📄 fw.lst
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C51 COMPILER V7.50 FW 03/02/2008 15:20:03 PAGE 1
C51 COMPILER V7.50, COMPILATION OF MODULE FW
OBJECT MODULE PLACED IN fw.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE fw.c DEBUG OBJECTEXTEND
line level source
1 //-----------------------------------------------------------------------------
2 // File: fw.c
3 // Contents: Firmware frameworks task dispatcher and device request parser
4 //
5 // $Archive: /USB/Examples/FX2LP/bulkext/fw.c $
6 // $Date: 3/23/05 2:53p $
7 // $Revision: 8 $
8 //
9 //
10 //-----------------------------------------------------------------------------
11 // Copyright 2003, Cypress Semiconductor Corporation
12 //-----------------------------------------------------------------------------
13 #include "fx2.h"
14 #include "fx2regs.h"
15 #include "syncdly.h" // SYNCDELAY macro
16
17 //-----------------------------------------------------------------------------
18 // Constants
19 //-----------------------------------------------------------------------------
20 #define DELAY_COUNT 0x9248*8L // Delay for 8 sec at 24Mhz, 4 sec at 48
21 #define _IFREQ 48000 // IFCLK constant for Synchronization Delay
22 #define _CFREQ 48000 // CLKOUT constant for Synchronization Delay
23
24 //-----------------------------------------------------------------------------
25 // Random Macros
26 //-----------------------------------------------------------------------------
27 #define min(a,b) (((a)<(b))?(a):(b))
28 #define max(a,b) (((a)>(b))?(a):(b))
29
30 //-----------------------------------------------------------------------------
31 // Global Variables
32 //-----------------------------------------------------------------------------
33 volatile BOOL GotSUD;
34 BOOL Rwuen;
35 BOOL Selfpwr;
36 volatile BOOL Sleep; // Sleep mode enable flag
37
38 WORD pDeviceDscr; // Pointer to Device Descriptor; Descriptors may be moved
39 WORD pDeviceQualDscr;
40 WORD pHighSpeedConfigDscr;
41 WORD pFullSpeedConfigDscr;
42 WORD pConfigDscr;
43 WORD pOtherConfigDscr;
44 WORD pStringDscr;
45
46 //-----------------------------------------------------------------------------
47 // Prototypes
48 //-----------------------------------------------------------------------------
49 void SetupCommand(void);
50 void TD_Init(void);
51 void TD_Poll(void);
52 BOOL TD_Suspend(void);
53 BOOL TD_Resume(void);
54
55 BOOL DR_GetDescriptor(void);
C51 COMPILER V7.50 FW 03/02/2008 15:20:03 PAGE 2
56 BOOL DR_SetConfiguration(void);
57 BOOL DR_GetConfiguration(void);
58 BOOL DR_SetInterface(void);
59 BOOL DR_GetInterface(void);
60 BOOL DR_GetStatus(void);
61 BOOL DR_ClearFeature(void);
62 BOOL DR_SetFeature(void);
63 BOOL DR_VendorCmnd(void);
64
65 // this table is used by the epcs macro
66 const char code EPCS_Offset_Lookup_Table[] =
67 {
68 0, // EP1OUT
69 1, // EP1IN
70 2, // EP2OUT
71 5, // EP8IN
72 };
73
74 // macro for generating the address of an endpoint's control and status register (EPnCS)
75 #define epcs(EP) (EPCS_Offset_Lookup_Table[(EP & 0x7E) | (EP > 128)] + 0xE6A1)
76
77 //-----------------------------------------------------------------------------
78 // Code
79 //-----------------------------------------------------------------------------
80
81 // Task dispatcher
82 void main(void)
83 {
84 1 DWORD i;
85 1 WORD offset;
86 1 DWORD DevDescrLen;
87 1 DWORD j=0;
88 1 WORD IntDescrAddr;
89 1 WORD ExtDescrAddr;
90 1
91 1 // Initialize Global States
92 1 Sleep = FALSE; // Disable sleep mode
93 1 Rwuen = FALSE; // Disable remote wakeup
94 1 Selfpwr = FALSE; // Disable self powered
95 1 GotSUD = FALSE; // Clear "Got setup data" flag
96 1
97 1 // Initialize user device
98 1 TD_Init();
99 1
100 1 // The following section of code is used to relocate the descriptor table.
