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Diffstat (limited to 'protocol/vusb/usbdrv/usbdrv.h')
| -rw-r--r-- | protocol/vusb/usbdrv/usbdrv.h | 735 |
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diff --git a/protocol/vusb/usbdrv/usbdrv.h b/protocol/vusb/usbdrv/usbdrv.h new file mode 100644 index 000000000..3a78f307b --- /dev/null +++ b/protocol/vusb/usbdrv/usbdrv.h | |||
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| 1 | /* Name: usbdrv.h | ||
| 2 | * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers | ||
| 3 | * Author: Christian Starkjohann | ||
| 4 | * Creation Date: 2004-12-29 | ||
| 5 | * Tabsize: 4 | ||
| 6 | * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH | ||
| 7 | * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) | ||
| 8 | * This Revision: $Id: usbdrv.h 793 2010-07-15 15:58:11Z cs $ | ||
| 9 | */ | ||
| 10 | |||
| 11 | #ifndef __usbdrv_h_included__ | ||
| 12 | #define __usbdrv_h_included__ | ||
| 13 | #include "usbconfig.h" | ||
| 14 | #include "usbportability.h" | ||
| 15 | |||
| 16 | /* | ||
| 17 | Hardware Prerequisites: | ||
| 18 | ======================= | ||
| 19 | USB lines D+ and D- MUST be wired to the same I/O port. We recommend that D+ | ||
| 20 | triggers the interrupt (best achieved by using INT0 for D+), but it is also | ||
| 21 | possible to trigger the interrupt from D-. If D- is used, interrupts are also | ||
| 22 | triggered by SOF packets. D- requires a pull-up of 1.5k to +3.5V (and the | ||
| 23 | device must be powered at 3.5V) to identify as low-speed USB device. A | ||
| 24 | pull-down or pull-up of 1M SHOULD be connected from D+ to +3.5V to prevent | ||
| 25 | interference when no USB master is connected. If you use Zener diodes to limit | ||
| 26 | the voltage on D+ and D-, you MUST use a pull-down resistor, not a pull-up. | ||
| 27 | We use D+ as interrupt source and not D- because it does not trigger on | ||
| 28 | keep-alive and RESET states. If you want to count keep-alive events with | ||
| 29 | USB_COUNT_SOF, you MUST use D- as an interrupt source. | ||
| 30 | |||
| 31 | As a compile time option, the 1.5k pull-up resistor on D- can be made | ||
| 32 | switchable to allow the device to disconnect at will. See the definition of | ||
| 33 | usbDeviceConnect() and usbDeviceDisconnect() further down in this file. | ||
| 34 | |||
| 35 | Please adapt the values in usbconfig.h according to your hardware! | ||
| 36 | |||
| 37 | The device MUST be clocked at exactly 12 MHz, 15 MHz, 16 MHz or 20 MHz | ||
| 38 | or at 12.8 MHz resp. 16.5 MHz +/- 1%. See usbconfig-prototype.h for details. | ||
| 39 | |||
| 40 | |||
| 41 | Limitations: | ||
| 42 | ============ | ||
| 43 | Robustness with respect to communication errors: | ||
| 44 | The driver assumes error-free communication. It DOES check for errors in | ||
| 45 | the PID, but does NOT check bit stuffing errors, SE0 in middle of a byte, | ||
| 46 | token CRC (5 bit) and data CRC (16 bit). CRC checks can not be performed due | ||
| 47 | to timing constraints: We must start sending a reply within 7 bit times. | ||
| 48 | Bit stuffing and misplaced SE0 would have to be checked in real-time, but CPU | ||
| 49 | performance does not permit that. The driver does not check Data0/Data1 | ||
| 50 | toggling, but application software can implement the check. | ||
| 51 | |||
| 52 | Input characteristics: | ||
| 53 | Since no differential receiver circuit is used, electrical interference | ||
| 54 | robustness may suffer. The driver samples only one of the data lines with | ||
| 55 | an ordinary I/O pin's input characteristics. However, since this is only a | ||
| 56 | low speed USB implementation and the specification allows for 8 times the | ||
| 57 | bit rate over the same hardware, we should be on the safe side. Even the spec | ||
| 58 | requires detection of asymmetric states at high bit rate for SE0 detection. | ||
| 59 | |||
| 60 | Number of endpoints: | ||
| 61 | The driver supports the following endpoints: | ||
| 62 | |||
| 63 | - Endpoint 0, the default control endpoint. | ||
| 64 | - Any number of interrupt- or bulk-out endpoints. The data is sent to | ||
| 65 | usbFunctionWriteOut() and USB_CFG_IMPLEMENT_FN_WRITEOUT must be defined | ||
| 66 | to 1 to activate this feature. The endpoint number can be found in the | ||
| 67 | global variable 'usbRxToken'. | ||
| 68 | - One default interrupt- or bulk-in endpoint. This endpoint is used for | ||
| 69 | interrupt- or bulk-in transfers which are not handled by any other endpoint. | ||
| 70 | You must define USB_CFG_HAVE_INTRIN_ENDPOINT in order to activate this | ||
| 71 | feature and call usbSetInterrupt() to send interrupt/bulk data. | ||
| 72 | - One additional interrupt- or bulk-in endpoint. This was endpoint 3 in | ||
| 73 | previous versions of this driver but can now be configured to any endpoint | ||
| 74 | number. You must define USB_CFG_HAVE_INTRIN_ENDPOINT3 in order to activate | ||
