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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_OUT 1\r |
5bcc76c4 | 42 | #define AT91C_EP_IN 2\r |
f194e429 | 43 | #define AT91C_EP_NOTIFY 3\r |
44 | #define AT91C_EP_OUT_SIZE 0x40\r | |
45 | #define AT91C_EP_IN_SIZE 0x40\r | |
5bcc76c4 | 46 | \r |
05b6b117 MF |
47 | // Language must always be 0.\r |
48 | #define STR_LANGUAGE_CODES 0x00\r | |
49 | #define STR_MANUFACTURER 0x01\r | |
50 | #define STR_PRODUCT 0x02\r | |
51 | \r | |
1f42ccdd | 52 | static const char devDescriptor[] = {\r |
5bcc76c4 | 53 | /* Device descriptor */\r |
54 | 0x12, // bLength\r | |
55 | 0x01, // bDescriptorType\r | |
1f42ccdd | 56 | 0x00,0x02, // Complies with USB Spec. Release (0200h = release 2.0)\r |
f194e429 | 57 | 0x02, // bDeviceClass: (Communication Device Class)\r |
58 | 0x00, // bDeviceSubclass: (unused at this time)\r | |
59 | 0x00, // bDeviceProtocol: (unused at this time)\r | |
5bcc76c4 | 60 | 0x08, // bMaxPacketSize0\r |
1f42ccdd | 61 | 0xc4,0x9a, // Vendor ID (0x9ac4 = J. Westhues)\r |
62 | 0x8f,0x4b, // Product ID (0x4b8f = Proxmark-3 RFID Instrument)\r | |
5bcc76c4 | 63 | 0x01,0x00, // Device release number (0001)\r |
05b6b117 MF |
64 | STR_MANUFACTURER, // iManufacturer\r |
65 | STR_PRODUCT, // iProduct\r | |
1f42ccdd | 66 | 0x00, // iSerialNumber\r |
5bcc76c4 | 67 | 0x01 // bNumConfigs\r |
68 | };\r | |
69 | \r | |
1f42ccdd | 70 | static const char cfgDescriptor[] = {\r |
5bcc76c4 | 71 | /* ============== CONFIGURATION 1 =========== */\r |
72 | /* Configuration 1 descriptor */\r | |
73 | 0x09, // CbLength\r | |
74 | 0x02, // CbDescriptorType\r | |
75 | 0x43, // CwTotalLength 2 EP + Control\r | |
76 | 0x00,\r | |
77 | 0x02, // CbNumInterfaces\r | |
78 | 0x01, // CbConfigurationValue\r | |
79 | 0x00, // CiConfiguration\r | |
f3803172 | 80 | 0x80, // CbmAttributes (Bus Powered)\r |
81 | 0x4B, // CMaxPower (150mA max current drawn from bus)\r | |
5bcc76c4 | 82 | \r |
f194e429 | 83 | /* Interface 0 Descriptor: Communication Class Interface */\r |
5bcc76c4 | 84 | 0x09, // bLength\r |
85 | 0x04, // bDescriptorType\r | |
86 | 0x00, // bInterfaceNumber\r | |
87 | 0x00, // bAlternateSetting\r | |
88 | 0x01, // bNumEndpoints\r | |
f194e429 | 89 | 0x02, // bInterfaceClass: Communication Interface Class\r |
90 | 0x02, // bInterfaceSubclass: Abstract Control Model\r | |
91 | 0x01, // bInterfaceProtocol: Common AT Commands, V.25ter\r | |
5bcc76c4 | 92 | 0x00, // iInterface\r |
93 | \r | |
94 | /* Header Functional Descriptor */\r | |
95 | 0x05, // bFunction Length\r | |
f194e429 | 96 | 0x24, // bDescriptor type: CS_INTERFACE\r |
97 | 0x00, // bDescriptor subtype: Header Functional Descriptor\r | |
5bcc76c4 | 98 | 0x10, // bcdCDC:1.1\r |
99 | 0x01,\r | |
100 | \r | |
101 | /* ACM Functional Descriptor */\r | |
102 | 0x04, // bFunctionLength\r | |
f194e429 | 103 | 0x24, // bDescriptor Type: CS_INTERFACE\r |
104 | 0x02, // bDescriptor Subtype: Abstract Control Management Functional Descriptor\r | |
105 | 0x02, // bmCapabilities: D1: Device supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State\r | |
5bcc76c4 | 106 | \r |
107 | /* Union Functional Descriptor */\r | |
108 | 0x05, // bFunctionLength\r | |
f194e429 | 109 | 0x24, // bDescriptorType: CS_INTERFACE\r |
110 | 0x06, // bDescriptor Subtype: Union Functional Descriptor\r | |
111 | 0x00, // bMasterInterface: Communication Class Interface\r | |
112 | 0x01, // bSlaveInterface0: Data Class Interface\r | |