101 1 // The frameworks uses SUDPTRH and SUDPTRL to automate the SETUP requests
102 1 // for descriptors. These registers only work with memory locations
103 1 // in the EZ-USB internal RAM. Therefore, if the descriptors are located
104 1 // in external RAM, they must be copied to in internal RAM.
105 1 // The descriptor table is relocated by the frameworks ONLY if it is found
106 1 // to be located in external memory.
107 1 pDeviceDscr = (WORD)&DeviceDscr;
108 1 pDeviceQualDscr = (WORD)&DeviceQualDscr;
109 1 pHighSpeedConfigDscr = (WORD)&HighSpeedConfigDscr;
110 1 pFullSpeedConfigDscr = (WORD)&FullSpeedConfigDscr;
111 1 pStringDscr = (WORD)&StringDscr;
112 1
113 1 // Is the descriptor table in external RAM (> 16Kbytes)? If yes,
114 1 // then relocate.
115 1 // Note that this code only checks if the descriptors START in
116 1 // external RAM. It will not work if the descriptor table spans
117 1 // internal and external RAM.
C51 COMPILER V7.50 FW 03/02/2008 15:20:03 PAGE 3
118 1 if ((WORD)&DeviceDscr & 0xC000)
119 1 {
120 2 // first, relocate the descriptors
121 2 IntDescrAddr = INTERNAL_DSCR_ADDR;
122 2 ExtDescrAddr = (WORD)&DeviceDscr;
123 2 DevDescrLen = (WORD)&UserDscr - (WORD)&DeviceDscr + 2;
124 2 for (i = 0; i < DevDescrLen; i++)
125 2 *((BYTE xdata *)IntDescrAddr+i) = *((BYTE xdata *)ExtDescrAddr+i);
126 2
127 2 // update all of the descriptor pointers
128 2 pDeviceDscr = IntDescrAddr;
129 2 offset = (WORD)&DeviceDscr - INTERNAL_DSCR_ADDR;
130 2 pDeviceQualDscr -= offset;
131 2 pConfigDscr -= offset;
132 2 pOtherConfigDscr -= offset;
133 2 pHighSpeedConfigDscr -= offset;
134 2 pFullSpeedConfigDscr -= offset;
135 2 pStringDscr -= offset;
136 2 }
137 1
138 1 EZUSB_IRQ_ENABLE(); // Enable USB interrupt (INT2)
139 1 EZUSB_ENABLE_RSMIRQ(); // Wake-up interrupt
140 1
141 1 INTSETUP |= (bmAV2EN | bmAV4EN); // Enable INT 2 & 4 autovectoring
142 1
143 1 USBIE |= bmSUDAV | bmSUTOK | bmSUSP | bmURES | bmHSGRANT; // Enable selected interrupts
144 1 EA = 1; // Enable 8051 interrupts
145 1
146 1 #ifndef NO_RENUM
147 1 // Renumerate if necessary. Do this by checking the renum bit. If it
148 1 // is already set, there is no need to renumerate. The renum bit will
149 1 // already be set if this firmware was loaded from an eeprom.
150 1 if(!(USBCS & bmRENUM))
151 1 {
152 2 EZUSB_Discon(TRUE); // renumerate
153 2 }
154 1 #endif
155 1
156 1 // unconditionally re-connect. If we loaded from eeprom we are
157 1 // disconnected and need to connect. If we just renumerated this
158 1 // is not necessary but doesn't hurt anything
159 1 USBCS &=~bmDISCON;
160 1
161 1 CKCON = (CKCON&(~bmSTRETCH)) | FW_STRETCH_VALUE; // Set stretch
162 1
163 1 // clear the Sleep flag.
164 1 Sleep = FALSE;
165 1
166 1 // Task Dispatcher
167 1 while(TRUE) // Main Loop
168 1 {
169 2 // Poll User Device
170 2 TD_Poll();
171 2
172 2 // Check for pending SETUP
173 2 if(GotSUD)
174 2 {
175 3 SetupCommand(); // Implement setup command
176 3 GotSUD = FALSE; // Clear SETUP flag
177 3 }
178 2
179 2 // check for and handle suspend.
C51 COMPILER V7.50 FW 03/02/2008 15:20:03 PAGE 4
180 2 // NOTE: Idle mode stops the processor clock. There are only two
181 2 // ways out of idle mode, the WAKEUP pin, and detection of the USB
182 2 // resume state on the USB bus. The timers will stop and the
183 2 // processor will not wake up on any other interrupts.
184 2 if (Sleep)
185 2 {
186 3 if(TD_Suspend())
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