?? periph.lst
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C51 COMPILER V5.50, PERIPH 26/07/00 13:53:27 PAGE 1
DOS C51 COMPILER V5.50, COMPILATION OF MODULE PERIPH
OBJECT MODULE PLACED IN PERIPH.OBJ
COMPILER INVOKED BY: C:\C51\BIN\C51.EXE PERIPH.C DB OE MODDP2
stmt level source
1 #pragma NOIV // Do not generate interrupt vectors
2 //-----------------------------------------------------------------------------
3 // File: periph.c
4 // Contents: Hooks required to implement USB peripheral function.
5 //
6 // Copyright (c) 1997 AnchorChips, Inc. All rights reserved
7 // Adapted for use with HIDs by Jan Axelson (jan@lvr.com)
8 //-----------------------------------------------------------------------------
9 #include <ezusb.h>
10 #include <ezregs.h>
11
12 extern BOOL GotSUD; // Received setup data flag
13 extern BOOL Sleep;
14 extern BOOL Rwuen;
15 extern BOOL Selfpwr;
16
17 BYTE Configuration; // Current configuration
18 BYTE AlternateSetting; // Alternate settings
19 BYTE suspCount;
20
21 // HID code start
22 BYTE InReportBytes;
23 void *dscr_ptr;
24 // HID code end
25
26 //-----------------------------------------------------------------------------
27 // Task Dispatcher hooks
28 // The following hooks are called by the task dispatcher.
29 //-----------------------------------------------------------------------------
30
31 void TD_Init(void) // Called once at startup
32 {
33 1 // Enable endpoints 0-7 IN and OUT
34 1 //IN07VAL |= bmEP1 + bmEP2 + bmEP3 + bmEP4 + bmEP5 + bmEP6 + bmEP7;
35 1 //OUT07VAL |= bmEP1 + bmEP2 + bmEP3 + bmEP4 + bmEP5 + bmEP6 + bmEP7;
36 1
37 1 //HID code start
38 1 //Comment out the above two lines and enable only the endpoints used by the HID interface.
39 1 IN07VAL |= bmEP1 ;
40 1 OUT07VAL |= bmEP2;
41 1 //HID code end
42 1
43 1 // Enable interrupts for the OUT endpoints
44 1 // OUT07IEN |= bmEP1 + bmEP2 + bmEP3 + bmEP4 + bmEP5 + bmEP6 + bmEP7;
45 1
46 1 //HID code start
47 1 //Comment out the above line and enable interrupts for the endpoints used by the HID interface.
48 1 // Enable interrrupts for Endpoint 2 OUT
49 1 OUT07IEN |= bmEP2;
50 1 // Enable interrupts for Endpoint 1 IN
51 1 IN07IEN |= bmEP1;
52 1
53 1 //HID code end
54 1
55 1 suspCount = 1;
56 1
57 1 OEA = 0xFF;
58 1
59 1 Rwuen = TRUE; // Enable remote-wakeup
C51 COMPILER V5.50, PERIPH 26/07/00 13:53:27 PAGE 2
60 1 }
61
62 void TD_Poll(void) // Called repeatedly while the device is idle
63 {
64 1 }
65
66 BOOL TD_Suspend(void) // Called before the device goes into suspend mode
67 {
68 1 return(TRUE);
69 1 }
70
71 BOOL TD_Resume(void) // Called after the device resumes
72 {
73 1 return(TRUE);
74 1 }
75
76 //-----------------------------------------------------------------------------
77 // Device Request hooks
78 // The following hooks are called by the end point 0 device request parser.
79 //-----------------------------------------------------------------------------
80
81 BOOL DR_GetDescriptor(void)
82 {
83 1 return(TRUE);
84 1 }
85
86 BOOL DR_SetConfiguration(void) // Called when a Set Configuration command is received
87 {
88 1 Configuration = SETUPDAT[2];
89 1 return(TRUE); // Handled by user code
90 1 }
91
92 BOOL DR_GetConfiguration(void) // Called when a Get Configuration command is received
93 {
94 1 IN0BUF[0] = Configuration;
95 1 EZUSB_SET_EP_BYTES(IN0BUF_ID,1);
96 1 return(TRUE); // Handled by user code
97 1 }
98
99 BOOL DR_SetInterface(void) // Called when a Set Interface command is received
100 {
101 1 AlternateSetting = SETUPDAT[2];
102 1 return(TRUE); // Handled by user code
103 1 }
104
105 BOOL DR_GetInterface(void) // Called when a Set Interface command is received
106 {
107 1 IN0BUF[0] = AlternateSetting;
108 1 EZUSB_SET_EP_BYTES(IN0BUF_ID,1);
109 1 return(TRUE); // Handled by user code
110 1 }
111
112 BOOL DR_GetStatus(void)
113 {
114 1 return(TRUE);
115 1 }
116
117 BOOL DR_ClearFeature(void)
118 {
119 1 return(TRUE);
120 1 }
121
122 BOOL DR_SetFeature(void)
123 {
124 1 return(TRUE);
125 1 }
C51 COMPILER V5.50, PERIPH 26/07/00 13:53:27 PAGE 3
126
127 #define EZUSB_UNARM_EP(ep_id) EPIO[ep_id].cntrl = bmEPBUSY
128
129 BOOL DR_VendorCmnd(void)
130 {
131 1 return(TRUE);
132 1 }
133
134 //-----------------------------------------------------------------------------
135 // USB Interrupt Handlers
136 // The following functions are called by the USB interrupt jump table.