| 75 | this feature and call usbSetInterrupt3() to send interrupt/bulk data. The | ||
| 76 | endpoint number can be set with USB_CFG_EP3_NUMBER. | ||
| 77 | |||
| 78 | Please note that the USB standard forbids bulk endpoints for low speed devices! | ||
| 79 | Most operating systems allow them anyway, but the AVR will spend 90% of the CPU | ||
| 80 | time in the USB interrupt polling for bulk data. | ||
| 81 | |||
| 82 | Maximum data payload: | ||
| 83 | Data payload of control in and out transfers may be up to 254 bytes. In order | ||
| 84 | to accept payload data of out transfers, you need to implement | ||
| 85 | 'usbFunctionWrite()'. | ||
| 86 | |||
| 87 | USB Suspend Mode supply current: | ||
| 88 | The USB standard limits power consumption to 500uA when the bus is in suspend | ||
| 89 | mode. This is not a problem for self-powered devices since they don't need | ||
| 90 | bus power anyway. Bus-powered devices can achieve this only by putting the | ||
| 91 | CPU in sleep mode. The driver does not implement suspend handling by itself. | ||
| 92 | However, the application may implement activity monitoring and wakeup from | ||
| 93 | sleep. The host sends regular SE0 states on the bus to keep it active. These | ||
| 94 | SE0 states can be detected by using D- as the interrupt source. Define | ||
| 95 | USB_COUNT_SOF to 1 and use the global variable usbSofCount to check for bus | ||
| 96 | activity. | ||
| 97 | |||
| 98 | Operation without an USB master: | ||
| 99 | The driver behaves neutral without connection to an USB master if D- reads | ||
| 100 | as 1. To avoid spurious interrupts, we recommend a high impedance (e.g. 1M) | ||
| 101 | pull-down or pull-up resistor on D+ (interrupt). If Zener diodes are used, | ||
| 102 | use a pull-down. If D- becomes statically 0, the driver may block in the | ||
| 103 | interrupt routine. | ||
| 104 | |||
| 105 | Interrupt latency: | ||
| 106 | The application must ensure that the USB interrupt is not disabled for more | ||
| 107 | than 25 cycles (this is for 12 MHz, faster clocks allow longer latency). | ||
| 108 | This implies that all interrupt routines must either have the "ISR_NOBLOCK" | ||
| 109 | attribute set (see "avr/interrupt.h") or be written in assembler with "sei" | ||
| 110 | as the first instruction. | ||
| 111 | |||
| 112 | Maximum interrupt duration / CPU cycle consumption: | ||
| 113 | The driver handles all USB communication during the interrupt service | ||
| 114 | routine. The routine will not return before an entire USB message is received | ||
| 115 | and the reply is sent. This may be up to ca. 1200 cycles @ 12 MHz (= 100us) if | ||
| 116 | the host conforms to the standard. The driver will consume CPU cycles for all | ||
| 117 | USB messages, even if they address another (low-speed) device on the same bus. | ||
| 118 | |||
| 119 | */ | ||
| 120 | |||
| 121 | /* ------------------------------------------------------------------------- */ | ||
| 122 | /* --------------------------- Module Interface ---------------------------- */ | ||
| 123 | /* ------------------------------------------------------------------------- */ | ||
| 124 | |||
| 125 | #define USBDRV_VERSION 20100715 | ||
| 126 | /* This define uniquely identifies a driver version. It is a decimal number | ||
| 127 | * constructed from the driver's release date in the form YYYYMMDD. If the | ||
| 128 | * driver's behavior or interface changes, you can use this constant to | ||
| 129 | * distinguish versions. If it is not defined, the driver's release date is | ||
| 130 | * older than 2006-01-25. | ||
| 131 | */ | ||
| 132 | |||
| 133 | |||
| 134 | #ifndef USB_PUBLIC | ||
| 135 | #define USB_PUBLIC | ||
| 136 | #endif | ||
| 137 | /* USB_PUBLIC is used as declaration attribute for all functions exported by | ||
| 138 | * the USB driver. The default is no attribute (see above). You may define it | ||
| 139 | * to static either in usbconfig.h or from the command line if you include | ||
| 140 | * usbdrv.c instead of linking against it. Including the C module of the driver | ||
| 141 | * directly in your code saves a couple of bytes in flash memory. | ||
| 142 | */ | ||
| 143 | |||
| 144 | #ifndef __ASSEMBLER__ | ||
| 145 | #ifndef uchar | ||
| 146 | #define uchar unsigned char | ||
| 147 | #endif | ||
| 148 | #ifndef schar | ||
| 149 | #define schar signed char | ||
| 150 | #endif | ||
| 151 | /* shortcuts for well defined 8 bit integer types */ | ||
| 152 | |||
| 153 | #if USB_CFG_LONG_TRANSFERS /* if more than 254 bytes transfer size required */ | ||
| 154 | # define usbMsgLen_t unsigned | ||
| 155 | #else | ||
| 156 | # define usbMsgLen_t uchar | ||
| 157 | #endif | ||
| 158 | /* usbMsgLen_t is the data type used for transfer lengths. By default, it is | ||
| 159 | * defined to uchar, allowing a maximum of 254 bytes (255 is reserved for | ||
| 160 | * USB_NO_MSG below). If the usbconfig.h defines USB_CFG_LONG_TRANSFERS to 1, | ||