5bcc76c4 | 113 | \r |
114 | /* Call Management Functional Descriptor */\r | |
115 | 0x05, // bFunctionLength\r | |
f194e429 | 116 | 0x24, // bDescriptor Type: CS_INTERFACE\r |
117 | 0x01, // bDescriptor Subtype: Call Management Functional Descriptor\r | |
118 | 0x00, // bmCapabilities: Device sends/receives call management information only over the Communication Class interface. Device does not handle call management itself\r | |
119 | 0x01, // bDataInterface: Data Class Interface 1\r | |
5bcc76c4 | 120 | \r |
121 | /* Endpoint 1 descriptor */\r | |
122 | 0x07, // bLength\r | |
123 | 0x05, // bDescriptorType\r | |
f194e429 | 124 | 0x83, // bEndpointAddress: Endpoint 03 - IN\r |
125 | 0x03, // bmAttributes: INT\r | |
126 | 0x08, // wMaxPacketSize: 8\r | |
5bcc76c4 | 127 | 0x00,\r |
128 | 0xFF, // bInterval\r | |
129 | \r | |
f194e429 | 130 | /* Interface 1 Descriptor: Data Class Interface */\r |
5bcc76c4 | 131 | 0x09, // bLength\r |
132 | 0x04, // bDescriptorType\r | |
133 | 0x01, // bInterfaceNumber\r | |
134 | 0x00, // bAlternateSetting\r | |
135 | 0x02, // bNumEndpoints\r | |
f194e429 | 136 | 0x0A, // bInterfaceClass: Data Interface Class\r |
137 | 0x00, // bInterfaceSubclass: not used\r | |
138 | 0x00, // bInterfaceProtocol: No class specific protocol required)\r | |
5bcc76c4 | 139 | 0x00, // iInterface\r |
140 | \r | |
5bcc76c4 | 141 | /* Endpoint 1 descriptor */\r |
142 | 0x07, // bLength\r | |
143 | 0x05, // bDescriptorType\r | |
f194e429 | 144 | 0x01, // bEndpointAddress: Endpoint 01 - OUT\r |
145 | 0x02, // bmAttributes: BULK\r | |
146 | AT91C_EP_OUT_SIZE, // wMaxPacketSize\r | |
5bcc76c4 | 147 | 0x00,\r |
148 | 0x00, // bInterval\r | |
149 | \r | |
150 | /* Endpoint 2 descriptor */\r | |
151 | 0x07, // bLength\r | |
152 | 0x05, // bDescriptorType\r | |
f194e429 | 153 | 0x82, // bEndpointAddress: Endpoint 02 - IN\r |
154 | 0x02, // bmAttributes: BULK\r | |
5bcc76c4 | 155 | AT91C_EP_IN_SIZE, // wMaxPacketSize\r |
156 | 0x00,\r | |
157 | 0x00 // bInterval\r | |
158 | };\r | |
159 | \r | |
1f42ccdd | 160 | static const char StrDescLanguageCodes[] = {\r |
161 | 4, // Length\r | |
162 | 0x03, // Type is string\r | |
163 | 0x09, 0x04 // supported language Code 0 = 0x0409 (English)\r | |
164 | };\r | |
05b6b117 MF |
165 | \r |
166 | // Note: ModemManager (Linux) ignores Proxmark3 devices by matching the\r | |
167 | // manufacturer string "proxmark.org". Don't change this.\r | |
1f42ccdd | 168 | static const char StrDescManufacturer[] = {\r |
169 | 26, // Length\r | |
5bcc76c4 | 170 | 0x03, // Type is string\r |
171 | 'p', 0x00,\r | |
172 | 'r', 0x00,\r | |
173 | 'o', 0x00,\r | |
174 | 'x', 0x00,\r | |
175 | 'm', 0x00,\r | |
176 | 'a', 0x00,\r | |
177 | 'r', 0x00,\r | |
178 | 'k', 0x00,\r | |
179 | '.', 0x00,\r | |
180 | 'o', 0x00,\r | |
181 | 'r', 0x00,\r | |
1f42ccdd | 182 | 'g', 0x00\r |
183 | };\r | |
184 | \r | |
185 | static const char StrDescProduct[] = {\r | |
f3dc6d59 | 186 | 20, // Length\r |
1f42ccdd | 187 | 0x03, // Type is string\r |
f3dc6d59 P |
188 | 'p', 0x00,\r |
189 | 'r', 0x00,\r | |
190 | 'o', 0x00,\r | |
191 | 'x', 0x00,\r | |
192 | 'm', 0x00,\r | |
193 | 'a', 0x00,\r | |
194 | 'r', 0x00,\r | |
195 | 'k', 0x00,\r | |
196 | '3', 0x00\r | |
1f42ccdd | 197 | };\r |
5bcc76c4 | 198 | \r |
1f42ccdd | 199 | const char* getStringDescriptor(uint8_t idx)\r |
200 | {\r | |
05b6b117 MF |
201 | switch (idx) {\r |
202 | case STR_LANGUAGE_CODES:\r | |
