/*
 * Copyright (C) 2014 Infineon Technologies AG. All rights reserved.
 *
 * Infineon Technologies AG (Infineon) is supplying this software for use with
 * Infineon's microcontrollers.
 * This file can be freely distributed within development tools that are
 * supporting such microcontrollers.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
 * INFINEON SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL,
 * OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
 *
 */

/**
 * @file
 * @date 18 Feb, 2015
 * @version 1.0.0
 *
 * @brief USB demo example
 *
 * The example implements a communication through VCOM with a Host (Computer).
 *
 * History <br>
 *
 * Version 1.0.0 Initial <br>
 *
 */

#include "VirtualSerial.h"

/* Clock configuration */
XMC_SCU_CLOCK_CONFIG_t clock_config =
{
  .syspll_config.p_div = 2,
  .syspll_config.n_div = 80,
  .syspll_config.k_div = 4,
  .syspll_config.mode = XMC_SCU_CLOCK_SYSPLL_MODE_NORMAL,
  .syspll_config.clksrc = XMC_SCU_CLOCK_SYSPLLCLKSRC_OSCHP,
  .enable_oschp = true,
  .calibration_mode = XMC_SCU_CLOCK_FOFI_CALIBRATION_MODE_FACTORY,
  .fsys_clksrc = XMC_SCU_CLOCK_SYSCLKSRC_PLL,
  .fsys_clkdiv = 1,
  .fcpu_clkdiv = 1,
  .fccu_clkdiv = 1,
  .fperipheral_clkdiv = 1
};


void SystemCoreClockSetup(void)
{
  /* Setup settings for USB clock */
  XMC_SCU_CLOCK_Init(&clock_config);

  XMC_SCU_CLOCK_EnableUsbPll();
  XMC_SCU_CLOCK_StartUsbPll(2, 64);
  XMC_SCU_CLOCK_SetUsbClockDivider(4);
  XMC_SCU_CLOCK_SetUsbClockSource(XMC_SCU_CLOCK_USBCLKSRC_USBPLL);
  XMC_SCU_CLOCK_EnableClock(XMC_SCU_CLOCK_USB);

  SystemCoreClockUpdate();
}

/**
 * Main program entry point. This routine configures the hardware required by
 * the application, then enters a loop to run the application tasks in sequence.
 */
int main(void)
{
  uint16_t Bytes = 0;

  USB_Init();

  while (1)
  {
	/* Check if data received */
	Bytes = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface);

    if(Bytes)
    {
      /* Send data back to the host */
      CDC_Device_SendByte(&VirtualSerial_CDC_Interface, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
    }

    CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
  }
}