Commit ea922c98 authored by Dean Camera's avatar Dean Camera
Browse files

Added new incomplete AudioInputHost Host LowLevel demo.

Added missing Audio class control request definitions.

Added support for the Audio class GET STATUS request so that it is correctly ACKed when sent by the host.
parent cc9b1909
......@@ -143,6 +143,15 @@ void EVENT_USB_Device_ControlRequest(void)
}
break;
case AUDIO_REQ_GetStatus:
/* Get Status request can be directed at either the interface or endpoint, neither is currently used
* according to the latest USB Audio 1.0 standard, but must be ACKed with no data when requested */
if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
(USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
}
}
}
......
......@@ -169,6 +169,15 @@ void EVENT_USB_Device_ControlRequest(void)
}
break;
case AUDIO_REQ_GetStatus:
/* Get Status request can be directed at either the interface or endpoint, neither is currently used
* according to the latest USB Audio 1.0 standard, but must be ACKed with no data when requested */
if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
(USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
}
}
}
......
/*
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 AudioInputHost demo. This file contains the main tasks of
* the demo and is responsible for the initial application hardware configuration.
*/
#include "AudioInputHost.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 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);
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 = 0x0100,
.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 / 8000) - 1);
TCCR0A = (1 << WGM01); // CTC mode
TCCR0B = (1 << CS01); // Fcpu/8 speed
/* Set speaker as output */
DDRC |= (1 << 6);
/* 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
puts_P(PSTR("Microphone Enumerated.\r\n"));
USB_HostState = HOST_STATE_Configured;
break;
case HOST_STATE_Configured:
break;
}
}
/** ISR to handle the reloading of the PWM timer with the next sample. */
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
{
uint8_t PrevPipe = Pipe_GetCurrentPipe();
Pipe_SelectPipe(AUDIO_DATA_IN_PIPE);
Pipe_Unfreeze();
/* Check if the current pipe can be read from (contains a packet) and the device is sending data */
if (Pipe_IsINReceived())
{
/* Retrieve the signed 16-bit audio sample, convert to 8-bit */
int8_t Sample_8Bit = (Pipe_Read_16_LE() >> 8);
/* Check to see if the bank is now empty */
if (!(Pipe_IsReadWriteAllowed()))
{
/* Acknowledge the packet, clear the bank ready for the next packet */
Pipe_ClearIN();
}
/* Load the sample into the PWM timer channel */
OCR3A = (Sample_8Bit ^ (1 << 7));
uint8_t LEDMask = LEDS_NO_LEDS;
/* Turn on LEDs as the sample amplitude increases */
if (Sample_8Bit > 16)
LEDMask = (LEDS_LED1 | LEDS_LED2 | LEDS_LED3 | LEDS_LED4);
else if (Sample_8Bit > 8)
LEDMask = (LEDS_LED1 | LEDS_LED2 | LEDS_LED3);
else if (Sample_8Bit > 4)
LEDMask = (LEDS_LED1 | LEDS_LED2);
else if (Sample_8Bit > 2)
LEDMask = (LEDS_LED1);
LEDs_SetAllLEDs(LEDMask);
}
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
*
* Header file for AudioHost.c.
*/
#ifndef _AUDIO_HOST_H_
#define _AUDIO_HOST_H_
/* Includes: */
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/pgmspace.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <stdio.h>
#include <LUFA/Version.h>
#include <LUFA/Drivers/Misc/TerminalCodes.h>
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/Serial.h>
#include <LUFA/Drivers/Board/LEDs.h>
#include "ConfigDescriptor.h"
/* Macros: */
/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
#define LEDMASK_USB_NOTREADY LEDS_LED1
/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
#define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)
/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
#define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)
/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
#define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
/* Function Prototypes: */
void Audio_Task(void);
void SetupHardware(void);
void EVENT_USB_Host_HostError(const uint8_t ErrorCode);
void EVENT_USB_Host_DeviceAttached(void);
void EVENT_USB_Host_DeviceUnattached(void);
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
const uint8_t SubErrorCode);
void EVENT_USB_Host_DeviceEnumerationComplete(void);
#endif
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