| 161 | * a 16 bit data type is used, allowing up to 16384 bytes (the rest is used | ||
| 162 | * for flags in the descriptor configuration). | ||
| 163 | */ | ||
| 164 | #define USB_NO_MSG ((usbMsgLen_t)-1) /* constant meaning "no message" */ | ||
| 165 | |||
| 166 | struct usbRequest; /* forward declaration */ | ||
| 167 | |||
| 168 | USB_PUBLIC void usbInit(void); | ||
| 169 | /* This function must be called before interrupts are enabled and the main | ||
| 170 | * loop is entered. We exepct that the PORT and DDR bits for D+ and D- have | ||
| 171 | * not been changed from their default status (which is 0). If you have changed | ||
| 172 | * them, set both back to 0 (configure them as input with no internal pull-up). | ||
| 173 | */ | ||
| 174 | USB_PUBLIC void usbPoll(void); | ||
| 175 | /* This function must be called at regular intervals from the main loop. | ||
| 176 | * Maximum delay between calls is somewhat less than 50ms (USB timeout for | ||
| 177 | * accepting a Setup message). Otherwise the device will not be recognized. | ||
| 178 | * Please note that debug outputs through the UART take ~ 0.5ms per byte | ||
| 179 | * at 19200 bps. | ||
| 180 | */ | ||
| 181 | extern uchar *usbMsgPtr; | ||
| 182 | /* This variable may be used to pass transmit data to the driver from the | ||
| 183 | * implementation of usbFunctionWrite(). It is also used internally by the | ||
| 184 | * driver for standard control requests. | ||
| 185 | */ | ||
| 186 | USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8]); | ||
| 187 | /* This function is called when the driver receives a SETUP transaction from | ||
| 188 | * the host which is not answered by the driver itself (in practice: class and | ||
| 189 | * vendor requests). All control transfers start with a SETUP transaction where | ||
| 190 | * the host communicates the parameters of the following (optional) data | ||
| 191 | * transfer. The SETUP data is available in the 'data' parameter which can | ||
| 192 | * (and should) be casted to 'usbRequest_t *' for a more user-friendly access | ||
| 193 | * to parameters. | ||
| 194 | * | ||
| 195 | * If the SETUP indicates a control-in transfer, you should provide the | ||
| 196 | * requested data to the driver. There are two ways to transfer this data: | ||
| 197 | * (1) Set the global pointer 'usbMsgPtr' to the base of the static RAM data | ||
| 198 | * block and return the length of the data in 'usbFunctionSetup()'. The driver | ||
| 199 | * will handle the rest. Or (2) return USB_NO_MSG in 'usbFunctionSetup()'. The | ||
| 200 | * driver will then call 'usbFunctionRead()' when data is needed. See the | ||
| 201 | * documentation for usbFunctionRead() for details. | ||
| 202 | * | ||
| 203 | * If the SETUP indicates a control-out transfer, the only way to receive the | ||
| 204 | * data from the host is through the 'usbFunctionWrite()' call. If you | ||
| 205 | * implement this function, you must return USB_NO_MSG in 'usbFunctionSetup()' | ||
| 206 | * to indicate that 'usbFunctionWrite()' should be used. See the documentation | ||
| 207 | * of this function for more information. If you just want to ignore the data | ||
| 208 | * sent by the host, return 0 in 'usbFunctionSetup()'. | ||
| 209 | * | ||
| 210 | * Note that calls to the functions usbFunctionRead() and usbFunctionWrite() | ||
| 211 | * are only done if enabled by the configuration in usbconfig.h. | ||
| 212 | */ | ||
| 213 | USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq); | ||
| 214 | /* You need to implement this function ONLY if you provide USB descriptors at | ||
| 215 | * runtime (which is an expert feature). It is very similar to | ||
| 216 | * usbFunctionSetup() above, but it is called only to request USB descriptor | ||
| 217 | * data. See the documentation of usbFunctionSetup() above for more info. | ||
| 218 | */ | ||
| 219 | #if USB_CFG_HAVE_INTRIN_ENDPOINT | ||
| 220 | USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len); | ||
| 221 | /* This function sets the message which will be sent during the next interrupt | ||
| 222 | * IN transfer. The message is copied to an internal buffer and must not exceed | ||
| 223 | * a length of 8 bytes. The message may be 0 bytes long just to indicate the | ||
| 224 | * interrupt status to the host. | ||
| 225 | * If you need to transfer more bytes, use a control read after the interrupt. | ||
| 226 | */ | ||
| 227 | #define usbInterruptIsReady() (usbTxLen1 & 0x10) | ||
| 228 | /* This macro indicates whether the last interrupt message has already been | ||
| 229 | * sent. If you set a new interrupt message before the old was sent, the | ||
| 230 | * message already buffered will be lost. | ||
| 231 | */ | ||
| 232 | #if USB_CFG_HAVE_INTRIN_ENDPOINT3 | ||
| 233 | USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len); | ||
| 234 | #define usbInterruptIsReady3() (usbTxLen3 & 0x10) | ||
| 235 | /* Same as above for endpoint 3 */ | ||
| 236 | #endif | ||