203 | return StrDescLanguageCodes;\r | |
204 | case STR_MANUFACTURER:\r | |
205 | return StrDescManufacturer;\r | |
206 | case STR_PRODUCT:\r | |
207 | return StrDescProduct;\r | |
208 | default:\r | |
209 | return NULL;\r | |
1f42ccdd | 210 | }\r |
211 | }\r | |
5bcc76c4 | 212 | \r |
3a89d04c | 213 | // Bitmap for all status bits in CSR which must be written as 1 to cause no effect\r |
214 | #define REG_NO_EFFECT_1_ALL AT91C_UDP_RX_DATA_BK0 | AT91C_UDP_RX_DATA_BK1 \\r | |
215 | |AT91C_UDP_STALLSENT | AT91C_UDP_RXSETUP \\r | |
216 | |AT91C_UDP_TXCOMP\r | |
217 | \r | |
218 | // Clear flags in the UDP_CSR register\r | |
219 | #define UDP_CLEAR_EP_FLAGS(endpoint, flags) { \\r | |
220 | volatile unsigned int reg; \\r | |
221 | reg = pUdp->UDP_CSR[(endpoint)]; \\r | |
222 | reg |= REG_NO_EFFECT_1_ALL; \\r | |
223 | reg &= ~(flags); \\r | |
224 | pUdp->UDP_CSR[(endpoint)] = reg; \\r | |
225 | } \r | |
226 | \r | |
227 | // Set flags in the UDP_CSR register\r | |
228 | #define UDP_SET_EP_FLAGS(endpoint, flags) { \\r | |
229 | volatile unsigned int reg; \\r | |
230 | reg = pUdp->UDP_CSR[(endpoint)]; \\r | |
231 | reg |= REG_NO_EFFECT_1_ALL; \\r | |
232 | reg |= (flags); \\r | |
233 | pUdp->UDP_CSR[(endpoint)] = reg; \\r | |
234 | }\r | |
235 | \r | |
236 | /* USB standard request codes */\r | |
5bcc76c4 | 237 | #define STD_GET_STATUS_ZERO 0x0080\r |
238 | #define STD_GET_STATUS_INTERFACE 0x0081\r | |
239 | #define STD_GET_STATUS_ENDPOINT 0x0082\r | |
240 | \r | |
241 | #define STD_CLEAR_FEATURE_ZERO 0x0100\r | |
242 | #define STD_CLEAR_FEATURE_INTERFACE 0x0101\r | |
243 | #define STD_CLEAR_FEATURE_ENDPOINT 0x0102\r | |
244 | \r | |
245 | #define STD_SET_FEATURE_ZERO 0x0300\r | |
246 | #define STD_SET_FEATURE_INTERFACE 0x0301\r | |
247 | #define STD_SET_FEATURE_ENDPOINT 0x0302\r | |
248 | \r | |
249 | #define STD_SET_ADDRESS 0x0500\r | |
250 | #define STD_GET_DESCRIPTOR 0x0680\r | |
251 | #define STD_SET_DESCRIPTOR 0x0700\r | |
252 | #define STD_GET_CONFIGURATION 0x0880\r | |
253 | #define STD_SET_CONFIGURATION 0x0900\r | |
254 | #define STD_GET_INTERFACE 0x0A81\r | |
255 | #define STD_SET_INTERFACE 0x0B01\r | |
256 | #define STD_SYNCH_FRAME 0x0C82\r | |
257 | \r | |
258 | /* CDC Class Specific Request Code */\r | |
259 | #define GET_LINE_CODING 0x21A1\r | |
260 | #define SET_LINE_CODING 0x2021\r | |
261 | #define SET_CONTROL_LINE_STATE 0x2221\r | |
262 | \r | |
263 | typedef struct {\r | |
264 | unsigned int dwDTERRate;\r | |
265 | char bCharFormat;\r | |
266 | char bParityType;\r | |
267 | char bDataBits;\r | |
268 | } AT91S_CDC_LINE_CODING, *AT91PS_CDC_LINE_CODING;\r | |
269 | \r | |
270 | AT91S_CDC_LINE_CODING line = {\r | |
271 | 115200, // baudrate\r | |
272 | 0, // 1 Stop Bit\r | |
273 | 0, // None Parity\r | |
274 | 8}; // 8 Data bits\r | |
275 | \r | |
f194e429 | 276 | \r |
5bcc76c4 | 277 | void AT91F_CDC_Enumerate();\r |
278 | \r | |
279 | AT91PS_UDP pUdp = AT91C_BASE_UDP;\r | |
280 | byte_t btConfiguration = 0;\r | |
281 | byte_t btConnection = 0;\r | |
282 | byte_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;\r | |
283 | \r | |
f194e429 | 284 | \r |
6e82300d | 285 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 286 | //* \fn usb_disable\r |
6e82300d | 287 | //* \brief This function deactivates the USB device\r |
288 | //*----------------------------------------------------------------------------\r | |
289 | void usb_disable() {\r | |
f194e429 | 290 | // Disconnect the USB device\r |
