fw.lst

单片机应用源码,包括各种简单操作

C51 COMPILER V7.06   FW                                                                    08/21/2004 11:22:41 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE FW
OBJECT MODULE PLACED IN fw.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE fw.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //-----------------------------------------------------------------------------
   2          //      File:           fw.c
   3          //      Contents:       Firmware frameworks task dispatcher and device request parser
   4          //                              source.
   5          //
   6          //      Copyright (c) 2002 Cypress Semiconductor, Inc. All rights reserved
   7          //
   8          // $Archive: /USB/ez811/firmware/host/fw.c $
   9          // $Date: 1/23/02 11:25a $
  10          // $Revision: 4 $
  11          //-----------------------------------------------------------------------------
  12          #include "ezusb.h"
  13          #include "ezregs.h"
  14          
  15          //-----------------------------------------------------------------------------
  16          // Random Macros
  17          //-----------------------------------------------------------------------------
  18          #define min(a,b) (((a)<(b))?(a):(b))
  19          #define max(a,b) (((a)>(b))?(a):(b))
  20          
  21          //-----------------------------------------------------------------------------
  22          // Constants
  23          //-----------------------------------------------------------------------------
  24          
  25          //-----------------------------------------------------------------------------
  26          // Global Variables
  27          //-----------------------------------------------------------------------------
  28          volatile BOOL   GotSUD;
  29          BOOL            Rwuen;
  30          BOOL            Selfpwr;
  31          volatile BOOL   Sleep;                                          // Sleep mode enable flag
  32          
  33          WORD    pDeviceDscr;    // Pointer to Device Descriptor; Descriptors may be moved
  34          WORD    pConfigDscr;    
  35          WORD    pStringDscr;    
  36          
  37          //-----------------------------------------------------------------------------
  38          // Prototypes
  39          //-----------------------------------------------------------------------------
  40          void SetupCommand(void);
  41          void TD_Init(void);
  42          void TD_Poll(void);
  43          BOOL TD_Suspend(void);
  44          BOOL TD_Resume(void);
  45          
  46          BOOL DR_GetDescriptor(void);
  47          BOOL DR_SetConfiguration(void);
  48          BOOL DR_GetConfiguration(void);
  49          BOOL DR_SetInterface(void);
  50          BOOL DR_GetInterface(void);
  51          BOOL DR_GetStatus(void);
  52          BOOL DR_ClearFeature(void);
  53          BOOL DR_SetFeature(void);
  54          BOOL DR_VendorCmnd(void);
  55          
C51 COMPILER V7.06   FW                                                                    08/21/2004 11:22:41 PAGE 2   

