Commit dc83f73c authored by Dean Camera's avatar Dean Camera
Browse files

Added new GenericHID device demo application.

parent d83d87e1
/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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
*
* USB Device Descriptors, for library use when in USB device mode. Descriptors are special
* computer-readable structures which the host requests upon device enumeration, to determine
* the device's capabilities and functions.
*/
#include "Descriptors.h"
/** HID class report descriptor. This is a special descriptor constructed with values from the
* USBIF HID class specification to describe the reports and capabilities of the HID device. This
* descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
* the device will send, and what it may be sent back from the host. Refer to the HID specification for
* more details on HID report descriptors.
*/
USB_Descriptor_HIDReport_Datatype_t PROGMEM GenericReport[] =
{
0x06, 0x9c, 0xff, /* Usage Page (Vendor Defined) */
0x09, 0x01, /* Usage (Vendor Defined) */
0xa1, 0x01, /* Collection (Vendor Defined) */
0x09, 0x02, /* Usage (Vendor Defined) */
0x75, 0x08, /* Report Size (8) */
0x95, GENERIC_REPORT_SIZE, /* Report Count (GENERIC_REPORT_SIZE) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0xff, /* Logical Maximum (255) */
0x81, 0x02, /* Input (Data, Variable, Absolute) */
0x09, 0x03, /* Usage (Vendor Defined) */
0x75, 0x08, /* Report Size (8) */
0x95, GENERIC_REPORT_SIZE, /* Report Count (GENERIC_REPORT_SIZE) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0xff, /* Logical Maximum (255) */
0x91, 0x02, /* Output (Data, Variable, Absolute) */
0xc0 /* End Collection */
};
/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
* device characteristics, including the supported USB version, control endpoint size and the
* number of device configurations. The descriptor is read out by the USB host when the enumeration
* process begins.
*/
USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
{
Header: {Size: sizeof(USB_Descriptor_Device_t), Type: DTYPE_Device},
USBSpecification: VERSION_BCD(01.10),
Class: 0x00,
SubClass: 0x00,
Protocol: 0x00,
Endpoint0Size: 8,
VendorID: 0x03EB,
ProductID: 0x204F,
ReleaseNumber: 0x0000,
ManufacturerStrIndex: 0x01,
ProductStrIndex: 0x02,
SerialNumStrIndex: NO_DESCRIPTOR,
NumberOfConfigurations: 1
};
/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
* of the device in one of its supported configurations, including information about any device interfaces
* and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
* a configuration so that the host may correctly communicate with the USB device.
*/
USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
Config:
{
Header: {Size: sizeof(USB_Descriptor_Configuration_Header_t), Type: DTYPE_Configuration},
TotalConfigurationSize: sizeof(USB_Descriptor_Configuration_t),
TotalInterfaces: 1,
ConfigurationNumber: 1,
ConfigurationStrIndex: NO_DESCRIPTOR,
ConfigAttributes: (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),
MaxPowerConsumption: USB_CONFIG_POWER_MA(100)
},
Interface:
{
Header: {Size: sizeof(USB_Descriptor_Interface_t), Type: DTYPE_Interface},
InterfaceNumber: 0x00,
AlternateSetting: 0x00,
TotalEndpoints: 2,
Class: 0x03,
SubClass: 0x00,
Protocol: 0x00,
InterfaceStrIndex: NO_DESCRIPTOR
},
GenericHID:
{
Header: {Size: sizeof(USB_Descriptor_HID_t), Type: DTYPE_HID},
HIDSpec: VERSION_BCD(01.11),
CountryCode: 0x00,
TotalHIDReports: 0x01,
HIDReportType: DTYPE_Report,
HIDReportLength: sizeof(GenericReport)
},
GenericINEndpoint:
{
Header: {Size: sizeof(USB_Descriptor_Endpoint_t), Type: DTYPE_Endpoint},
EndpointAddress: (ENDPOINT_DESCRIPTOR_DIR_IN | GENERIC_IN_EPNUM),
Attributes: EP_TYPE_INTERRUPT,
EndpointSize: GENERIC_EPSIZE,
PollingIntervalMS: 0x02
},
GenericOUTEndpoint:
{
Header: {Size: sizeof(USB_Descriptor_Endpoint_t), Type: DTYPE_Endpoint},
EndpointAddress: (ENDPOINT_DESCRIPTOR_DIR_OUT | GENERIC_OUT_EPNUM),
Attributes: EP_TYPE_INTERRUPT,
EndpointSize: GENERIC_EPSIZE,
PollingIntervalMS: 0x02
}
};
/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
* via the language ID table available at USB.org what languages the device supports for its string descriptors.
*/
USB_Descriptor_String_t PROGMEM LanguageString =
{
Header: {Size: USB_STRING_LEN(1), Type: DTYPE_String},
UnicodeString: {LANGUAGE_ID_ENG}
};
/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
* form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
* Descriptor.
*/
USB_Descriptor_String_t PROGMEM ManufacturerString =
{
Header: {Size: USB_STRING_LEN(11), Type: DTYPE_String},
UnicodeString: L"Dean Camera"
};
/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
* Descriptor.
