?? usb_drv.lst
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C51 COMPILER V7.06 USB_DRV 05/05/2005 12:12:02 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE USB_DRV
OBJECT MODULE PLACED IN usb_drv.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE lib_mcu\usb\usb_drv.c OPTIMIZE(7,SPEED) BROWSE INCDIR(.\modules\system;.\;.
-\;.\lib_refd) DEFINE(KEIL) DEBUG OBJECTEXTEND PRINT(.\usb_drv.lst) OBJECT(usb_drv.obj)
stmt level source
1 /*C**************************************************************************
2 * NAME: usb_drv.c
3 *----------------------------------------------------------------------------
4 * Copyright (c) 2003 Atmel.
5 *----------------------------------------------------------------------------
6 * RELEASE: snd1c-refd-nf-4_0_3
7 * REVISION: 1.12
8 *----------------------------------------------------------------------------
9 * PURPOSE:
10 * This file contains the USB driver routines
11 *
12 * NOTES:
13 * Driver Configuration (see config.h):
14 * - VENDOR_ID enum vendor ID delivered by USB organisation
15 * - PRODUCT_ID enum product number
16 * - RELEASE_NUMBER enum release number
17 * - USB_MANUFACTURER_NAME mass storage manufacturer string (unicode)
18 * - USB_MN_LENGTH mass storage manufacturer string length
19 * - USB_PRODUCT_NAME mass storage product name string (unicode)
20 * - USB_PN_LENGTH mass storage product name string length
21 * - USB_SERIAL_NUMBER mass storage product serial nb string (unicode)
22 * - USB_SN_LENGTH mass storage product serial nb string length
23 *****************************************************************************/
24
25 /*_____ I N C L U D E S ____________________________________________________*/
26
27 #include "config.h" /* system configuration */
28 #include "usb_drv.h" /* usb driver definition */
29
30
31 /*_____ M A C R O S ________________________________________________________*/
32
33
34 /*_____ D E F I N I T I O N ________________________________________________*/
35
36 code struct usb_st_device_descriptor usb_device_descriptor =
37 {
38 sizeof(usb_device_descriptor), DEVICE, 0x1001, 0, 0, 0, EP_CONTROL_LENGTH,
39 VENDOR_ID, PRODUCT_ID, RELEASE_NUMBER, MAN_INDEX, PROD_INDEX, SN_INDEX, 1
40 };
41
42 code struct usb_st_manufacturer usb_manufacturer =
43 {
44 sizeof(usb_manufacturer), STRING,
45 USB_MANUFACTURER_NAME
46 };
47
48 code struct usb_st_product usb_product =
49 {
50 sizeof(usb_product), STRING,
51 USB_PRODUCT_NAME
52 };
53
54 code struct usb_st_serial_number usb_serial_number =
C51 COMPILER V7.06 USB_DRV 05/05/2005 12:12:02 PAGE 2
55 {
56 sizeof(usb_serial_number), STRING,
57 USB_SERIAL_NUMBER
58 };
59
60 code struct usb_st_language_descriptor usb_language =
61 {
62 sizeof(usb_language), STRING, 0x0904
63 };
64
65 code struct
66 {
67 struct usb_st_configuration_descriptor cfg;
68 struct usb_st_interface_descriptor ifc;
69 struct usb_st_endpoint_descriptor ep1;
70 struct usb_st_endpoint_descriptor ep2;
71 }
72 usb_configuration =
73 {
74 { 9, CONFIGURATION, sizeof(usb_configuration) << 8, 1, 1, 0, USB_CONFIG_BUSPOWERED, 0x32},
75 { 9, INTERFACE, 0, 0, 2, 0x08, 0x06, 0x50, 0 },
76 { 7, ENDPOINT, 0x81, 0x02, EP_IN_LENGTH << 8, 0 },
77 { 7, ENDPOINT, 0x02, 0x02, EP_OUT_LENGTH << 8, 0 }
78 };
79
80 static bdata bit zlp;
81 static idata Byte endpoint_status[3];
82
83 static idata Byte *pbuffer;
84 static idata Byte bmRequestType;
85
86 /*_____ D E C L A R A T I O N ______________________________________________*/
87
88 extern void usb_mass_storage_reset (void);
89 extern void usb_mass_storage_get_lun (void);
90
91 static void usb_get_descriptor (void);
92 static Byte* send_ep0_packet (Byte *, Byte);
93 static void usb_read_request (void);
94 static void usb_set_address (void);
95 static void usb_set_configuration (void);
96 static void usb_clear_feature (void);
97 static void usb_set_feature (void);
98 static void usb_get_status (void);
99 static void usb_get_configuration (void);
100
101
102 /*F**************************************************************************
103 * NAME: usb_init
104 *----------------------------------------------------------------------------
105 * PARAMS:
106 *
107 * return:
108 *----------------------------------------------------------------------------
109 * PURPOSE:
110 * This function initializes the USB controller and resets the endpoints FIFOs.