291 | AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;\r | |
292 | \r | |
293 | // Clear all lingering interrupts\r | |
294 | if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {\r | |
295 | pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r | |
296 | }\r | |
6e82300d | 297 | }\r |
298 | \r | |
f194e429 | 299 | \r |
5bcc76c4 | 300 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 301 | //* \fn usb_enable\r |
5bcc76c4 | 302 | //* \brief This function Activates the USB device\r |
303 | //*----------------------------------------------------------------------------\r | |
6e82300d | 304 | void usb_enable() {\r |
f194e429 | 305 | // Set the PLL USB Divider\r |
306 | AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\r | |
307 | \r | |
308 | // Specific Chip USB Initialisation\r | |
309 | // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock\r | |
310 | AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;\r | |
311 | AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);\r | |
312 | \r | |
313 | // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO\r | |
314 | // Set in PIO mode and Configure in Output\r | |
315 | AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode\r | |
79a73ab2 | 316 | AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output\r |
f194e429 | 317 | \r |
318 | // Clear for set the Pullup resistor\r | |
79a73ab2 | 319 | AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;\r |
6e82300d | 320 | \r |
f194e429 | 321 | // Disconnect and reconnect USB controller for 100ms\r |
322 | usb_disable();\r | |
323 | \r | |
324 | // Wait for a short while\r | |
325 | for (volatile size_t i=0; i<0x100000; i++);\r | |
326 | \r | |
327 | // Reconnect USB reconnect\r | |
328 | AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;\r | |
329 | AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;\r | |
5bcc76c4 | 330 | }\r |
331 | \r | |
f194e429 | 332 | \r |
5bcc76c4 | 333 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 334 | //* \fn usb_check\r |
5bcc76c4 | 335 | //* \brief Test if the device is configured and handle enumeration\r |
336 | //*----------------------------------------------------------------------------\r | |
6e82300d | 337 | bool usb_check() {\r |
5bcc76c4 | 338 | AT91_REG isr = pUdp->UDP_ISR;\r |
339 | \r | |
340 | if (isr & AT91C_UDP_ENDBUSRES) {\r | |
341 | pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;\r | |
342 | // reset all endpoints\r | |
343 | pUdp->UDP_RSTEP = (unsigned int)-1;\r | |
344 | pUdp->UDP_RSTEP = 0;\r | |
345 | // Enable the function\r | |
346 | pUdp->UDP_FADDR = AT91C_UDP_FEN;\r | |
347 | // Configure endpoint 0\r | |
3a89d04c | 348 | pUdp->UDP_CSR[AT91C_EP_CONTROL] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);\r |
f194e429 | 349 | } else if (isr & AT91C_UDP_EPINT0) {\r |
5bcc76c4 | 350 | pUdp->UDP_ICR = AT91C_UDP_EPINT0;\r |
351 | AT91F_CDC_Enumerate();\r | |
352 | }\r | |
353 | return (btConfiguration) ? true : false;\r | |
354 | }\r | |
355 | \r | |
356 | \r | |
357 | bool usb_poll()\r | |
358 | {\r | |
f194e429 | 359 | if (!usb_check()) return false;\r |
360 | return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);\r | |
5bcc76c4 | 361 | }\r |
362 | \r | |
f194e429 | 363 | \r |
83f3f8ac MHS |
364 | /**\r |
365 | In github PR #129, some users appears to get a false positive from\r | |
366 | usb_poll, which returns true, but the usb_read operation\r | |
367 | still returns 0.\r | |