*/
USB_Descriptor_String_t PROGMEM ProductString =
{
Header: {Size: USB_STRING_LEN(13), Type: DTYPE_String},
UnicodeString: L"LUFA HID Demo"
};
/** This function is called by the library when in device mode, and must be overridden (see StdDescriptors.h
* documentation) by the application code so that the address and size of a requested descriptor can be given
* to the USB library. When the device recieves a Get Descriptor request on the control endpoint, this function
* is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
* USB host.
*/
uint16_t USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
{
const uint8_t DescriptorType = (wValue >> 8);
const uint8_t DescriptorNumber = (wValue & 0xFF);
void* Address = NULL;
uint16_t Size = NO_DESCRIPTOR;
switch (DescriptorType)
{
case DTYPE_Device:
Address = DESCRIPTOR_ADDRESS(DeviceDescriptor);
Size = sizeof(USB_Descriptor_Device_t);
break;
case DTYPE_Configuration:
Address = DESCRIPTOR_ADDRESS(ConfigurationDescriptor);
Size = sizeof(USB_Descriptor_Configuration_t);
break;
case DTYPE_String:
switch (DescriptorNumber)
{
case 0x00:
Address = DESCRIPTOR_ADDRESS(LanguageString);
Size = pgm_read_byte(&LanguageString.Header.Size);
break;
case 0x01:
Address = DESCRIPTOR_ADDRESS(ManufacturerString);
Size = pgm_read_byte(&ManufacturerString.Header.Size);
break;
case 0x02:
Address = DESCRIPTOR_ADDRESS(ProductString);
Size = pgm_read_byte(&ProductString.Header.Size);
break;
}
break;
case DTYPE_HID:
Address = DESCRIPTOR_ADDRESS(ConfigurationDescriptor.GenericHID);
Size = sizeof(USB_Descriptor_HID_t);
break;
case DTYPE_Report:
Address = DESCRIPTOR_ADDRESS(GenericReport);
Size = sizeof(GenericReport);
break;
}
*DescriptorAddress = Address;
return Size;
}
/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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 Descriptors.c.
*/
#ifndef _DESCRIPTORS_H_
#define _DESCRIPTORS_H_
/* Includes: */
#include <LUFA/Drivers/USB/USB.h>
#include <avr/pgmspace.h>
/* Type Defines: */
/** Type define for the HID class specific HID descriptor, to describe the HID device's specifications. Refer to the HID
* specification for details on the structure elements.
*/
typedef struct
{
USB_Descriptor_Header_t Header;
uint16_t HIDSpec;
uint8_t CountryCode;
uint8_t TotalHIDReports;
uint8_t HIDReportType;
uint16_t HIDReportLength;
} USB_Descriptor_HID_t;
/** Type define for the data type used to store HID report descriptor elements. */
typedef uint8_t USB_Descriptor_HIDReport_Datatype_t;
/** Type define for the device configuration descriptor structure. This must be defined in the
* application code, as the configuration descriptor contains several sub-descriptors which
* vary between devices, and which describe the device's usage to the host.
*/
typedef struct
{
USB_Descriptor_Configuration_Header_t Config;
USB_Descriptor_Interface_t Interface;
USB_Descriptor_HID_t GenericHID;
USB_Descriptor_Endpoint_t GenericINEndpoint;
USB_Descriptor_Endpoint_t GenericOUTEndpoint;
} USB_Descriptor_Configuration_t;
/* Macros: */
/** Endpoint number of the Generic HID reporting IN endpoint. */
#define GENERIC_IN_EPNUM 1
/** Endpoint number of the Generic HID reporting OUT endpoint. */
#define GENERIC_OUT_EPNUM 2
/** Size in bytes of the Generic HID reporting endpoint. */
#define GENERIC_EPSIZE 8
/** Size in bytes of the Generic HID reports (including report ID byte). */
#define GENERIC_REPORT_SIZE 8
/** Descriptor header type value, to indicate a HID class HID descriptor. */
#define DTYPE_HID 0x21
/** Descriptor header type value, to indicate a HID class HID report descriptor. */
#define DTYPE_Report 0x22
/* Function Prototypes: */
uint16_t USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
#endif
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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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 GenericHID demo. This file contains the main tasks of the demo and
* is responsible for the initial application hardware configuration.
*/
#include "GenericHID.h"
/* Project Tags, for reading out using the ButtLoad project */
BUTTLOADTAG(ProjName, "LUFA GenHID App");
BUTTLOADTAG(BuildTime, __TIME__);
BUTTLOADTAG(BuildDate, __DATE__);
BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);
/** Static buffer to hold the last received report from the host, so that it can be echoed back in the next sent report */
static uint8_t LastReceived[GENERIC_REPORT_SIZE];
/** Main program entry point. This routine configures the hardware required by the application, then
* starts the scheduler to run the USB management task.
*/
int main(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
/* Initialize USB Subsystem */
USB_Init();
/* >> APPLICATION INIT CODE HERE << */
for (;;);
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
* enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled
* asynchronously when they arrive rather than when the control endpoint is polled manually.
