/*
* Copyright (c) 2004, Intel Corporation.
* Copyright (c) 2006, Keir Fraser, XenSource Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
#include "acpi2_0.h"
#include "../config.h"
/*
* Firmware ACPI Control Structure (FACS).
*/
struct acpi_20_facs Facs = {
.signature = ACPI_2_0_FACS_SIGNATURE,
.length = sizeof(struct acpi_20_facs),
.version = ACPI_2_0_FACS_VERSION
};
/*
* Fixed ACPI Description Table (FADT).
*/
#define ACPI_PM1A_EVT_BLK_BIT_WIDTH 0x20
#define ACPI_PM1A_EVT_BLK_BIT_OFFSET 0x00
#define ACPI_PM1A_CNT_BLK_BIT_WIDTH 0x10
#define ACPI_PM1A_CNT_BLK_BIT_OFFSET 0x00
#define ACPI_PM_TMR_BLK_BIT_WIDTH 0x20
#define ACPI_PM_TMR_BLK_BIT_OFFSET 0x00
struct acpi_20_fadt Fadt = {
.header = {
.signature = ACPI_2_0_FADT_SIGNATURE,
.length = sizeof(struct acpi_20_fadt),
.revision = ACPI_2_0_FADT_REVISION,
.oem_id = ACPI_OEM_ID,
.oem_table_id = ACPI_OEM_TABLE_ID,
.oem_revision = ACPI_OEM_REVISION,
.creator_id = ACPI_CREATOR_ID,
.creator_revision = ACPI_CREATOR_REVISION
},
.sci_int = 9,
.pm1a_evt_blk = ACPI_PM1A_EVT_BLK_ADDRESS_V1,
.pm1a_cnt_blk = ACPI_PM1A_CNT_BLK_ADDRESS_V1,
.pm_tmr_blk = ACPI_PM_TMR_BLK_ADDRESS_V1,
.gpe0_blk = ACPI_GPE0_BLK_ADDRESS_V1,
.pm1_evt_len = ACPI_PM1A_EVT_BLK_BIT_WIDTH / 8,
.pm1_cnt_len = ACPI_PM1A_CNT_BLK_BIT_WIDTH / 8,
.pm_tmr_len = ACPI_PM_TMR_BLK_BIT_WIDTH / 8,
.gpe0_blk_len = ACPI_GPE0_BLK_LEN_V1,
.p_lvl2_lat = 0x0fff, /* >100, means we do not support C2 state */
.p_lvl3_lat = 0x0fff, /* >1000, means we do not support C3 state */
.iapc_boot_arch = ACPI_8042,
.flags = (ACPI_PROC_C1 |
ACPI_WBINVD |
ACPI_FIX_RTC | ACPI_TMR_VAL_EXT |
ACPI_USE_PLATFORM_CLOCK),
.reset_reg = {
.address_space_id = ACPI_SYSTEM_IO,
.register_bit_width = 8, /* *must* be 8 */
.register_bit_offset = 0, /* *must* be 0 */
.address = 0xcf9
},
.reset_value = 6,
.x_pm1a_evt_blk = {
.address_space_id = ACPI_SYSTEM_IO,
.register_bit_width = ACPI_PM1A_EVT_BLK_BIT_WIDTH,
.register_bit_offset = ACPI_PM1A_EVT_BLK_BIT_OFFSET,
.address = ACPI_PM1A_EVT_BLK_ADDRESS_V1,
},
.x_pm1a_cnt_blk = {
.address_space_id = ACPI_SYSTEM_IO,
.register_bit_width = ACPI_PM1A_CNT_BLK_BIT_WIDTH,
.register_bit_offset = ACPI_PM1A_CNT_BLK_BIT_OFFSET,
.address = ACPI_PM1A_CNT_BLK_ADDRESS_V1,
},
.x_pm_tmr_blk = {
.address_space_id = ACPI_SYSTEM_IO,
.register_bit_width = ACPI_PM_TMR_BLK_BIT_WIDTH,
.register_bit_offset = ACPI_PM_TMR_BLK_BIT_OFFSET,
.address = ACPI_PM_TMR_BLK_ADDRESS_V1,
}
};
struct acpi_20_rsdt Rsdt = {
.header = {
.signature = ACPI_2_0_RSDT_SIGNATURE,
.length = sizeof(struct acpi_header),
.revision = ACPI_2_0_RSDT_REVISION,
.oem_id = ACPI_OEM_ID,
.oem_table_id = ACPI_OEM_TABLE_ID,
.oem_revision = ACPI_OEM_REVISION,
.creator_id = ACPI_CREATOR_ID,
.creator_revision = ACPI_CREATOR_REVISION
}
};
struct acpi_20_xsdt Xsdt = {
.header = {
.signature = ACPI_2_0_XSDT_SIGNATURE,
