summaryrefslogtreecommitdiff
path: root/software/avr.lib/usbio.c
diff options
context:
space:
mode:
Diffstat (limited to 'software/avr.lib/usbio.c')
-rw-r--r--software/avr.lib/usbio.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/software/avr.lib/usbio.c b/software/avr.lib/usbio.c
new file mode 100644
index 0000000..1107ee4
--- /dev/null
+++ b/software/avr.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;
+}