368 | This check is basically the same as above, but also checks\r | |
369 | that the length available to read is non-zero, thus hopefully fixes the\r | |
370 | bug.\r | |
371 | **/\r | |
372 | bool usb_poll_validate_length()\r | |
373 | {\r | |
83f3f8ac MHS |
374 | if (!usb_check()) return false;\r |
375 | if (!(pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;\r | |
376 | return (pUdp->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;\r | |
377 | }\r | |
378 | \r | |
5bcc76c4 | 379 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 380 | //* \fn usb_read\r |
5bcc76c4 | 381 | //* \brief Read available data from Endpoint OUT\r |
382 | //*----------------------------------------------------------------------------\r | |
6e82300d | 383 | uint32_t usb_read(byte_t* data, size_t len) {\r |
d2deaf7b | 384 | byte_t bank = btReceiveBank;\r |
5bcc76c4 | 385 | uint32_t packetSize, nbBytesRcv = 0;\r |
d2deaf7b | 386 | uint32_t time_out = 0;\r |
5bcc76c4 | 387 | \r |
23b598ee | 388 | while (len) {\r |
5bcc76c4 | 389 | if (!usb_check()) break;\r |
390 | \r | |
391 | if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {\r | |
392 | packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r | |
d2deaf7b | 393 | len -= packetSize;\r |
5bcc76c4 | 394 | while(packetSize--)\r |
395 | data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];\r | |
3a89d04c | 396 | UDP_CLEAR_EP_FLAGS(AT91C_EP_OUT, bank);\r |
23b598ee | 397 | if (bank == AT91C_UDP_RX_DATA_BK0) {\r |
5bcc76c4 | 398 | bank = AT91C_UDP_RX_DATA_BK1;\r |
d2deaf7b | 399 | } else {\r |
5bcc76c4 | 400 | bank = AT91C_UDP_RX_DATA_BK0;\r |
d2deaf7b | 401 | }\r |
5bcc76c4 | 402 | }\r |
d2deaf7b | 403 | if (time_out++ == 0x1fff) break;\r |
5bcc76c4 | 404 | }\r |
405 | \r | |
406 | btReceiveBank = bank;\r | |
407 | return nbBytesRcv;\r | |
408 | }\r | |
409 | \r | |
f194e429 | 410 | \r |
5bcc76c4 | 411 | //*----------------------------------------------------------------------------\r |
79a73ab2 | 412 | //* \fn usb_write\r |
5bcc76c4 | 413 | //* \brief Send through endpoint 2\r |
414 | //*----------------------------------------------------------------------------\r | |
6e82300d | 415 | uint32_t usb_write(const byte_t* data, const size_t len) {\r |
f194e429 | 416 | size_t length = len;\r |
5bcc76c4 | 417 | uint32_t cpt = 0;\r |
418 | \r | |
f194e429 | 419 | if (!length) return 0;\r |
420 | if (!usb_check()) return 0;\r | |
421 | \r | |
5bcc76c4 | 422 | // Send the first packet\r |
f194e429 | 423 | cpt = MIN(length, AT91C_EP_IN_SIZE);\r |
5bcc76c4 | 424 | length -= cpt;\r |
f194e429 | 425 | while (cpt--) {\r |
426 | pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r | |
427 | }\r | |
3a89d04c | 428 | UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 429 | \r |
430 | while (length) {\r | |
f194e429 | 431 | // Fill the next bank\r |
432 | cpt = MIN(length, AT91C_EP_IN_SIZE);\r | |
5bcc76c4 | 433 | length -= cpt;\r |
f194e429 | 434 | while (cpt--) {\r |
435 | pUdp->UDP_FDR[AT91C_EP_IN] = *data++;\r | |
436 | }\r | |
437 | // Wait for the previous bank to be sent\r | |
5bcc76c4 | 438 | while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r |
439 | if (!usb_check()) return length;\r | |
f194e429 | 440 | }\r |
3a89d04c | 441 | UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r |
5bcc76c4 | 442 | while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r |
3a89d04c | 443 | UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 444 | }\r |
