C++ (Cpp) Audio_Host_GetSetEndpointProperty Beispiele

Beispiel #1

Datei: AudioOutputHost.c Projekt: Armadill0/CANBus-Triple_Genesis-Connect

/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 *  enumerated by the host and is now ready to be used by the application.
 */
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);

	uint16_t ConfigDescriptorSize;
	uint8_t  ConfigDescriptorData[512];

	if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
	                                       sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
	{
		puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		return;
	}

	if (Audio_Host_ConfigurePipes(&Speaker_Audio_Interface,
	                              ConfigDescriptorSize, ConfigDescriptorData) != AUDIO_ENUMERROR_NoError)
	{
		puts_P(PSTR("Attached Device Not a Valid Audio Output Device.\r\n"));
		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		return;
	}

	if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
	{
		puts_P(PSTR("Error Setting Device Configuration.\r\n"));
		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		return;
	}

	if (Audio_Host_StartStopStreaming(&Speaker_Audio_Interface, true) != HOST_SENDCONTROL_Successful)
	{
		puts_P(PSTR("Error Enabling Audio Stream.\r\n"));
		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		USB_Host_SetDeviceConfiguration(0);
		return;
	}
	
	USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
	if (Audio_Host_GetSetEndpointProperty(&Speaker_Audio_Interface, Speaker_Audio_Interface.Config.DataOUTPipeNumber,
	                                      AUDIO_REQ_SetCurrent, AUDIO_EPCONTROL_SamplingFreq,
	                                      sizeof(SampleRate), &SampleRate) != HOST_SENDCONTROL_Successful)
	{
		puts_P(PSTR("Error Setting Audio Sampling Frequency.\r\n"));
		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		USB_Host_SetDeviceConfiguration(0);
		return;
	}

	/* Sample reload timer initialization */
	TIMSK0  = (1 << OCIE0A);
	OCR0A   = ((F_CPU / 8 / 48000) - 1);
	TCCR0A  = (1 << WGM01);  // CTC mode
	TCCR0B  = (1 << CS01);   // Fcpu/8 speed

	puts_P(PSTR("Audio Device Enumerated.\r\n"));
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
}

Beispiel #2

Datei: AudioOutputHost.c Projekt: abbaad/Sun5c

/** Main program entry point. This routine configures the hardware required by the application, then
 *  enters a loop to run the application tasks in sequence.
 */
int main(void)
{
	SetupHardware();

	puts_P(PSTR(ESC_FG_CYAN "Audio Output Host Demo running.\r\n" ESC_FG_WHITE));

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	sei();

	for (;;)
	{
		switch (USB_HostState)
		{
			case HOST_STATE_Addressed:
				LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);

				uint16_t ConfigDescriptorSize;
				uint8_t  ConfigDescriptorData[512];

				if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
				                                       sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
				{
					puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}

				if (Audio_Host_ConfigurePipes(&Speaker_Audio_Interface,
				                              ConfigDescriptorSize, ConfigDescriptorData) != AUDIO_ENUMERROR_NoError)
				{
					puts_P(PSTR("Attached Device Not a Valid Audio Output Device.\r\n"));
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}

				if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
				{
					puts_P(PSTR("Error Setting Device Configuration.\r\n"));
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}

				if (Audio_Host_StartStopStreaming(&Speaker_Audio_Interface, true) != HOST_SENDCONTROL_Successful)
				{
					puts_P(PSTR("Error Enabling Audio Stream.\r\n"));
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}
				
				USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
				if (Audio_Host_GetSetEndpointProperty(&Speaker_Audio_Interface, Speaker_Audio_Interface.Config.DataOUTPipeNumber,
				                                      AUDIO_REQ_SetCurrent, AUDIO_EPCONTROL_SamplingFreq,
				                                      sizeof(SampleRate), &SampleRate) != HOST_SENDCONTROL_Successful)
				{
					puts_P(PSTR("Error Setting Audio Sampling Frequency.\r\n"));
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;				
				}

				/* Sample reload timer initialization */
				TIMSK0  = (1 << OCIE0A);
				OCR0A   = ((F_CPU / 8 / 48000) - 1);
				TCCR0A  = (1 << WGM01);  // CTC mode
				TCCR0B  = (1 << CS01);   // Fcpu/8 speed

				puts_P(PSTR("Audio Device Enumerated.\r\n"));
				LEDs_SetAllLEDs(LEDMASK_USB_READY);
				USB_HostState = HOST_STATE_Configured;
				break;
			case HOST_STATE_Configured:
				/* Do nothing - audio stream is handled by the timer interrupt routine */
				break;
		}

		Audio_Host_USBTask(&Speaker_Audio_Interface);
		USB_USBTask();
	}
}