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5bcc76c4 | 1 | /*\r |
2 | * at91sam7s USB CDC device implementation\r | |
3 | *\r | |
4 | * Copyright (c) 2012, Roel Verdult\r | |
5 | * All rights reserved.\r | |
6 | *\r | |
7 | * Redistribution and use in source and binary forms, with or without\r | |
8 | * modification, are permitted provided that the following conditions are met:\r | |
9 | * 1. Redistributions of source code must retain the above copyright\r | |
10 | * notice, this list of conditions and the following disclaimer.\r | |
11 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
12 | * notice, this list of conditions and the following disclaimer in the\r | |
13 | * documentation and/or other materials provided with the distribution.\r | |
14 | * 3. Neither the name of the copyright holders nor the\r | |
15 | * names of its contributors may be used to endorse or promote products\r | |
16 | * derived from this software without specific prior written permission.\r | |
17 | *\r | |
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY\r | |
19 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r | |
20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r | |
21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY\r | |
22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r | |
23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r | |
24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\r | |
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r | |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r | |
27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r | |
28 | *\r | |
29 | * based on the "Basic USB Example" from ATMEL (doc6123.pdf)\r | |
30 | *\r | |
31 | * @file usb_cdc.c\r | |
32 | * @brief\r | |
33 | */\r | |
34 | \r | |
35 | #include "usb_cdc.h"\r | |
1f42ccdd | 36 | #include "at91sam7s512.h"\r |
79a73ab2 | 37 | #include "config_gpio.h"\r |
5bcc76c4 | 38 | \r |
3a89d04c | 39 | \r |
40 | #define AT91C_EP_CONTROL 0\r | |
5bcc76c4 | 41 | #define AT91C_EP_IN_SIZE 0x40\r |
42 | #define AT91C_EP_OUT 1\r | |
43 | #define AT91C_EP_OUT_SIZE 0x40\r | |
44 | #define AT91C_EP_IN 2\r | |
45 | \r | |
1f42ccdd | 46 | static const char devDescriptor[] = {\r |
5bcc76c4 | 47 | /* Device descriptor */\r |
48 | 0x12, // bLength\r | |
49 | 0x01, // bDescriptorType\r | |
1f42ccdd | 50 | 0x00,0x02, // Complies with USB Spec. Release (0200h = release 2.0)\r |
5bcc76c4 | 51 | 0x02, // bDeviceClass: CDC class code\r |
52 | 0x00, // bDeviceSubclass: CDC class sub code\r | |
53 | 0x00, // bDeviceProtocol: CDC Device protocol\r | |
54 | 0x08, // bMaxPacketSize0\r | |
1f42ccdd | 55 | 0xc4,0x9a, // Vendor ID (0x9ac4 = J. Westhues)\r |
56 | 0x8f,0x4b, // Product ID (0x4b8f = Proxmark-3 RFID Instrument)\r | |
5bcc76c4 | 57 | 0x01,0x00, // Device release number (0001)\r |
1f42ccdd | 58 | 0x01, // iManufacturer\r |
59 | 0x02, // iProduct\r | |
60 | 0x00, // iSerialNumber\r | |
5bcc76c4 | 61 | 0x01 // bNumConfigs\r |
62 | };\r | |
63 | \r | |
1f42ccdd | 64 | static const char cfgDescriptor[] = {\r |
5bcc76c4 | 65 | /* ============== CONFIGURATION 1 =========== */\r |
66 | /* Configuration 1 descriptor */\r | |
67 | 0x09, // CbLength\r | |
68 | 0x02, // CbDescriptorType\r | |
69 | 0x43, // CwTotalLength 2 EP + Control\r | |
70 | 0x00,\r | |
71 | 0x02, // CbNumInterfaces\r | |
72 | 0x01, // CbConfigurationValue\r | |
