From 0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Thu, 16 Jun 2011 12:18:46 +0000 Subject: Add missing SVN eol-style properties to source files to prevent mixed end-of-line characters. --- .../LowLevel/AudioOutputHost/AudioOutputHost.c | 540 ++++++++++----------- 1 file changed, 270 insertions(+), 270 deletions(-) (limited to 'Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c') diff --git a/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c b/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c index 1fb64a1a4..3f0b4a326 100644 --- a/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c +++ b/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.c @@ -1,270 +1,270 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2011. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2011 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 disclaim 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); - sei(); - - for (;;) - { - Audio_Task(); - USB_USBTask(); - } -} - -/** Configures the board hardware and chip peripherals for the demo's functionality. */ -void SetupHardware(void) -{ - /* Disable watchdog if enabled by bootloader/fuses */ - MCUSR &= ~(1 << WDRF); - wdt_disable(); - - /* Disable clock division */ - clock_prescale_set(clock_div_1); - - /* 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); -} - -/** 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) -{ - 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); -} - -void Audio_Task(void) -{ - uint8_t ErrorCode; - - switch (USB_HostState) - { - case HOST_STATE_Addressed: - puts_P(PSTR("Getting Config Data.\r\n")); - - /* 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); - - /* Indicate error status */ - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - - /* Wait until USB device disconnected */ - USB_HostState = HOST_STATE_WaitForDeviceRemoval; - break; - } - - /* 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); - - /* Indicate error status */ - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - - /* Wait until USB device disconnected */ - USB_HostState = HOST_STATE_WaitForDeviceRemoval; - break; - } - - 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); - - /* Indicate error status */ - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - - /* Wait until USB device disconnected */ - USB_HostState = HOST_STATE_WaitForDeviceRemoval; - break; - } - - 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) - { - /* Indicate error status */ - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - - /* Wait until USB device disconnected */ - 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("Speaker Enumerated.\r\n")); - - USB_HostState = HOST_STATE_Configured; - break; - case HOST_STATE_Configured: - /* Do nothing - audio stream is handled by the timer interrupt routine */ - break; - } -} - -/** 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); -} +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 disclaim 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); + sei(); + + for (;;) + { + Audio_Task(); + USB_USBTask(); + } +} + +/** Configures the board hardware and chip peripherals for the demo's functionality. */ +void SetupHardware(void) +{ + /* Disable watchdog if enabled by bootloader/fuses */ + MCUSR &= ~(1 << WDRF); + wdt_disable(); + + /* Disable clock division */ + clock_prescale_set(clock_div_1); + + /* 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); +} + +/** 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) +{ + 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); +} + +void Audio_Task(void) +{ + uint8_t ErrorCode; + + switch (USB_HostState) + { + case HOST_STATE_Addressed: + puts_P(PSTR("Getting Config Data.\r\n")); + + /* 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); + + /* Indicate error status */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + /* 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); + + /* Indicate error status */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + 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); + + /* Indicate error status */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + 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) + { + /* Indicate error status */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + 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("Speaker Enumerated.\r\n")); + + USB_HostState = HOST_STATE_Configured; + break; + case HOST_STATE_Configured: + /* Do nothing - audio stream is handled by the timer interrupt routine */ + break; + } +} + +/** 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); +} -- cgit v1.2.3