.length = sizeof(struct acpi_header),
.revision = ACPI_2_0_XSDT_REVISION,
.oem_id = ACPI_OEM_ID,
.oem_table_id = ACPI_OEM_TABLE_ID,
.oem_revision = ACPI_OEM_REVISION,
.creator_id = ACPI_CREATOR_ID,
.creator_revision = ACPI_CREATOR_REVISION
}
};
struct acpi_20_rsdp Rsdp = {
.signature = ACPI_2_0_RSDP_SIGNATURE,
.oem_id = ACPI_OEM_ID,
.revision = ACPI_2_0_RSDP_REVISION,
.length = sizeof(struct acpi_20_rsdp)
};
#define ACPI_WAET_RTC_GOOD 0x00000001
#define ACPI_WAET_PM_TIMER_GOOD 0x00000002
#define ACPI_WAET_FLAGS (ACPI_WAET_RTC_GOOD | \
ACPI_WAET_PM_TIMER_GOOD)
struct acpi_20_waet Waet = {
.header = {
.signature = ACPI_2_0_WAET_SIGNATURE,
.length = sizeof(struct acpi_20_waet),
.revision = ACPI_2_0_WAET_REVISION,
.oem_id = ACPI_OEM_ID,
.oem_table_id = ACPI_OEM_TABLE_ID,
.oem_revision = ACPI_OEM_REVISION,
.creator_id = ACPI_CREATOR_ID,
.creator_revision = ACPI_CREATOR_REVISION
},
.flags = ACPI_WAET_FLAGS
};
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
/a>
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/*
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 AudioOutput demo. This file contains the main tasks of
* the demo and is responsible for the initial application hardware configuration.
*/
#include "AudioOutput.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_Device_t Speaker_Audio_Interface =
{
.Config =
{
.ControlInterfaceNumber = INTERFACE_ID_AudioControl,
.StreamingInterfaceNumber = INTERFACE_ID_AudioStream,
.DataOUTEndpoint =
{
.Address = AUDIO_STREAM_EPADDR,
.Size = AUDIO_STREAM_EPSIZE,
.Banks = 2,
},
},
};
/** Current audio sampling frequency of the streaming audio endpoint. */
static uint32_t CurrentAudioSampleFrequency = 48000;
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
for (;;)
{
Audio_Device_USBTask(&Speaker_Audio_Interface);
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 */
LEDs_Init();
USB_Init();
}
/** ISR to handle the reloading of the PWM timer with the next sample. */
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
{
uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint();
/* Check that the USB bus is ready for the next sample to read */
if (Audio_Device_IsSampleReceived(&Speaker_Audio_Interface))
{
/* Retrieve the signed 16-bit left and right audio samples, convert to 8-bit */
int8_t LeftSample_8Bit = (Audio_Device_ReadSample16(&Speaker_Audio_Interface) >> 8);
int8_t RightSample_8Bit = (Audio_Device_ReadSample16(&Speaker_Audio_Interface) >> 8);
/* Mix the two channels together to produce a mono, 8-bit sample */
int8_t MixedSample_8Bit = (((int16_t)LeftSample_8Bit + (int16_t)RightSample_8Bit) >> 1);
#if defined(AUDIO_OUT_MONO)
/* Load the sample into the PWM timer channel */
OCR3A = (MixedSample_8Bit ^ (1 << 7));
#elif defined(AUDIO_OUT_STEREO)
/* Load the dual 8-bit samples into the PWM timer channels */
