
uint32_t count;
(void) argument;
for(;;)
{
count = osKernelSysTick() + 10000;
/* Toggle LED2 every 500 ms for 10 s */
while (count >= osKernelSysTick())
{
BSP_LED_Toggle(LED2);
osDelay(500);
}
/* Turn off LED2 */
BSP_LED_Off(LED2);
/* Resume Thread 1 */
osThreadResume(LEDThread1Handle);
/* Suspend Thread 2 */
osThreadSuspend(NULL);
}
}
/**
* @brief Semaphore Thread 2 function
* @param argument: shared semaphore
* @retval None
*/
static void SemaphoreThread2 (void const *argument)
{
uint32_t count = 0;
osSemaphoreId semaphore = (osSemaphoreId) argument;
for(;;)
{
if (semaphore != NULL)
{
/* Try to obtain the semaphore. */
if(osSemaphoreWait(semaphore , 0) == osOK)
{
/* Resume Thread 1 (higher priority)*/
osThreadResume(SemThread1Handle);
count = osKernelSysTick() + 5000;
/* Toggle LED3 every 200 ms for 5 seconds*/
while (count >= osKernelSysTick())
{
BSP_LED_Toggle(LED3);
osDelay(200);
}
/* Turn off LED3 */
BSP_LED_Off(LED3);
/* Release the semaphore to unblock Thread 1 (higher priority) */
osSemaphoreRelease(semaphore);
}
}
}
}
/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_Play(uint32_t frequency)
{
uint32_t numOfReadBytes;
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_AUTO, DEFAULT_REC_AUDIO_VOLUME, DEFAULT_AUDIO_IN_FREQ);
BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
/* Fill whole buffer @ first time */
if(f_read(&wav_file,
&haudio.buff[0],
AUDIO_OUT_BUFFER_SIZE,
(void *)&numOfReadBytes) == FR_OK)
{
if(numOfReadBytes != 0)
{
if(haudio.in.state == AUDIO_RECORDER_SUSPENDED)
{
osThreadResume(AudioThreadId);
}
haudio.in.state = AUDIO_RECORDER_PLAYING;
BSP_AUDIO_OUT_Play((uint16_t*)&haudio.buff[0], AUDIO_OUT_BUFFER_SIZE);
return AUDIO_RECORDER_ERROR_NONE;
}
}
return AUDIO_RECORDER_ERROR_IO;
}
/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_StartRec(uint32_t frequency)
{
uint32_t byteswritten = 0;
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
haudio.ppcm = 0;
/* Write header file */
if(f_write(&wav_file, pHeaderBuff, 44, (void*)&byteswritten) == FR_OK)
{
if(byteswritten != 0)
{
BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
BSP_AUDIO_IN_Record((uint16_t*)&haudio.pdm[0], AUDIO_IN_PDM_BUFFER_SIZE);
if(haudio.in.state == AUDIO_RECORDER_SUSPENDED)
{
osThreadResume(AudioThreadId);
}
haudio.in.state = AUDIO_RECORDER_RECORDING;
haudio.in.fptr = byteswritten;
return AUDIO_RECORDER_ERROR_NONE;
}
}
return AUDIO_RECORDER_ERROR_IO;
}
/**
* @brief Toggle LED3 thread
* @param argument not used
* @retval None
*/
static void LED_Thread2(void const *argument)
{
uint32_t count;
(void) argument;
for (;;)
{
count = osKernelSysTick() + 10000;
while (count >= osKernelSysTick())
{
BSP_LED_On(LED3);
osDelay(100);
BSP_LED_Off(LED3);
osDelay(100);
BSP_LED_On(LED3);
osDelay(100);
BSP_LED_Off(LED3);
HAL_Delay(1000);
}
/* Turn off LED3 */
BSP_LED_Off(LED3);
/* Resume Thread 1 */
osThreadResume(LEDThread1Handle);
/* Suspend Thread 2 */
osThreadSuspend(NULL);
}
}
/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_StartRec(uint32_t frequency)
{
uint32_t byteswritten = 0;
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
/* Write header file */
if(f_write(&wav_file, pHeaderBuff, 44, (void*)&byteswritten) == FR_OK)
{
if(byteswritten != 0)
{
BSP_AUDIO_IN_Init(INPUT_DEVICE_DIGITAL_MICROPHONE_2, haudio.in.volume, DEFAULT_AUDIO_IN_FREQ);
BSP_AUDIO_IN_Record((uint16_t*)&haudio.buff[0], AUDIO_IN_BUFFER_SIZE/2);
if(haudio.in.state == AUDIO_RECORDER_SUSPENDED)
{
osThreadResume(AudioThreadId);
}
haudio.in.state = AUDIO_RECORDER_RECORDING;
haudio.in.fptr = byteswritten;
return AUDIO_RECORDER_ERROR_NONE;
}
}
return AUDIO_RECORDER_ERROR_IO;
}
/**
* @brief Resume Audio stream
* @param None.