73 | 0x00, // CiConfiguration\r | |
74 | 0xC0, // CbmAttributes 0xA0\r | |
1f42ccdd | 75 | 0xFA, // CMaxPower\r |
5bcc76c4 | 76 | \r |
77 | /* Communication Class Interface Descriptor Requirement */\r | |
78 | 0x09, // bLength\r | |
79 | 0x04, // bDescriptorType\r | |
80 | 0x00, // bInterfaceNumber\r | |
81 | 0x00, // bAlternateSetting\r | |
82 | 0x01, // bNumEndpoints\r | |
83 | 0x02, // bInterfaceClass\r | |
84 | 0x02, // bInterfaceSubclass\r | |
1f42ccdd | 85 | 0x01, // bInterfaceProtocol\r |
5bcc76c4 | 86 | 0x00, // iInterface\r |
87 | \r | |
88 | /* Header Functional Descriptor */\r | |
89 | 0x05, // bFunction Length\r | |
90 | 0x24, // bDescriptor type: CS_INTERFACE\r | |
91 | 0x00, // bDescriptor subtype: Header Func Desc\r | |
92 | 0x10, // bcdCDC:1.1\r | |
93 | 0x01,\r | |
94 | \r | |
95 | /* ACM Functional Descriptor */\r | |
96 | 0x04, // bFunctionLength\r | |
97 | 0x24, // bDescriptor Type: CS_INTERFACE\r | |
98 | 0x02, // bDescriptor Subtype: ACM Func Desc\r | |
1f42ccdd | 99 | 0x02, // bmCapabilities\r |
5bcc76c4 | 100 | \r |
101 | /* Union Functional Descriptor */\r | |
102 | 0x05, // bFunctionLength\r | |
103 | 0x24, // bDescriptorType: CS_INTERFACE\r | |
104 | 0x06, // bDescriptor Subtype: Union Func Desc\r | |
105 | 0x00, // bMasterInterface: Communication Class Interface\r | |
106 | 0x01, // bSlaveInterface0: Data Class Interface\r | |
107 | \r | |
108 | /* Call Management Functional Descriptor */\r | |
109 | 0x05, // bFunctionLength\r | |
110 | 0x24, // bDescriptor Type: CS_INTERFACE\r | |
111 | 0x01, // bDescriptor Subtype: Call Management Func Desc\r | |
112 | 0x00, // bmCapabilities: D1 + D0\r | |
113 | 0x01, // bDataInterface: Data Class Interface 1\r | |
114 | \r | |
115 | /* Endpoint 1 descriptor */\r | |
116 | 0x07, // bLength\r | |
117 | 0x05, // bDescriptorType\r | |
118 | 0x83, // bEndpointAddress, Endpoint 03 - IN\r | |
119 | 0x03, // bmAttributes INT\r | |
120 | 0x08, // wMaxPacketSize\r | |
121 | 0x00,\r | |
122 | 0xFF, // bInterval\r | |
123 | \r | |
124 | /* Data Class Interface Descriptor Requirement */\r | |
125 | 0x09, // bLength\r | |
126 | 0x04, // bDescriptorType\r | |
127 | 0x01, // bInterfaceNumber\r | |
128 | 0x00, // bAlternateSetting\r | |
129 | 0x02, // bNumEndpoints\r | |
130 | 0x0A, // bInterfaceClass\r | |
131 | 0x00, // bInterfaceSubclass\r | |
132 | 0x00, // bInterfaceProtocol\r | |
133 | 0x00, // iInterface\r | |
134 | \r | |
135 | /* First alternate setting */\r | |
136 | /* Endpoint 1 descriptor */\r | |
137 | 0x07, // bLength\r | |
138 | 0x05, // bDescriptorType\r | |
139 | 0x01, // bEndpointAddress, Endpoint 01 - OUT\r | |
140 | 0x02, // bmAttributes BULK\r | |
141 | AT91C_EP_OUT_SIZE, // wMaxPacketSize\r | |
142 | 0x00,\r | |
143 | 0x00, // bInterval\r | |
144 | \r | |
145 | /* Endpoint 2 descriptor */\r | |
146 | 0x07, // bLength\r | |
147 | 0x05, // bDescriptorType\r | |
148 | 0x82, // bEndpointAddress, Endpoint 02 - IN\r | |
149 | 0x02, // bmAttributes BULK\r | |
150 | AT91C_EP_IN_SIZE, // wMaxPacketSize\r | |
151 | 0x00,\r | |
152 | 0x00 // bInterval\r | |
153 | };\r | |
154 | \r | |
1f42ccdd | 155 | static const char StrDescLanguageCodes[] = {\r |
156 | 4, // Length\r | |
157 | 0x03, // Type is string\r | |
158 | 0x09, 0x04 // supported language Code 0 = 0x0409 (English)\r | |
159 | };\r | |
160 | \r | |
161 | static const char StrDescManufacturer[] = {\r | |
162 | 26, // Length\r | |
