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[proxmark3-svn] / common / usb_cdc.c
1 /*
2 * at91sam7s USB CDC device implementation
3 *
4 * Copyright (c) 2012, Roel Verdult
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the copyright holders nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * based on the "Basic USB Example" from ATMEL (doc6123.pdf)
30 *
31 * @file usb_cdc.c
32 * @brief
33 */
34
35 #include "usb_cdc.h"
36 #include "config_gpio.h"
37
38 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
39 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
40 #define AT91C_EP_IN_SIZE 0x40
41 #define AT91C_EP_OUT 1
42 #define AT91C_EP_OUT_SIZE 0x40
43 #define AT91C_EP_IN 2
44
45 const char devDescriptor[] = {
46 /* Device descriptor */
47 0x12, // bLength
48 0x01, // bDescriptorType
49 //0x10,0x01, // Complies with USB Spec. Release (0110h = release 1.10)
50 0x00,0x02, // Complies with USB Spec. Release (0110h = release 2.00)
51 0x02, // bDeviceClass: CDC class code
52 0x00, // bDeviceSubclass: CDC class sub code
53 0x00, // bDeviceProtocol: CDC Device protocol
54 0x08, // bMaxPacketSize0
55 0x2d,0x2d, // Vendor ID (--)
56 0x4d,0x50, // Product ID (PM), transmitted in reverse
57 0x01,0x00, // Device release number (0001)
58 0x01, // iManufacturer // 0x01
59 0x00, // iProduct
60 0x00, // SerialNumber
61 0x01 // bNumConfigs
62 };
63
64 const char cfgDescriptor[] = {
65 /* ============== CONFIGURATION 1 =========== */
66 /* Configuration 1 descriptor */
67 0x09, // CbLength
68 0x02, // CbDescriptorType
69 0x43, // CwTotalLength 2 EP + Control
70 0x00,
71 0x02, // CbNumInterfaces
72 0x01, // CbConfigurationValue
73 0x00, // CiConfiguration
74 0xC0, // CbmAttributes 0xA0
75 0x00, // CMaxPower
76
77 /* Communication Class Interface Descriptor Requirement */
78 0x09, // bLength
79 0x04, // bDescriptorType
80 0x00, // bInterfaceNumber
81 0x00, // bAlternateSetting
82 0x01, // bNumEndpoints
83 0x02, // bInterfaceClass
84 0x02, // bInterfaceSubclass
85 0x00, // bInterfaceProtocol
86 0x00, // iInterface
87
88 /* Header Functional Descriptor */
89 0x05, // bFunction Length
90 0x24, // bDescriptor type: CS_INTERFACE
91 0x00, // bDescriptor subtype: Header Func Desc
92 0x10, // bcdCDC:1.1
93 0x01,
94
95 /* ACM Functional Descriptor */
96 0x04, // bFunctionLength
97 0x24, // bDescriptor Type: CS_INTERFACE
98 0x02, // bDescriptor Subtype: ACM Func Desc
99 0x00, // bmCapabilities
100
101 /* Union Functional Descriptor */
102 0x05, // bFunctionLength
103 0x24, // bDescriptorType: CS_INTERFACE
104 0x06, // bDescriptor Subtype: Union Func Desc
105 0x00, // bMasterInterface: Communication Class Interface
106 0x01, // bSlaveInterface0: Data Class Interface
107
108 /* Call Management Functional Descriptor */
109 0x05, // bFunctionLength
110 0x24, // bDescriptor Type: CS_INTERFACE
111 0x01, // bDescriptor Subtype: Call Management Func Desc
112 0x00, // bmCapabilities: D1 + D0
113 0x01, // bDataInterface: Data Class Interface 1
114
115 /* Endpoint 1 descriptor */
116 0x07, // bLength
117 0x05, // bDescriptorType
118 0x83, // bEndpointAddress, Endpoint 03 - IN
119 0x03, // bmAttributes INT
120 0x08, // wMaxPacketSize
121 0x00,
122 0xFF, // bInterval
123
124 /* Data Class Interface Descriptor Requirement */
125 0x09, // bLength
126 0x04, // bDescriptorType
127 0x01, // bInterfaceNumber
128 0x00, // bAlternateSetting
129 0x02, // bNumEndpoints
130 0x0A, // bInterfaceClass
131 0x00, // bInterfaceSubclass
132 0x00, // bInterfaceProtocol
133 0x00, // iInterface
134
135 /* First alternate setting */
136 /* Endpoint 1 descriptor */
137 0x07, // bLength
138 0x05, // bDescriptorType
139 0x01, // bEndpointAddress, Endpoint 01 - OUT
140 0x02, // bmAttributes BULK
141 AT91C_EP_OUT_SIZE, // wMaxPacketSize
142 0x00,
143 0x00, // bInterval
144
145 /* Endpoint 2 descriptor */
146 0x07, // bLength
147 0x05, // bDescriptorType
148 0x82, // bEndpointAddress, Endpoint 02 - IN
149 0x02, // bmAttributes BULK
150 AT91C_EP_IN_SIZE, // wMaxPacketSize
151 0x00,
152 0x00 // bInterval
153 };
154
155 const char strDescriptor[] = {
156 26, // Length
157 0x03, // Type is string
158 'p', 0x00,
159 'r', 0x00,
160 'o', 0x00,
161 'x', 0x00,
162 'm', 0x00,
163 'a', 0x00,
164 'r', 0x00,
165 'k', 0x00,
166 '.', 0x00,
167 'o', 0x00,
168 'r', 0x00,
169 'g', 0x00,
170 };
171
172 // Bitmap for all status bits in CSR.
