added usbio lib

git-svn-id: https://svn.spreadspace.org/avr/trunk@196 aa12f405-d877-488e-9caf-2d797e2a1cc7

1 files changed, 118 insertions, 0 deletions

diff --git a/lib/usbio.c b/lib/usbio.c
new file mode 100644
index 0000000..1107ee4
--- /dev/null
+++ b/lib/usbio.c
@@ -0,0 +1,118 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
+ *                     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"
+#include "LUFA/Drivers/Peripheral/Serial.h"
+
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2012.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
+  {
+    .Config =
+      {
+        .ControlInterfaceNumber         = 0,
+
+        .DataINEndpointNumber           = CDC_TX_EPNUM,
+        .DataINEndpointSize             = CDC_TXRX_EPSIZE,
+        .DataINEndpointDoubleBank       = false,
+
+        .DataOUTEndpointNumber          = CDC_RX_EPNUM,
+        .DataOUTEndpointSize            = CDC_TXRX_EPSIZE,
+        .DataOUTEndpointDoubleBank      = false,
+
+        .NotificationEndpointNumber     = CDC_NOTIFICATION_EPNUM,
+        .NotificationEndpointSize       = CDC_NOTIFICATION_EPSIZE,
+        .NotificationEndpointDoubleBank = false,
+      },
+  };
+
+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*/
+
+FILE usb_stream;
+FILE dummy_stream;
+
+int dummy_putchar(char DataByte, FILE *Stream)
+{
+	return 0;
+}
+
+int dummy_getchar(FILE *Stream)
+{
+	return 0;
+}
+
+void usbio_init(void)
+{
+	dummy_stream = (FILE)FDEV_SETUP_STREAM(dummy_putchar, dummy_getchar, _FDEV_SETUP_RW);
+  stdin = stdout = stderr = &dummy_stream;
+
+  USB_Init();
+  CDC_Device_CreateStream(&VirtualSerial_CDC_Interface,&usb_stream);
+}
+
+void usbio_task(void)
+{
+  CDC_Device_USBTask(&VirtualSerial_CDC_Interface); 
+  USB_USBTask(); 
+}
+
+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;
+}