137 //-----------------------------------------------------------------------------
138
139
140 // Setup Data Available Interrupt Handler
141 void ISR_Sudav(void) interrupt 0
142 {
143 1 GotSUD = TRUE; // Set flag
144 1
145 1
146 1 EZUSB_IRQ_CLEAR();
147 1 USBIRQ = bmSUDAV; // Clear SUDAV IRQ
148 1 }
149
150 // Setup Token Interrupt Handler
151 void ISR_Sutok(void) interrupt 0
152 {
153 1 EZUSB_IRQ_CLEAR();
154 1 USBIRQ = bmSUTOK; // Clear SUTOK IRQ
155 1 }
156
157 void ISR_Sof(void) interrupt 0
158 {
159 1 EZUSB_IRQ_CLEAR();
160 1 USBIRQ = bmSOF; // Clear SOF IRQ
161 1 }
162
163 void ISR_Ures(void) interrupt 0
164 {
165 1 // Arm all of the OUT endpoints so they can accept data
166 1 // EPIO[OUT1BUF_ID].bytes = 0;
167 1
168 1 // HID code start
169 1 // Arm the HID endpoints by loading the byte count registers.
170 1 // Get the number of bytes the In report will send.
171 1 // This information is in Report Count in the report descriptor,
172 1 // and in Report_Count_In_Value in the REPORTDSCR structure.
173 1 // (Assumes that ReportSize (specified in the report descriptor) = 8).
174 1 // To do: calculate the number of bytes to send for reports with any ReportSize.
175 1 REPORTDSCR *rdp;
176 1 dscr_ptr = (REPORTDSCR xdata *) pReportDscr;
177 1 rdp = dscr_ptr;
178 1 InReportBytes = rdp -> Report_Count_In_Value;
179 1 EPIO[IN1BUF_ID].bytes = InReportBytes;
180 1 // The value for Out reports can be anything.
181 1 EPIO[OUT2BUF_ID].bytes = 64;
182 1 // HID code end
183 1
184 1 // EPIO[OUT3BUF_ID].bytes = 0;
185 1 // EPIO[OUT4BUF_ID].bytes = 0;
186 1 // EPIO[OUT5BUF_ID].bytes = 0;
187 1 // EPIO[OUT6BUF_ID].bytes = 0;
188 1 // EPIO[OUT7BUF_ID].bytes = 0;
189 1
190 1 EZUSB_IRQ_CLEAR();
191 1 USBIRQ = bmURES; // Clear URES IRQ
C51 COMPILER V5.50, PERIPH 26/07/00 13:53:27 PAGE 4
192 1 }
193
194 void ISR_IBN(void) interrupt 0
195 {
196 1 // ISR for the IN Bulk NAK (IBN) interrupt.
197 1 }
198
199 void ISR_Susp(void) interrupt 0
200 {
201 1 Sleep = TRUE;
202 1
203 1 EZUSB_IRQ_CLEAR();
204 1 USBIRQ = bmSUSP;
205 1 }
206
207 void ISR_Ep0in(void) interrupt 0
208 {
209 1 }
210
211 void ISR_Ep0out(void) interrupt 0
212 {
213 1 }
214
215 void ISR_Ep1in(void) interrupt 0
216 {
217 1 // HID code start
218 1 // The HID interface uses Endpoint 1 IN.
219 1 // When an IN transfer completes, rearm Endpoint 1.
220 1 IN1BC = InReportBytes;
221 1 // clear the IRQ
222 1 EZUSB_IRQ_CLEAR();
223 1 IN07IRQ = bmEP1;
224 1 //HID code end
225 1 }
226
227 void ISR_Ep1out(void) interrupt 0
228 {
229 1 int i;
230 1
231 1 //
232 1 // workaround to cover the case where the host thinks the
233 1 // previous IN completed but EZ-USB didn't receive a valid
234 1 // handshake (i.e. the ACK was scrambled). If we have
235 1 // received new OUT data (which we have, because we're in this
236 1 // ISR) but the corresponding IN endpoint is still busy, then
237 1 // we know we missed the handshake. The solution is to flip
238 1 // the data toggle and proceed with the new data.
239 1 //
240 1 if (EPIO[IN1BUF_ID].cntrl & bmEPBUSY)
241 1 {
242 2 TOGCTL = 0x08 | IN1BUF_ID;
243 2 WRITEDELAY();
244 2 if (TOGCTL & 0x80)
245 2 TOGCTL |= 0x20;
246 2 else
247 2 TOGCTL |= 0x40;
248 2 }
249 1
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