173 #define REG_NO_EFFECT_1_ALL AT91C_UDP_RX_DATA_BK0 | AT91C_UDP_RX_DATA_BK1 \
174 |AT91C_UDP_STALLSENT | AT91C_UDP_RXSETUP \
175 |AT91C_UDP_TXCOMP
176
177 // Clear flags in the UDP_CSR register and waits for synchronization
178 #define UDP_CLEAR_EP_FLAGS(endpoint, flags) { \
179 volatile unsigned int reg; \
180 reg = pUdp->UDP_CSR[(endpoint)]; \
181 reg |= REG_NO_EFFECT_1_ALL; \
182 reg &= ~(flags); \
183 pUdp->UDP_CSR[(endpoint)] = reg; \
184 while ( (pUdp->UDP_CSR[(endpoint)] & (flags)) == (flags)); \
185 } \
186
187 // reset flags in the UDP_CSR register and waits for synchronization
188 #define UDP_SET_EP_FLAGS(endpoint, flags) { \
189 volatile unsigned int reg; \
190 reg = pUdp->UDP_CSR[(endpoint)]; \
191 reg |= REG_NO_EFFECT_1_ALL; \
192 reg |= (flags); \
193 pUdp->UDP_CSR[(endpoint)] = reg; \
194 while ( ( pUdp->UDP_CSR[(endpoint)] & (flags)) != (flags)); \
195 } \
196
197
198 /* USB standard request code */
199 #define STD_GET_STATUS_ZERO 0x0080
200 #define STD_GET_STATUS_INTERFACE 0x0081
201 #define STD_GET_STATUS_ENDPOINT 0x0082
202
203 #define STD_CLEAR_FEATURE_ZERO 0x0100
204 #define STD_CLEAR_FEATURE_INTERFACE 0x0101
205 #define STD_CLEAR_FEATURE_ENDPOINT 0x0102
206
207 #define STD_SET_FEATURE_ZERO 0x0300
208 #define STD_SET_FEATURE_INTERFACE 0x0301
209 #define STD_SET_FEATURE_ENDPOINT 0x0302
210
211 #define STD_SET_ADDRESS 0x0500
212 #define STD_GET_DESCRIPTOR 0x0680
213 #define STD_SET_DESCRIPTOR 0x0700
214 #define STD_GET_CONFIGURATION 0x0880
215 #define STD_SET_CONFIGURATION 0x0900
216 #define STD_GET_INTERFACE 0x0A81
217 #define STD_SET_INTERFACE 0x0B01
218 #define STD_SYNCH_FRAME 0x0C82
219
220 /* CDC Class Specific Request Code */
221 #define GET_LINE_CODING 0x21A1
222 #define SET_LINE_CODING 0x2021
223 #define SET_CONTROL_LINE_STATE 0x2221
224
225 typedef struct {
226 unsigned int dwDTERRate;
227 char bCharFormat;
228 char bParityType;
229 char bDataBits;
230 } AT91S_CDC_LINE_CODING, *AT91PS_CDC_LINE_CODING;
231
232 AT91S_CDC_LINE_CODING line = {
233 115200, // baudrate
234 0, // 1 Stop Bit
235 0, // None Parity
236 8}; // 8 Data bits
237
238 void AT91F_CDC_Enumerate();
239
240 AT91PS_UDP pUdp = AT91C_BASE_UDP;
241 byte_t btConfiguration = 0;
242 byte_t btConnection = 0;
243 byte_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;
244
245 //*----------------------------------------------------------------------------
246 //* \fn usb_disable
247 //* \brief This function deactivates the USB device
248 //*----------------------------------------------------------------------------
249 void usb_disable() {
250 // Disconnect the USB device
251 AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;
252
253 // Clear all lingering interrupts
254 if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {
255 pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;
256 }
257 }
258
259 //*----------------------------------------------------------------------------
260 //* \fn usb_enable
261 //* \brief This function Activates the USB device
262 //*----------------------------------------------------------------------------
263 void usb_enable() {
264 // Set the PLL USB Divider
265 AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
266
267 // Specific Chip USB Initialisation
268 // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock
269 AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;
270 AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);
271
272 // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO
273 // Set in PIO mode and Configure in Output
274 AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode
275 AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output
276
277 // Clear for set the Pullup resistor
278 AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;
279
280 // Disconnect and reconnect USB controller for 100ms
281 usb_disable();
282
283 // Wait for a short while
284 for (volatile size_t i=0; i<0x100000; i++);
285 //sleep(1);
286
287 // Reconnect USB reconnect
