735 lines
30 KiB
C
735 lines
30 KiB
C
/* Name: usbdrv.h
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* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
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* Author: Christian Starkjohann
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* Creation Date: 2004-12-29
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* Tabsize: 4
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* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
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* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
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* This Revision: $Id: usbdrv.h 793 2010-07-15 15:58:11Z cs $
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*/
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#ifndef __usbdrv_h_included__
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#define __usbdrv_h_included__
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#include "usbconfig.h"
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#include "usbportability.h"
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/*
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Hardware Prerequisites:
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=======================
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USB lines D+ and D- MUST be wired to the same I/O port. We recommend that D+
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triggers the interrupt (best achieved by using INT0 for D+), but it is also
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possible to trigger the interrupt from D-. If D- is used, interrupts are also
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triggered by SOF packets. D- requires a pull-up of 1.5k to +3.5V (and the
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device must be powered at 3.5V) to identify as low-speed USB device. A
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pull-down or pull-up of 1M SHOULD be connected from D+ to +3.5V to prevent
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interference when no USB master is connected. If you use Zener diodes to limit
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the voltage on D+ and D-, you MUST use a pull-down resistor, not a pull-up.
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We use D+ as interrupt source and not D- because it does not trigger on
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keep-alive and RESET states. If you want to count keep-alive events with
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USB_COUNT_SOF, you MUST use D- as an interrupt source.
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As a compile time option, the 1.5k pull-up resistor on D- can be made
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switchable to allow the device to disconnect at will. See the definition of
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usbDeviceConnect() and usbDeviceDisconnect() further down in this file.
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Please adapt the values in usbconfig.h according to your hardware!
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The device MUST be clocked at exactly 12 MHz, 15 MHz, 16 MHz or 20 MHz
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or at 12.8 MHz resp. 16.5 MHz +/- 1%. See usbconfig-prototype.h for details.
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Limitations:
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============
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Robustness with respect to communication errors:
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The driver assumes error-free communication. It DOES check for errors in
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the PID, but does NOT check bit stuffing errors, SE0 in middle of a byte,
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token CRC (5 bit) and data CRC (16 bit). CRC checks can not be performed due
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to timing constraints: We must start sending a reply within 7 bit times.
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Bit stuffing and misplaced SE0 would have to be checked in real-time, but CPU
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performance does not permit that. The driver does not check Data0/Data1
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toggling, but application software can implement the check.
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Input characteristics:
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Since no differential receiver circuit is used, electrical interference
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robustness may suffer. The driver samples only one of the data lines with
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an ordinary I/O pin's input characteristics. However, since this is only a
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low speed USB implementation and the specification allows for 8 times the
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bit rate over the same hardware, we should be on the safe side. Even the spec
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requires detection of asymmetric states at high bit rate for SE0 detection.
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Number of endpoints:
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The driver supports the following endpoints:
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- Endpoint 0, the default control endpoint.
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- Any number of interrupt- or bulk-out endpoints. The data is sent to
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usbFunctionWriteOut() and USB_CFG_IMPLEMENT_FN_WRITEOUT must be defined
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to 1 to activate this feature. The endpoint number can be found in the
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global variable 'usbRxToken'.
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- One default interrupt- or bulk-in endpoint. This endpoint is used for
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interrupt- or bulk-in transfers which are not handled by any other endpoint.
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You must define USB_CFG_HAVE_INTRIN_ENDPOINT in order to activate this
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feature and call usbSetInterrupt() to send interrupt/bulk data.
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- One additional interrupt- or bulk-in endpoint. This was endpoint 3 in
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previous versions of this driver but can now be configured to any endpoint
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number. You must define USB_CFG_HAVE_INTRIN_ENDPOINT3 in order to activate
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this feature and call usbSetInterrupt3() to send interrupt/bulk data. The
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endpoint number can be set with USB_CFG_EP3_NUMBER.
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Please note that the USB standard forbids bulk endpoints for low speed devices!
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Most operating systems allow them anyway, but the AVR will spend 90% of the CPU
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time in the USB interrupt polling for bulk data.
