📄 usb_drv.lst
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C51 COMPILER V7.02a USB_DRV 09/13/2007 11:53:01 PAGE 1
C51 COMPILER V7.02a, 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 V7.02a USB_DRV 09/13/2007 11:53:01 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 V7.02a USB_DRV 09/13/2007 11:53:01 PAGE 3
117 *****************************************************************************/
118 void usb_init (void)
119 {
120 1
121 1
122 1
123 1 Usb_enable(); /* enable USB */
124 1 UEPRST = 0x07; /* Reset EP 0, 1 and 2 */
125 1 UEPRST = 0x00;
126 1 endpoint_status[EP_CONTROL] = 0x00;
127 1 endpoint_status[EP_IN] = 0x00;
128 1 endpoint_status[EP_OUT] = 0x00;
129 1 Usb_select_ep(EP_CONTROL); /* control endpoint config */
130 1 UEPCONX = CONTROL;
131 1
132 1
133 1
134 1 }
135
136
137 /*F**************************************************************************
138 * NAME: usb_ep_init
139 *----------------------------------------------------------------------------
140 * PARAMS:
141 *
142 * return:
143 *----------------------------------------------------------------------------
144 * PURPOSE:
145 * This function configures the endpoints.
146 *----------------------------------------------------------------------------
147 * EXAMPLE:
148 *----------------------------------------------------------------------------
149 * NOTE:
150 *----------------------------------------------------------------------------
151 * REQUIREMENTS:
152 *****************************************************************************/
153 void usb_ep_init (void)
154 {
155 1 Usb_select_ep(EP_CONTROL);
156 1 UEPCONX = CONTROL;
157 1 Usb_select_ep(EP_IN); /* endpoints configuration */
158 1 UEPCONX = BULK_IN ;
159 1 Usb_select_ep(EP_OUT);
160 1 UEPCONX = BULK_OUT;
161 1 UEPRST = 0x07;
162 1 UEPRST = 0x00;
163 1 }
164
165
166 /*F**************************************************************************
167 * NAME: usb_send_ep0_packet
168 *----------------------------------------------------------------------------
169 * PARAMS:
170 * *tbuf: address of the first data to send
171 * data_length: number of bytes to send
172 *
173 * return: address of the next byte to send
174 *----------------------------------------------------------------------------
175 * PURPOSE:
176 * This function sends the data over the default control endpoint.
177 *----------------------------------------------------------------------------
178 * EXAMPLE:
C51 COMPILER V7.02a USB_DRV 09/13/2007 11:53:01 PAGE 4
179 *----------------------------------------------------------------------------
180 * NOTE:
181 *----------------------------------------------------------------------------
182 * REQUIREMENTS:
183 *****************************************************************************/
184 Byte *send_ep0_packet (Byte *tbuf, Byte data_length)
185 {
186 1 Byte i;
187 1
188 1 Usb_select_ep(EP_CONTROL);
189 1 for (i = data_length; i != 0 ; i--, tbuf++)
190 1 {
191 2 Usb_write_byte(*tbuf);
192 2 }
193 1 Usb_set_TXRDY(); /* Send packet */
194 1 return tbuf;
195 1 }
196
197
198 /*F**************************************************************************
199 * NAME: usb_enumeration_process
200 *----------------------------------------------------------------------------
201 * PARAMS:
202 *
203 * return:
204 *----------------------------------------------------------------------------
205 * PURPOSE:
206 * This function manages the enumeration process
207 *----------------------------------------------------------------------------
208 * EXAMPLE:
209 *----------------------------------------------------------------------------
210 * NOTE:
211 *----------------------------------------------------------------------------
212 * REQUIREMENTS:
213 *****************************************************************************/
214 void usb_enumeration_process (void)
215 {
216 1 Usb_select_ep(EP_CONTROL);
217 1 usb_read_request();
218 1 }
219
220
221 /*F**************************************************************************
222 * NAME: usb_read_request
223 *----------------------------------------------------------------------------
224 * PARAMS:
225 *
226 * return:
227 *----------------------------------------------------------------------------
228 * PURPOSE:
229 * This function reads the SETUP request sent to the default control endpoint
230 * and the appropriate function. When exiting of the usb_read_request
231 * function, the device is ready to manage the next request.
232 *----------------------------------------------------------------------------
233 * EXAMPLE:
234 *----------------------------------------------------------------------------
235 * NOTE: list of supported requests:
236 * GET_DESCRIPTOR
237 * GET_CONFIGURATION
238 * SET_ADDRESS
239 * SET_CONFIGURATION
240 * CLEAR_FEATURE
C51 COMPILER V7.02a USB_DRV 09/13/2007 11:53:01 PAGE 5
241 * SET_FEATURE
242 * GET_STATUS
243 * GET_MAX_LUN
244 * MASS_STORAGE_RESET
245 *----------------------------------------------------------------------------
246 * REQUIREMENTS:
247 *****************************************************************************/
248 void usb_read_request (void)
249 {
250 1 bmRequestType = Usb_read_byte(); /* read bmRequestType */
251 1
252 1 switch (Usb_read_byte()) /* test the bRequest value */
253 1 {
254 2 case GET_DESCRIPTOR:
255 2 usb_get_descriptor();
256 2 break;
257 2 case GET_CONFIGURATION:
258 2 usb_get_configuration();
259 2 break;
260 2 case SET_ADDRESS:
261 2 usb_set_address();
262 2 break;
263 2 case SET_CONFIGURATION:
264 2 usb_set_configuration();
265 2 break;
266 2 case CLEAR_FEATURE:
267 2 usb_clear_feature();
268 2 break;
269 2 case SET_FEATURE:
270 2 usb_set_feature();
271 2 break;
272 2 case GET_STATUS:
273 2 usb_get_status();
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