288 AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;
289 AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;
290 }
291
292 //*----------------------------------------------------------------------------
293 //* \fn usb_check
294 //* \brief Test if the device is configured and handle enumeration
295 //*----------------------------------------------------------------------------
296 bool usb_check() {
297 AT91_REG isr = pUdp->UDP_ISR;
298
299 if (isr & AT91C_UDP_ENDBUSRES) {
300 pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;
301 // reset all endpoints
302 pUdp->UDP_RSTEP = (unsigned int)-1;
303 pUdp->UDP_RSTEP = 0;
304 // Enable the function
305 pUdp->UDP_FADDR = AT91C_UDP_FEN;
306 // Configure endpoint 0
307 pUdp->UDP_CSR[0] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);
308 }
309 else if (isr & AT91C_UDP_EPINT0) {
310 pUdp->UDP_ICR = AT91C_UDP_EPINT0;
311 AT91F_CDC_Enumerate();
312 }
313 return (btConfiguration) ? true : false;
314 }
315
316
317 bool usb_poll()
318 {
319 if (!usb_check()) return false;
320 return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);
321 }
322
323 /**
324 In github PR #129, some users appears to get a false positive from
325 usb_poll, which returns true, but the usb_read operation
326 still returns 0.
327 This check is basically the same as above, but also checks
328 that the length available to read is non-zero, thus hopefully fixes the
329 bug.
330 **/
331 bool usb_poll_validate_length()
332 {
333 if (!usb_check()) return false;
334 if (!(pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;
335 return (pUdp->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;
336 }
337
338 //*----------------------------------------------------------------------------
339 //* \fn usb_read
340 //* \brief Read available data from Endpoint OUT
341 //*----------------------------------------------------------------------------
342 uint32_t usb_read(byte_t* data, size_t len) {
343 byte_t bank = btReceiveBank;
344 uint32_t packetSize, nbBytesRcv = 0;
345 uint32_t time_out = 0;
346
347 while (len) {
348 if (!usb_check()) break;
349
350 if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {
351 packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);
352 len -= packetSize;
353 while(packetSize--)
354 data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];
355
356
357 UDP_CLEAR_EP_FLAGS(AT91C_EP_OUT, bank)
358 //pUdp->UDP_CSR[AT91C_EP_OUT] &= ~(bank);
359
360 if (bank == AT91C_UDP_RX_DATA_BK0)
361 bank = AT91C_UDP_RX_DATA_BK1;
362 else
363 bank = AT91C_UDP_RX_DATA_BK0;
364 }
365 if (time_out++ == 0x1fff) break;
366 }
367
368 btReceiveBank = bank;
369 return nbBytesRcv;
370 }
371
372 //*----------------------------------------------------------------------------
373 //* \fn usb_write
374 //* \brief Send through endpoint 2
375 //*----------------------------------------------------------------------------
376 uint32_t usb_write(const byte_t* data, const size_t len) {
377 size_t length = len;
378 uint32_t cpt = 0;
379
380 if (!length) return 0;
381 if (!usb_check()) return 0;
382
383 // Send the first packet
384 cpt = MIN(length, AT91C_EP_IN_SIZE-1);
385 length -= cpt;
386 while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
387
388 UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY)
389 //pUdp->UDP_CSR[AT91C_EP_IN] |= AT91C_UDP_TXPKTRDY;
390
391 while (length) {
392 // Fill the second bank
393 cpt = MIN(length, AT91C_EP_IN_SIZE-1);
394 length -= cpt;
395 while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
396 // Wait for the first bank to be sent
397 while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {
398 if (!usb_check()) return length;
399 }
400
401 UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP)
402 //pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);
403 //while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);
404
405 UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY)
406 //pUdp->UDP_CSR[AT91C_EP_IN] |= AT91C_UDP_TXPKTRDY;
407 }
408
409 // Wait for the end of transfer