*/
EVENT_HANDLER(USB_Reset)
{
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
}
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
* starts the library USB task to begin the enumeration and USB management process.
*/
EVENT_HANDLER(USB_Connect)
{
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs and stops the USB management task.
*/
EVENT_HANDLER(USB_Disconnect)
{
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
}
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration
* of the USB device after enumeration, and configures the generic HID device endpoints.
*/
EVENT_HANDLER(USB_ConfigurationChanged)
{
/* Setup Generic IN Report Endpoint */
Endpoint_ConfigureEndpoint(GENERIC_IN_EPNUM, EP_TYPE_INTERRUPT,
ENDPOINT_DIR_IN, GENERIC_EPSIZE,
ENDPOINT_BANK_SINGLE);
/* Enable the endpoint IN interrupt ISR for the report endpoint */
USB_INT_Enable(ENDPOINT_INT_IN);
/* Setup Generic OUT Report Endpoint */
Endpoint_ConfigureEndpoint(GENERIC_OUT_EPNUM, EP_TYPE_INTERRUPT,
ENDPOINT_DIR_OUT, GENERIC_EPSIZE,
ENDPOINT_BANK_SINGLE);
/* Enable the endpoint OUT interrupt ISR for the report endpoint */
USB_INT_Enable(ENDPOINT_INT_OUT);
/* Indicate USB connected and ready */
UpdateStatus(Status_USBReady);
}
/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
* control requests that are not handled internally by the USB library (including the HID commands, which are
* all issued via the control endpoint), so that they can be handled appropriately for the application.
*/
EVENT_HANDLER(USB_UnhandledControlPacket)
{
/* Handle HID Class specific requests */
switch (bRequest)
{
case REQ_GetReport:
if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSetupReceived();
uint8_t GenericData[GENERIC_REPORT_SIZE];
CreateGenericHIDReport(GenericData);
/* Write the report data to the control endpoint */
Endpoint_Write_Control_Stream_LE(&GenericData, sizeof(GenericData));
/* Finalize the stream transfer to send the last packet or clear the host abort */
Endpoint_ClearSetupOUT();
}
break;
case REQ_SetReport:
if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSetupReceived();
/* Wait until the generic report has been sent by the host */
while (!(Endpoint_IsSetupOUTReceived()));
uint8_t GenericData[GENERIC_REPORT_SIZE];
Endpoint_Read_Control_Stream(&GenericData, sizeof(GenericData));
ProcessGenericHIDReport(GenericData);
/* Clear the endpoint data */
Endpoint_ClearSetupOUT();
/* Wait until the host is ready to receive the request confirmation */
while (!(Endpoint_IsSetupINReady()));
/* Handshake the request by sending an empty IN packet */
Endpoint_ClearSetupIN();
}
break;
}
}
/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
* log to a serial port, or anything else that is suitable for status updates.
*
* \param CurrentStatus Current status of the system, from the GenericHID_StatusCodes_t enum
*/
void UpdateStatus(uint8_t CurrentStatus)
{
uint8_t LEDMask = LEDS_NO_LEDS;
/* Set the LED mask to the appropriate LED mask based on the given status code */
switch (CurrentStatus)
{
case Status_USBNotReady:
LEDMask = (LEDS_LED1);
break;
case Status_USBEnumerating:
LEDMask = (LEDS_LED1 | LEDS_LED2);
break;
case Status_USBReady:
LEDMask = (LEDS_LED2 | LEDS_LED4);
break;
}
/* Set the board LEDs to the new LED mask */
LEDs_SetAllLEDs(LEDMask);
}
/** Function to process the lest received report from the host.
*
* \param DataArray Pointer to a buffer where the last report data is stored
*/
void ProcessGenericHIDReport(uint8_t* DataArray)
{
/*
This is where you need to process the reports being sent from the host to the device.
DataArray is an array holding the last report from the host. This function is called
each time the host has sent a report to the device.
*/
for (uint8_t i = 0; i < GENERIC_REPORT_SIZE; i++)
LastReceived[i] = DataArray[i];
}
/** Function to create the next report to send back to the host at the next reporting interval.
*
* \param DataArray Pointer to a buffer where the next report data should be stored
*/
void CreateGenericHIDReport(uint8_t* DataArray)
{
/*
This is where you need to create reports to be sent to the host from the device. This
function is called each time the host is ready to accept a new report. DataArray is
an array to hold the report to the host.
*/
for (uint8_t i = 0; i < GENERIC_REPORT_SIZE; i++)
DataArray[i] = LastReceived[i];
}
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
* controller.
*/
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
{
/* Save previously selected endpoint before selecting a new endpoint */
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
/* Clear the endpoint interrupt */
Endpoint_ClearEndpointInterrupt(ENDPOINT_CONTROLEP);
/* Process the control request */
USB_USBTask();
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
/* Check if Generic IN endpoint has interrupted */
if (Endpoint_HasEndpointInterrupted(GENERIC_IN_EPNUM))
{
/* Select the Generic IN Report Endpoint */
Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);