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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013-2018 Christian Pointner <equinox@spreadspace.org>
* 2013-2014 Othmar Gsenger <otti@wirdorange.org>
*
* This file is part of spreadspace avr utils.
*
* spreadspace avr utils is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* spreadspace avr utils is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "usbio.h"
#include <LUFA/Drivers/USB/USB.h>
#include "lufa-descriptor-usbserial.h"
/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
{
.Config =
{
.ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
.DataINEndpoint =
{
.Address = CDC_TX_EPADDR,
.Size = CDC_TXRX_EPSIZE,
.Banks = 1,
},
.DataOUTEndpoint =
{
.Address = CDC_RX_EPADDR,
.Size = CDC_TXRX_EPSIZE,
.Banks = 1,
},
.NotificationEndpoint =
{
.Address = CDC_NOTIFICATION_EPADDR,
.Size = CDC_NOTIFICATION_EPSIZE,
.Banks = 1,
},
},
};
void EVENT_USB_Device_ConfigurationChanged(void)
{
CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
}
void EVENT_USB_Device_ControlRequest(void)
{
CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
}
/* end LUFA CDC-ACM specific definitions*/
static int dummy_putchar(char DataByte, FILE *Stream) { return 0; }
static int dummy_getchar(FILE *Stream) { return 0; }
static FILE dummy_stream = FDEV_SETUP_STREAM(dummy_putchar, dummy_getchar, _FDEV_SETUP_RW);
static FILE usb_stream;
void usbio_init(void)
{
stdin = stdout = stderr = &dummy_stream;
USB_Init();
CDC_Device_CreateStream(&VirtualSerial_CDC_Interface,&usb_stream);
}
void usbio_task(void)
{
#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
if(USB_DeviceState == DEVICE_STATE_Unattached && USB_VBUS_GetStatus()) {
USB_Disable();
USB_Init();
}
#endif
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
int8_t usbio_is_connected(void)
{
if(stdin == &usb_stream)
return 1;
else
return 0;
}
int16_t usbio_bytes_received(void)
{
if(stdin == &usb_stream)
return CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface);
else
return 0;
}
void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if(CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR)
stdin = stdout = stderr = &usb_stream;
else
stdin = stdout = stderr = &dummy_stream;
}
void EVENT_USB_Device_Disconnect(void)
{
stdin = stdout = stderr = &dummy_stream;
}
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