| 237 | #endif /* USB_CFG_HAVE_INTRIN_ENDPOINT */ | ||
| 238 | #if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* simplified interface for backward compatibility */ | ||
| 239 | #define usbHidReportDescriptor usbDescriptorHidReport | ||
| 240 | /* should be declared as: PROGMEM char usbHidReportDescriptor[]; */ | ||
| 241 | /* If you implement an HID device, you need to provide a report descriptor. | ||
| 242 | * The HID report descriptor syntax is a bit complex. If you understand how | ||
| 243 | * report descriptors are constructed, we recommend that you use the HID | ||
| 244 | * Descriptor Tool from usb.org, see http://www.usb.org/developers/hidpage/. | ||
| 245 | * Otherwise you should probably start with a working example. | ||
| 246 | */ | ||
| 247 | #endif /* USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH */ | ||
| 248 | #if USB_CFG_IMPLEMENT_FN_WRITE | ||
| 249 | USB_PUBLIC uchar usbFunctionWrite(uchar *data, uchar len); | ||
| 250 | /* This function is called by the driver to provide a control transfer's | ||
| 251 | * payload data (control-out). It is called in chunks of up to 8 bytes. The | ||
| 252 | * total count provided in the current control transfer can be obtained from | ||
| 253 | * the 'length' property in the setup data. If an error occurred during | ||
| 254 | * processing, return 0xff (== -1). The driver will answer the entire transfer | ||
| 255 | * with a STALL token in this case. If you have received the entire payload | ||
| 256 | * successfully, return 1. If you expect more data, return 0. If you don't | ||
| 257 | * know whether the host will send more data (you should know, the total is | ||
| 258 | * provided in the usbFunctionSetup() call!), return 1. | ||
| 259 | * NOTE: If you return 0xff for STALL, 'usbFunctionWrite()' may still be called | ||
| 260 | * for the remaining data. You must continue to return 0xff for STALL in these | ||
| 261 | * calls. | ||
| 262 | * In order to get usbFunctionWrite() called, define USB_CFG_IMPLEMENT_FN_WRITE | ||
| 263 | * to 1 in usbconfig.h and return 0xff in usbFunctionSetup().. | ||
| 264 | */ | ||
| 265 | #endif /* USB_CFG_IMPLEMENT_FN_WRITE */ | ||
| 266 | #if USB_CFG_IMPLEMENT_FN_READ | ||
| 267 | USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len); | ||
| 268 | /* This function is called by the driver to ask the application for a control | ||
| 269 | * transfer's payload data (control-in). It is called in chunks of up to 8 | ||
| 270 | * bytes each. You should copy the data to the location given by 'data' and | ||
| 271 | * return the actual number of bytes copied. If you return less than requested, | ||
| 272 | * the control-in transfer is terminated. If you return 0xff, the driver aborts | ||
| 273 | * the transfer with a STALL token. | ||
| 274 | * In order to get usbFunctionRead() called, define USB_CFG_IMPLEMENT_FN_READ | ||
| 275 | * to 1 in usbconfig.h and return 0xff in usbFunctionSetup().. | ||
| 276 | */ | ||
| 277 | #endif /* USB_CFG_IMPLEMENT_FN_READ */ | ||
| 278 | |||
| 279 | extern uchar usbRxToken; /* may be used in usbFunctionWriteOut() below */ | ||
| 280 | #if USB_CFG_IMPLEMENT_FN_WRITEOUT | ||
| 281 | USB_PUBLIC void usbFunctionWriteOut(uchar *data, uchar len); | ||
| 282 | /* This function is called by the driver when data is received on an interrupt- | ||
| 283 | * or bulk-out endpoint. The endpoint number can be found in the global | ||
| 284 | * variable usbRxToken. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT to 1 in | ||
| 285 | * usbconfig.h to get this function called. | ||
| 286 | */ | ||
| 287 | #endif /* USB_CFG_IMPLEMENT_FN_WRITEOUT */ | ||
| 288 | #ifdef USB_CFG_PULLUP_IOPORTNAME | ||
| 289 | #define usbDeviceConnect() ((USB_PULLUP_DDR |= (1<<USB_CFG_PULLUP_BIT)), \ | ||
| 290 | (USB_PULLUP_OUT |= (1<<USB_CFG_PULLUP_BIT))) | ||
| 291 | #define usbDeviceDisconnect() ((USB_PULLUP_DDR &= ~(1<<USB_CFG_PULLUP_BIT)), \ | ||
| 292 | (USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT))) | ||
| 293 | #else /* USB_CFG_PULLUP_IOPORTNAME */ | ||
| 294 | #define usbDeviceConnect() (USBDDR &= ~(1<<USBMINUS)) | ||
| 295 | #define usbDeviceDisconnect() (USBDDR |= (1<<USBMINUS)) | ||
| 296 | #endif /* USB_CFG_PULLUP_IOPORTNAME */ | ||
| 297 | /* The macros usbDeviceConnect() and usbDeviceDisconnect() (intended to look | ||
| 298 | * like a function) connect resp. disconnect the device from the host's USB. | ||
| 299 | * If the constants USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT are defined | ||
| 300 | * in usbconfig.h, a disconnect consists of removing the pull-up resisitor | ||
| 301 | * from D-, otherwise the disconnect is done by brute-force pulling D- to GND. | ||
| 302 | * This does not conform to the spec, but it works. | ||
| 303 | * Please note that the USB interrupt must be disabled while the device is | ||
| 304 | * in disconnected state, or the interrupt handler will hang! You can either | ||