5bcc76c4 | 163 | 0x03, // Type is string\r |
164 | 'p', 0x00,\r | |
165 | 'r', 0x00,\r | |
166 | 'o', 0x00,\r | |
167 | 'x', 0x00,\r | |
168 | 'm', 0x00,\r | |
169 | 'a', 0x00,\r | |
170 | 'r', 0x00,\r | |
171 | 'k', 0x00,\r | |
172 | '.', 0x00,\r | |
173 | 'o', 0x00,\r | |
174 | 'r', 0x00,\r | |
1f42ccdd | 175 | 'g', 0x00\r |
176 | };\r | |
177 | \r | |
178 | static const char StrDescProduct[] = {\r | |
179 | 8, // Length\r | |
180 | 0x03, // Type is string\r | |
181 | 'P', 0x00,\r | |
182 | 'M', 0x00,\r | |
183 | '3', 0x00\r | |
184 | };\r | |
185 | \r | |
186 | static const char* const pStrings[] =\r | |
187 | {\r | |
188 | StrDescLanguageCodes,\r | |
189 | StrDescManufacturer,\r | |
190 | StrDescProduct\r | |
5bcc76c4 | 191 | };\r |
192 | \r | |
1f42ccdd | 193 | const char* getStringDescriptor(uint8_t idx)\r |
194 | {\r | |
195 | if(idx >= (sizeof(pStrings) / sizeof(pStrings[0]))) {\r | |
196 | return(NULL);\r | |
197 | } else {\r | |
198 | return(pStrings[idx]);\r | |
199 | }\r | |
200 | }\r | |
5bcc76c4 | 201 | \r |
3a89d04c | 202 | // Bitmap for all status bits in CSR which must be written as 1 to cause no effect\r |
203 | #define REG_NO_EFFECT_1_ALL AT91C_UDP_RX_DATA_BK0 | AT91C_UDP_RX_DATA_BK1 \\r | |
204 | |AT91C_UDP_STALLSENT | AT91C_UDP_RXSETUP \\r | |
205 | |AT91C_UDP_TXCOMP\r | |
206 | \r | |
207 | // Clear flags in the UDP_CSR register\r | |
208 | #define UDP_CLEAR_EP_FLAGS(endpoint, flags) { \\r | |
209 | volatile unsigned int reg; \\r | |
210 | reg = pUdp->UDP_CSR[(endpoint)]; \\r | |
211 | reg |= REG_NO_EFFECT_1_ALL; \\r | |
212 | reg &= ~(flags); \\r | |
213 | pUdp->UDP_CSR[(endpoint)] = reg; \\r | |
214 | } \r | |
215 | \r | |
216 | // Set flags in the UDP_CSR register\r | |
217 | #define UDP_SET_EP_FLAGS(endpoint, flags) { \\r | |
218 | volatile unsigned int reg; \\r | |
219 | reg = pUdp->UDP_CSR[(endpoint)]; \\r | |
220 | reg |= REG_NO_EFFECT_1_ALL; \\r | |
221 | reg |= (flags); \\r | |
222 | pUdp->UDP_CSR[(endpoint)] = reg; \\r | |
223 | }\r | |
224 | \r | |
225 | /* USB standard request codes */\r | |
5bcc76c4 | 226 | #define STD_GET_STATUS_ZERO 0x0080\r |
227 | #define STD_GET_STATUS_INTERFACE 0x0081\r | |
228 | #define STD_GET_STATUS_ENDPOINT 0x0082\r | |
229 | \r | |
230 | #define STD_CLEAR_FEATURE_ZERO 0x0100\r | |
231 | #define STD_CLEAR_FEATURE_INTERFACE 0x0101\r | |
232 | #define STD_CLEAR_FEATURE_ENDPOINT 0x0102\r | |
233 | \r | |
234 | #define STD_SET_FEATURE_ZERO 0x0300\r | |
235 | #define STD_SET_FEATURE_INTERFACE 0x0301\r | |
236 | #define STD_SET_FEATURE_ENDPOINT 0x0302\r | |
237 | \r | |
238 | #define STD_SET_ADDRESS 0x0500\r | |
239 | #define STD_GET_DESCRIPTOR 0x0680\r | |
240 | #define STD_SET_DESCRIPTOR 0x0700\r | |
241 | #define STD_GET_CONFIGURATION 0x0880\r | |
242 | #define STD_SET_CONFIGURATION 0x0900\r | |
243 | #define STD_GET_INTERFACE 0x0A81\r | |
244 | #define STD_SET_INTERFACE 0x0B01\r | |
245 | #define STD_SYNCH_FRAME 0x0C82\r | |
246 | \r | |
247 | /* CDC Class Specific Request Code */\r | |
248 | #define GET_LINE_CODING 0x21A1\r | |
249 | #define SET_LINE_CODING 0x2021\r | |
250 | #define SET_CONTROL_LINE_STATE 0x2221\r | |
251 | \r | |
252 | typedef struct {\r | |
253 | unsigned int dwDTERRate;\r | |
254 | char bCharFormat;\r | |
255 | char bParityType;\r | |
256 | char bDataBits;\r | |
257 | } AT91S_CDC_LINE_CODING, *AT91PS_CDC_LINE_CODING;\r | |
258 | \r | |