  56          //-----------------------------------------------------------------------------
  57          // Code
  58          //-----------------------------------------------------------------------------
  59          
  60          // Task dispatcher
  61          void main(void)
  62          {
  63   1              DWORD   i;
  64   1              WORD    offset;
  65   1              DWORD   DevDescrLen;
  66   1              DWORD   j=0;
  67   1              WORD    IntDescrAddr;
  68   1              WORD    ExtDescrAddr;
  69   1      
  70   1              // Initialize Global States
  71   1              Sleep = FALSE;                                  // Disable sleep mode
  72   1              Rwuen = FALSE;                                  // Disable remote wakeup
  73   1              Selfpwr = FALSE;                                // Disable self powered
  74   1              GotSUD = FALSE;                                 // Clear "Got setup data" flag
  75   1      
  76   1              // Initialize user device
  77   1              TD_Init();
  78   1      
  79   1              // The following section of code is used to relocate the descriptor table. 
  80   1              // Since the SUDPTRH and SUDPTRL are assigned the address of the descriptor 
  81   1              // table, the descriptor table must be located in on-part memory.
  82   1              // The 4K demo tools locate all code sections in external memory.
  83   1              // The descriptor table is relocated by the frameworks ONLY if it is found 
  84   1              // to be located in external memory.
  85   1              pDeviceDscr = (WORD)&DeviceDscr;
  86   1              pConfigDscr = (WORD)&ConfigDscr;
  87   1              pStringDscr = (WORD)&StringDscr;
  88   1              if ((WORD)&DeviceDscr & 0xe000)
  89   1              {
  90   2                      IntDescrAddr = INTERNAL_DSCR_ADDR;
  91   2                      ExtDescrAddr = (WORD)&DeviceDscr;
  92   2                      DevDescrLen = (WORD)&UserDscr - (WORD)&DeviceDscr + 2;
  93   2                      for (i = 0; i < DevDescrLen; i++)
  94   2                              *((BYTE xdata *)IntDescrAddr+i) = 0xCD;
  95   2                      for (i = 0; i < DevDescrLen; i++)
  96   2                              *((BYTE xdata *)IntDescrAddr+i) = *((BYTE xdata *)ExtDescrAddr+i);
  97   2                      pDeviceDscr = IntDescrAddr;
  98   2                      offset = (WORD)&DeviceDscr - INTERNAL_DSCR_ADDR;
  99   2                      pConfigDscr -= offset;
 100   2                      pStringDscr -= offset;
 101   2              }
 102   1      
 103   1              EZUSB_IRQ_ENABLE();                             // Enable USB interrupt (INT2)
 104   1              EZUSB_ENABLE_RSMIRQ();                          // Wake-up interrupt
 105   1      
 106   1              // The 8051 is responsible for all USB events, even those that have happened
 107   1              // before this point.  We cannot ignore pending USB interrupts.
 108   1              // The chip will come out of reset with the flags all cleared.
 109   1              //      USBIRQ = 0xff;                          // Clear any pending USB interrupt requests
 110   1              PORTCCFG |= 0xc0;                               // Turn on r/w lines for external memory 
 111   1      
 112   1              USBBAV = USBBAV | 1 & ~bmBREAK; // Disable breakpoints and autovectoring
 113   1              USBIEN |= bmSUDAV | bmSUTOK | bmSUSP | bmURES;  // Enable selected interrupts
 114   1              EA = 1;                                         // Enable 8051 interrupts
 115   1      
 116   1         #ifndef NO_RENUM
 117   1         // Note: at full speed, high speed hosts may take 5 sec to detect device
C51 COMPILER V7.06   FW                                                                    08/21/2004 11:22:41 PAGE 3   

 118   1         EZUSB_Discon(TRUE); // Renumerate
 119   1         #endif
 120   1      
 121   1      
 122   1              CKCON = (CKCON&(~bmSTRETCH)) | FW_STRETCH_VALUE; // Set stretch to 0 (after renumeration)
 123   1      
 124   1              // Task Dispatcher
 125   1              while(TRUE)                                     // Main Loop
 126   1              {
 127   2                      if(GotSUD)                              // Wait for SUDAV
 128   2                      {
 129   3                              SetupCommand();                 // Implement setup command
 130   3                              GotSUD = FALSE;                 // Clear SUDAV flag
 131   3                      }
 132   2      
 133   2                      // Poll User Device
 134   2                      // NOTE: Idle mode stops the processor clock.  There are only two
 135   2                      // ways out of idle mode, the WAKEUP pin, and detection of the USB
 136   2                      // resume state on the USB bus.  The timers will stop and the
 137   2                      // processor will not wake up on any other interrupts.
 138   2                      if (Sleep)
 139   2                          {
 140   3                      if(TD_Suspend())
 141   3                          { 
 142   4                          Sleep = FALSE;                      // Clear the "go to sleep" flag.  Do it here to prevent any race condition b
             -etween wakeup and the next sleep.
 143   4                          do
 144   4                              {
 145   5                                  EZUSB_Susp();                       // Place processor in idle mode.
 146   5                              }
 147   4                      while(!Rwuen && EZUSB_EXTWAKEUP());
 148   4                      // Must continue to go back into suspend if the host has disabled remote wakeup
 149   4                      // *and* the wakeup was caused by the external wakeup pin.
 150   4                      
 151   4                              // 8051 activity will resume here due to USB bus or Wakeup# pin activity.
 152   4                              EZUSB_Resume(); // If source is the Wakeup# pin, signal the host to Resume.             
 153   4                              TD_Resume();
 154   4                          }   
 155   3                          }
 156   2                      TD_Poll();
 157   2              }
 158   1      }
 159          
 160          // Device request parser
 161          void SetupCommand(void)
 162          {
 163   1              void    *dscr_ptr;