| 305 | * turn off the USB interrupt selectively with | ||
| 306 | * USB_INTR_ENABLE &= ~(1 << USB_INTR_ENABLE_BIT) | ||
| 307 | * or use cli() to disable interrupts globally. | ||
| 308 | */ | ||
| 309 | extern unsigned usbCrc16(unsigned data, uchar len); | ||
| 310 | #define usbCrc16(data, len) usbCrc16((unsigned)(data), len) | ||
| 311 | /* This function calculates the binary complement of the data CRC used in | ||
| 312 | * USB data packets. The value is used to build raw transmit packets. | ||
| 313 | * You may want to use this function for data checksums or to verify received | ||
| 314 | * data. We enforce 16 bit calling conventions for compatibility with IAR's | ||
| 315 | * tiny memory model. | ||
| 316 | */ | ||
| 317 | extern unsigned usbCrc16Append(unsigned data, uchar len); | ||
| 318 | #define usbCrc16Append(data, len) usbCrc16Append((unsigned)(data), len) | ||
| 319 | /* This function is equivalent to usbCrc16() above, except that it appends | ||
| 320 | * the 2 bytes CRC (lowbyte first) in the 'data' buffer after reading 'len' | ||
| 321 | * bytes. | ||
| 322 | */ | ||
| 323 | #if USB_CFG_HAVE_MEASURE_FRAME_LENGTH | ||
| 324 | extern unsigned usbMeasureFrameLength(void); | ||
| 325 | /* This function MUST be called IMMEDIATELY AFTER USB reset and measures 1/7 of | ||
| 326 | * the number of CPU cycles during one USB frame minus one low speed bit | ||
| 327 | * length. In other words: return value = 1499 * (F_CPU / 10.5 MHz) | ||
| 328 | * Since this is a busy wait, you MUST disable all interrupts with cli() before | ||
| 329 | * calling this function. | ||
| 330 | * This can be used to calibrate the AVR's RC oscillator. | ||
| 331 | */ | ||
| 332 | #endif | ||
| 333 | extern uchar usbConfiguration; | ||
| 334 | /* This value contains the current configuration set by the host. The driver | ||
| 335 | * allows setting and querying of this variable with the USB SET_CONFIGURATION | ||
| 336 | * and GET_CONFIGURATION requests, but does not use it otherwise. | ||
| 337 | * You may want to reflect the "configured" status with a LED on the device or | ||
| 338 | * switch on high power parts of the circuit only if the device is configured. | ||
| 339 | */ | ||
| 340 | #if USB_COUNT_SOF | ||
| 341 | extern volatile uchar usbSofCount; | ||
| 342 | /* This variable is incremented on every SOF packet. It is only available if | ||
| 343 | * the macro USB_COUNT_SOF is defined to a value != 0. | ||
| 344 | */ | ||
| 345 | #endif | ||
| 346 | #if USB_CFG_CHECK_DATA_TOGGLING | ||
| 347 | extern uchar usbCurrentDataToken; | ||
| 348 | /* This variable can be checked in usbFunctionWrite() and usbFunctionWriteOut() | ||
| 349 | * to ignore duplicate packets. | ||
| 350 | */ | ||
| 351 | #endif | ||
| 352 | |||
| 353 | #define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8)) | ||
| 354 | /* This macro builds a descriptor header for a string descriptor given the | ||
| 355 | * string's length. See usbdrv.c for an example how to use it. | ||
| 356 | */ | ||
| 357 | #if USB_CFG_HAVE_FLOWCONTROL | ||
| 358 | extern volatile schar usbRxLen; | ||
| 359 | #define usbDisableAllRequests() usbRxLen = -1 | ||
| 360 | /* Must be called from usbFunctionWrite(). This macro disables all data input | ||
| 361 | * from the USB interface. Requests from the host are answered with a NAK | ||
| 362 | * while they are disabled. | ||
| 363 | */ | ||
| 364 | #define usbEnableAllRequests() usbRxLen = 0 | ||
| 365 | /* May only be called if requests are disabled. This macro enables input from | ||
| 366 | * the USB interface after it has been disabled with usbDisableAllRequests(). | ||
| 367 | */ | ||
| 368 | #define usbAllRequestsAreDisabled() (usbRxLen < 0) | ||
| 369 | /* Use this macro to find out whether requests are disabled. It may be needed | ||
| 370 | * to ensure that usbEnableAllRequests() is never called when requests are | ||
| 371 | * enabled. | ||
| 372 | */ | ||
| 373 | #endif | ||
| 374 | |||
| 375 | #define USB_SET_DATATOKEN1(token) usbTxBuf1[0] = token | ||
| 376 | #define USB_SET_DATATOKEN3(token) usbTxBuf3[0] = token | ||
| 377 | /* These two macros can be used by application software to reset data toggling | ||
| 378 | * for interrupt-in endpoints 1 and 3. Since the token is toggled BEFORE | ||
| 379 | * sending data, you must set the opposite value of the token which should come | ||
| 380 | * first. | ||
| 381 | */ | ||
| 382 | |||
| 383 | #endif /* __ASSEMBLER__ */ | ||
| 384 | |||
| 385 | |||
| 386 | /* ------------------------------------------------------------------------- */ | ||
| 387 | /* ----------------- Definitions for Descriptor Properties ----------------- */ | ||
| 388 | /* ------------------------------------------------------------------------- */ | ||
| 389 | /* This is advanced stuff. See usbconfig-prototype.h for more information | ||
| 390 | * about the various methods to define USB descriptors. If you do nothing, | ||