259 | AT91S_CDC_LINE_CODING line = {\r | |
260 | 115200, // baudrate\r | |
261 | 0, // 1 Stop Bit\r | |
262 | 0, // None Parity\r | |
263 | 8}; // 8 Data bits\r | |
264 | \r | |
265 | void AT91F_CDC_Enumerate();\r | |
266 | \r | |
267 | AT91PS_UDP pUdp = AT91C_BASE_UDP;\r | |
268 | byte_t btConfiguration = 0;\r | |
269 | byte_t btConnection = 0;\r | |
270 | byte_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;\r | |
271 | \r | |
6e82300d | 272 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 273 | //* \fn usb_disable\r |
6e82300d | 274 | //* \brief This function deactivates the USB device\r |
275 | //*----------------------------------------------------------------------------\r | |
276 | void usb_disable() {\r | |
79a73ab2 | 277 | // Disconnect the USB device\r |
278 | AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;\r | |
6e82300d | 279 | \r |
280 | // Clear all lingering interrupts\r | |
281 | if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {\r | |
282 | pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r | |
283 | }\r | |
284 | }\r | |
285 | \r | |
5bcc76c4 | 286 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 287 | //* \fn usb_enable\r |
5bcc76c4 | 288 | //* \brief This function Activates the USB device\r |
289 | //*----------------------------------------------------------------------------\r | |
6e82300d | 290 | void usb_enable() {\r |
5bcc76c4 | 291 | // Set the PLL USB Divider\r |
292 | AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\r | |
293 | \r | |
294 | // Specific Chip USB Initialisation\r | |
295 | // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock\r | |
296 | AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;\r | |
297 | AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);\r | |
298 | \r | |
299 | // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO\r | |
300 | // Set in PIO mode and Configure in Output\r | |
79a73ab2 | 301 | AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode\r |
302 | AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output\r | |
5bcc76c4 | 303 | \r |
79a73ab2 | 304 | // Clear for set the Pullup resistor\r |
305 | AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;\r | |
6e82300d | 306 | \r |
79a73ab2 | 307 | // Disconnect and reconnect USB controller for 100ms\r |
6e82300d | 308 | usb_disable();\r |
309 | \r | |
310 | // Wait for a short while\r | |
28fdb04f | 311 | for (volatile size_t i=0; i<0x100000; i++);\r |
6e82300d | 312 | \r |
313 | // Reconnect USB reconnect\r | |
79a73ab2 | 314 | AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;\r |
315 | AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;\r | |
5bcc76c4 | 316 | }\r |
317 | \r | |
318 | //*----------------------------------------------------------------------------\r | |
79a73ab2 | 319 | //* \fn usb_check\r |
5bcc76c4 | 320 | //* \brief Test if the device is configured and handle enumeration\r |
321 | //*----------------------------------------------------------------------------\r | |
6e82300d | 322 | bool usb_check() {\r |
5bcc76c4 | 323 | AT91_REG isr = pUdp->UDP_ISR;\r |
324 | \r | |
325 | if (isr & AT91C_UDP_ENDBUSRES) {\r | |
326 | pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r | |
327 | // reset all endpoints\r | |
328 | pUdp->UDP_RSTEP = (unsigned int)-1;\r | |
329 | pUdp->UDP_RSTEP = 0;\r | |
330 | // Enable the function\r | |
