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diff --git a/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c b/lib/lufa/Demos/Device/ClassDriver/VirtualSerial/VirtualSerial.c
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1/*
2 LUFA Library
3 Copyright (C) Dean Camera, 2017.
4
5 dean [at] fourwalledcubicle [dot] com
6 www.lufa-lib.org
7*/
8
9/*
10 Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
11
12 Permission to use, copy, modify, distribute, and sell this
13 software and its documentation for any purpose is hereby granted
14 without fee, provided that the above copyright notice appear in
15 all copies and that both that the copyright notice and this
16 permission notice and warranty disclaimer appear in supporting
17 documentation, and that the name of the author not be used in
18 advertising or publicity pertaining to distribution of the
19 software without specific, written prior permission.
20
21 The author disclaims all warranties with regard to this
22 software, including all implied warranties of merchantability
23 and fitness. In no event shall the author be liable for any
24 special, indirect or consequential damages or any damages
25 whatsoever resulting from loss of use, data or profits, whether
26 in an action of contract, negligence or other tortious action,
27 arising out of or in connection with the use or performance of
28 this software.
29*/
30
31/** \file
32 *
33 * Main source file for the VirtualSerial demo. This file contains the main tasks of
34 * the demo and is responsible for the initial application hardware configuration.
35 */
36
37#include "VirtualSerial.h"
38
39/** LUFA CDC Class driver interface configuration and state information. This structure is
40 * passed to all CDC Class driver functions, so that multiple instances of the same class
41 * within a device can be differentiated from one another.
42 */
43USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
44 {
45 .Config =
46 {
47 .ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
48 .DataINEndpoint =
49 {
50 .Address = CDC_TX_EPADDR,
51 .Size = CDC_TXRX_EPSIZE,
52 .Banks = 1,
53 },
54 .DataOUTEndpoint =
55 {
56 .Address = CDC_RX_EPADDR,
57 .Size = CDC_TXRX_EPSIZE,
58 .Banks = 1,
59 },
60 .NotificationEndpoint =
61 {
62 .Address = CDC_NOTIFICATION_EPADDR,
63 .Size = CDC_NOTIFICATION_EPSIZE,
64 .Banks = 1,
65 },
66 },
67 };
68
69/** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
70 * used like any regular character stream in the C APIs.
71 */
72static FILE USBSerialStream;
73
74
75/** Main program entry point. This routine contains the overall program flow, including initial
76 * setup of all components and the main program loop.
77 */
78int main(void)
79{
80 SetupHardware();
81
82 /* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
83 CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
84
85 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
86 GlobalInterruptEnable();
87
88 for (;;)
89 {
90 CheckJoystickMovement();
91
92 /* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
93 CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
94
95 CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
96 USB_USBTask();
97 }
98}
99
100/** Configures the board hardware and chip peripherals for the demo's functionality. */
101void SetupHardware(void)
102{
103#if (ARCH == ARCH_AVR8)
104 /* Disable watchdog if enabled by bootloader/fuses */
105 MCUSR &= ~(1 << WDRF);
106 wdt_disable();
107
108 /* Disable clock division */
109 clock_prescale_set(clock_div_1);
110#elif (ARCH == ARCH_XMEGA)
111 /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
112 XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
113 XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
114
115 /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
116 XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
117 XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
118
119 PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
120#endif
121
122 /* Hardware Initialization */
123 Joystick_Init();
124 LEDs_Init();
125 USB_Init();
126}
127
128/** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
129void CheckJoystickMovement(void)
130{
131 uint8_t JoyStatus_LCL = Joystick_GetStatus();
132 char* ReportString = NULL;
133 static bool ActionSent = false;
134
135 if (JoyStatus_LCL & JOY_UP)
136 ReportString = "Joystick Up\r\n";
137 else if (JoyStatus_LCL & JOY_DOWN)
138 ReportString = "Joystick Down\r\n";
139 else if (JoyStatus_LCL & JOY_LEFT)
140 ReportString = "Joystick Left\r\n";
141 else if (JoyStatus_LCL & JOY_RIGHT)
142 ReportString = "Joystick Right\r\n";
143 else if (JoyStatus_LCL & JOY_PRESS)
144 ReportString = "Joystick Pressed\r\n";
145 else
146 ActionSent = false;
147
148 if ((ReportString != NULL) && (ActionSent == false))
149 {
150 ActionSent = true;
151
152 /* Write the string to the virtual COM port via the created character stream */
153 fputs(ReportString, &USBSerialStream);
154
155 /* Alternatively, without the stream: */
156 // CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString);
157 }
158}
159
160/** Event handler for the library USB Connection event. */
161void EVENT_USB_Device_Connect(void)
162{
163 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
164}
165
166/** Event handler for the library USB Disconnection event. */
167void EVENT_USB_Device_Disconnect(void)
168{
169 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
170}
171
172/** Event handler for the library USB Configuration Changed event. */
173void EVENT_USB_Device_ConfigurationChanged(void)
174{
175 bool ConfigSuccess = true;
176
177 ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
178
179 LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
180}
181
182/** Event handler for the library USB Control Request reception event. */
183void EVENT_USB_Device_ControlRequest(void)
184{
185 CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
186}
187
188/** CDC class driver callback function the processing of changes to the virtual
189 * control lines sent from the host..
190 *
191 * \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
192 */
193void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t *const CDCInterfaceInfo)
194{
195 /* You can get changes to the virtual CDC lines in this callback; a common
196 use-case is to use the Data Terminal Ready (DTR) flag to enable and
197 disable CDC communications in your application when set to avoid the
198 application blocking while waiting for a host to become ready and read
199 in the pending data from the USB endpoints.
200 */
201 bool HostReady = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR) != 0;
202}
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