410 while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {
411 if (!usb_check()) return length;
412 }
413
414 UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP)
415 //pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);
416 //while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);
417
418 return length;
419 }
420
421 //*----------------------------------------------------------------------------
422 //* \fn AT91F_USB_SendData
423 //* \brief Send Data through the control endpoint
424 //*----------------------------------------------------------------------------
425 unsigned int csrTab[100] = {0x00};
426 unsigned char csrIdx = 0;
427
428 static void AT91F_USB_SendData(AT91PS_UDP pUdp, const char *pData, uint32_t length) {
429 uint32_t cpt = 0;
430 AT91_REG csr;
431
432 do {
433 cpt = MIN(length, 8);
434 length -= cpt;
435
436 while (cpt--)
437 pUdp->UDP_FDR[0] = *pData++;
438
439 if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {
440
441 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_TXCOMP)
442 //pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
443 //while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);
444 }
445
446 UDP_SET_EP_FLAGS(0, AT91C_UDP_TXPKTRDY)
447 // pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;
448 do {
449 csr = pUdp->UDP_CSR[0];
450
451 // Data IN stage has been stopped by a status OUT
452 if (csr & AT91C_UDP_RX_DATA_BK0) {
453
454 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_RX_DATA_BK0)
455 //pUdp->UDP_CSR[0] &= ~(AT91C_UDP_RX_DATA_BK0);
456 return;
457 }
458 } while ( !(csr & AT91C_UDP_TXCOMP) );
459
460 } while (length);
461
462 if (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) {
463
464 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_TXCOMP)
465 //pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
466 //while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);
467 }
468 }
469
470 //*----------------------------------------------------------------------------
471 //* \fn AT91F_USB_SendZlp
472 //* \brief Send zero length packet through the control endpoint
473 //*----------------------------------------------------------------------------
474 void AT91F_USB_SendZlp(AT91PS_UDP pUdp) {
475
476 UDP_SET_EP_FLAGS(0, AT91C_UDP_TXPKTRDY)
477 //pUdp->UDP_CSR[0] |= AT91C_UDP_TXPKTRDY;
478
479 while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP) );
480
481 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_TXCOMP)
482 //pUdp->UDP_CSR[0] &= ~(AT91C_UDP_TXCOMP);
483 //while (pUdp->UDP_CSR[0] & AT91C_UDP_TXCOMP);
484 }
485
486 //*----------------------------------------------------------------------------
487 //* \fn AT91F_USB_SendStall
488 //* \brief Stall the control endpoint
489 //*----------------------------------------------------------------------------
490 void AT91F_USB_SendStall(AT91PS_UDP pUdp) {
491 pUdp->UDP_CSR[0] |= AT91C_UDP_FORCESTALL;
492 while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_ISOERROR) );
493
494 pUdp->UDP_CSR[0] &= ~(AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);
495 while (pUdp->UDP_CSR[0] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));
496 }
497
498 //*----------------------------------------------------------------------------
499 //* \fn AT91F_CDC_Enumerate
500 //* \brief This function is a callback invoked when a SETUP packet is received
501 //*----------------------------------------------------------------------------
502 void AT91F_CDC_Enumerate() {
503 byte_t bmRequestType, bRequest;
504 uint16_t wValue, wIndex, wLength, wStatus;
505
506 if ( !(pUdp->UDP_CSR[0] & AT91C_UDP_RXSETUP) )
507 return;
508
509 bmRequestType = pUdp->UDP_FDR[0];
510 bRequest = pUdp->UDP_FDR[0];
511 wValue = (pUdp->UDP_FDR[0] & 0xFF);
512 wValue |= (pUdp->UDP_FDR[0] << 8);
513 wIndex = (pUdp->UDP_FDR[0] & 0xFF);
514 wIndex |= (pUdp->UDP_FDR[0] << 8);
515 wLength = (pUdp->UDP_FDR[0] & 0xFF);
516 wLength |= (pUdp->UDP_FDR[0] << 8);
517
518 if (bmRequestType & 0x80) {
519
520 UDP_SET_EP_FLAGS(0, AT91C_UDP_DIR)