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Maximum data payload:
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Data payload of control in and out transfers may be up to 254 bytes. In order
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to accept payload data of out transfers, you need to implement
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'usbFunctionWrite()'.
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USB Suspend Mode supply current:
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The USB standard limits power consumption to 500uA when the bus is in suspend
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mode. This is not a problem for self-powered devices since they don't need
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bus power anyway. Bus-powered devices can achieve this only by putting the
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CPU in sleep mode. The driver does not implement suspend handling by itself.
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However, the application may implement activity monitoring and wakeup from
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sleep. The host sends regular SE0 states on the bus to keep it active. These
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SE0 states can be detected by using D- as the interrupt source. Define
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USB_COUNT_SOF to 1 and use the global variable usbSofCount to check for bus
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activity.
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Operation without an USB master:
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The driver behaves neutral without connection to an USB master if D- reads
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as 1. To avoid spurious interrupts, we recommend a high impedance (e.g. 1M)
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pull-down or pull-up resistor on D+ (interrupt). If Zener diodes are used,
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use a pull-down. If D- becomes statically 0, the driver may block in the
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interrupt routine.
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Interrupt latency:
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The application must ensure that the USB interrupt is not disabled for more
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than 25 cycles (this is for 12 MHz, faster clocks allow longer latency).
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This implies that all interrupt routines must either have the "ISR_NOBLOCK"
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attribute set (see "avr/interrupt.h") or be written in assembler with "sei"
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as the first instruction.
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Maximum interrupt duration / CPU cycle consumption:
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The driver handles all USB communication during the interrupt service
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routine. The routine will not return before an entire USB message is received
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and the reply is sent. This may be up to ca. 1200 cycles @ 12 MHz (= 100us) if
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the host conforms to the standard. The driver will consume CPU cycles for all
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USB messages, even if they address another (low-speed) device on the same bus.
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*/
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/* ------------------------------------------------------------------------- */
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/* --------------------------- Module Interface ---------------------------- */
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/* ------------------------------------------------------------------------- */
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#define USBDRV_VERSION 20100715
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/* This define uniquely identifies a driver version. It is a decimal number
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* constructed from the driver's release date in the form YYYYMMDD. If the
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* driver's behavior or interface changes, you can use this constant to
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* distinguish versions. If it is not defined, the driver's release date is
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* older than 2006-01-25.
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*/
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#ifndef USB_PUBLIC
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#define USB_PUBLIC
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#endif
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/* USB_PUBLIC is used as declaration attribute for all functions exported by
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* the USB driver. The default is no attribute (see above). You may define it
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* to static either in usbconfig.h or from the command line if you include
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* usbdrv.c instead of linking against it. Including the C module of the driver
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* directly in your code saves a couple of bytes in flash memory.
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*/
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#ifndef __ASSEMBLER__
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#ifndef uchar
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#define uchar unsigned char
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#endif
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#ifndef schar
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#define schar signed char
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#endif
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/* shortcuts for well defined 8 bit integer types */
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#if USB_CFG_LONG_TRANSFERS /* if more than 254 bytes transfer size required */
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# define usbMsgLen_t unsigned
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#else
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# define usbMsgLen_t uchar
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#endif
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/* usbMsgLen_t is the data type used for transfer lengths. By default, it is
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* defined to uchar, allowing a maximum of 254 bytes (255 is reserved for
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* USB_NO_MSG below). If the usbconfig.h defines USB_CFG_LONG_TRANSFERS to 1,
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* a 16 bit data type is used, allowing up to 16384 bytes (the rest is used
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* for flags in the descriptor configuration).
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*/
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#define USB_NO_MSG ((usbMsgLen_t)-1) /* constant meaning "no message" */
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struct usbRequest; /* forward declaration */
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USB_PUBLIC void usbInit(void);
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/* This function must be called before interrupts are enabled and the main
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* loop is entered. We exepct that the PORT and DDR bits for D+ and D- have
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* not been changed from their default status (which is 0). If you have changed
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* them, set both back to 0 (configure them as input with no internal pull-up).
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*/
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USB_PUBLIC void usbPoll(void);
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/* This function must be called at regular intervals from the main loop.
