aboutsummaryrefslogtreecommitdiffstats
path: root/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c')
-rw-r--r--lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c202
1 files changed, 202 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c b/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c
new file mode 100644
index 000000000..a3d419ae5
--- /dev/null
+++ b/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c
@@ -0,0 +1,202 @@
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2017.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, 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 disclaims 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 VirtualSerial demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "VirtualSerial.h"
+
+/** LUFA CDC Class driver interface configuration and state information. This structure is
+ * passed to all CDC Class driver functions, so that multiple instances of the same class
+ * within a device can be differentiated from one another.
+ */
+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,
+ },
+ },
+ };
+
+/** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
+ * used like any regular character stream in the C APIs.
+ */
+static FILE USBSerialStream;
+
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ * setup of all components and the main program loop.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ /* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
+ CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ GlobalInterruptEnable();
+
+ for (;;)
+ {
+ CheckJoystickMovement();
+
+ /* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
+ CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+
+ CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+#elif (ARCH == ARCH_XMEGA)
+ /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
+ XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
+ XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
+
+ /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
+ XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
+ XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
+
+ PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
+#endif
+
+ /* Hardware Initialization */
+ Joystick_Init();
+ LEDs_Init();
+ USB_Init();
+}
+
+/** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
+void CheckJoystickMovement(void)
+{
+ uint8_t JoyStatus_LCL = Joystick_GetStatus();
+ char* ReportString = NULL;
+ static bool ActionSent = false;
+
+ if (JoyStatus_LCL & JOY_UP)
+ ReportString = "Joystick Up\r\n";
+ else if (JoyStatus_LCL & JOY_DOWN)
+ ReportString = "Joystick Down\r\n";
+ else if (JoyStatus_LCL & JOY_LEFT)
+ ReportString = "Joystick Left\r\n";
+ else if (JoyStatus_LCL & JOY_RIGHT)
+ ReportString = "Joystick Right\r\n";
+ else if (JoyStatus_LCL & JOY_PRESS)
+ ReportString = "Joystick Pressed\r\n";
+ else
+ ActionSent = false;
+
+ if ((ReportString != NULL) && (ActionSent == false))
+ {
+ ActionSent = true;
+
+ /* Write the string to the virtual COM port via the created character stream */
+ fputs(ReportString, &USBSerialStream);
+
+ /* Alternatively, without the stream: */
+ // CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString);
+ }
+}
+
+/** Event handler for the library USB Connection event. */
+void EVENT_USB_Device_Connect(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the library USB Disconnection event. */
+void EVENT_USB_Device_Disconnect(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+
+ LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
+}
+
+/** CDC class driver callback function the processing of changes to the virtual
+ * control lines sent from the host..
+ *
+ * \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
+ */
+void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t *const CDCInterfaceInfo)
+{
+ /* You can get changes to the virtual CDC lines in this callback; a common
+ use-case is to use the Data Terminal Ready (DTR) flag to enable and
+ disable CDC communications in your application when set to avoid the
+ application blocking while waiting for a host to become ready and read
+ in the pending data from the USB endpoints.
+ */
+ bool HostReady = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR) != 0;
+}