📄 usbhw.lst
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ARM COMPILER V2.53, usbhw 05/09/06 14:20:49 PAGE 1
ARM COMPILER V2.53, COMPILATION OF MODULE usbhw
OBJECT MODULE PLACED IN .\Obj\usbhw.obj
COMPILER INVOKED BY: C:\Keil\ARM\BIN\CA.exe usbhw.c THUMB DEBUG PRINT(.\LST\USBHW.LST) TABS(4) OBJECT(.\Obj\usbhw.obj)
stmt level source
1 /*----------------------------------------------------------------------------
2 * U S B - K e r n e l
3 *----------------------------------------------------------------------------
4 * Name: USBHW.C
5 * Purpose: USB Hardware Layer Module for Philips LPC214x
6 * Version: V1.10
7 *----------------------------------------------------------------------------
8 * This software is supplied "AS IS" without any warranties, express,
9 * implied or statutory, including but not limited to the implied
10 * warranties of fitness for purpose, satisfactory quality and
11 * noninfringement. Keil extends you a royalty-free right to reproduce
12 * and distribute executable files created using this software for use
13 * on Philips LPC2xxx microcontroller devices only. Nothing else gives
14 * you the right to use this software.
15 *
16 * Copyright (c) 2005-2006 Keil Software.
17 *---------------------------------------------------------------------------*/
18
19 #include <LPC214X.H> /* LPC214x definitions */
20
21 #include "type.h"
22
23 #include "usb.h"
24 #include "usbcfg.h"
25 #include "usbreg.h"
26 #include "usbhw.h"
27 #include "usbcore.h"
28 #include "usbuser.h"
29
30
31 #define EP_MSK_CTRL 0x0001 /* Control Endpoint Logical Address Mask */
32 #define EP_MSK_BULK 0xC924 /* Bulk Endpoint Logical Address Mask */
33 #define EP_MSK_INT 0x4492 /* Interrupt Endpoint Logical Address Mask */
34 #define EP_MSK_ISO 0x1248 /* Isochronous Endpoint Logical Address Mask */
35
36
37 #if USB_DMA
DWORD UDCA[USB_EP_NUM] __at USB_RAM_ADR; /* UDCA in USB RAM */
DWORD udca[USB_EP_NUM]; /* UDCA saved values */
DWORD DDMemMap[2]; /* DMA Descriptor Memory Usage */
#endif
45
46
47 /*
48 * Get Endpoint Physical Address
49 * Parameters: EPNum: Endpoint Number
50 * EPNum.0..3: Address
51 * EPNum.7: Dir
52 * Return Value: Endpoint Physical Address
53 */
54
55 DWORD EPAdr (DWORD EPNum) {
56 1 DWORD val;
57 1
58 1 val = (EPNum & 0x0F) << 1;
59 1 if (EPNum & 0x80) {
ARM COMPILER V2.53, usbhw 05/09/06 14:20:49 PAGE 2
60 2 val += 1;
61 2 }
62 1 return (val);
63 1 }
64
65
66 /*
67 * Write Command
68 * Parameters: cmd: Command
69 * Return Value: None
70 */
71
72 void WrCmd (DWORD cmd) {
73 1
74 1 DEV_INT_CLR = CCEMTY_INT;
75 1 CMD_CODE = cmd;
76 1 while ((DEV_INT_STAT & CCEMTY_INT) == 0);
77 1 }
78
79
80 /*
81 * Write Command Data
