/*------------------------------------------------------------------------------
main.c

Version:
March 22, 2005 - Version 1.0 - Initial Release.

Description:  USB Reference Design - Flash Disk Application (read only)
This reference design enumerates as a USB flash disk making use of the USB Mass 
Storage Device Class driver.  It will appear as an available drive on the system
with read only content.

This reference design is intended to demonstrate USB functionality and provide
example code on using the USB module within the uPSD34xx.

Supported platforms:
DK3400

Notes:
(1) It is important to modify the FREQ_OSC setting in upsd3400_hardware.h
to match the oscillator frequency on the board being used.
(2) It is also important to change, as appropriate, the PLL setting in 
the USBInitialize() function to match the MCU's oscillator in order for
USB to work properly.



Copyright (c) 2005 STMicroelectronics Inc.

This example demo code is provided as is and has no warranty,
implied or otherwise.  You are free to use/modify any of the provided
code at your own risk in your applications with the expressed limitation
of liability (see below) so long as your product using the code contains
at least one uPSD product (device).

LIMITATION OF LIABILITY:   NEITHER STMicroelectronics NOR ITS VENDORS OR 
AGENTS SHALL BE LIABLE FOR ANY LOSS OF PROFITS, LOSS OF USE, LOSS OF DATA,
INTERRUPTION OF BUSINESS, NOR FOR INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY KIND WHETHER UNDER THIS AGREEMENT OR
OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
------------------------------------------------------------------------------*/



#pragma NOAREGS

#include "upsd3400.h"
#include "upsd3400_hardware.h"
#include "upsd3400_usb.h"
#include "upsd3400_usb_desc.h"
#include "upsd3400_upsd_usb.h"
#include "upsd3400_usb_app.h"

#define RemoteWakeupEnable   0

//default values for file system, 2048 Bytes, user specific !!!
extern code unsigned char DefaultDiskInit[2048];

pdata unsigned char   PageDataBuffer[64];
data  unsigned char   BankCurrent;


xdata PSD_REGS UPSD_xreg _at_ PSD_REG_ADDR;
data unsigned char ReconnectDemand;
extern unsigned char data usbState;
static data unsigned int  g_debugUSB_INT_CNT = 0;

extern unsigned char volatile gbBulkPipeStage;

const unsigned char code RED_LED_PWM_TABLE[45] =
 {
  0,0,0,0,0,0,0,0,0,0,0,1,2,4,6,8,9,11,13,15,17,19,21,24,26,29,38,41,46,49,53,58,63,69,77,85,95,109,127,159,255,255,255,255,255
 }
  ;

data unsigned char REDLED_Pointer;

bit RED_LED_UPDOWN_FLAG;
data unsigned char REDLED_PWM;
data unsigned char REDLED;
data unsigned int  REDCNT;


extern unsigned char USB_ISR_Counter;
unsigned char Aux_USB_ISR_Counter;


void T0ISR (void) interrupt TF0_VECTOR using 1
/******************************************************************************
 Function   : void T0ISR ()
 Parameters : (void)
 Description: LED effects routine
 ******************************************************************************/
 {
  REDLED_PWM+=5;
  if (REDLED_PWM<=REDLED)
   {
    UPSD_xreg.DATAOUT_D  = 2;
   }
  else
   {
    UPSD_xreg.DATAOUT_D  = 0;
   }


  REDCNT-= 1;
  if (REDCNT == 0)
   {
    REDCNT = 300;

/* ***** RED LED service ***** */
    if (RED_LED_UPDOWN_FLAG)
     {
      REDLED_Pointer++;
      if (REDLED_Pointer >= sizeof(RED_LED_PWM_TABLE)-1)
       {
        RED_LED_UPDOWN_FLAG = ~RED_LED_UPDOWN_FLAG;
        REDLED_Pointer = sizeof(RED_LED_PWM_TABLE)-1;
       }
     }
    else
     {
      REDLED_Pointer--;
      if (REDLED_Pointer == 0) RED_LED_UPDOWN_FLAG = ~RED_LED_UPDOWN_FLAG;
     }
    REDLED = ~RED_LED_PWM_TABLE[REDLED_Pointer];
   }
 }


void main(void)
/******************************************************************************
 Function   : void main()
 Parameters : (void)
 Description: The main routine
 ******************************************************************************/
 {
  data int i;

  ReconnectDemand = 0;

// Copy the initial disk Dir&FAT content now
  for (i=0;i<sizeof(DefaultDiskInit);i++)
   {
    ((char volatile xdata *) 0x8000)[i] = ((char volatile code *) DefaultDiskInit)[i];
   }

  UsbInitialize();

// Enable DK3420_Lite_USB_PullUp
  UPSD_xreg.DIRECTION_C |=128;               // PC7=Out
  UPSD_xreg.DRIVE_C     &=127;               // PC7=Push/Pull
  UPSD_xreg.DATAOUT_C   |=128;               // PC7=1


  UPSD_xreg.DIRECTION_D |= 2;                // RED LED ON
  UPSD_xreg.OUTENABLE_D |= 2;
  UPSD_xreg.DATAOUT_D    = 0;

  REDLED_Pointer = 1;                        // RED LED EFFECT
  RED_LED_UPDOWN_FLAG = 0;
  REDLED_PWM = 0;
  REDLED = 128;
  REDCNT = 32;

//Timer0, blinking LEDs and SW PWM service
  TR0   = 0;                                 // stop timer 0
  TMOD &= 0xF0;                              // clear timer 0 mode bits
  TMOD |= 0x02;                              // put timer 0 into right mode
  TH0   = -128;                              // 12MHz/12/-x

  ET0   = 1;                                 // enable timer 0 interrupt
  TR0   = 1;                                 // start timer 0


  while (1)
   {

   }
 }



/* *************************************************************************
  ***                                                                      ***
  **                         *** End of File ***                            **
  ***                                                                      ***
   *************************************************************************  */