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* Maximum delay between calls is somewhat less than 50ms (USB timeout for
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* accepting a Setup message). Otherwise the device will not be recognized.
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* Please note that debug outputs through the UART take ~ 0.5ms per byte
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* at 19200 bps.
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*/
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extern uchar *usbMsgPtr;
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/* This variable may be used to pass transmit data to the driver from the
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* implementation of usbFunctionWrite(). It is also used internally by the
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* driver for standard control requests.
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*/
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USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8]);
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/* This function is called when the driver receives a SETUP transaction from
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* the host which is not answered by the driver itself (in practice: class and
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* vendor requests). All control transfers start with a SETUP transaction where
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* the host communicates the parameters of the following (optional) data
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* transfer. The SETUP data is available in the 'data' parameter which can
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* (and should) be casted to 'usbRequest_t *' for a more user-friendly access
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* to parameters.
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*
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* If the SETUP indicates a control-in transfer, you should provide the
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* requested data to the driver. There are two ways to transfer this data:
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* (1) Set the global pointer 'usbMsgPtr' to the base of the static RAM data
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* block and return the length of the data in 'usbFunctionSetup()'. The driver
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* will handle the rest. Or (2) return USB_NO_MSG in 'usbFunctionSetup()'. The
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* driver will then call 'usbFunctionRead()' when data is needed. See the
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* documentation for usbFunctionRead() for details.
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*
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* If the SETUP indicates a control-out transfer, the only way to receive the
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* data from the host is through the 'usbFunctionWrite()' call. If you
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* implement this function, you must return USB_NO_MSG in 'usbFunctionSetup()'
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* to indicate that 'usbFunctionWrite()' should be used. See the documentation
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* of this function for more information. If you just want to ignore the data
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* sent by the host, return 0 in 'usbFunctionSetup()'.
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*
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* Note that calls to the functions usbFunctionRead() and usbFunctionWrite()
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* are only done if enabled by the configuration in usbconfig.h.
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*/
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USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq);
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/* You need to implement this function ONLY if you provide USB descriptors at
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* runtime (which is an expert feature). It is very similar to
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* usbFunctionSetup() above, but it is called only to request USB descriptor
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* data. See the documentation of usbFunctionSetup() above for more info.
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*/
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#if USB_CFG_HAVE_INTRIN_ENDPOINT
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USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len);
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/* This function sets the message which will be sent during the next interrupt
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* IN transfer. The message is copied to an internal buffer and must not exceed
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* a length of 8 bytes. The message may be 0 bytes long just to indicate the
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* interrupt status to the host.
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* If you need to transfer more bytes, use a control read after the interrupt.
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*/
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#define usbInterruptIsReady() (usbTxLen1 & 0x10)
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/* This macro indicates whether the last interrupt message has already been
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* sent. If you set a new interrupt message before the old was sent, the
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* message already buffered will be lost.
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*/
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#if USB_CFG_HAVE_INTRIN_ENDPOINT3
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USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len);
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#define usbInterruptIsReady3() (usbTxLen3 & 0x10)
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/* Same as above for endpoint 3 */
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#endif
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#endif /* USB_CFG_HAVE_INTRIN_ENDPOINT */
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#if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* simplified interface for backward compatibility */
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#define usbHidReportDescriptor usbDescriptorHidReport
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/* should be declared as: PROGMEM char usbHidReportDescriptor[]; */
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/* If you implement an HID device, you need to provide a report descriptor.
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* The HID report descriptor syntax is a bit complex. If you understand how
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* report descriptors are constructed, we recommend that you use the HID
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* Descriptor Tool from usb.org, see http://www.usb.org/developers/hidpage/.
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* Otherwise you should probably start with a working example.
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*/
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#endif /* USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH */
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#if USB_CFG_IMPLEMENT_FN_WRITE
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USB_PUBLIC uchar usbFunctionWrite(uchar *data, uchar len);
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/* This function is called by the driver to provide a control transfer's
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* payload data (control-out). It is called in chunks of up to 8 bytes. The
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* total count provided in the current control transfer can be obtained from
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* the 'length' property in the setup data. If an error occurred during
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* processing, return 0xff (== -1). The driver will answer the entire transfer
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* with a STALL token in this case. If you have received the entire payload
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* successfully, return 1. If you expect more data, return 0. If you don't
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* know whether the host will send more data (you should know, the total is
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* provided in the usbFunctionSetup() call!), return 1.
