void APP_Tasks (void )
{
switch(appData.state)
{
case APP_STATE_INIT:
/* Open an instance of the device layer */
appData.deviceHandle = USB_DEVICE_Open( 0, DRV_IO_INTENT_READWRITE );
/* Register a callback with device layer to get
* event notification (for end point 0) */
USB_DEVICE_EventCallBackSet(appData.deviceHandle,
APP_USBDeviceEventHandler);
/* Attach the device */
USB_DEVICE_Attach(appData.deviceHandle);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device is configured. The
* isConfigured flag is updated in the
* Device Event Handler */
if(appData.isConfigured)
{
/* Initialize the flag and place a request for a
* output report */
appData.isReportReceived = false;
USB_DEVICE_HID_ReportReceive(appData.hidInstance,
&appData.receiveTransferHandle,
(uint8_t *)&appData.keyboardOutputReport,1);
appData.state = APP_STATE_CHECK_IF_CONFIGURED;
}
break;
case APP_STATE_CHECK_IF_CONFIGURED:
/* This state is needed because the device can get
* unconfigured asynchronously. Any application state
* machine reset should happen within the state machine
* context only. */
if(appData.isConfigured)
{
appData.state = APP_STATE_SWITCH_PROCESS;
}
else
{
/* This means the device got de-configured.
* We reset the state and the wait for configuration */
APP_StateReset();
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
break;
case APP_STATE_SWITCH_PROCESS:
/* Process the switch state and go to the
* next state. */
APP_ProcessSwitchPress(&appData);
appData.state = APP_STATE_CHECK_FOR_OUTPUT_REPORT;
break;
case APP_STATE_CHECK_FOR_OUTPUT_REPORT:
if(appData.isReportReceived == true)
{
/* Update the LED and schedule and
* request */
APP_KeyboardLEDStatus();
appData.isReportReceived = false;
USB_DEVICE_HID_ReportReceive(appData.hidInstance,
&appData.receiveTransferHandle,
(uint8_t *)&appData.keyboardOutputReport,1);
}
appData.state = APP_STATE_EMULATE_KEYBOARD;
break;
case APP_STATE_EMULATE_KEYBOARD:
if(appData.isReportSentComplete)
{
/* This means report can be sent*/
APP_EmulateKeyboard();
appData.isReportSentComplete = false;
USB_DEVICE_HID_ReportSend(appData.hidInstance,
&appData.sendTransferHandle,
(uint8_t *)&appData.keyboardInputReport,
sizeof(KEYBOARD_INPUT_REPORT));
}
appData.state = APP_STATE_CHECK_IF_CONFIGURED;
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}
void APP_Tasks ( void )
{
//static int8_t vector = 0;
static uint8_t movement_length = 0;
static bool sent_dont_move = false;
short accels[3];
double xvel;
double yvel;
//int8_t dir_table[] ={-4,-4,-4, 0, 4, 4, 4, 0};
/* Check the application's current state. */
switch ( appData.state )
{
/* Application's initial state. */
case APP_STATE_INIT:
{
/* Open the device layer */
appData.deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0,
DRV_IO_INTENT_READWRITE );
if(appData.deviceHandle != USB_DEVICE_HANDLE_INVALID)
{
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventHandlerSet(appData.deviceHandle,
APP_USBDeviceEventHandler, 0);
appData.state = APP_STATE_WAIT_FOR_CONFIGURATION;
}
else
{
/* The Device Layer is not ready to be opened. We should try
* again later. */
}
break;
}
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device is configured. The
* isConfigured flag is updated in the
* Device Event Handler */
if(appData.isConfigured)
{
appData.state = APP_STATE_MOUSE_EMULATE;
}
break;
case APP_STATE_MOUSE_EMULATE:
APP_ProcessSwitchPress();
/* The following logic rotates the mouse icon when
* a switch is pressed */
if(appData.isSwitchPressed)
{
/* Toggle the mouse emulation with each switch press */
appData.emulateMouse ^= 1;
appData.isSwitchPressed = false;
}
if(appData.emulateMouse)
{
sent_dont_move = false;
if(movement_length > 50)
{
acc_read_register(OUT_X_L_A, (unsigned char *) accels, 6);
xvel = accels[0]/10000;
yvel = accels[1]/10000;
appData.xCoordinate = (double) xvel;
appData.yCoordinate = (double) yvel;
appData.mouseButton[0] = MOUSE_BUTTON_STATE_RELEASED;
appData.mouseButton[1] = MOUSE_BUTTON_STATE_RELEASED;
//appData.xCoordinate =(int8_t)dir_table[vector & 0x07] ;
//appData.yCoordinate =(int8_t)dir_table[(vector+2) & 0x07];
//vector ++;
movement_length = 0;
}
}
else
{
appData.mouseButton[0] = MOUSE_BUTTON_STATE_RELEASED;
appData.mouseButton[1] = MOUSE_BUTTON_STATE_RELEASED;
appData.xCoordinate = 0;
appData.yCoordinate = 0;
}
if(!appData.isMouseReportSendBusy)
{
if(((sent_dont_move == false) && (!appData.emulateMouse)) || (appData.emulateMouse))
{
/* This means we can send the mouse report. The
isMouseReportBusy flag is updated in the HID Event Handler. */
appData.isMouseReportSendBusy = true;
/* Create the mouse report */
MOUSE_ReportCreate(appData.xCoordinate, appData.yCoordinate,
appData.mouseButton, &mouseReport);
if(memcmp((const void *)&mouseReportPrevious, (const void *)&mouseReport,
(size_t)sizeof(mouseReport)) == 0)
{
/* Reports are same as previous report. However mouse reports
* can be same as previous report as the co-ordinate positions are relative.
