/** Task to read and process the HID report descriptor and HID reports from the device
* and display the results onto the board LEDs.
*/
void JoystickHost_Task(void)
{
if (USB_HostState != HOST_STATE_Configured)
return;
/* Select and unfreeze joystick data pipe */
Pipe_SelectPipe(JOYSTICK_DATA_IN_PIPE);
Pipe_Unfreeze();
/* Check to see if a packet has been received */
if (Pipe_IsINReceived())
{
/* Check if data has been received from the attached joystick */
if (Pipe_IsReadWriteAllowed())
{
/* Create buffer big enough for the report */
uint8_t JoystickReport[Pipe_BytesInPipe()];
/* Load in the joystick report */
Pipe_Read_Stream_LE(JoystickReport, Pipe_BytesInPipe(), NULL);
/* Process the read in joystick report from the device */
ProcessJoystickReport(JoystickReport);
}
/* Clear the IN endpoint, ready for next data packet */
Pipe_ClearIN();
}
/* Freeze joystick data pipe */
Pipe_Freeze();
}
/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
* the HID report descriptor and HID reports from the device and display the results onto the board LEDs.
*/
void Joystick_HID_Task(void)
{
uint8_t ErrorCode;
/* Switch to determine what user-application handled host state the host state machine is in */
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 via status LEDs */
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 via status LEDs */
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
/* Wait until USB device disconnected */
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
printf_P(PSTR("Processing HID Report (Size %d Bytes).\r\n"), HIDReportSize);
/* Get and process the device's first HID report descriptor */
if ((ErrorCode = GetHIDReportData()) != ParseSuccessful)
{
puts_P(PSTR(ESC_FG_RED "Report Parse Error.\r\n"));
if (!(HIDReportInfo.TotalReportItems))
puts_P(PSTR("Not a valid Joystick." ESC_FG_WHITE));
else
printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
/* Indicate error via status LEDs */
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
/* Wait until USB device disconnected */
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
puts_P(PSTR("Joystick Enumerated.\r\n"));
USB_HostState = HOST_STATE_Configured;
break;
case HOST_STATE_Configured:
/* Select and unfreeze joystick data pipe */
Pipe_SelectPipe(JOYSTICK_DATA_IN_PIPE);
Pipe_Unfreeze();
/* Check to see if a packet has been received */
if (Pipe_IsINReceived())
{
/* Check if data has been received from the attached joystick */
if (Pipe_IsReadWriteAllowed())
{
/* Create buffer big enough for the report */
uint8_t JoystickReport[Pipe_BytesInPipe()];
/* Load in the joystick report */
Pipe_Read_Stream_LE(JoystickReport, Pipe_BytesInPipe(), NULL);
/* Process the read in joystick report from the device */
ProcessJoystickReport(JoystickReport);
}
/* Clear the IN endpoint, ready for next data packet */
Pipe_ClearIN();
}
/* Freeze joystick data pipe */
Pipe_Freeze();
break;
}
}