* @retval Audio state.
*/
AUDIOPLAYER_ErrorTypdef AUDIOPLAYER_Resume(void)
{
if(AudioThreadId != 0)
{
osThreadResume(AudioThreadId);
}
BSP_AUDIO_OUT_Resume();
return AUDIOPLAYER_ERROR_NONE;
}
/**
* @brief Toggle LED1
* @param thread not used
* @retval None
*/
static void LED_Thread1(void const *argument)
{
(void) argument;
for (;;)
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
osDelay(2000);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET);
osThreadSuspend(LEDThread2Handle);
osDelay(1900);
osThreadResume(LEDThread2Handle);
}
}
/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIOPLAYER_ErrorTypdef AUDIOPLAYER_Play(uint32_t frequency)
{
uint32_t numOfReadBytes;
haudio.state = AUDIOPLAYER_PLAY;
/* Fill whole buffer @ first time */
if(f_read(&wav_file,
&haudio.buffer[0],
AUDIO_BUFFER_SIZE,
(void *)&numOfReadBytes) == FR_OK)
{
if(numOfReadBytes != 0)
{
BSP_AUDIO_OUT_SetFrequency(frequency);
osThreadResume(AudioThreadId);
BSP_AUDIO_OUT_Play((uint16_t*)&haudio.buffer[0], AUDIO_BUFFER_SIZE);
return AUDIOPLAYER_ERROR_NONE;
}
}
return AUDIOPLAYER_ERROR_IO;
}
/**
* @brief Toggle LED3 and LED4 thread
* @param thread not used
* @retval None
*/
static void LED_Thread1(void const *argument)
{
uint32_t count = 0;
(void) argument;
for (;;)
{
count = osKernelSysTick() + 5000;
/* Toggle LED3 every 200 ms for 5 s */
while (count >= osKernelSysTick())
{
BSP_LED_Toggle(LED3);
osDelay(200);
}
/* Turn off LED3 */
BSP_LED_Off(LED3);
/* Suspend Thread 1 */
osThreadSuspend(NULL);
count = osKernelSysTick() + 5000;
/* Toggle LED3 every 400 ms for 5 s */
while (count >= osKernelSysTick())
{
BSP_LED_Toggle(LED3);
osDelay(400);
}
/* Resume Thread 2*/
osThreadResume(LEDThread2Handle);
}
}
/**
* @brief Mutex Low Priority Thread.
* @param argument: Not used
* @retval None
*/
static void MutexLowPriorityThread(void const *argument)
{
/* Just to remove compiler warning. */
(void) argument;
for(;;)
{
/* Keep attempting to obtain the mutex. We should only obtain it when
the medium-priority thread has suspended itself, which in turn should only
happen when the high-priority thread is also suspended. */
if(osMutexWait(osMutex, mutexNO_DELAY) == osOK)
{
/* Is the haigh and medium-priority threads suspended? */
if((osThreadGetState(osHighPriorityThreadHandle) != osThreadSuspended) || (osThreadGetState(osMediumPriorityThreadHandle) != osThreadSuspended))
{
/* Toggle LED 3 to indicate error */
BSP_LED_Toggle(LED3);
}
else
{
/* Keep count of the number of cycles this task has performed
so a stall can be detected. */
LowPriorityThreadCycles++;
BSP_LED_Toggle(LED4);
/* We can resume the other tasks here even though they have a
higher priority than the this thread. When they execute they
will attempt to obtain the mutex but fail because the low-priority
thread is still the mutex holder. this thread will then inherit
the higher priority. The medium-priority thread will block indefinitely
when it attempts to obtain the mutex, the high-priority thread will only
block for a fixed period and an error will be latched if the
high-priority thread has not returned the mutex by the time this
fixed period has expired. */
osThreadResume(osMediumPriorityThreadHandle);
osThreadResume(osHighPriorityThreadHandle);
/* The other two tasks should now have executed and no longer
be suspended. */
if((osThreadGetState(osHighPriorityThreadHandle) == osThreadSuspended) || (osThreadGetState(osMediumPriorityThreadHandle) == osThreadSuspended))
{
/* Toggle LED 3 to indicate error */
BSP_LED_Toggle(LED3);
}
/* Release the mutex, disinheriting the higher priority again. */
if(osMutexRelease(osMutex) != osOK)
{
/* Toggle LED 3 to indicate error */
BSP_LED_Toggle(LED3);
}
}
}
#if configUSE_PREEMPTION == 0
{
taskYIELD();
}
#endif
}
}