331 | pUdp->UDP_FADDR = AT91C_UDP_FEN;\r | |
332 | // Configure endpoint 0\r | |
3a89d04c | 333 | pUdp->UDP_CSR[AT91C_EP_CONTROL] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);\r |
5bcc76c4 | 334 | }\r |
335 | else if (isr & AT91C_UDP_EPINT0) {\r | |
336 | pUdp->UDP_ICR = AT91C_UDP_EPINT0;\r | |
337 | AT91F_CDC_Enumerate();\r | |
338 | }\r | |
339 | return (btConfiguration) ? true : false;\r | |
340 | }\r | |
341 | \r | |
342 | \r | |
343 | bool usb_poll()\r | |
344 | {\r | |
345 | if (!usb_check()) return false;\r | |
346 | return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);\r | |
347 | }\r | |
348 | \r | |
83f3f8ac MHS |
349 | /**\r |
350 | In github PR #129, some users appears to get a false positive from\r | |
351 | usb_poll, which returns true, but the usb_read operation\r | |
352 | still returns 0.\r | |
353 | This check is basically the same as above, but also checks\r | |
354 | that the length available to read is non-zero, thus hopefully fixes the\r | |
355 | bug.\r | |
356 | **/\r | |
357 | bool usb_poll_validate_length()\r | |
358 | {\r | |
359 | \r | |
360 | if (!usb_check()) return false;\r | |
361 | if (!(pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;\r | |
362 | return (pUdp->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;\r | |
363 | }\r | |
364 | \r | |
5bcc76c4 | 365 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 366 | //* \fn usb_read\r |
5bcc76c4 | 367 | //* \brief Read available data from Endpoint OUT\r |
368 | //*----------------------------------------------------------------------------\r | |
6e82300d | 369 | uint32_t usb_read(byte_t* data, size_t len) {\r |
d2deaf7b | 370 | byte_t bank = btReceiveBank;\r |
5bcc76c4 | 371 | uint32_t packetSize, nbBytesRcv = 0;\r |
d2deaf7b | 372 | uint32_t time_out = 0;\r |
5bcc76c4 | 373 | \r |
23b598ee | 374 | while (len) {\r |
5bcc76c4 | 375 | if (!usb_check()) break;\r |
376 | \r | |
377 | if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {\r | |
378 | packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r | |
d2deaf7b | 379 | len -= packetSize;\r |
5bcc76c4 | 380 | while(packetSize--)\r |
381 | data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];\r | |
3a89d04c | 382 | UDP_CLEAR_EP_FLAGS(AT91C_EP_OUT, bank);\r |
23b598ee | 383 | if (bank == AT91C_UDP_RX_DATA_BK0) {\r |
5bcc76c4 | 384 | bank = AT91C_UDP_RX_DATA_BK1;\r |
d2deaf7b | 385 | } else {\r |
5bcc76c4 | 386 | bank = AT91C_UDP_RX_DATA_BK0;\r |
d2deaf7b | 387 | }\r |
5bcc76c4 | 388 | }\r |
d2deaf7b | 389 | if (time_out++ == 0x1fff) break;\r |
5bcc76c4 | 390 | }\r |
391 | \r | |
392 | btReceiveBank = bank;\r | |
393 | return nbBytesRcv;\r | |
394 | }\r | |
395 | \r | |
396 | //*----------------------------------------------------------------------------\r | |
79a73ab2 | 397 | //* \fn usb_write\r |
5bcc76c4 | 398 | //* \brief Send through endpoint 2\r |
399 | //*----------------------------------------------------------------------------\r | |
6e82300d | 400 | uint32_t usb_write(const byte_t* data, const size_t len) {\r |
5bcc76c4 | 401 | size_t length = len;\r |
402 | uint32_t cpt = 0;\r | |
403 | \r | |
404 | if (!length) return 0;\r | |
405 | if (!usb_check()) return 0;\r | |
406 | \r | |
407 | // Send the first packet\r | |
408 | cpt = MIN(length, AT91C_EP_IN_SIZE-1);\r | |
409 | length -= cpt;\r | |
410 | while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r | |