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* NOTE: If you return 0xff for STALL, 'usbFunctionWrite()' may still be called
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* for the remaining data. You must continue to return 0xff for STALL in these
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* calls.
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* In order to get usbFunctionWrite() called, define USB_CFG_IMPLEMENT_FN_WRITE
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* to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
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*/
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#endif /* USB_CFG_IMPLEMENT_FN_WRITE */
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#if USB_CFG_IMPLEMENT_FN_READ
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USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len);
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/* This function is called by the driver to ask the application for a control
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* transfer's payload data (control-in). It is called in chunks of up to 8
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* bytes each. You should copy the data to the location given by 'data' and
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* return the actual number of bytes copied. If you return less than requested,
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* the control-in transfer is terminated. If you return 0xff, the driver aborts
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* the transfer with a STALL token.
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* In order to get usbFunctionRead() called, define USB_CFG_IMPLEMENT_FN_READ
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* to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
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*/
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#endif /* USB_CFG_IMPLEMENT_FN_READ */
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extern uchar usbRxToken; /* may be used in usbFunctionWriteOut() below */
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#if USB_CFG_IMPLEMENT_FN_WRITEOUT
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USB_PUBLIC void usbFunctionWriteOut(uchar *data, uchar len);
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/* This function is called by the driver when data is received on an interrupt-
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* or bulk-out endpoint. The endpoint number can be found in the global
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* variable usbRxToken. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT to 1 in
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* usbconfig.h to get this function called.
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*/
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#endif /* USB_CFG_IMPLEMENT_FN_WRITEOUT */
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#ifdef USB_CFG_PULLUP_IOPORTNAME
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#define usbDeviceConnect() ((USB_PULLUP_DDR |= (1<<USB_CFG_PULLUP_BIT)), \
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(USB_PULLUP_OUT |= (1<<USB_CFG_PULLUP_BIT)))
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#define usbDeviceDisconnect() ((USB_PULLUP_DDR &= ~(1<<USB_CFG_PULLUP_BIT)), \
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(USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT)))
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#else /* USB_CFG_PULLUP_IOPORTNAME */
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#define usbDeviceConnect() (USBDDR &= ~(1<<USBMINUS))
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#define usbDeviceDisconnect() (USBDDR |= (1<<USBMINUS))
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#endif /* USB_CFG_PULLUP_IOPORTNAME */
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/* The macros usbDeviceConnect() and usbDeviceDisconnect() (intended to look
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* like a function) connect resp. disconnect the device from the host's USB.
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* If the constants USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT are defined
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* in usbconfig.h, a disconnect consists of removing the pull-up resisitor
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* from D-, otherwise the disconnect is done by brute-force pulling D- to GND.
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* This does not conform to the spec, but it works.
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* Please note that the USB interrupt must be disabled while the device is
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* in disconnected state, or the interrupt handler will hang! You can either
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* turn off the USB interrupt selectively with
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* USB_INTR_ENABLE &= ~(1 << USB_INTR_ENABLE_BIT)
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* or use cli() to disable interrupts globally.
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*/
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extern unsigned usbCrc16(unsigned data, uchar len);
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#define usbCrc16(data, len) usbCrc16((unsigned)(data), len)
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/* This function calculates the binary complement of the data CRC used in
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* USB data packets. The value is used to build raw transmit packets.
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* You may want to use this function for data checksums or to verify received
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* data. We enforce 16 bit calling conventions for compatibility with IAR's
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* tiny memory model.
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*/
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extern unsigned usbCrc16Append(unsigned data, uchar len);
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#define usbCrc16Append(data, len) usbCrc16Append((unsigned)(data), len)
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/* This function is equivalent to usbCrc16() above, except that it appends
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* the 2 bytes CRC (lowbyte first) in the 'data' buffer after reading 'len'
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* bytes.
