summaryrefslogtreecommitdiffstats
path: root/lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c')
-rw-r--r--lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c250
1 files changed, 0 insertions, 250 deletions
diff --git a/lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c b/lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c
deleted file mode 100644
index 2e56d7f356..0000000000
--- a/lib/lufa/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2017.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaims all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Main source file for the AudioOutputHost demo. This file contains the main tasks of
- * the demo and is responsible for the initial application hardware configuration.
- */
-
-#include "AudioOutputHost.h"
-
-/** 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);
- GlobalInterruptEnable();
-
- for (;;)
- {
- USB_USBTask();
- }
-}
-
-/** Configures the board hardware and chip peripherals for the demo's functionality. */
-void SetupHardware(void)
-{
-#if (ARCH == ARCH_AVR8)
- /* Disable watchdog if enabled by bootloader/fuses */
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- /* Disable clock division */
- clock_prescale_set(clock_div_1);
-#endif
-
- /* Hardware Initialization */
- Serial_Init(9600, false);
- Buttons_Init();
- ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32);
- ADC_SetupChannel(MIC_IN_ADC_CHANNEL);
- LEDs_Init();
- USB_Init();
-
- /* Create a stdio stream for the serial port for stdin and stdout */
- Serial_CreateStream(NULL);
-
- /* Start the ADC conversion in free running mode */
- ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | ADC_GET_CHANNEL_MASK(MIC_IN_ADC_CHANNEL));
-}
-
-/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
- * starts the library USB task to begin the enumeration and USB management process.
- */
-void EVENT_USB_Host_DeviceAttached(void)
-{
- puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-}
-
-/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
- * stops the library USB task management process.
- */
-void EVENT_USB_Host_DeviceUnattached(void)
-{
- puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE));
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-}
-
-/** 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)
-{
- puts_P(PSTR("Getting Config Data.\r\n"));
-
- uint8_t ErrorCode;
-
- /* Get and process the configuration descriptor data */
- if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
- {
- if (ErrorCode == ControlError)
- puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
- else
- puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
-
- printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- return;
- }
-
- /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
- if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
- {
- printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
- " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- return;
- }
-
- if ((ErrorCode = USB_Host_SetInterfaceAltSetting(StreamingInterfaceIndex,
- StreamingInterfaceAltSetting)) != HOST_SENDCONTROL_Successful)
- {
- printf_P(PSTR(ESC_FG_RED "Could not set alternative streaming interface setting.\r\n"
- " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- USB_ControlRequest = (USB_Request_Header_t)
- {
- .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT),
- .bRequest = AUDIO_REQ_SetCurrent,
- .wValue = (AUDIO_EPCONTROL_SamplingFreq << 8),
- .wIndex = StreamingEndpointAddress,
- .wLength = sizeof(USB_Audio_SampleFreq_t),
- };
-
- USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
-
- /* Select the control pipe for the request transfer */
- Pipe_SelectPipe(PIPE_CONTROLPIPE);
-
- /* Set the sample rate on the streaming interface endpoint */
- if ((ErrorCode = USB_Host_SendControlRequest(&SampleRate)) != HOST_SENDCONTROL_Successful)
- {
- printf_P(PSTR(ESC_FG_RED "Could not set requested Audio sample rate.\r\n"
- " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- 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("Speaker Enumerated.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_READY);
-}
-
-/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
-void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
-{
- USB_Disable();
-
- printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
- " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- for(;;);
-}
-
-/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
- * enumerating an attached USB device.
- */
-void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
- const uint8_t SubErrorCode)
-{
- printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
- " -- Error Code %d\r\n"
- " -- Sub Error Code %d\r\n"
- " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-}
-
-/** ISR to handle the reloading of the endpoint with the next sample. */
-ISR(TIMER0_COMPA_vect, ISR_BLOCK)
-{
- uint8_t PrevPipe = Pipe_GetCurrentPipe();
-
- Pipe_SelectPipe(AUDIO_DATA_OUT_PIPE);
- Pipe_Unfreeze();
-
- /* Check if the current pipe can be written to (device ready for more data) */
- if (Pipe_IsOUTReady())
- {
- int16_t AudioSample;
-
- #if defined(USE_TEST_TONE)
- static uint8_t SquareWaveSampleCount;
- static int16_t CurrentWaveValue;
-
- /* In test tone mode, generate a square wave at 1/256 of the sample rate */
- if (SquareWaveSampleCount++ == 0xFF)
- CurrentWaveValue ^= 0x8000;
-
- /* Only generate audio if the board button is being pressed */
- AudioSample = (Buttons_GetStatus() & BUTTONS_BUTTON1) ? CurrentWaveValue : 0;
- #else
- /* Audio sample is ADC value scaled to fit the entire range */
- AudioSample = ((SAMPLE_MAX_RANGE / ADC_MAX_RANGE) * ADC_GetResult());
-
- #if defined(MICROPHONE_BIASED_TO_HALF_RAIL)
- /* Microphone is biased to half rail voltage, subtract the bias from the sample value */
- AudioSample -= (SAMPLE_MAX_RANGE / 2);
- #endif
- #endif
-
- Pipe_Write_16_LE(AudioSample);
- Pipe_Write_16_LE(AudioSample);
-
- if (!(Pipe_IsReadWriteAllowed()))
- Pipe_ClearOUT();
- }
-
- Pipe_Freeze();
- Pipe_SelectPipe(PrevPipe);
-}
-