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.
388 lines
12 KiB
388 lines
12 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 GenericHIDHost demo. This file contains the main tasks of
|
|
* the demo and is responsible for the initial application hardware configuration.
|
|
*/
|
|
|
|
#include "GenericHIDHost.h"
|
|
|
|
/* Scheduler Task List */
|
|
TASK_LIST
|
|
{
|
|
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
|
|
{ .Task = USB_HID_Host , .TaskStatus = TASK_STOP },
|
|
};
|
|
|
|
|
|
/** Main program entry point. This routine configures the hardware required by the application, then
|
|
* starts the scheduler to run the application tasks.
|
|
*/
|
|
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 */
|
|
SerialStream_Init(9600, false);
|
|
LEDs_Init();
|
|
|
|
/* Indicate USB not ready */
|
|
UpdateStatus(Status_USBNotReady);
|
|
|
|
/* Initialize Scheduler so that it can be used */
|
|
Scheduler_Init();
|
|
|
|
/* Initialize USB Subsystem */
|
|
USB_Init();
|
|
|
|
/* Start-up message */
|
|
puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
|
|
"Generic HID Host Demo running.\r\n" ESC_INVERSE_OFF));
|
|
|
|
/* Scheduling - routine never returns, so put this last in the main function */
|
|
Scheduler_Start();
|
|
}
|
|
|
|
/** 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.
|
|
*/
|
|
EVENT_HANDLER(USB_DeviceAttached)
|
|
{
|
|
puts_P(PSTR("Device Attached.\r\n"));
|
|
UpdateStatus(Status_USBEnumerating);
|
|
|
|
/* Start USB management task to enumerate the device */
|
|
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
|
|
}
|
|
|
|
/** 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.
|
|
*/
|
|
EVENT_HANDLER(USB_DeviceUnattached)
|
|
{
|
|
/* Stop HID and USB management task */
|
|
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
|
|
Scheduler_SetTaskMode(USB_HID_Host, TASK_STOP);
|
|
|
|
puts_P(PSTR("Device Unattached.\r\n"));
|
|
UpdateStatus(Status_USBNotReady);
|
|
}
|
|
|
|
/** 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.
|
|
*/
|
|
EVENT_HANDLER(USB_DeviceEnumerationComplete)
|
|
{
|
|
/* Start HID Host task */
|
|
Scheduler_SetTaskMode(USB_HID_Host, TASK_RUN);
|
|
|
|
/* Indicate device enumeration complete */
|
|
UpdateStatus(Status_USBReady);
|
|
}
|
|
|
|
/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
|
|
EVENT_HANDLER(USB_HostError)
|
|
{
|
|
USB_ShutDown();
|
|
|
|
puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
|
|
printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
|
|
|
|
UpdateStatus(Status_HardwareError);
|
|
for(;;);
|
|
}
|
|
|
|
/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
|
|
* enumerating an attached USB device.
|
|
*/
|
|
EVENT_HANDLER(USB_DeviceEnumerationFailed)
|
|
{
|
|
puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
|
|
printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
|
|
printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
|
|
printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
|
|
|
|
UpdateStatus(Status_EnumerationError);
|
|
}
|
|
|
|
/** 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 GenericHIDHost_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);
|
|
break;
|
|
case Status_EnumerationError:
|
|
case Status_HardwareError:
|
|
LEDMask = (LEDS_LED1 | LEDS_LED3);
|
|
break;
|
|
}
|
|
|
|
/* Set the board LEDs to the new LED mask */
|
|
LEDs_SetAllLEDs(LEDMask);
|
|
}
|
|
|
|
/** Reads in and processes the next report from the attached device, displaying the report
|
|
* contents on the board LEDs and via the serial port.
|
|
*/
|
|
void ReadNextReport(void)
|
|
{
|
|
/* Select and unfreeze HID data IN pipe */
|
|
Pipe_SelectPipe(HID_DATA_IN_PIPE);
|
|
Pipe_Unfreeze();
|
|
|
|
/* Check to see if a packet has been received */
|
|
if (!(Pipe_IsINReceived()))
|
|
{
|
|
#if !defined(INTERRUPT_DATA_PIPE)
|
|
/* Refreeze HID data IN pipe */
|
|
Pipe_Freeze();
|
|
#endif
|
|
|
|
return;
|
|
}
|
|
|
|
/* Ensure pipe contains data before trying to read from it */
|
|
if (Pipe_IsReadWriteAllowed())
|
|
{
|
|
uint8_t ReportINData[Pipe_BytesInPipe()];
|
|
|
|
/* Read in HID report data */
|
|
Pipe_Read_Stream_LE(&ReportINData, sizeof(ReportINData));
|
|
|
|
/* Print report data through the serial port */
|
|
for (uint16_t CurrByte = 0; CurrByte < sizeof(ReportINData); CurrByte++)
|
|
printf_P(PSTR("0x%02X "), ReportINData[CurrByte]);
|
|
|
|
puts_P(PSTR("\r\n"));
|
|
}
|
|
|
|
/* Clear the IN endpoint, ready for next data packet */
|
|
Pipe_ClearIN();
|
|
|
|
#if !defined(INTERRUPT_DATA_PIPE)
|
|
/* Refreeze HID data IN pipe */
|
|
Pipe_Freeze();
|
|
#endif
|
|
}
|
|
|
|
/** Writes a report to the attached device.