OCR3A = (LeftSample_8Bit ^ (1 << 7));
OCR3B = (RightSample_8Bit ^ (1 << 7));
#elif defined(AUDIO_OUT_PORTC)
/* Load the 8-bit mixed sample into PORTC */
PORTC = MixedSample_8Bit;
#endif
uint8_t LEDMask = LEDS_NO_LEDS;
/* Turn on LEDs as the sample amplitude increases */
if (MixedSample_8Bit > 16)
LEDMask = (LEDS_LED1 | LEDS_LED2 | LEDS_LED3 | LEDS_LED4);
else if (MixedSample_8Bit > 8)
LEDMask = (LEDS_LED1 | LEDS_LED2 | LEDS_LED3);
else if (MixedSample_8Bit > 4)
LEDMask = (LEDS_LED1 | LEDS_LED2);
else if (MixedSample_8Bit > 2)
LEDMask = (LEDS_LED1);
LEDs_SetAllLEDs(LEDMask);
}
Endpoint_SelectEndpoint(PrevEndpoint);
}
/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
/* Sample reload timer initialization */
TIMSK0 = (1 << OCIE0A);
OCR0A = ((F_CPU / 8 / CurrentAudioSampleFrequency) - 1);
TCCR0A = (1 << WGM01); // CTC mode
TCCR0B = (1 << CS01); // Fcpu/8 speed
#if defined(AUDIO_OUT_MONO)
/* Set speaker as output */
DDRC |= (1 << 6);
#elif defined(AUDIO_OUT_STEREO)
/* Set speakers as outputs */
DDRC |= ((1 << 6) | (1 << 5));
#elif defined(AUDIO_OUT_PORTC)
/* Set PORTC as outputs */
DDRC |= 0xFF;
#endif
#if (defined(AUDIO_OUT_MONO) || defined(AUDIO_OUT_STEREO))
/* PWM speaker timer initialization */
TCCR3A = ((1 << WGM30) | (1 << COM3A1) | (1 << COM3A0)
| (1 << COM3B1) | (1 << COM3B0)); // Set on match, clear on TOP
TCCR3B = ((1 << WGM32) | (1 << CS30)); // Fast 8-Bit PWM, F_CPU speed
#endif
}
/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
/* Stop the sample reload timer */
TCCR0B = 0;
#if (defined(AUDIO_OUT_MONO) || defined(AUDIO_OUT_STEREO))
/* Stop the PWM generation timer */
TCCR3B = 0;
#endif
#if defined(AUDIO_OUT_MONO)
/* Set speaker as input to reduce current draw */
DDRC &= ~(1 << 6);
#elif defined(AUDIO_OUT_STEREO)
/* Set speakers as inputs to reduce current draw */
DDRC &= ~((1 << 6) | (1 << 5));
#elif defined(AUDIO_OUT_PORTC)
/* Set PORTC low */
PORTC = 0x00;
#endif
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
bool ConfigSuccess = true;
ConfigSuccess &= Audio_Device_ConfigureEndpoints(&Speaker_Audio_Interface);
LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}
/** Event handler for the library USB Control Request reception event. */
void EVENT_USB_Device_ControlRequest(void)
{
Audio_Device_ProcessControlRequest(&Speaker_Audio_Interface);
}
/** Audio class driver callback for the setting and retrieval of streaming endpoint properties. This callback must be implemented
* in the user application to handle property manipulations on streaming audio endpoints.
*
* When the DataLength parameter is NULL, this callback should only indicate whether the specified operation is valid for
* the given endpoint index, and should return as fast as possible. When non-NULL, this value may be altered for GET operations
* to indicate the size of the retrieved data.