* In that case it needs to be send */
if((appData.xCoordinate == 0) && (appData.yCoordinate == 0))
{
/* If the coordinate positions are 0, that means there
* is no relative change */
if(appData.idleRate == 0)
{
appData.isMouseReportSendBusy = false;
}
else
{
/* Check the idle rate here. If idle rate time elapsed
* then the data will be sent. Idle rate resolution is
* 4 msec as per HID specification; possible range is
* between 4msec >= idlerate <= 1020 msec.
*/
if(appData.setIdleTimer * APP_USB_CONVERT_TO_MILLISECOND
>= appData.idleRate * 4)
{
/* Send REPORT as idle time has elapsed */
appData.isMouseReportSendBusy = true;
}
else
{
/* Do not send REPORT as idle time has not elapsed */
appData.isMouseReportSendBusy = false;
}
}
}
}
if(appData.isMouseReportSendBusy == true)
{
/* Copy the report sent to previous */
memcpy((void *)&mouseReportPrevious, (const void *)&mouseReport,
(size_t)sizeof(mouseReport));
/* Send the mouse report. */
USB_DEVICE_HID_ReportSend(appData.hidInstance,
&appData.reportTransferHandle, (uint8_t*)&mouseReport,
sizeof(MOUSE_REPORT));
appData.setIdleTimer = 0;
}
movement_length ++;
sent_dont_move = true;
}
}
break;
case APP_STATE_ERROR:
break;
/* The default state should never be executed. */
default:
{
/* TODO: Handle error in application's state machine. */
break;
}
}
}
/**********************************************************
* Application tasks routine. This function implements the
* application state machine.
***********************************************************/
void APP_Tasks ( APP_DATA * appData )
{
/* Update the application state machine based
* on the current state */
USB_DEVICE_CDC_RESULT result;
APP_ProcessSwitchPress(appData);
switch(appData->state)
{
case APP_STATE_INIT:
/* Open the device layer */
appData->deviceHandle = USB_DEVICE_Open( USB_DEVICE_INDEX_0,
DRV_IO_INTENT_READWRITE );
if(appData->deviceHandle == USB_DEVICE_HANDLE_INVALID)
{
SYS_ASSERT(false, "Could not open device layer");
appData->state = APP_STATE_ERROR;
break;
}
/* Register a callback with device layer to get event notification (for end point 0) */
USB_DEVICE_EventCallBackSet(appData->deviceHandle, APP_USBDeviceEventHandler);
/* Attach the device */
USB_DEVICE_Attach (appData->deviceHandle);
appData->state = APP_STATE_WAIT_FOR_CONFIGURATION;
break;
case APP_STATE_WAIT_FOR_CONFIGURATION:
/* Check if the device was configured */
if(appData->isConfigured)
{
/* If the device is configured then lets start reading */
appData->state = APP_STATE_SCHEDULE_READ;
}
break;
case APP_STATE_SCHEDULE_READ:
if(APP_StateReset())
{
break;
}
/* If a read is complete, then schedule a read
* else wait for the current read to complete */
appData->state = APP_STATE_WAIT_FOR_READ_COMPLETE;
if(appData->isReadComplete == true)
{
appData->isReadComplete = false;
appData->readTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
USB_DEVICE_CDC_Read (appData->cdcInstance, &appData->readTransferHandle,
appData->readBuffer, 64);
if(appData->readTransferHandle == USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID)
{
appData->state = APP_STATE_ERROR;
break;
}
}
break;
case APP_STATE_WAIT_FOR_READ_COMPLETE:
case APP_STATE_CHECK_SWITCH_PRESSED:
if(APP_StateReset())
{
break;
}
/* Check if a character was received or a switch was pressed.
* The isReadComplete flag gets updated in the CDC event handler. */
if(appData->isReadComplete || appData->isSwitchPressed)
{
appData->state = APP_STATE_SCHEDULE_WRITE;
}
break;
case APP_STATE_SCHEDULE_WRITE:
if(APP_StateReset())
{
break;
}
/* Setup the write */
appData->writeTransferHandle = USB_DEVICE_CDC_TRANSFER_HANDLE_INVALID;
appData->isWriteComplete = false;
appData->state = APP_STATE_WAIT_FOR_WRITE_COMPLETE;
if(appData->isSwitchPressed)
{
/* If the switch was pressed, then send the switch prompt*/
appData->isSwitchPressed = false;
result = USB_DEVICE_CDC_Write(appData->cdcInstance, &appData->writeTransferHandle,
switchPrompt, 23, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
else
{
/* Else echo the received character + 1*/
appData->readBuffer[0] = appData->readBuffer[0] + 1;
USB_DEVICE_CDC_Write(appData->cdcInstance, &appData->writeTransferHandle,
appData->readBuffer, 1, USB_DEVICE_CDC_TRANSFER_FLAGS_DATA_COMPLETE);
}
break;
case APP_STATE_WAIT_FOR_WRITE_COMPLETE:
if(APP_StateReset())
{
break;
}
/* Check if a character was sent. The isWriteComplete
* flag gets updated in the CDC event handler */
if(appData->isWriteComplete == true)
{
appData->state = APP_STATE_SCHEDULE_READ;
}
break;
case APP_STATE_ERROR:
break;
default:
break;
}
}