f194e429 | 445 | \r |
5bcc76c4 | 446 | // Wait for the end of transfer\r |
447 | while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r | |
448 | if (!usb_check()) return length;\r | |
f194e429 | 449 | }\r |
450 | \r | |
3a89d04c | 451 | UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);\r |
5bcc76c4 | 452 | while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r |
453 | \r | |
454 | return length;\r | |
455 | }\r | |
456 | \r | |
f194e429 | 457 | \r |
5bcc76c4 | 458 | //*----------------------------------------------------------------------------\r |
459 | //* \fn AT91F_USB_SendData\r | |
460 | //* \brief Send Data through the control endpoint\r | |
461 | //*----------------------------------------------------------------------------\r | |
5ee70129 | 462 | unsigned int csrTab[100] = {0x00};\r |
5bcc76c4 | 463 | unsigned char csrIdx = 0;\r |
464 | \r | |
6e82300d | 465 | static void AT91F_USB_SendData(AT91PS_UDP pUdp, const char *pData, uint32_t length) {\r |
5bcc76c4 | 466 | uint32_t cpt = 0;\r |
467 | AT91_REG csr;\r | |
468 | \r | |
469 | do {\r | |
470 | cpt = MIN(length, 8);\r | |
471 | length -= cpt;\r | |
472 | \r | |
473 | while (cpt--)\r | |
474 | pUdp->UDP_FDR[0] = *pData++;\r | |
475 | \r | |
3a89d04c | 476 | if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r |
477 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
478 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 479 | }\r |
480 | \r | |
3a89d04c | 481 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r |
5bcc76c4 | 482 | do {\r |
3a89d04c | 483 | csr = pUdp->UDP_CSR[AT91C_EP_CONTROL];\r |
5bcc76c4 | 484 | \r |
485 | // Data IN stage has been stopped by a status OUT\r | |
486 | if (csr & AT91C_UDP_RX_DATA_BK0) {\r | |
3a89d04c | 487 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r |
5bcc76c4 | 488 | return;\r |
489 | }\r | |
490 | } while ( !(csr & AT91C_UDP_TXCOMP) );\r | |
491 | \r | |
492 | } while (length);\r | |
493 | \r | |
3a89d04c | 494 | if (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) {\r |
495 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
496 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 497 | }\r |
498 | }\r | |
499 | \r | |
f194e429 | 500 | \r |
5bcc76c4 | 501 | //*----------------------------------------------------------------------------\r |
502 | //* \fn AT91F_USB_SendZlp\r | |
503 | //* \brief Send zero length packet through the control endpoint\r | |
504 | //*----------------------------------------------------------------------------\r | |
6e82300d | 505 | void AT91F_USB_SendZlp(AT91PS_UDP pUdp) {\r |
3a89d04c | 506 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXPKTRDY);\r |
507 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP) );\r | |
508 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_TXCOMP);\r | |
509 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);\r | |
5bcc76c4 | 510 | }\r |
511 | \r | |
f194e429 | 512 | \r |
5bcc76c4 | 513 | //*----------------------------------------------------------------------------\r |
514 | //* \fn AT91F_USB_SendStall\r | |
515 | //* \brief Stall the control endpoint\r | |
516 | //*----------------------------------------------------------------------------\r | |
6e82300d | 517 | void AT91F_USB_SendStall(AT91PS_UDP pUdp) {\r |
3a89d04c | 518 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL);\r |
519 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_ISOERROR) );\r | |