| 391 | * the default descriptors will be used. | ||
| 392 | */ | ||
| 393 | #define USB_PROP_IS_DYNAMIC (1 << 14) | ||
| 394 | /* If this property is set for a descriptor, usbFunctionDescriptor() will be | ||
| 395 | * used to obtain the particular descriptor. Data directly returned via | ||
| 396 | * usbMsgPtr are FLASH data by default, combine (OR) with USB_PROP_IS_RAM to | ||
| 397 | * return RAM data. | ||
| 398 | */ | ||
| 399 | #define USB_PROP_IS_RAM (1 << 15) | ||
| 400 | /* If this property is set for a descriptor, the data is read from RAM | ||
| 401 | * memory instead of Flash. The property is used for all methods to provide | ||
| 402 | * external descriptors. | ||
| 403 | */ | ||
| 404 | #define USB_PROP_LENGTH(len) ((len) & 0x3fff) | ||
| 405 | /* If a static external descriptor is used, this is the total length of the | ||
| 406 | * descriptor in bytes. | ||
| 407 | */ | ||
| 408 | |||
| 409 | /* all descriptors which may have properties: */ | ||
| 410 | #ifndef USB_CFG_DESCR_PROPS_DEVICE | ||
| 411 | #define USB_CFG_DESCR_PROPS_DEVICE 0 | ||
| 412 | #endif | ||
| 413 | #ifndef USB_CFG_DESCR_PROPS_CONFIGURATION | ||
| 414 | #define USB_CFG_DESCR_PROPS_CONFIGURATION 0 | ||
| 415 | #endif | ||
| 416 | #ifndef USB_CFG_DESCR_PROPS_STRINGS | ||
| 417 | #define USB_CFG_DESCR_PROPS_STRINGS 0 | ||
| 418 | #endif | ||
| 419 | #ifndef USB_CFG_DESCR_PROPS_STRING_0 | ||
| 420 | #define USB_CFG_DESCR_PROPS_STRING_0 0 | ||
| 421 | #endif | ||
| 422 | #ifndef USB_CFG_DESCR_PROPS_STRING_VENDOR | ||
| 423 | #define USB_CFG_DESCR_PROPS_STRING_VENDOR 0 | ||
| 424 | #endif | ||
| 425 | #ifndef USB_CFG_DESCR_PROPS_STRING_PRODUCT | ||
| 426 | #define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0 | ||
| 427 | #endif | ||
| 428 | #ifndef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER | ||
| 429 | #define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0 | ||
| 430 | #endif | ||
| 431 | #ifndef USB_CFG_DESCR_PROPS_HID | ||
| 432 | #define USB_CFG_DESCR_PROPS_HID 0 | ||
| 433 | #endif | ||
| 434 | #if !(USB_CFG_DESCR_PROPS_HID_REPORT) | ||
| 435 | # undef USB_CFG_DESCR_PROPS_HID_REPORT | ||
| 436 | # if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* do some backward compatibility tricks */ | ||
| 437 | # define USB_CFG_DESCR_PROPS_HID_REPORT USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH | ||
| 438 | # else | ||
| 439 | # define USB_CFG_DESCR_PROPS_HID_REPORT 0 | ||
| 440 | # endif | ||
| 441 | #endif | ||
| 442 | #ifndef USB_CFG_DESCR_PROPS_UNKNOWN | ||
| 443 | #define USB_CFG_DESCR_PROPS_UNKNOWN 0 | ||
| 444 | #endif | ||
| 445 | |||
| 446 | /* ------------------ forward declaration of descriptors ------------------- */ | ||
| 447 | /* If you use external static descriptors, they must be stored in global | ||
| 448 | * arrays as declared below: | ||
| 449 | */ | ||
| 450 | #ifndef __ASSEMBLER__ | ||
| 451 | extern | ||
| 452 | #if !(USB_CFG_DESCR_PROPS_DEVICE & USB_PROP_IS_RAM) | ||
| 453 | PROGMEM | ||
| 454 | #endif | ||
| 455 | char usbDescriptorDevice[]; | ||
| 456 | |||
| 457 | extern | ||
| 458 | #if !(USB_CFG_DESCR_PROPS_CONFIGURATION & USB_PROP_IS_RAM) | ||
| 459 | PROGMEM | ||
| 460 | #endif | ||
| 461 | char usbDescriptorConfiguration[]; | ||
| 462 | |||
| 463 | extern | ||
| 464 | #if !(USB_CFG_DESCR_PROPS_HID_REPORT & USB_PROP_IS_RAM) | ||
| 465 | PROGMEM | ||
| 466 | #endif | ||
| 467 | char usbDescriptorHidReport[]; | ||
| 468 | |||
| 469 | extern | ||
| 470 | #if !(USB_CFG_DESCR_PROPS_STRING_0 & USB_PROP_IS_RAM) | ||
| 471 | PROGMEM | ||
| 472 | #endif | ||
| 473 | char usbDescriptorString0[]; | ||
| 474 | |||
| 475 | extern | ||
| 476 | #if !(USB_CFG_DESCR_PROPS_STRING_VENDOR & USB_PROP_IS_RAM) | ||
| 477 | PROGMEM | ||
| 478 | #endif | ||
| 479 | int usbDescriptorStringVendor[]; | ||
| 480 | |||
| 481 | extern | ||
| 482 | #if !(USB_CFG_DESCR_PROPS_STRING_PRODUCT & USB_PROP_IS_RAM) | ||
| 483 | PROGMEM | ||
| 484 | #endif | ||
| 485 | int usbDescriptorStringDevice[]; | ||
| 486 | |||
| 487 | extern | ||
| 488 | #if !(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER & USB_PROP_IS_RAM) | ||
| 489 | PROGMEM | ||
| 490 | #endif | ||
| 491 | int usbDescriptorStringSerialNumber[]; | ||
| 492 | |||
| 493 | #endif /* __ASSEMBLER__ */ | ||
| 494 | |||
| 495 | /* ------------------------------------------------------------------------- */ | ||
| 496 | /* ------------------------ General Purpose Macros ------------------------- */ | ||
| 497 | /* ------------------------------------------------------------------------- */ | ||
| 498 | |||
| 499 | #define USB_CONCAT(a, b) a ## b | ||
| 500 | #define USB_CONCAT_EXPANDED(a, b) USB_CONCAT(a, b) | ||
| 501 | |||
| 502 | #define USB_OUTPORT(name) USB_CONCAT(PORT, name) | ||
| 503 | #define USB_INPORT(name) USB_CONCAT(PIN, name) | ||
| 504 | #define USB_DDRPORT(name) USB_CONCAT(DDR, name) | ||
| 505 | /* The double-define trick above lets us concatenate strings which are | ||
| 506 | * defined by macros. | ||