82 * Parameters: cmd: Command
83 * val: Data
84 * Return Value: None
85 */
86
87 void WrCmdDat (DWORD cmd, DWORD val) {
88 1
89 1 DEV_INT_CLR = CCEMTY_INT;
90 1 CMD_CODE = cmd;
91 1 while ((DEV_INT_STAT & CCEMTY_INT) == 0);
92 1 DEV_INT_CLR = CCEMTY_INT;
93 1 CMD_CODE = val;
94 1 while ((DEV_INT_STAT & CCEMTY_INT) == 0);
95 1 }
96
97
98 /*
99 * Read Command Data
100 * Parameters: cmd: Command
101 * Return Value: Data Value
102 */
103
104 DWORD RdCmdDat (DWORD cmd) {
105 1
106 1 DEV_INT_CLR = CCEMTY_INT | CDFULL_INT;
107 1 CMD_CODE = cmd;
108 1 while ((DEV_INT_STAT & CDFULL_INT) == 0);
109 1 return (CMD_DATA);
110 1 }
111
112
113 /*
114 * USB Initialize Function
115 * Called by the User to initialize USB
116 * Return Value: None
117 */
118
119 void USB_Init (void) {
120 1
121 1 PINSEL1 &= ~0xC000C000;
122 1 PINSEL1 |= 0x40004000; /* Select USB Link, VBUS */
123 1
124 1 PCONP |= 0x80000000; /* Turn On USB PCLK */
125 1
ARM COMPILER V2.53, usbhw 05/09/06 14:20:49 PAGE 3
126 1 /* Configure 48MHz USB Clock; FOsc = 12MHz, M = 4, P = 2 */
127 1 PLL48CFG = 0x23; /* M = 4, P = 2 */
128 1 PLL48CON = PLLCON_PLLE; /* PLL Enable */
129 1 PLL48FEED = 0xAA; /* Feed Sequence 1 */
130 1 PLL48FEED = 0x55; /* Feed Sequence 2 */
131 1
132 1 while ((PLL48STAT & PLLSTAT_PLOCK) == 0); /* Wait for PLL Lock */
133 1
134 1 PLL48CON = PLLCON_PLLE | PLLCON_PLLC; /* PLL Enable & Connect */
135 1 PLL48FEED = 0xAA; /* Feed Sequence 1 */
136 1 PLL48FEED = 0x55; /* Feed Sequence 2 */
137 1
138 1 VICVectAddr0 = (unsigned long)USB_ISR; /* USB Interrupt -> Vector 0 */
139 1 VICVectCntl0 = 0x20 | 22; /* USB Interrupt -> IRQ Slot 0 */
140 1 VICIntEnable = 1 << 22; /* Enable USB Interrupt */
141 1
142 1 DEV_INT_EN = DEV_STAT_INT; /* Enable Device Status Interrupt */
143 1
144 1 #if 1 /* Partial Manual Reset since Automatic Bus Reset is not working */
145 1 USB_Reset();
146 1 USB_SetAddress(0);
147 1 #endif
148 1 }
149
150
151 /*
152 * USB Connect Function
153 * Called by the User to Connect/Disconnect USB
154 * Parameters: con: Connect/Disconnect
155 * Return Value: None
156 */
157
158 void USB_Connect (BOOL con) {
159 1 WrCmdDat(CMD_SET_DEV_STAT, DAT_WR_BYTE(con ? DEV_CON : 0));
160 1 }
161
162
163 /*
164 * USB Reset Function
165 * Called automatically on USB Reset
166 * Return Value: None
167 */
168
169 void USB_Reset (void) {
170 1 #if USB_DMA
DWORD n;
#endif
173 1
174 1 EP_INDEX = 0;
175 1 MAXPACKET_SIZE = USB_MAX_PACKET0;
176 1 EP_INDEX = 1;
177 1 MAXPACKET_SIZE = USB_MAX_PACKET0;
178 1 while ((DEV_INT_STAT & EP_RLZED_INT) == 0);
179 1
180 1 EP_INT_CLR = 0xFFFFFFFF;
181 1 EP_INT_EN = 0xFFFFFFFF ^ USB_DMA_EP;
182 1 DEV_INT_CLR = 0xFFFFFFFF;