111 *----------------------------------------------------------------------------
112 * EXAMPLE:
113 *----------------------------------------------------------------------------
114 * NOTE:
115 *----------------------------------------------------------------------------
116 * REQUIREMENTS:
C51 COMPILER V7.06 USB_DRV 05/05/2005 12:12:02 PAGE 3
117 *****************************************************************************/
118 void usb_init (void)
119 {
120 1 Usb_enable(); /* enable USB */
121 1 UEPRST = 0x07; /* Reset EP 0, 1 and 2 */
122 1 UEPRST = 0x00;
123 1 endpoint_status[EP_CONTROL] = 0x00;
124 1 endpoint_status[EP_IN] = 0x00;
125 1 endpoint_status[EP_OUT] = 0x00;
126 1 Usb_select_ep(EP_CONTROL); /* control endpoint config */
127 1 UEPCONX = CONTROL;
128 1 }
129
130
131 /*F**************************************************************************
132 * NAME: usb_ep_init
133 *----------------------------------------------------------------------------
134 * PARAMS:
135 *
136 * return:
137 *----------------------------------------------------------------------------
138 * PURPOSE:
139 * This function configures the endpoints.
140 *----------------------------------------------------------------------------
141 * EXAMPLE:
142 *----------------------------------------------------------------------------
143 * NOTE:
144 *----------------------------------------------------------------------------
145 * REQUIREMENTS:
146 *****************************************************************************/
147 void usb_ep_init (void)
148 {
149 1 Usb_select_ep(EP_CONTROL);
150 1 UEPCONX = CONTROL;
151 1 Usb_select_ep(EP_IN); /* endpoints configuration */
152 1 UEPCONX = BULK_IN ;
153 1 Usb_select_ep(EP_OUT);
154 1 UEPCONX = BULK_OUT;
155 1 UEPRST = 0x07;
156 1 UEPRST = 0x00;
157 1 }
158
159
160 /*F**************************************************************************
161 * NAME: usb_send_ep0_packet
162 *----------------------------------------------------------------------------
163 * PARAMS:
164 * *tbuf: address of the first data to send
165 * data_length: number of bytes to send
166 *
167 * return: address of the next byte to send
168 *----------------------------------------------------------------------------
169 * PURPOSE:
170 * This function sends the data over the default control endpoint.
171 *----------------------------------------------------------------------------
172 * EXAMPLE:
173 *----------------------------------------------------------------------------
174 * NOTE:
175 *----------------------------------------------------------------------------
176 * REQUIREMENTS:
177 *****************************************************************************/
178 Byte* send_ep0_packet (Byte *tbuf, Byte data_length)
C51 COMPILER V7.06 USB_DRV 05/05/2005 12:12:02 PAGE 4
179 {
180 1 Byte i;
181 1
182 1 Usb_select_ep(EP_CONTROL);
183 1 for (i = data_length; i != 0 ; i--, tbuf++)
184 1 {
185 2 Usb_write_byte(*tbuf);
186 2 }
187 1 Usb_set_TXRDY(); /* Send packet */
188 1 return tbuf;
189 1 }
190
191
192 /*F**************************************************************************
193 * NAME: usb_enumeration_process
194 *----------------------------------------------------------------------------
195 * PARAMS:
196 *
197 * return:
198 *----------------------------------------------------------------------------
199 * PURPOSE:
200 * This function manages the enumeration process
201 *----------------------------------------------------------------------------
202 * EXAMPLE:
203 *----------------------------------------------------------------------------
204 * NOTE:
205 *----------------------------------------------------------------------------
206 * REQUIREMENTS:
207 *****************************************************************************/
208 void usb_enumeration_process (void)
209 {
210 1 Usb_select_ep(EP_CONTROL);
211 1 usb_read_request();
212 1 }
213
214
215 /*F**************************************************************************
216 * NAME: usb_read_request
217 *----------------------------------------------------------------------------
218 * PARAMS:
219 *
220 * return:
221 *----------------------------------------------------------------------------
222 * PURPOSE:
223 * This function reads the SETUP request sent to the default control endpoint
224 * and the appropriate function. When exiting of the usb_read_request
225 * function, the device is ready to manage the next request.
226 *----------------------------------------------------------------------------
227 * EXAMPLE:
228 *----------------------------------------------------------------------------
229 * NOTE: list of supported requests:
230 * GET_DESCRIPTOR
231 * GET_CONFIGURATION
232 * SET_ADDRESS
233 * SET_CONFIGURATION
234 * CLEAR_FEATURE
235 * SET_FEATURE
236 * GET_STATUS
237 * GET_MAX_LUN
238 * MASS_STORAGE_RESET
239 *----------------------------------------------------------------------------
240 * REQUIREMENTS:
C51 COMPILER V7.06 USB_DRV 05/05/2005 12:12:02 PAGE 5
241 *****************************************************************************/
242 void usb_read_request (void)
243 {
244 1 bmRequestType = Usb_read_byte(); /* read bmRequestType */
245 1
246 1 switch (Usb_read_byte()) /* test the bRequest value */
247 1 {
248 2 case GET_DESCRIPTOR:
249 2 usb_get_descriptor();
250 2 break;
251 2 case GET_CONFIGURATION:
252 2 usb_get_configuration();
253 2 break;
254 2 case SET_ADDRESS:
255 2 usb_set_address();
256 2 break;
257 2 case SET_CONFIGURATION:
258 2 usb_set_configuration();
259 2 break;
260 2 case CLEAR_FEATURE:
261 2 usb_clear_feature();
262 2 break;
263 2 case SET_FEATURE:
264 2 usb_set_feature();
265 2 break;
266 2 case GET_STATUS:
267 2 usb_get_status();
268 2 break;
269 2 case GET_MAX_LUN:
270 2 usb_mass_storage_get_lun();
271 2 break;
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