C51 COMPILER V6.10  FW2HID                                                                 07/11/2005 20:41:13 PAGE 1   


C51 COMPILER V6.10, COMPILATION OF MODULE FW2HID
OBJECT MODULE PLACED IN .\fw2HID.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\fw2HID.C OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //-----------------------------------------------------------------------------
   2          //	File:		fw2HID.c (fw.c modified by LTH on 20-Aug-01
   3          //	Contents:	Firmware frameworks task dispatcher and device request parser
   4          //				source.
   5          //
   6          //	Copyright (c) 2001 Cypress Semiconductor, Inc. All rights reserved
   7          //-----------------------------------------------------------------------------
   8          #include "ezusb.h"
   9          #include "ezregs.h"
  10          //-----------------------------------------------------------------------------
  11          // Macros
  12          //-----------------------------------------------------------------------------
  13          #define	min(a,b) (((a)<(b))?(a):(b))
  14          #define	max(a,b) (((a)>(b))?(a):(b))
  15          //-----------------------------------------------------------------------------
  16          // Constants
  17          //-----------------------------------------------------------------------------
  18          #define	bmRequestType 	0
  19          #define bRequest		1
  20          #define	wValueL		 	2
  21          #define wValueH			3
  22          #define	wIndexL		 	4
  23          #define wIndexH			5
  24          #define	wLengthL		6
  25          #define wLengthH		7
  26          //
  27          #define GET_REPORT		0x01	// HID Request Types
  28          #define SET_REPORT		0x09
  29          #define GET_IDLE		0x02
  30          #define SET_IDLE		0x0A
  31          //
  32          #define rt_INPUT		1		// HID report types
  33          #define rt_OUTPUT		2
  34          #define rt_FEATURE		3		// all others are 'reserved'
  35          //-----------------------------------------------------------------------------
  36          // Global Variables
  37          //-----------------------------------------------------------------------------
  38          //volatile BOOL	GotSUD;	// set by SUDAV ISR
  39          //volatile BOOL	Sleep;	// Sleep mode enable flag
  40          BOOL	GotSUD;			// set by SUDAV ISR
  41          BOOL	Sleep;			// Sleep mode enable flag
  42          BOOL	Rwuen;
  43          BOOL	Selfpwr;
  44          BYTE	IdleRate;
  45          //-----------------------------------------------------------------------------
  46          // Prototypes
  47          //-----------------------------------------------------------------------------
  48          void SetupCommand(void);
  49          void TD_Init(void);
  50          void TD_Poll(void);
  51          BOOL TD_Suspend(void);
  52          BOOL TD_Resume(void);
  53          
  54          BOOL DR_SetConfiguration(void);
  55          BOOL DR_GetConfiguration(void);
C51 COMPILER V6.10  FW2HID                                                                 07/11/2005 20:41:13 PAGE 2   

