You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
410 lines
13 KiB
410 lines
13 KiB
/*
|
|
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 MouseFullInt demo. This file contains the main tasks of the demo and
|
|
* is responsible for the initial application hardware configuration.
|
|
*/
|
|
|
|
#include "MouseFullInt.h"
|
|
|
|
/* Project Tags, for reading out using the ButtLoad project */
|
|
BUTTLOADTAG(ProjName, "LUFA MouseFI App");
|
|
BUTTLOADTAG(BuildTime, __TIME__);
|
|
BUTTLOADTAG(BuildDate, __DATE__);
|
|
BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);
|
|
|
|
/* Global Variables */
|
|
/** Indicates what report mode the host has requested, true for normal HID reporting mode, false for special boot
|
|
* protocol reporting mode.
|
|
*/
|
|
bool UsingReportProtocol = true;
|
|
|
|
/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports
|
|
* for either the entire idle duration, or until the report status changes (e.g. the user moves the mouse).
|
|
*/
|
|
uint8_t IdleCount = 0;
|
|
|
|
/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
|
|
* milliseconds. This is seperate to the IdleCount timer and is incremented and compared as the host may request
|
|
* the current idle period via a Get Idle HID class request, thus its value must be preserved.
|
|
*/
|
|
uint16_t IdleMSRemaining = 0;
|
|
|
|
|
|
/** 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);
|
|
|
|
/* Hardware Initialization */
|
|
Joystick_Init();
|
|
LEDs_Init();
|
|
HWB_Init();
|
|
|
|
/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
|
|
OCR0A = 0x7D;
|
|
TCCR0A = (1 << WGM01);
|
|
TCCR0B = ((1 << CS01) | (1 << CS00));
|
|
TIMSK0 = (1 << OCIE0A);
|
|
|
|
/* Indicate USB not ready */
|
|
UpdateStatus(Status_USBNotReady);
|
|
|
|
/* Initialize USB Subsystem */
|
|
USB_Init();
|
|
|
|
/* Main program code loop */
|
|
for (;;)
|
|
{
|
|
/* No main code -- all USB code is interrupt driven */
|
|
}
|
|
}
|
|
|
|
/** 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);
|
|
|
|
/* Default to report protocol on connect */
|
|
UsingReportProtocol = true;
|
|
}
|
|
|
|
/** 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_Disconnect event. This indicates that the device is no longer connected to a host via
|
|
* the status LEDs.
|
|
*/
|
|
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 mouse device endpoints.
|
|
*/
|
|
EVENT_HANDLER(USB_ConfigurationChanged)
|
|
{
|
|
/* Setup Mouse Report Endpoint */
|
|
Endpoint_ConfigureEndpoint(MOUSE_EPNUM, EP_TYPE_INTERRUPT,
|
|
ENDPOINT_DIR_IN, MOUSE_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
/* Enable the endpoint IN interrupt ISR for the report endpoint */
|
|
USB_INT_Enable(ENDPOINT_INT_IN);
|
|
|
|
/* 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))
|
|
{
|
|
USB_MouseReport_Data_t MouseReportData;
|
|
|
|
/* Create the next mouse report for transmission to the host */
|
|
GetNextReport(&MouseReportData);
|
|
|
|
/* Ignore report type and ID number value */
|
|
Endpoint_Discard_Word();
|
|
|
|
/* Ignore unused Interface number value */
|
|
Endpoint_Discard_Word();
|
|
|
|
/* Read in the number of bytes in the report to send to the host */
|
|
uint16_t wLength = Endpoint_Read_Word_LE();
|
|
|
|
/* If trying to send more bytes than exist to the host, clamp the value at the report size */
|
|
if (wLength > sizeof(MouseReportData))
|
|
wLength = sizeof(MouseReportData);
|
|
|
|
Endpoint_ClearSetupReceived();
|
|
|
|
/* Write the report data to the control endpoint */
|
|
Endpoint_Write_Control_Stream_LE(&MouseReportData, wLength);
|
|
|
|
/* Clear the report data afterwards */
|
|
memset(&MouseReportData, 0, sizeof(MouseReportData));
|
|
|
|
/* Finalize the stream transfer to send the last packet or clear the host abort */
|
|
Endpoint_ClearSetupOUT();
|
|
}
|
|
|
|
break;
|
|
case REQ_GetProtocol:
|
|
if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSetupReceived();
|
|
|
|
/* Write the current protocol flag to the host */
|
|
Endpoint_Write_Byte(UsingReportProtocol);
|
|
|
|
/* Send the flag to the host */
|
|
Endpoint_ClearSetupIN();
|
|
|
|
/* Acknowledge status stage */
|
|
while (!(Endpoint_IsSetupOUTReceived()));
|
|
Endpoint_ClearSetupOUT();
|
|
}
|
|
|
|
break;
|
|
case REQ_SetProtocol:
|
|
if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
/* Read in the wValue parameter containing the new protocol mode */
|
|
uint16_t wValue = Endpoint_Read_Word_LE();
|
|
|
|
Endpoint_ClearSetupReceived();
|
|
|
|
/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
|
|
UsingReportProtocol = (wValue != 0x0000);
|
|
|
|
/* Acknowledge status stage */
|
|
while (!(Endpoint_IsSetupINReady()));
|
|
Endpoint_ClearSetupIN();
|
|
}
|
|
|
|
break;
|
|
case REQ_SetIdle:
|
|
if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
/* Read in the wValue parameter containing the idle period */
|
|
uint16_t wValue = Endpoint_Read_Word_LE();
|
|
|
|
Endpoint_ClearSetupReceived();
|
|
|
|
/* Get idle period in MSB */
|
|
IdleCount = (wValue >> 8);
|
|
|
|
/* Acknowledge status stage */
|
|
while (!(Endpoint_IsSetupINReady()));
|
|
Endpoint_ClearSetupIN();
|
|
}
|
|
|
|
break;
|
|
case REQ_GetIdle:
|
|
if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSetupReceived();
|
|
|
|
/* Write the current idle duration to the host */
|
|
Endpoint_Write_Byte(IdleCount);
|
|
|
|
/* Send the flag to the host */
|
|
Endpoint_ClearSetupIN();
|
|
|
|
/* Acknowledge status stage */
|
|
while (!(Endpoint_IsSetupOUTReceived()));
|
|
Endpoint_ClearSetupOUT();
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and increments the
|
|
* scheduler elapsed idle period counter when the host has set an idle period.