| 507 | */ | ||
| 508 | |||
| 509 | /* ------------------------------------------------------------------------- */ | ||
| 510 | /* ------------------------- Constant definitions -------------------------- */ | ||
| 511 | /* ------------------------------------------------------------------------- */ | ||
| 512 | |||
| 513 | #if !defined __ASSEMBLER__ && (!defined USB_CFG_VENDOR_ID || !defined USB_CFG_DEVICE_ID) | ||
| 514 | #warning "You should define USB_CFG_VENDOR_ID and USB_CFG_DEVICE_ID in usbconfig.h" | ||
| 515 | /* If the user has not defined IDs, we default to obdev's free IDs. | ||
| 516 | * See USB-IDs-for-free.txt for details. | ||
| 517 | */ | ||
| 518 | #endif | ||
| 519 | |||
| 520 | /* make sure we have a VID and PID defined, byte order is lowbyte, highbyte */ | ||
| 521 | #ifndef USB_CFG_VENDOR_ID | ||
| 522 | # define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */ | ||
| 523 | #endif | ||
| 524 | |||
| 525 | #ifndef USB_CFG_DEVICE_ID | ||
| 526 | # if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH | ||
| 527 | # define USB_CFG_DEVICE_ID 0xdf, 0x05 /* = 0x5df = 1503, shared PID for HIDs */ | ||
| 528 | # elif USB_CFG_INTERFACE_CLASS == 2 | ||
| 529 | # define USB_CFG_DEVICE_ID 0xe1, 0x05 /* = 0x5e1 = 1505, shared PID for CDC Modems */ | ||
| 530 | # else | ||
| 531 | # define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x5dc = 1500, obdev's free PID */ | ||
| 532 | # endif | ||
| 533 | #endif | ||
| 534 | |||
| 535 | /* Derive Output, Input and DataDirection ports from port names */ | ||
| 536 | #ifndef USB_CFG_IOPORTNAME | ||
| 537 | #error "You must define USB_CFG_IOPORTNAME in usbconfig.h, see usbconfig-prototype.h" | ||
| 538 | #endif | ||
| 539 | |||
| 540 | #define USBOUT USB_OUTPORT(USB_CFG_IOPORTNAME) | ||
| 541 | #define USB_PULLUP_OUT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME) | ||
| 542 | #define USBIN USB_INPORT(USB_CFG_IOPORTNAME) | ||
| 543 | #define USBDDR USB_DDRPORT(USB_CFG_IOPORTNAME) | ||
| 544 | #define USB_PULLUP_DDR USB_DDRPORT(USB_CFG_PULLUP_IOPORTNAME) | ||
| 545 | |||
| 546 | #define USBMINUS USB_CFG_DMINUS_BIT | ||
| 547 | #define USBPLUS USB_CFG_DPLUS_BIT | ||
| 548 | #define USBIDLE (1<<USB_CFG_DMINUS_BIT) /* value representing J state */ | ||
| 549 | #define USBMASK ((1<<USB_CFG_DPLUS_BIT) | (1<<USB_CFG_DMINUS_BIT)) /* mask for USB I/O bits */ | ||
| 550 | |||
| 551 | /* defines for backward compatibility with older driver versions: */ | ||
| 552 | #define USB_CFG_IOPORT USB_OUTPORT(USB_CFG_IOPORTNAME) | ||
| 553 | #ifdef USB_CFG_PULLUP_IOPORTNAME | ||
| 554 | #define USB_CFG_PULLUP_IOPORT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME) | ||
| 555 | #endif | ||
| 556 | |||
| 557 | #ifndef USB_CFG_EP3_NUMBER /* if not defined in usbconfig.h */ | ||
| 558 | #define USB_CFG_EP3_NUMBER 3 | ||
| 559 | #endif | ||
| 560 | |||
| 561 | #ifndef USB_CFG_HAVE_INTRIN_ENDPOINT3 | ||
| 562 | #define USB_CFG_HAVE_INTRIN_ENDPOINT3 0 | ||
| 563 | #endif | ||
| 564 | |||
| 565 | #define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */ | ||
| 566 | |||
| 567 | /* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */ | ||
| 568 | |||
| 569 | #ifndef USB_INTR_CFG /* allow user to override our default */ | ||
| 570 | # if defined EICRA | ||
| 571 | # define USB_INTR_CFG EICRA | ||
| 572 | # else | ||
| 573 | # define USB_INTR_CFG MCUCR | ||
| 574 | # endif | ||
| 575 | #endif | ||
| 576 | #ifndef USB_INTR_CFG_SET /* allow user to override our default */ | ||
| 577 | # if defined(USB_COUNT_SOF) || defined(USB_SOF_HOOK) | ||
| 578 | # define USB_INTR_CFG_SET (1 << ISC01) /* cfg for falling edge */ | ||
| 579 | /* If any SOF logic is used, the interrupt must be wired to D- where | ||
| 580 | * we better trigger on falling edge | ||
| 581 | */ | ||
| 582 | # else | ||
| 583 | # define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */ | ||
| 584 | # endif | ||
| 585 | #endif | ||
| 586 | #ifndef USB_INTR_CFG_CLR /* allow user to override our default */ | ||
| 587 | # define USB_INTR_CFG_CLR 0 /* no bits to clear */ | ||
| 588 | #endif | ||
| 589 | |||
| 590 | #ifndef USB_INTR_ENABLE /* allow user to override our default */ | ||
| 591 | # if defined GIMSK | ||
| 592 | # define USB_INTR_ENABLE GIMSK | ||
| 593 | # elif defined EIMSK | ||
| 594 | # define USB_INTR_ENABLE EIMSK | ||
| 595 | # else | ||
| 596 | # define USB_INTR_ENABLE GICR | ||
| 597 | # endif | ||
| 598 | #endif | ||
| 599 | #ifndef USB_INTR_ENABLE_BIT /* allow user to override our default */ | ||
| 600 | # define USB_INTR_ENABLE_BIT INT0 | ||
| 601 | #endif | ||
| 602 | |||
| 603 | #ifndef USB_INTR_PENDING /* allow user to override our default */ | ||
| 604 | # if defined EIFR | ||
| 605 | # define USB_INTR_PENDING EIFR | ||
| 606 | # else | ||
| 607 | # define USB_INTR_PENDING GIFR | ||
| 608 | # endif | ||
| 609 | #endif | ||
| 610 | #ifndef USB_INTR_PENDING_BIT /* allow user to override our default */ | ||
