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.
358 lines
13 KiB
358 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 DualCDC demo. This file contains the main tasks of the demo and
|
|
* is responsible for the initial application hardware configuration.
|
|
*/
|
|
|
|
#include "DualCDC.h"
|
|
|
|
/* Scheduler Task List */
|
|
TASK_LIST
|
|
{
|
|
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
|
|
{ .Task = CDC1_Task , .TaskStatus = TASK_STOP },
|
|
{ .Task = CDC2_Task , .TaskStatus = TASK_STOP },
|
|
};
|
|
|
|
/* Globals: */
|
|
/** Contains the current baud rate and other settings of the first virtual serial port. While this demo does not use
|
|
* the physical USART and thus does not use these settings, they must still be retained and returned to the host
|
|
* upon request or the host will assume the device is non-functional.
|
|
*
|
|
* These values are set by the host via a class-specific request, however they are not required to be used accurately.
|
|
* It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
|
|
* serial link characteristics and instead sends and receives data in endpoint streams.
|
|
*/
|
|
CDC_Line_Coding_t LineCoding1 = { .BaudRateBPS = 9600,
|
|
.CharFormat = OneStopBit,
|
|
.ParityType = Parity_None,
|
|
.DataBits = 8 };
|
|
|
|
/** Contains the current baud rate and other settings of the second virtual serial port. While this demo does not use
|
|
* the physical USART and thus does not use these settings, they must still be retained and returned to the host
|
|
* upon request or the host will assume the device is non-functional.
|
|
*
|
|
* These values are set by the host via a class-specific request, however they are not required to be used accurately.
|
|
* It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
|
|
* serial link characteristics and instead sends and receives data in endpoint streams.
|
|
*/
|
|
CDC_Line_Coding_t LineCoding2 = { .BaudRateBPS = 9600,
|
|
.CharFormat = OneStopBit,
|
|
.ParityType = Parity_None,
|
|
.DataBits = 8 };
|
|
|
|
/** String to print through the first virtual serial port when the joystick is pressed upwards. */
|
|
char JoystickUpString[] = "Joystick Up\r\n";
|
|
|
|
/** String to print through the first virtual serial port when the joystick is pressed downward. */
|
|
char JoystickDownString[] = "Joystick Down\r\n";
|
|
|
|
/** String to print through the first virtual serial port when the joystick is pressed left. */
|
|
char JoystickLeftString[] = "Joystick Left\r\n";
|
|
|
|
/** String to print through the first virtual serial port when the joystick is pressed right. */
|
|
char JoystickRightString[] = "Joystick Right\r\n";
|
|
|
|
/** String to print through the first virtual serial port when the joystick is pressed inwards. */
|
|
char JoystickPressedString[] = "Joystick Pressed\r\n";
|
|
|
|
/** 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 */
|
|
Joystick_Init();
|
|
LEDs_Init();
|
|
|
|
/* Indicate USB not ready */
|
|
UpdateStatus(Status_USBNotReady);
|
|
|
|
/* Initialize Scheduler so that it can be used */
|
|
Scheduler_Init();
|
|
|
|
/* Initialize USB Subsystem */
|
|
USB_Init();
|
|
|
|
/* Scheduling - routine never returns, so put this last in the main function */
|
|
Scheduler_Start();
|
|
}
|
|
|
|
/** 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.
|
|
*/
|
|
void EVENT_USB_Connect(void)
|
|
{
|
|
/* Start USB management task */
|
|
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
|
|
|
|
/* 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 and CDC management tasks.
|
|
*/
|
|
void EVENT_USB_Disconnect(void)
|
|
{
|
|
/* Stop running CDC and USB management tasks */
|
|
Scheduler_SetTaskMode(CDC1_Task, TASK_STOP);
|
|
Scheduler_SetTaskMode(CDC2_Task, TASK_STOP);
|
|
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
|
|
|
|
/* Indicate USB not ready */
|
|
UpdateStatus(Status_USBNotReady);
|
|
}
|
|
|
|
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
|
|
* of the USB device after enumeration - the device endpoints are configured and the CDC management tasks are started.
|
|
*/
|
|
void EVENT_USB_ConfigurationChanged(void)
|
|
{
|
|
/* Setup CDC Notification, Rx and Tx Endpoints for the first CDC */
|
|
Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,
|
|
ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
Endpoint_ConfigureEndpoint(CDC1_TX_EPNUM, EP_TYPE_BULK,
|
|
ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
Endpoint_ConfigureEndpoint(CDC1_RX_EPNUM, EP_TYPE_BULK,
|
|
ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
/* Setup CDC Notification, Rx and Tx Endpoints for the second CDC */
|
|
Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,
|
|
ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
Endpoint_ConfigureEndpoint(CDC2_TX_EPNUM, EP_TYPE_BULK,
|
|
ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
Endpoint_ConfigureEndpoint(CDC2_RX_EPNUM, EP_TYPE_BULK,
|
|
ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,
|
|
ENDPOINT_BANK_SINGLE);
|
|
|
|
/* Indicate USB connected and ready */
|
|
UpdateStatus(Status_USBReady);
|
|
|
|
/* Start CDC tasks */
|
|
Scheduler_SetTaskMode(CDC1_Task, TASK_RUN);
|
|
Scheduler_SetTaskMode(CDC2_Task, TASK_RUN);
|
|
}
|
|
|
|
/** 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 CDC control commands,
|
|
* which are all issued via the control endpoint), so that they can be handled appropriately for the application.