3a89d04c | 411 | UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 412 | \r |
413 | while (length) {\r | |
414 | // Fill the second bank\r | |
415 | cpt = MIN(length, AT91C_EP_IN_SIZE-1);\r | |
416 | length -= cpt;\r | |
417 | while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r | |
b8140ab1 | 418 | // Wait for the first bank to be sent\r |
5bcc76c4 | 419 | while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r |
420 | if (!usb_check()) return length;\r | |
421 | }\r | |
3a89d04c | 422 | UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r |
5bcc76c4 | 423 | while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r |
3a89d04c | 424 | UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 425 | }\r |
426 | \r | |
427 | // Wait for the end of transfer\r | |
428 | while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r | |
429 | if (!usb_check()) return length;\r | |
430 | }\r | |
431 | \r | |
3a89d04c | 432 | UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r |
5bcc76c4 | 433 | while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r |
434 | \r | |
435 | return length;\r | |
436 | }\r | |
437 | \r | |
438 | //*----------------------------------------------------------------------------\r | |
439 | //* \fn AT91F_USB_SendData\r | |
440 | //* \brief Send Data through the control endpoint\r | |
441 | //*----------------------------------------------------------------------------\r | |
5ee70129 | 442 | unsigned int csrTab[100] = {0x00};\r |
5bcc76c4 | 443 | unsigned char csrIdx = 0;\r |
444 | \r | |
6e82300d | 445 | static void AT91F_USB_SendData(AT91PS_UDP pUdp, const char *pData, uint32_t length) {\r |
5bcc76c4 | 446 | uint32_t cpt = 0;\r |
447 | AT91_REG csr;\r | |
448 | \r | |
449 | do {\r | |
450 | cpt = MIN(length, 8);\r | |
451 | length -= cpt;\r | |
452 | \r | |
453 | while (cpt--)\r | |
454 | pUdp->UDP_FDR[0] = *pData++;\r | |
455 | \r | |
3a89d04c | 456 | if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r |
457 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
458 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 459 | }\r |
460 | \r | |
3a89d04c | 461 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 462 | do {\r |
3a89d04c | 463 | csr = pUdp->UDP_CSR[AT91C_EP_CONTROL];\r |
5bcc76c4 | 464 | \r |
465 | // Data IN stage has been stopped by a status OUT\r | |
466 | if (csr & AT91C_UDP_RX_DATA_BK0) {\r | |
3a89d04c | 467 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r |
5bcc76c4 | 468 | return;\r |
469 | }\r | |
470 | } while ( !(csr & AT91C_UDP_TXCOMP) );\r | |
471 | \r | |
472 | } while (length);\r | |
473 | \r | |
3a89d04c | 474 | if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r |
475 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
476 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 477 | }\r |
478 | }\r | |
479 | \r | |
480 | //*----------------------------------------------------------------------------\r | |
481 | //* \fn AT91F_USB_SendZlp\r | |
482 | //* \brief Send zero length packet through the control endpoint\r | |
483 | //*----------------------------------------------------------------------------\r | |
6e82300d | 484 | void AT91F_USB_SendZlp(AT91PS_UDP pUdp) {\r |
3a89d04c | 485 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r |
486 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) );\r | |
487 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