*
* \note The length of the retrieved data stored into the Data buffer on GET operations should not exceed the initial value
* of the \c DataLength parameter.
*
* \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
* \param[in] EndpointProperty Property of the endpoint to get or set, a value from Audio_ClassRequests_t.
* \param[in] EndpointAddress Address of the streaming endpoint whose property is being referenced.
* \param[in] EndpointControl Parameter of the endpoint to get or set, a value from Audio_EndpointControls_t.
* \param[in,out] DataLength For SET operations, the length of the parameter data to set. For GET operations, the maximum
* length of the retrieved data. When NULL, the function should return whether the given property
* and parameter is valid for the requested endpoint without reading or modifying the Data buffer.
* \param[in,out] Data Pointer to a location where the parameter data is stored for SET operations, or where
* the retrieved data is to be stored for GET operations.
*
* \return Boolean \c true if the property get/set was successful, \c false otherwise
*/
bool CALLBACK_Audio_Device_GetSetEndpointProperty(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const uint8_t EndpointProperty,
const uint8_t EndpointAddress,
const uint8_t EndpointControl,
uint16_t* const DataLength,
uint8_t* Data)
{
/* Check the requested endpoint to see if a supported endpoint is being manipulated */
if (EndpointAddress == Speaker_Audio_Interface.Config.DataOUTEndpoint.Address)
{
/* Check the requested control to see if a supported control is being manipulated */
if (EndpointControl == AUDIO_EPCONTROL_SamplingFreq)
{
switch (EndpointProperty)
{
case AUDIO_REQ_SetCurrent:
/* Check if we are just testing for a valid property, or actually adjusting it */
if (DataLength != NULL)
{
/* Set the new sampling frequency to the value given by the host */
CurrentAudioSampleFrequency = (((uint32_t)Data[2] << 16) | ((uint32_t)Data[1] << 8) | (uint32_t)Data[0]);
/* Adjust sample reload timer to the new frequency */
OCR0A = ((F_CPU / 8 / CurrentAudioSampleFrequency) - 1);
}
return true;
case AUDIO_REQ_GetCurrent:
/* Check if we are just testing for a valid property, or actually reading it */
if (DataLength != NULL)
{
*DataLength = 3;
Data[2] = (CurrentAudioSampleFrequency >> 16);
Data[1] = (CurrentAudioSampleFrequency >> 8);
Data[0] = (CurrentAudioSampleFrequency & 0xFF);
}
return true;
}
}
}
return false;
}
/** Audio class driver callback for the setting and retrieval of streaming interface properties. This callback must be implemented
* in the user application to handle property manipulations on streaming audio interfaces.
*
* When the DataLength parameter is NULL, this callback should only indicate whether the specified operation is valid for
* the given entity and should return as fast as possible. When non-NULL, this value may be altered for GET operations
* to indicate the size of the retrieved data.
*
* \note The length of the retrieved data stored into the Data buffer on GET operations should not exceed the initial value
* of the \c DataLength parameter.
*
* \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
* \param[in] Property Property of the interface to get or set, a value from Audio_ClassRequests_t.
* \param[in] EntityAddress Address of the audio entity whose property is being referenced.
* \param[in] Parameter Parameter of the entity to get or set, specific to each type of entity (see USB Audio specification).
* \param[in,out] DataLength For SET operations, the length of the parameter data to set. For GET operations, the maximum
* length of the retrieved data. When NULL, the function should return whether the given property
* and parameter is valid for the requested endpoint without reading or modifying the Data buffer.
* \param[in,out] Data Pointer to a location where the parameter data is stored for SET operations, or where
* the retrieved data is to be stored for GET operations.
*
* \return Boolean \c true if the property GET/SET was successful, \c false otherwise
*/
bool CALLBACK_Audio_Device_GetSetInterfaceProperty(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const uint8_t Property,
const uint8_t EntityAddress,
const uint16_t Parameter,
uint16_t* const DataLength,
uint8_t* Data)
{
/* No audio interface entities in the device descriptor, thus no properties to get or set. */
return false;
}
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