|
|
*
|
|
* \param ReportOUTData Buffer containing the report to send to the device
|
|
* \param ReportIndex Index of the report in the device (zero if the device does not use multiple reports)
|
|
* \param ReportType Type of report to send, either HID_REPORTTYPE_OUTPUT or HID_REPORTTYPE_FEATURE
|
|
* \param ReportLength Length of the report to send
|
|
*/
|
|
void WriteNextReport(uint8_t* ReportOUTData, uint8_t ReportIndex, uint8_t ReportType, uint16_t ReportLength)
|
|
{
|
|
/* Select and unfreeze HID data OUT pipe */
|
|
Pipe_SelectPipe(HID_DATA_OUT_PIPE);
|
|
|
|
/* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
|
|
* control endpoint instead) - check to see if the OUT endpoint has been initialized */
|
|
if (Pipe_IsConfigured())
|
|
{
|
|
Pipe_Unfreeze();
|
|
|
|
/* Ensure pipe is ready to be written to before continuing */
|
|
if (!(Pipe_IsOUTReady()))
|
|
{
|
|
/* Refreeze the data OUT pipe */
|
|
Pipe_Freeze();
|
|
|
|
return;
|
|
}
|
|
|
|
/* If the report index is used, send it before the report data */
|
|
if (ReportIndex)
|
|
Pipe_Write_Byte(ReportIndex);
|
|
|
|
/* Write out HID report data */
|
|
Pipe_Write_Stream_LE(ReportOUTData, ReportLength);
|
|
|
|
/* Clear the OUT endpoint, send last data packet */
|
|
Pipe_ClearOUT();
|
|
|
|
/* Refreeze the data OUT pipe */
|
|
Pipe_Freeze();
|
|
}
|
|
else
|
|
{
|
|
/* Class specific request to send a HID report to the device */
|
|
USB_ControlRequest = (USB_Request_Header_t)
|
|
{
|
|
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
|
|
.bRequest = REQ_SetReport,
|
|
.wValue = ((ReportType << 8) | ReportIndex),
|
|
.wIndex = 0,
|
|
.wLength = ReportLength,
|
|
};
|
|
|
|
/* Select the control pipe for the request transfer */
|
|
Pipe_SelectPipe(PIPE_CONTROLPIPE);
|
|
|
|
/* Send the request to the device */
|
|
USB_Host_SendControlRequest(ReportOUTData);
|
|
}
|
|
}
|
|
|
|
/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
|
|
* HID reports from the device and to send reports if desired.
|
|
*/
|
|
TASK(USB_HID_Host)
|
|
{
|
|
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:
|
|
/* Standard request to set the device configuration to configuration 1 */
|
|
USB_ControlRequest = (USB_Request_Header_t)
|
|
{
|
|
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
|
|
.bRequest = REQ_SetConfiguration,
|
|
.wValue = 1,
|
|
.wIndex = 0,
|
|
.wLength = 0,
|
|
};
|
|
|
|
/* Select the control pipe for the request transfer */
|
|
Pipe_SelectPipe(PIPE_CONTROLPIPE);
|
|
|
|
/* Send the request, display error and wait for device detach if request fails */
|
|
if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
|
|
{
|
|
puts_P(PSTR("Control Error (Set Configuration).\r\n"));
|
|
printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
|
|
|
|
/* Indicate error status */
|
|
UpdateStatus(Status_EnumerationError);
|
|
|
|
/* Wait until USB device disconnected */
|
|
while (USB_IsConnected);
|
|
break;
|
|
}
|
|
|
|
USB_HostState = HOST_STATE_Configured;
|
|
break;
|
|
case HOST_STATE_Configured:
|
|
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("Control Error (Get Configuration).\r\n"));
|
|
else
|
|
puts_P(PSTR("Invalid Device.\r\n"));
|
|
|
|
printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
|
|
|
|
/* Indicate error status */
|
|
UpdateStatus(Status_EnumerationError);
|
|
|
|
/* Wait until USB device disconnected */
|
|
while (USB_IsConnected);
|
|
break;
|
|
}
|
|
|
|
#if defined(INTERRUPT_DATA_PIPE)
|
|
/* Select and unfreeze HID data IN pipe */
|
|
Pipe_SelectPipe(HID_DATA_IN_PIPE);
|
|
Pipe_Unfreeze();
|
|
#endif
|
|
|
|
puts_P(PSTR("HID Device Enumerated.\r\n"));
|
|
|
|
USB_HostState = HOST_STATE_Ready;
|
|
break;
|
|
#if !defined(INTERRUPT_DATA_PIPE)
|
|
case HOST_STATE_Ready:
|
|
ReadNextReport();
|
|
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#if defined(INTERRUPT_DATA_PIPE)
|
|
/** Interrupt handler for the Endpoint/Pipe interrupt vector. This interrupt fires each time an enabled
|
|
* pipe interrupt occurs on a pipe which has had that interrupt enabled.
|
|
*/
|
|
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
|
|
{
|
|
/* Save previously selected pipe before selecting a new pipe */
|
|
uint8_t PrevSelectedPipe = Pipe_GetCurrentPipe();
|
|
|
|
/* Check to see if the HID data IN pipe has caused the interrupt */
|
|
if (Pipe_HasPipeInterrupted(HID_DATA_IN_PIPE))
|
|
{
|
|
/* Clear the pipe interrupt, and select the data IN pipe */
|
|
Pipe_ClearPipeInterrupt(HID_DATA_IN_PIPE);
|
|
Pipe_SelectPipe(HID_DATA_IN_PIPE);
|
|
|
|
/* Check to see if the pipe IN interrupt has fired */
|
|
if (USB_INT_HasOccurred(PIPE_INT_IN) && USB_INT_IsEnabled(PIPE_INT_IN))
|
|
{
|
|
/* Clear interrupt flag */
|
|
USB_INT_Clear(PIPE_INT_IN);
|
|
|
|
/* Read and process the next report from the device */
|
|
ReadNextReport();
|
|
}
|
|
}
|
|
|
|
/* Restore previously selected pipe */
|
|
Pipe_SelectPipe(PrevSelectedPipe);
|
|
}
|
|
#endif
|