488 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 489 | }\r |
490 | \r | |
491 | //*----------------------------------------------------------------------------\r | |
492 | //* \fn AT91F_USB_SendStall\r | |
493 | //* \brief Stall the control endpoint\r | |
494 | //*----------------------------------------------------------------------------\r | |
6e82300d | 495 | void AT91F_USB_SendStall(AT91PS_UDP pUdp) {\r |
3a89d04c | 496 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL);\r |
497 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_ISOERROR) );\r | |
498 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);\r | |
499 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));\r | |
5bcc76c4 | 500 | }\r |
501 | \r | |
502 | //*----------------------------------------------------------------------------\r | |
503 | //* \fn AT91F_CDC_Enumerate\r | |
504 | //* \brief This function is a callback invoked when a SETUP packet is received\r | |
505 | //*----------------------------------------------------------------------------\r | |
6e82300d | 506 | void AT91F_CDC_Enumerate() {\r |
5bcc76c4 | 507 | byte_t bmRequestType, bRequest;\r |
508 | uint16_t wValue, wIndex, wLength, wStatus;\r | |
509 | \r | |
3a89d04c | 510 | if ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) )\r |
5bcc76c4 | 511 | return;\r |
512 | \r | |
513 | bmRequestType = pUdp->UDP_FDR[0];\r | |
514 | bRequest = pUdp->UDP_FDR[0];\r | |
515 | wValue = (pUdp->UDP_FDR[0] & 0xFF);\r | |
516 | wValue |= (pUdp->UDP_FDR[0] << 8);\r | |
517 | wIndex = (pUdp->UDP_FDR[0] & 0xFF);\r | |
518 | wIndex |= (pUdp->UDP_FDR[0] << 8);\r | |
519 | wLength = (pUdp->UDP_FDR[0] & 0xFF);\r | |
520 | wLength |= (pUdp->UDP_FDR[0] << 8);\r | |
521 | \r | |
522 | if (bmRequestType & 0x80) {\r | |
3a89d04c | 523 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_DIR);\r |
524 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_DIR) );\r | |
5bcc76c4 | 525 | }\r |
3a89d04c | 526 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RXSETUP);\r |
527 | while ( (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) );\r | |
5bcc76c4 | 528 | \r |
529 | // Handle supported standard device request Cf Table 9-3 in USB specification Rev 1.1\r | |
530 | switch ((bRequest << 8) | bmRequestType) {\r | |
531 | case STD_GET_DESCRIPTOR:\r | |
532 | if (wValue == 0x100) // Return Device Descriptor\r | |
533 | AT91F_USB_SendData(pUdp, devDescriptor, MIN(sizeof(devDescriptor), wLength));\r | |
534 | else if (wValue == 0x200) // Return Configuration Descriptor\r | |
535 | AT91F_USB_SendData(pUdp, cfgDescriptor, MIN(sizeof(cfgDescriptor), wLength));\r | |
1f42ccdd | 536 | else if ((wValue & 0xF00) == 0x300) { // Return String Descriptor\r |
537 | const char *strDescriptor = getStringDescriptor(wValue & 0xff);\r | |
538 | if (strDescriptor != NULL) {\r | |
539 | AT91F_USB_SendData(pUdp, strDescriptor, MIN(strDescriptor[0], wLength));\r | |
540 | } else {\r | |
541 | AT91F_USB_SendStall(pUdp);\r | |
542 | }\r | |
543 | }\r | |
5bcc76c4 | 544 | else\r |
545 | AT91F_USB_SendStall(pUdp);\r | |
546 | break;\r | |
547 | case STD_SET_ADDRESS:\r | |
548 | AT91F_USB_SendZlp(pUdp);\r | |
549 | pUdp->UDP_FADDR = (AT91C_UDP_FEN | wValue);\r | |
550 | pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0;\r | |
551 | break;\r | |
552 | case STD_SET_CONFIGURATION:\r | |
553 | btConfiguration = wValue;\r | |