521 //pUdp->UDP_CSR[0] |= AT91C_UDP_DIR;
522 //while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_DIR) );
523 }
524
525 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_RXSETUP)
526 //pUdp->UDP_CSR[0] &= ~AT91C_UDP_RXSETUP;
527 //while ( (pUdp->UDP_CSR[0] & AT91C_UDP_RXSETUP) );
528
529 // Handle supported standard device request Cf Table 9-3 in USB specification Rev 1.1
530 switch ((bRequest << 8) | bmRequestType) {
531 case STD_GET_DESCRIPTOR:
532 if (wValue == 0x100) // Return Device Descriptor
533 AT91F_USB_SendData(pUdp, devDescriptor, MIN(sizeof(devDescriptor), wLength));
534 else if (wValue == 0x200) // Return Configuration Descriptor
535 AT91F_USB_SendData(pUdp, cfgDescriptor, MIN(sizeof(cfgDescriptor), wLength));
536 else if ((wValue & 0x300) == 0x300) // Return String Descriptor
537 AT91F_USB_SendData(pUdp, strDescriptor, MIN(sizeof(strDescriptor), wLength));
538 else
539 AT91F_USB_SendStall(pUdp);
540 break;
541 case STD_SET_ADDRESS:
542 AT91F_USB_SendZlp(pUdp);
543 pUdp->UDP_FADDR = (AT91C_UDP_FEN | wValue);
544 pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0;
545 break;
546 case STD_SET_CONFIGURATION:
547 btConfiguration = wValue;
548 AT91F_USB_SendZlp(pUdp);
549 pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;
550 pUdp->UDP_CSR[1] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;
551 pUdp->UDP_CSR[2] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;
552 pUdp->UDP_CSR[3] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;
553 break;
554 case STD_GET_CONFIGURATION:
555 AT91F_USB_SendData(pUdp, (char *) &(btConfiguration), sizeof(btConfiguration));
556 break;
557 case STD_GET_STATUS_ZERO:
558 wStatus = 0;
559 AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
560 break;
561 case STD_GET_STATUS_INTERFACE:
562 wStatus = 0;
563 AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
564 break;
565 case STD_GET_STATUS_ENDPOINT:
566 wStatus = 0;
567 wIndex &= 0x0F;
568 if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= 3)) {
569 wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
570 AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
571 }
572 else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == 0)) {
573 wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
574 AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
575 }
576 else
577 AT91F_USB_SendStall(pUdp);
578 break;
579 case STD_SET_FEATURE_ZERO:
580 AT91F_USB_SendStall(pUdp);
581 break;
582 case STD_SET_FEATURE_INTERFACE:
583 AT91F_USB_SendZlp(pUdp);
584 break;
585 case STD_SET_FEATURE_ENDPOINT:
586 wIndex &= 0x0F;
587 if ((wValue == 0) && wIndex && (wIndex <= 3)) {
588 pUdp->UDP_CSR[wIndex] = 0;
589 AT91F_USB_SendZlp(pUdp);
590 }
591 else
592 AT91F_USB_SendStall(pUdp);
593 break;
594 case STD_CLEAR_FEATURE_ZERO:
595 AT91F_USB_SendStall(pUdp);
596 break;
597 case STD_CLEAR_FEATURE_INTERFACE:
598 AT91F_USB_SendZlp(pUdp);
599 break;
600 case STD_CLEAR_FEATURE_ENDPOINT:
601 wIndex &= 0x0F;
602 if ((wValue == 0) && wIndex && (wIndex <= 3)) {
603 if (wIndex == 1)
604 pUdp->UDP_CSR[1] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);
605 else if (wIndex == 2)
606 pUdp->UDP_CSR[2] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);
607 else if (wIndex == 3)
608 pUdp->UDP_CSR[3] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_ISO_IN);
609 AT91F_USB_SendZlp(pUdp);
610 }
611 else
612 AT91F_USB_SendStall(pUdp);
613 break;
614
615 // handle CDC class requests
616 case SET_LINE_CODING:
617 while ( !(pUdp->UDP_CSR[0] & AT91C_UDP_RX_DATA_BK0) );
618 UDP_CLEAR_EP_FLAGS(0, AT91C_UDP_RX_DATA_BK0)
619 //pUdp->UDP_CSR[0] &= ~(AT91C_UDP_RX_DATA_BK0);
620 AT91F_USB_SendZlp(pUdp);
621 break;
622 case GET_LINE_CODING:
623 AT91F_USB_SendData(pUdp, (char *) &line, MIN(sizeof(line), wLength));
624 break;
625 case SET_CONTROL_LINE_STATE:
626 btConnection = wValue;
627 AT91F_USB_SendZlp(pUdp);
628 break;
629 default:
630 AT91F_USB_SendStall(pUdp);
631 break;
632 }
633 }
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