LUFA/CodeTemplates/DeviceTemplate/DeviceApplication.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2014.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2014  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 USB device application. This file contains the
  34  *  main tasks of the application and is responsible for the initial
  35  *  application hardware configuration.
  36  */
  37
  38 #include "DeviceApplication.h"
  39
  40 /** Main program entry point. This routine contains the overall program flow, including initial
  41  *  setup of all components and the main program loop.
  42  */
  43 int main(void)
  44 {
  45         SetupHardware();
  46
  47         GlobalInterruptEnable();
  48
  49         for (;;)
  50         {
  51                 USB_USBTask();
  52         }
  53 }
  54
  55 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  56 void SetupHardware(void)
  57 {
  58         #if (ARCH == ARCH_AVR8)
  59                 /* Disable watchdog if enabled by bootloader/fuses */
  60                 MCUSR &= ~(1 << WDRF);
  61                 wdt_disable();
  62
  63                 /* Disable clock division */
  64                 clock_prescale_set(clock_div_1);
  65
  66                 /* Hardware Initialization */
  67                 USB_Init(USB_MODE_Device, USB_DEVICE_OPT_FULLSPEED | USB_OPT_AUTO_PLL);
  68         #elif (ARCH == ARCH_XMEGA)
  69                 /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
  70                 XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
  71                 XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
  72
  73                 /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
  74                 XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
  75                 XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
  76
  77                 PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
  78
  79                 /* Hardware Initialization */
  80                 USB_Init(USB_OPT_RC32MCLKSRC | USB_OPT_BUSEVENT_PRIHIGH);
  81         #endif
  82 }
  83
  84 /** Event handler for the library USB Connection event. */
  85 void EVENT_USB_Device_Connect(void)
  86 {
  87
  88 }
  89
  90 /** Event handler for the library USB Disconnection event. */
  91 void EVENT_USB_Device_Disconnect(void)
  92 {
  93
  94 }
  95
  96 /** Event handler for the library USB Configuration Changed event. */
  97 void EVENT_USB_Device_ConfigurationChanged(void)
  98 {
  99
 100 }
 101
 102 /** Event handler for the library USB Control Request reception event. */
 103 void EVENT_USB_Device_ControlRequest(void)
 104 {
 105
 106 }