554 | AT91F_USB_SendZlp(pUdp);\r | |
555 | pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;\r | |
556 | pUdp->UDP_CSR[1] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;\r | |
557 | pUdp->UDP_CSR[2] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;\r | |
558 | pUdp->UDP_CSR[3] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;\r | |
559 | break;\r | |
560 | case STD_GET_CONFIGURATION:\r | |
561 | AT91F_USB_SendData(pUdp, (char *) &(btConfiguration), sizeof(btConfiguration));\r | |
562 | break;\r | |
563 | case STD_GET_STATUS_ZERO:\r | |
564 | wStatus = 0;\r | |
565 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
566 | break;\r | |
567 | case STD_GET_STATUS_INTERFACE:\r | |
568 | wStatus = 0;\r | |
569 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
570 | break;\r | |
571 | case STD_GET_STATUS_ENDPOINT:\r | |
572 | wStatus = 0;\r | |
573 | wIndex &= 0x0F;\r | |
574 | if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= 3)) {\r | |
575 | wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r | |
576 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
577 | }\r | |
578 | else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == 0)) {\r | |
579 | wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r | |
580 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
581 | }\r | |
582 | else\r | |
583 | AT91F_USB_SendStall(pUdp);\r | |
584 | break;\r | |
585 | case STD_SET_FEATURE_ZERO:\r | |
586 | AT91F_USB_SendStall(pUdp);\r | |
587 | break;\r | |
588 | case STD_SET_FEATURE_INTERFACE:\r | |
589 | AT91F_USB_SendZlp(pUdp);\r | |
590 | break;\r | |
591 | case STD_SET_FEATURE_ENDPOINT:\r | |
592 | wIndex &= 0x0F;\r | |
593 | if ((wValue == 0) && wIndex && (wIndex <= 3)) {\r | |
594 | pUdp->UDP_CSR[wIndex] = 0;\r | |
595 | AT91F_USB_SendZlp(pUdp);\r | |
596 | }\r | |
597 | else\r | |
598 | AT91F_USB_SendStall(pUdp);\r | |
599 | break;\r | |
600 | case STD_CLEAR_FEATURE_ZERO:\r | |
601 | AT91F_USB_SendStall(pUdp);\r | |
602 | break;\r | |
603 | case STD_CLEAR_FEATURE_INTERFACE:\r | |
604 | AT91F_USB_SendZlp(pUdp);\r | |
605 | break;\r | |
606 | case STD_CLEAR_FEATURE_ENDPOINT:\r | |
607 | wIndex &= 0x0F;\r | |
608 | if ((wValue == 0) && wIndex && (wIndex <= 3)) {\r | |
609 | if (wIndex == 1)\r | |
610 | pUdp->UDP_CSR[1] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);\r | |
611 | else if (wIndex == 2)\r | |
612 | pUdp->UDP_CSR[2] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);\r | |
613 | else if (wIndex == 3)\r | |
614 | pUdp->UDP_CSR[3] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_ISO_IN);\r | |
615 | AT91F_USB_SendZlp(pUdp);\r | |
616 | }\r | |
617 | else\r | |
618 | AT91F_USB_SendStall(pUdp);\r | |
619 | break;\r | |
620 | \r | |
621 | // handle CDC class requests\r | |
622 | case SET_LINE_CODING:\r | |
3a89d04c | 623 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RX_DATA_BK0) );\r |
624 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r | |
5bcc76c4 | 625 | AT91F_USB_SendZlp(pUdp);\r |
626 | break;\r | |
627 | case GET_LINE_CODING:\r | |
628 | AT91F_USB_SendData(pUdp, (char *) &line, MIN(sizeof(line), wLength));\r | |
629 | break;\r | |
630 | case SET_CONTROL_LINE_STATE:\r | |
631 | btConnection = wValue;\r | |
632 | AT91F_USB_SendZlp(pUdp);\r | |
633 | break;\r | |
634 | default:\r | |
635 | AT91F_USB_SendStall(pUdp);\r | |
636 | break;\r | |
637 | }\r | |
638 | }\r |