| 611 | # define USB_INTR_PENDING_BIT INTF0 | ||
| 612 | #endif | ||
| 613 | |||
| 614 | /* | ||
| 615 | The defines above don't work for the following chips | ||
| 616 | at90c8534: no ISC0?, no PORTB, can't find a data sheet | ||
| 617 | at86rf401: no PORTB, no MCUCR etc, low clock rate | ||
| 618 | atmega103: no ISC0? (maybe omission in header, can't find data sheet) | ||
| 619 | atmega603: not defined in avr-libc | ||
| 620 | at43usb320, at43usb355, at76c711: have USB anyway | ||
| 621 | at94k: is different... | ||
| 622 | |||
| 623 | at90s1200, attiny11, attiny12, attiny15, attiny28: these have no RAM | ||
| 624 | */ | ||
| 625 | |||
| 626 | /* ------------------------------------------------------------------------- */ | ||
| 627 | /* ----------------- USB Specification Constants and Types ----------------- */ | ||
| 628 | /* ------------------------------------------------------------------------- */ | ||
| 629 | |||
| 630 | /* USB Token values */ | ||
| 631 | #define USBPID_SETUP 0x2d | ||
| 632 | #define USBPID_OUT 0xe1 | ||
| 633 | #define USBPID_IN 0x69 | ||
| 634 | #define USBPID_DATA0 0xc3 | ||
| 635 | #define USBPID_DATA1 0x4b | ||
| 636 | |||
| 637 | #define USBPID_ACK 0xd2 | ||
| 638 | #define USBPID_NAK 0x5a | ||
| 639 | #define USBPID_STALL 0x1e | ||
| 640 | |||
| 641 | #ifndef USB_INITIAL_DATATOKEN | ||
| 642 | #define USB_INITIAL_DATATOKEN USBPID_DATA1 | ||
| 643 | #endif | ||
| 644 | |||
| 645 | #ifndef __ASSEMBLER__ | ||
| 646 | |||
| 647 | typedef struct usbTxStatus{ | ||
| 648 | volatile uchar len; | ||
| 649 | uchar buffer[USB_BUFSIZE]; | ||
| 650 | }usbTxStatus_t; | ||
| 651 | |||
| 652 | extern usbTxStatus_t usbTxStatus1, usbTxStatus3; | ||
| 653 | #define usbTxLen1 usbTxStatus1.len | ||
| 654 | #define usbTxBuf1 usbTxStatus1.buffer | ||
| 655 | #define usbTxLen3 usbTxStatus3.len | ||
| 656 | #define usbTxBuf3 usbTxStatus3.buffer | ||
| 657 | |||
| 658 | |||
| 659 | typedef union usbWord{ | ||
| 660 | unsigned word; | ||
| 661 | uchar bytes[2]; | ||
| 662 | }usbWord_t; | ||
| 663 | |||
| 664 | typedef struct usbRequest{ | ||
| 665 | uchar bmRequestType; | ||
| 666 | uchar bRequest; | ||
| 667 | usbWord_t wValue; | ||
| 668 | usbWord_t wIndex; | ||
| 669 | usbWord_t wLength; | ||
| 670 | }usbRequest_t; | ||
| 671 | /* This structure matches the 8 byte setup request */ | ||
| 672 | #endif | ||
| 673 | |||
| 674 | /* bmRequestType field in USB setup: | ||
| 675 | * d t t r r r r r, where | ||
| 676 | * d ..... direction: 0=host->device, 1=device->host | ||
| 677 | * t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved | ||
| 678 | * r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other | ||
| 679 | */ | ||
| 680 | |||
| 681 | /* USB setup recipient values */ | ||
| 682 | #define USBRQ_RCPT_MASK 0x1f | ||
| 683 | #define USBRQ_RCPT_DEVICE 0 | ||
| 684 | #define USBRQ_RCPT_INTERFACE 1 | ||
| 685 | #define USBRQ_RCPT_ENDPOINT 2 | ||
| 686 | |||
| 687 | /* USB request type values */ | ||
| 688 | #define USBRQ_TYPE_MASK 0x60 | ||
| 689 | #define USBRQ_TYPE_STANDARD (0<<5) | ||
| 690 | #define USBRQ_TYPE_CLASS (1<<5) | ||
| 691 | #define USBRQ_TYPE_VENDOR (2<<5) | ||
| 692 | |||
| 693 | /* USB direction values: */ | ||
| 694 | #define USBRQ_DIR_MASK 0x80 | ||
| 695 | #define USBRQ_DIR_HOST_TO_DEVICE (0<<7) | ||
| 696 | #define USBRQ_DIR_DEVICE_TO_HOST (1<<7) | ||
| 697 | |||
| 698 | /* USB Standard Requests */ | ||
| 699 | #define USBRQ_GET_STATUS 0 | ||
| 700 | #define USBRQ_CLEAR_FEATURE 1 | ||
| 701 | #define USBRQ_SET_FEATURE 3 | ||
| 702 | #define USBRQ_SET_ADDRESS 5 | ||
| 703 | #define USBRQ_GET_DESCRIPTOR 6 | ||
| 704 | #define USBRQ_SET_DESCRIPTOR 7 | ||
| 705 | #define USBRQ_GET_CONFIGURATION 8 | ||
| 706 | #define USBRQ_SET_CONFIGURATION 9 | ||
| 707 | #define USBRQ_GET_INTERFACE 10 | ||
| 708 | #define USBRQ_SET_INTERFACE 11 | ||
| 709 | #define USBRQ_SYNCH_FRAME 12 | ||
| 710 | |||
| 711 | /* USB descriptor constants */ | ||
| 712 | #define USBDESCR_DEVICE 1 | ||
| 713 | #define USBDESCR_CONFIG 2 | ||
| 714 | #define USBDESCR_STRING 3 | ||
| 715 | #define USBDESCR_INTERFACE 4 | ||
| 716 | #define USBDESCR_ENDPOINT 5 | ||
| 717 | #define USBDESCR_HID 0x21 | ||
| 718 | #define USBDESCR_HID_REPORT 0x22 | ||
| 719 | #define USBDESCR_HID_PHYS 0x23 | ||
| 720 | |||
| 721 | //#define USBATTR_BUSPOWER 0x80 // USB 1.1 does not define this value any more | ||
| 722 | #define USBATTR_SELFPOWER 0x40 | ||
| 723 | #define USBATTR_REMOTEWAKE 0x20 | ||
| 724 | |||
| 725 | /* USB HID Requests */ | ||
| 726 | #define USBRQ_HID_GET_REPORT 0x01 | ||
| 727 | #define USBRQ_HID_GET_IDLE 0x02 | ||
| 728 | #define USBRQ_HID_GET_PROTOCOL 0x03 | ||
| 729 | #define USBRQ_HID_SET_REPORT 0x09 | ||
| 730 | #define USBRQ_HID_SET_IDLE 0x0a | ||
| 731 | #define USBRQ_HID_SET_PROTOCOL 0x0b | ||
| 732 | |||
| 733 | /* ------------------------------------------------------------------------- */ | ||
| 734 | |||
| 735 | #endif /* __usbdrv_h_included__ */ | ||