520 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR);\r | |
521 | while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));\r | |
5bcc76c4 | 522 | }\r |
523 | \r | |
f194e429 | 524 | \r |
5bcc76c4 | 525 | //*----------------------------------------------------------------------------\r |
526 | //* \fn AT91F_CDC_Enumerate\r | |
527 | //* \brief This function is a callback invoked when a SETUP packet is received\r | |
528 | //*----------------------------------------------------------------------------\r | |
6e82300d | 529 | void AT91F_CDC_Enumerate() {\r |
5bcc76c4 | 530 | byte_t bmRequestType, bRequest;\r |
531 | uint16_t wValue, wIndex, wLength, wStatus;\r | |
532 | \r | |
3a89d04c | 533 | if ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) )\r |
5bcc76c4 | 534 | return;\r |
535 | \r | |
f194e429 | 536 | bmRequestType = pUdp->UDP_FDR[AT91C_EP_CONTROL];\r |
537 | bRequest = pUdp->UDP_FDR[AT91C_EP_CONTROL];\r | |
538 | wValue = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r | |
539 | wValue |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r | |
540 | wIndex = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r | |
541 | wIndex |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r | |
542 | wLength = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);\r | |
543 | wLength |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);\r | |
5bcc76c4 | 544 | \r |
f194e429 | 545 | if (bmRequestType & 0x80) { // Data Phase Transfer Direction Device to Host\r |
3a89d04c | 546 | UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_DIR);\r |
547 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_DIR) );\r | |
5bcc76c4 | 548 | }\r |
3a89d04c | 549 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RXSETUP);\r |
550 | while ( (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) );\r | |
5bcc76c4 | 551 | \r |
552 | // Handle supported standard device request Cf Table 9-3 in USB specification Rev 1.1\r | |
553 | switch ((bRequest << 8) | bmRequestType) {\r | |
554 | case STD_GET_DESCRIPTOR:\r | |
555 | if (wValue == 0x100) // Return Device Descriptor\r | |
556 | AT91F_USB_SendData(pUdp, devDescriptor, MIN(sizeof(devDescriptor), wLength));\r | |
557 | else if (wValue == 0x200) // Return Configuration Descriptor\r | |
558 | AT91F_USB_SendData(pUdp, cfgDescriptor, MIN(sizeof(cfgDescriptor), wLength));\r | |
1f42ccdd | 559 | else if ((wValue & 0xF00) == 0x300) { // Return String Descriptor\r |
560 | const char *strDescriptor = getStringDescriptor(wValue & 0xff);\r | |
561 | if (strDescriptor != NULL) {\r | |
562 | AT91F_USB_SendData(pUdp, strDescriptor, MIN(strDescriptor[0], wLength));\r | |
563 | } else {\r | |
13c25f89 | 564 | AT91F_USB_SendStall(pUdp);\r |
1f42ccdd | 565 | }\r |
566 | }\r | |
5bcc76c4 | 567 | else\r |
568 | AT91F_USB_SendStall(pUdp);\r | |
569 | break;\r | |
570 | case STD_SET_ADDRESS:\r | |
571 | AT91F_USB_SendZlp(pUdp);\r | |
572 | pUdp->UDP_FADDR = (AT91C_UDP_FEN | wValue);\r | |
573 | pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0;\r | |
574 | break;\r | |
575 | case STD_SET_CONFIGURATION:\r | |
576 | btConfiguration = wValue;\r | |
577 | AT91F_USB_SendZlp(pUdp);\r | |
578 | pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;\r | |
f194e429 | 579 | pUdp->UDP_CSR[AT91C_EP_OUT] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;\r |
580 | pUdp->UDP_CSR[AT91C_EP_IN] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;\r | |