183 1 DEV_INT_EN = DEV_STAT_INT | EP_SLOW_INT |
184 1 (USB_SOF_EVENT ? FRAME_INT : 0) |
185 1 (USB_ERROR_EVENT ? ERR_INT : 0);
186 1
187 1 #if USB_DMA
UDCA_HEAD = USB_RAM_ADR;
DMA_REQ_CLR = 0xFFFFFFFF;
EP_DMA_DIS = 0xFFFFFFFF;
EP_DMA_EN = USB_DMA_EP;
ARM COMPILER V2.53, usbhw 05/09/06 14:20:49 PAGE 4
EOT_INT_CLR = 0xFFFFFFFF;
NDD_REQ_INT_CLR = 0xFFFFFFFF;
SYS_ERR_INT_CLR = 0xFFFFFFFF;
DMA_INT_EN = 0x00000007;
DDMemMap[0] = 0x00000000;
DDMemMap[1] = 0x00000000;
for (n = 0; n < USB_EP_NUM; n++) {
udca[n] = 0;
UDCA[n] = 0;
}
#endif
203 1 }
204
205
206 /*
207 * USB Suspend Function
208 * Called automatically on USB Suspend
209 * Return Value: None
210 */
211
212 void USB_Suspend (void) {
213 1 /* Performed by Hardware */
214 1 }
215
216
217 /*
218 * USB Resume Function
219 * Called automatically on USB Resume
220 * Return Value: None
221 */
222
223 void USB_Resume (void) {
224 1 /* Performed by Hardware */
225 1 }
226
227
228 /*
229 * USB Remote Wakeup Function
230 * Called automatically on USB Remote Wakeup
231 * Return Value: None
232 */
233
234 void USB_WakeUp (void) {
235 1
236 1 if (USB_DeviceStatus & USB_GETSTATUS_REMOTE_WAKEUP) {
237 2 WrCmdDat(CMD_SET_DEV_STAT, DAT_WR_BYTE(DEV_CON));
238 2 }
239 1 }
240
241
242 /*
243 * USB Remote Wakeup Configuration Function
244 * Parameters: cfg: Enable/Disable
245 * Return Value: None
246 */
247
248 void USB_WakeUpCfg (BOOL cfg) {
249 1 cfg; /* Not needed */
250 1 }
251
252
253 /*
254 * USB Set Address Function
255 * Parameters: adr: USB Address
256 * Return Value: None
257 */
ARM COMPILER V2.53, usbhw 05/09/06 14:20:49 PAGE 5
258
259 void USB_SetAddress (DWORD adr) {
260 1 WrCmdDat(CMD_SET_ADDR, DAT_WR_BYTE(DEV_EN | adr)); /* Don't wait for next */
261 1 WrCmdDat(CMD_SET_ADDR, DAT_WR_BYTE(DEV_EN | adr)); /* Setup Status Phase */
262 1 }
263
264
265 /*
266 * USB Configure Function
267 * Parameters: cfg: Configure/Deconfigure
268 * Return Value: None
269 */
270
271 void USB_Configure (BOOL cfg) {
272 1
273 1 WrCmdDat(CMD_CFG_DEV, DAT_WR_BYTE(cfg ? CONF_DVICE : 0));
274 1
275 1 REALIZE_EP = 0x00000003;
276 1 while ((DEV_INT_STAT & EP_RLZED_INT) == 0);
277 1 DEV_INT_CLR = EP_RLZED_INT;
278 1 }
279
280
281 /*
282 * Configure USB Endpoint according to Descriptor
283 * Parameters: pEPD: Pointer to Endpoint Descriptor
284 * Return Value: None
285 */
286
287 void USB_ConfigEP (USB_ENDPOINT_DESCRIPTOR *pEPD) {
288 1 DWORD num;
289 1
290 1 num = EPAdr(pEPD->bEndpointAddress);
291 1 REALIZE_EP |= (1 << num);
292 1 EP_INDEX = num;
293 1 MAXPACKET_SIZE = pEPD->wMaxPacketSize;
294 1 while ((DEV_INT_STAT & EP_RLZED_INT) == 0);
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