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*/
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#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH
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extern unsigned usbMeasureFrameLength(void);
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/* This function MUST be called IMMEDIATELY AFTER USB reset and measures 1/7 of
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* the number of CPU cycles during one USB frame minus one low speed bit
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* length. In other words: return value = 1499 * (F_CPU / 10.5 MHz)
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* Since this is a busy wait, you MUST disable all interrupts with cli() before
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* calling this function.
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* This can be used to calibrate the AVR's RC oscillator.
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*/
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#endif
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extern uchar usbConfiguration;
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/* This value contains the current configuration set by the host. The driver
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* allows setting and querying of this variable with the USB SET_CONFIGURATION
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* and GET_CONFIGURATION requests, but does not use it otherwise.
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* You may want to reflect the "configured" status with a LED on the device or
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* switch on high power parts of the circuit only if the device is configured.
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*/
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#if USB_COUNT_SOF
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extern volatile uchar usbSofCount;
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/* This variable is incremented on every SOF packet. It is only available if
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* the macro USB_COUNT_SOF is defined to a value != 0.
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*/
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#endif
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#if USB_CFG_CHECK_DATA_TOGGLING
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extern uchar usbCurrentDataToken;
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/* This variable can be checked in usbFunctionWrite() and usbFunctionWriteOut()
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* to ignore duplicate packets.
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*/
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#endif
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#define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8))
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/* This macro builds a descriptor header for a string descriptor given the
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* string's length. See usbdrv.c for an example how to use it.
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*/
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#if USB_CFG_HAVE_FLOWCONTROL
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extern volatile schar usbRxLen;
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#define usbDisableAllRequests() usbRxLen = -1
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/* Must be called from usbFunctionWrite(). This macro disables all data input
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* from the USB interface. Requests from the host are answered with a NAK
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* while they are disabled.
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*/
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#define usbEnableAllRequests() usbRxLen = 0
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/* May only be called if requests are disabled. This macro enables input from
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* the USB interface after it has been disabled with usbDisableAllRequests().
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*/
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#define usbAllRequestsAreDisabled() (usbRxLen < 0)
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/* Use this macro to find out whether requests are disabled. It may be needed
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* to ensure that usbEnableAllRequests() is never called when requests are
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* enabled.
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*/
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#endif
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#define USB_SET_DATATOKEN1(token) usbTxBuf1[0] = token
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#define USB_SET_DATATOKEN3(token) usbTxBuf3[0] = token
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/* These two macros can be used by application software to reset data toggling
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* for interrupt-in endpoints 1 and 3. Since the token is toggled BEFORE
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* sending data, you must set the opposite value of the token which should come
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* first.
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*/
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#endif /* __ASSEMBLER__ */
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/* ------------------------------------------------------------------------- */
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/* ----------------- Definitions for Descriptor Properties ----------------- */
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/* ------------------------------------------------------------------------- */
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/* This is advanced stuff. See usbconfig-prototype.h for more information
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* about the various methods to define USB descriptors. If you do nothing,
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* the default descriptors will be used.
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*/
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#define USB_PROP_IS_DYNAMIC (1 << 14)
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/* If this property is set for a descriptor, usbFunctionDescriptor() will be
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* used to obtain the particular descriptor. Data directly returned via
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* usbMsgPtr are FLASH data by default, combine (OR) with USB_PROP_IS_RAM to
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* return RAM data.
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*/
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#define USB_PROP_IS_RAM (1 << 15)
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/* If this property is set for a descriptor, the data is read from RAM
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* memory instead of Flash. The property is used for all methods to provide
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* external descriptors.
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*/
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#define USB_PROP_LENGTH(len) ((len) & 0x3fff)
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/* If a static external descriptor is used, this is the total length of the
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* descriptor in bytes.