|
|
*/
|
|
void EVENT_USB_UnhandledControlPacket(void)
|
|
{
|
|
/* Determine which interface's Line Coding data is being set from the wIndex parameter */
|
|
uint8_t* LineCodingData = (USB_ControlRequest.wIndex == 0) ? (uint8_t*)&LineCoding1 : (uint8_t*)&LineCoding2;
|
|
|
|
/* Process CDC specific control requests */
|
|
switch (USB_ControlRequest.bRequest)
|
|
{
|
|
case REQ_GetLineEncoding:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
/* Acknowledge the SETUP packet, ready for data transfer */
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Write the line coding data to the control endpoint */
|
|
Endpoint_Write_Control_Stream_LE(LineCodingData, sizeof(CDC_Line_Coding_t));
|
|
|
|
/* Finalize the stream transfer to send the last packet or clear the host abort */
|
|
Endpoint_ClearOUT();
|
|
}
|
|
|
|
break;
|
|
case REQ_SetLineEncoding:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
/* Acknowledge the SETUP packet, ready for data transfer */
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Read the line coding data in from the host into the global struct */
|
|
Endpoint_Read_Control_Stream_LE(LineCodingData, sizeof(CDC_Line_Coding_t));
|
|
|
|
/* Finalize the stream transfer to clear the last packet from the host */
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
break;
|
|
case REQ_SetControlLineState:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
/* Acknowledge the SETUP packet, ready for data transfer */
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Acknowledge status stage */
|
|
while (!(Endpoint_IsINReady()));
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
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 DualCDC_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 manage CDC data transmission and reception to and from the host for the first CDC interface, which sends joystick
|
|
* movements to the host as ASCII strings.
|
|
*/
|
|
TASK(CDC1_Task)
|
|
{
|
|
char* ReportString = NULL;
|
|
uint8_t JoyStatus_LCL = Joystick_GetStatus();
|
|
static bool ActionSent = false;
|
|
|
|
/* Determine if a joystick action has occurred */
|
|
if (JoyStatus_LCL & JOY_UP)
|
|
ReportString = JoystickUpString;
|
|
else if (JoyStatus_LCL & JOY_DOWN)
|
|
ReportString = JoystickDownString;
|
|
else if (JoyStatus_LCL & JOY_LEFT)
|
|
ReportString = JoystickLeftString;
|
|
else if (JoyStatus_LCL & JOY_RIGHT)
|
|
ReportString = JoystickRightString;
|
|
else if (JoyStatus_LCL & JOY_PRESS)
|
|
ReportString = JoystickPressedString;
|
|
|
|
/* Flag management - Only allow one string to be sent per action */
|
|
if (ReportString == NULL)
|
|
{
|
|
ActionSent = false;
|
|
}
|
|
else if (ActionSent == false)
|
|
{
|
|
ActionSent = true;
|
|
|
|
/* Select the Serial Tx Endpoint */
|
|
Endpoint_SelectEndpoint(CDC1_TX_EPNUM);
|
|
|
|
/* Write the String to the Endpoint */
|
|
Endpoint_Write_Stream_LE(ReportString, strlen(ReportString));
|
|
|
|
/* Finalize the stream transfer to send the last packet */
|
|
Endpoint_ClearIN();
|
|
|
|
/* Wait until the endpoint is ready for another packet */
|
|
while (!(Endpoint_IsINReady()));
|
|
|
|
/* Send an empty packet to ensure that the host does not buffer data sent to it */
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
/* Select the Serial Rx Endpoint */
|
|
Endpoint_SelectEndpoint(CDC1_RX_EPNUM);
|
|
|
|
/* Throw away any received data from the host */
|
|
if (Endpoint_IsOUTReceived())
|
|
Endpoint_ClearOUT();
|
|
}
|
|
|
|
/** Function to manage CDC data transmission and reception to and from the host for the second CDC interface, which echoes back
|
|
* all data sent to it from the host.
|
|
*/
|
|
TASK(CDC2_Task)
|
|
{
|
|
/* Select the Serial Rx Endpoint */
|
|
Endpoint_SelectEndpoint(CDC2_RX_EPNUM);
|
|
|
|
/* Check to see if any data has been received */
|
|
if (Endpoint_IsOUTReceived())
|
|
{
|
|
/* Create a temp buffer big enough to hold the incoming endpoint packet */
|
|
uint8_t Buffer[Endpoint_BytesInEndpoint()];
|
|
|
|
/* Remember how large the incoming packet is */
|
|
uint16_t DataLength = Endpoint_BytesInEndpoint();
|
|
|
|
/* Read in the incoming packet into the buffer */
|
|
Endpoint_Read_Stream_LE(&Buffer, DataLength);
|
|
|
|
/* Finalize the stream transfer to send the last packet */
|
|
Endpoint_ClearOUT();
|
|
|
|
/* Select the Serial Tx Endpoint */
|
|
Endpoint_SelectEndpoint(CDC2_TX_EPNUM);
|
|
|
|
/* Write the received data to the endpoint */
|
|
Endpoint_Write_Stream_LE(&Buffer, DataLength);
|
|
|
|
/* Finalize the stream transfer to send the last packet */
|
|
Endpoint_ClearIN();
|
|
|
|
/* Wait until the endpoint is ready for the next packet */
|
|
while (!(Endpoint_IsINReady()));
|
|
|
|
/* Send an empty packet to prevent host buffering */
|
|
Endpoint_ClearIN();
|
|
}
|
|
}
|