  56          BOOL DR_SetInterface(void);
  57          BOOL DR_GetInterface(void);
  58          BOOL DR_GetStatus(void);
  59          BOOL DR_ClearFeature(void);
  60          BOOL DR_SetFeature(void);
  61          
  62          void process_standard_request(void);
  63          void process_class_request(void);
  64          void process_descriptor(void);
  65          
  66          //-----------------------------------------------------------------------------
  67          // Descriptors
  68          //-----------------------------------------------------------------------------
  69          extern code	DeviceDescr,ConfigDescr,String0,String1,String2,HIDDescr;
  70          extern code ReportDescr,ReportDescr_end;
  71          //-----------------------------------------------------------------------------
  72          // Code
  73          //-----------------------------------------------------------------------------
  74          
  75          // Task dispatcher
  76          void main(void)						// power-on reset takes us here
  77          {
  78   1      	// Initialize Global States
  79   1      	Sleep = FALSE;					// Disable sleep mode
  80   1      	Rwuen = FALSE;					// Disable remote wakeup
  81   1      	Selfpwr = FALSE;				// Disable self powered
  82   1      	GotSUD = FALSE;					// Clear "Got setup data" flag
  83   1      
  84   1      	// Initialize user device
  85   1      	TD_Init();
  86   1      
  87   1      	EZUSB_IRQ_ENABLE();					// Enable USB interrupt (INT2)
  88   1      	EZUSB_ENABLE_RSMIRQ();				// Wake-up interrupt
  89   1      	PORTCCFG |= 0xc0;					// Turn on r/w lines for external memory (Keil monitor)
  90   1      	USBBAV = USBBAV | 1 & ~bmBREAK;		// Disable breakpoints and ENABLE autovectoring
  91   1      	USBIEN |= bmSUDAV | bmSUSP | bmURES;	// Enable selected interrupts
  92   1      	EA = 1;								// Enable 8051 interrupts
  93   1      
  94   1          EZUSB_Discon(TRUE); 				// ReNumerate
  95   1       
  96   1      	// Task Dispatcher
  97   1      	while(TRUE)							// Main Loop
  98   1      	{
  99   2      		if(GotSUD)						// Wait for SUDAV
 100   2      		{
 101   3      			SetupCommand();	 			// Service the SETUP request
 102   3        			GotSUD = FALSE;				// Clear SUDAV flag--NOTE: clearing GotSUD after calling SetupCommand()
 103   3      		}								// properly handles multi-packet Get_Descriptor_Report requests
 104   2      										// (which would generate multiple SUDAV interrupts).
 105   2      		if (Sleep)						// set to TRUE by the SUSPEND ISR
 106   2      		    {
 107   3          		if(TD_Suspend())			// hook in periph.c to do stuff before suspending
 108   3          		    { 
 109   4          		    Sleep = FALSE;	   		// Clear the "go to sleep" flag.  Do it here to prevent any race condition b
             -etween wakeup and the next sleep.
 110   4          		    do
 111   4          		        {
 112   5             			    EZUSB_Susp();		// Place processor in idle mode.
 113   5          		        }
 114   4                      while(!Rwuen && EZUSB_EXTWAKEUP());
 115   4                      // Must continue to go back into suspend if the host has disabled remote wakeup
 116   4                      // *and* the wakeup was caused by the external wakeup pin.
C51 COMPILER V6.10  FW2HID                                                                 07/11/2005 20:41:13 PAGE 3   

 117   4                      
 118   4          			// 8051 activity will resume here due to USB bus or Wakeup# pin activity.
 119   4          			EZUSB_Resume();	// If source is the Wakeup# pin, signal the host to Resume.		
 120   4          			TD_Resume();
 121   4          		    }   
 122   3      		    }
 123   2      
 124   2      		TD_Poll();
 125   2      	} // end while(TRUE)
 126   1      }
 127          
 128          // Device request parser
 129          void SetupCommand(void)
 130          {
 131   1      	switch(SETUPDAT[bmRequestType] & 0x60)	// 00-std,20-class,40-vendor,60-reserved.
 132   1      	{
 133   2      		case SETUP_STANDARD_REQUEST:
 134   2      			process_standard_request();
 135   2      		break;
 136   2      		case SETUP_CLASS_REQUEST:
 137   2      			process_class_request();
 138   2      		break;
 139   2      		default:
 140   2       			EZUSB_STALL_EP0();		// we don't handle SETUP_VENDOR_REQUEST or "Reserved".
 141   2      	}
 142   1      EP0CS = bmHS;						// Clear the HS-NAK bit by writing '1' to it
 143   1      }
 144          
 145          void process_standard_request(void)
 146          {
 147   1      	switch(SETUPDAT[bRequest])
 148   1      	{
 149   2      		case SC_GET_DESCRIPTOR:		// *** Get Descriptor
 150   2      			process_descriptor();
 151   2      		break;
 152   2      		case SC_GET_INTERFACE:					// *** Get Interface
 153   2      			DR_GetInterface();
 154   2      		break;
 155   2      		case SC_SET_INTERFACE:					// *** Set Interface
 156   2      			DR_SetInterface();
 157   2      		break;
 158   2      		case SC_SET_CONFIGURATION:				// *** Set Configuration
 159   2      			DR_SetConfiguration();
 160   2      		break;
 161   2      		case SC_GET_CONFIGURATION:				// *** Get Configuration
 162   2      			DR_GetConfiguration();
 163   2      		break;
 164   2      		case SC_GET_STATUS:						// *** Get Status
 165   2      			if(DR_GetStatus())
 166   2      				switch(SETUPDAT[bmRequestType])
 167   2      				{
 168   3      					case GS_DEVICE:				// Device
 169   3      						IN0BUF[0] = ((BYTE)Rwuen << 1) | (BYTE)Selfpwr;
 170   3      						IN0BUF[1] = 0;
 171   3      						EZUSB_SET_EP_BYTES(IN0BUF_ID,2);
 172   3      					break;
 173   3      					case GS_INTERFACE:			// Interface