581 | pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;\r | |
5bcc76c4 | 582 | break;\r |
583 | case STD_GET_CONFIGURATION:\r | |
584 | AT91F_USB_SendData(pUdp, (char *) &(btConfiguration), sizeof(btConfiguration));\r | |
585 | break;\r | |
586 | case STD_GET_STATUS_ZERO:\r | |
f194e429 | 587 | wStatus = 0; // Device is Bus powered, remote wakeup disabled\r |
5bcc76c4 | 588 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r |
589 | break;\r | |
590 | case STD_GET_STATUS_INTERFACE:\r | |
f194e429 | 591 | wStatus = 0; // reserved for future use\r |
5bcc76c4 | 592 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r |
593 | break;\r | |
594 | case STD_GET_STATUS_ENDPOINT:\r | |
595 | wStatus = 0;\r | |
596 | wIndex &= 0x0F;\r | |
f194e429 | 597 | if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= AT91C_EP_NOTIFY)) {\r |
5bcc76c4 | 598 | wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r |
599 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
600 | }\r | |
f194e429 | 601 | else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == AT91C_EP_CONTROL)) {\r |
5bcc76c4 | 602 | wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;\r |
603 | AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));\r | |
604 | }\r | |
605 | else\r | |
606 | AT91F_USB_SendStall(pUdp);\r | |
607 | break;\r | |
608 | case STD_SET_FEATURE_ZERO:\r | |
609 | AT91F_USB_SendStall(pUdp);\r | |
610 | break;\r | |
611 | case STD_SET_FEATURE_INTERFACE:\r | |
612 | AT91F_USB_SendZlp(pUdp);\r | |
613 | break;\r | |
614 | case STD_SET_FEATURE_ENDPOINT:\r | |
615 | wIndex &= 0x0F;\r | |
f194e429 | 616 | if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r |
5bcc76c4 | 617 | pUdp->UDP_CSR[wIndex] = 0;\r |
618 | AT91F_USB_SendZlp(pUdp);\r | |
619 | }\r | |
620 | else\r | |
621 | AT91F_USB_SendStall(pUdp);\r | |
622 | break;\r | |
623 | case STD_CLEAR_FEATURE_ZERO:\r | |
624 | AT91F_USB_SendStall(pUdp);\r | |
625 | break;\r | |
626 | case STD_CLEAR_FEATURE_INTERFACE:\r | |
627 | AT91F_USB_SendZlp(pUdp);\r | |
628 | break;\r | |
629 | case STD_CLEAR_FEATURE_ENDPOINT:\r | |
630 | wIndex &= 0x0F;\r | |
f194e429 | 631 | if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {\r |
632 | if (wIndex == AT91C_EP_OUT)\r | |
633 | pUdp->UDP_CSR[AT91C_EP_OUT] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);\r | |
634 | else if (wIndex == AT91C_EP_IN)\r | |
635 | pUdp->UDP_CSR[AT91C_EP_IN] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);\r | |
636 | else if (wIndex == AT91C_EP_NOTIFY)\r | |
637 | pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN);\r | |
5bcc76c4 | 638 | AT91F_USB_SendZlp(pUdp);\r |
639 | }\r | |
640 | else\r | |
641 | AT91F_USB_SendStall(pUdp);\r | |
642 | break;\r | |
643 | \r | |
644 | // handle CDC class requests\r | |
645 | case SET_LINE_CODING:\r | |
3a89d04c | 646 | while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RX_DATA_BK0) );\r |
647 | UDP_CLEAR_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_RX_DATA_BK0);\r | |
5bcc76c4 | 648 | AT91F_USB_SendZlp(pUdp);\r |
649 | break;\r | |
650 | case GET_LINE_CODING:\r | |
651 | AT91F_USB_SendData(pUdp, (char *) &line, MIN(sizeof(line), wLength));\r | |
652 | break;\r | |
653 | case SET_CONTROL_LINE_STATE:\r | |
654 | btConnection = wValue;\r | |
655 | AT91F_USB_SendZlp(pUdp);\r | |
656 | break;\r | |
657 | default:\r | |
658 | AT91F_USB_SendStall(pUdp);\r | |
659 | break;\r | |
660 | }\r | |
661 | }\r |