X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/f10126a95e528a04b4ec6be1d0fc30be4fbb7e98..0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6:/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.c diff --git a/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.c b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.c index 0262f597f..b4a7a3b2b 100644 --- a/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.c +++ b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.c @@ -1,249 +1,249 @@ -/* - 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" - -/** LUFA Audio Class driver interface configuration and state information. This structure is - * passed to all Audio Class driver functions, so that multiple instances of the same class - * within a device can be differentiated from one another. - */ -USB_ClassInfo_Audio_Host_t Speaker_Audio_Interface = - { - .Config = - { - .DataOUTPipeNumber = 1, - }, - }; - - -/** 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(); - } -} - -/** ISR to handle the reloading of the PWM timer with the next sample. */ -ISR(TIMER0_COMPA_vect, ISR_BLOCK) -{ - uint8_t PrevPipe = Pipe_GetCurrentPipe(); - - /* Check that the USB bus is ready for the next sample to write */ - if (Audio_Host_IsReadyForNextSample(&Speaker_Audio_Interface)) - { - 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 - - Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample); - Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample); - } - - Pipe_SelectPipe(PrevPipe); -} - -/** 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); - LEDs_Init(); - Buttons_Init(); - ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32); - ADC_SetupChannel(MIC_IN_ADC_CHANNEL); - 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("Device Attached.\r\n")); - 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("\r\nDevice Unattached.\r\n")); - 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); -} - +/* + 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" + +/** LUFA Audio Class driver interface configuration and state information. This structure is + * passed to all Audio Class driver functions, so that multiple instances of the same class + * within a device can be differentiated from one another. + */ +USB_ClassInfo_Audio_Host_t Speaker_Audio_Interface = + { + .Config = + { + .DataOUTPipeNumber = 1, + }, + }; + + +/** 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(); + } +} + +/** ISR to handle the reloading of the PWM timer with the next sample. */ +ISR(TIMER0_COMPA_vect, ISR_BLOCK) +{ + uint8_t PrevPipe = Pipe_GetCurrentPipe(); + + /* Check that the USB bus is ready for the next sample to write */ + if (Audio_Host_IsReadyForNextSample(&Speaker_Audio_Interface)) + { + 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 + + Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample); + Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample); + } + + Pipe_SelectPipe(PrevPipe); +} + +/** 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); + LEDs_Init(); + Buttons_Init(); + ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32); + ADC_SetupChannel(MIC_IN_ADC_CHANNEL); + 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("Device Attached.\r\n")); + 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("\r\nDevice Unattached.\r\n")); + 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); +} +