|
|
*/
|
|
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
|
|
{
|
|
/* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */
|
|
if (IdleMSRemaining)
|
|
IdleMSRemaining--;
|
|
}
|
|
|
|
/** Fills the given HID report data structure with the next HID report to send to the host.
|
|
*
|
|
* \param ReportData Pointer to a HID report data structure to be filled
|
|
*
|
|
* \return Boolean true if the new report differs from the last report, false otherwise
|
|
*/
|
|
bool GetNextReport(USB_MouseReport_Data_t* ReportData)
|
|
{
|
|
static uint8_t PrevJoyStatus = 0;
|
|
static bool PrevHWBStatus = false;
|
|
uint8_t JoyStatus_LCL = Joystick_GetStatus();
|
|
bool InputChanged = false;
|
|
|
|
/* Clear the report contents */
|
|
memset(ReportData, 0, sizeof(USB_MouseReport_Data_t));
|
|
|
|
if (JoyStatus_LCL & JOY_UP)
|
|
ReportData->Y = -1;
|
|
else if (JoyStatus_LCL & JOY_DOWN)
|
|
ReportData->Y = 1;
|
|
|
|
if (JoyStatus_LCL & JOY_RIGHT)
|
|
ReportData->X = 1;
|
|
else if (JoyStatus_LCL & JOY_LEFT)
|
|
ReportData->X = -1;
|
|
|
|
if (JoyStatus_LCL & JOY_PRESS)
|
|
ReportData->Button = (1 << 0);
|
|
|
|
if (HWB_GetStatus())
|
|
ReportData->Button |= (1 << 1);
|
|
|
|
/* Check if the new report is different to the previous report */
|
|
InputChanged = ((uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(HWB_GetStatus() ^ PrevHWBStatus));
|
|
|
|
/* Save the current joystick and HWB status for later comparison */
|
|
PrevJoyStatus = JoyStatus_LCL;
|
|
PrevHWBStatus = HWB_GetStatus();
|
|
|
|
/* Return whether the new report is different to the previous report or not */
|
|
return InputChanged;
|
|
}
|
|
|
|
/** 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 MouseFullInt_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);
|
|
}
|
|
|
|
/** 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. It is also used to respond to standard and class specific requests send to the device on the control
|
|
* endpoint, by handing them off to the LUFA library when they are received.
|
|
*/
|
|
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
|
|
{
|
|
/* 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 mouse endpoint has interrupted */
|
|
if (Endpoint_HasEndpointInterrupted(MOUSE_EPNUM))
|
|
{
|
|
USB_MouseReport_Data_t MouseReportData;
|
|
bool SendReport = true;
|
|
|
|
/* Select the Mouse Report Endpoint */
|
|
Endpoint_SelectEndpoint(MOUSE_EPNUM);
|
|
|
|
/* Clear the endpoint IN interrupt flag */
|
|
USB_INT_Clear(ENDPOINT_INT_IN);
|
|
|
|
/* Clear the Mouse Report endpoint interrupt and select the endpoint */
|
|
Endpoint_ClearEndpointInterrupt(MOUSE_EPNUM);
|
|
|
|
/* Create the next mouse report for transmission to the host */
|
|
GetNextReport(&MouseReportData);
|
|
|
|
/* Check if the idle period is set*/
|
|
if (IdleCount)
|
|
{
|
|
/* Determine if the idle period has elapsed */
|
|
if (!(IdleMSRemaining))
|
|
{
|
|
/* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */
|
|
IdleMSRemaining = (IdleCount << 2);
|
|
}
|
|
else
|
|
{
|
|
/* Idle period not elapsed, indicate that a report must not be sent */
|
|
SendReport = false;
|
|
}
|
|
}
|
|
|
|
/* Check to see if a report should be issued */
|
|
if (SendReport)
|
|
{
|
|
/* Write Mouse Report Data */
|
|
Endpoint_Write_Stream_LE(&MouseReportData, sizeof(MouseReportData));
|
|
}
|
|
|
|
/* Finalize the stream transfer to send the last packet */
|
|
Endpoint_ClearCurrentBank();
|
|
}
|
|
}
|