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*/
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/* all descriptors which may have properties: */
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#ifndef USB_CFG_DESCR_PROPS_DEVICE
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#define USB_CFG_DESCR_PROPS_DEVICE 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_CONFIGURATION
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#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_STRINGS
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#define USB_CFG_DESCR_PROPS_STRINGS 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_STRING_0
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#define USB_CFG_DESCR_PROPS_STRING_0 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_STRING_VENDOR
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#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_STRING_PRODUCT
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#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
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#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
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#endif
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#ifndef USB_CFG_DESCR_PROPS_HID
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#define USB_CFG_DESCR_PROPS_HID 0
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#endif
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#if !(USB_CFG_DESCR_PROPS_HID_REPORT)
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# undef USB_CFG_DESCR_PROPS_HID_REPORT
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# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* do some backward compatibility tricks */
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# define USB_CFG_DESCR_PROPS_HID_REPORT USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
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# else
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# define USB_CFG_DESCR_PROPS_HID_REPORT 0
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# endif
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#endif
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#ifndef USB_CFG_DESCR_PROPS_UNKNOWN
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#define USB_CFG_DESCR_PROPS_UNKNOWN 0
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#endif
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/* ------------------ forward declaration of descriptors ------------------- */
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/* If you use external static descriptors, they must be stored in global
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* arrays as declared below:
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*/
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#ifndef __ASSEMBLER__
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extern
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#if !(USB_CFG_DESCR_PROPS_DEVICE & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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char usbDescriptorDevice[];
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extern
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#if !(USB_CFG_DESCR_PROPS_CONFIGURATION & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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char usbDescriptorConfiguration[];
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extern
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#if !(USB_CFG_DESCR_PROPS_HID_REPORT & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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char usbDescriptorHidReport[];
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extern
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#if !(USB_CFG_DESCR_PROPS_STRING_0 & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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char usbDescriptorString0[];
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extern
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#if !(USB_CFG_DESCR_PROPS_STRING_VENDOR & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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int usbDescriptorStringVendor[];
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extern
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#if !(USB_CFG_DESCR_PROPS_STRING_PRODUCT & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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int usbDescriptorStringDevice[];
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extern
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#if !(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER & USB_PROP_IS_RAM)
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PROGMEM
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#endif
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int usbDescriptorStringSerialNumber[];
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#endif /* __ASSEMBLER__ */
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/* ------------------------------------------------------------------------- */
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/* ------------------------ General Purpose Macros ------------------------- */
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/* ------------------------------------------------------------------------- */
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#define USB_CONCAT(a, b) a ## b
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#define USB_CONCAT_EXPANDED(a, b) USB_CONCAT(a, b)
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#define USB_OUTPORT(name) USB_CONCAT(PORT, name)
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#define USB_INPORT(name) USB_CONCAT(PIN, name)
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#define USB_DDRPORT(name) USB_CONCAT(DDR, name)
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/* The double-define trick above lets us concatenate strings which are
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* defined by macros.
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*/
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/* ------------------------------------------------------------------------- */
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/* ------------------------- Constant definitions -------------------------- */
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/* ------------------------------------------------------------------------- */
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#if !defined __ASSEMBLER__ && (!defined USB_CFG_VENDOR_ID || !defined USB_CFG_DEVICE_ID)
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#warning "You should define USB_CFG_VENDOR_ID and USB_CFG_DEVICE_ID in usbconfig.h"
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/* If the user has not defined IDs, we default to obdev's free IDs.
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* See USB-IDs-for-free.txt for details.
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*/
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#endif
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/* make sure we have a VID and PID defined, byte order is lowbyte, highbyte */
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#ifndef USB_CFG_VENDOR_ID
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# define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
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#endif
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#ifndef USB_CFG_DEVICE_ID
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# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
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# define USB_CFG_DEVICE_ID 0xdf, 0x05 /* = 0x5df = 1503, shared PID for HIDs */
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# elif USB_CFG_INTERFACE_CLASS == 2
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# define USB_CFG_DEVICE_ID 0xe1, 0x05 /* = 0x5e1 = 1505, shared PID for CDC Modems */
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# else
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# define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x5dc = 1500, obdev's free PID */
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# endif
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#endif
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/* Derive Output, Input and DataDirection ports from port names */
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#ifndef USB_CFG_IOPORTNAME
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#error "You must define USB_CFG_IOPORTNAME in usbconfig.h, see usbconfig-prototype.h"
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#endif
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#define USBOUT USB_OUTPORT(USB_CFG_IOPORTNAME)
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#define USB_PULLUP_OUT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
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#define USBIN USB_INPORT(USB_CFG_IOPORTNAME)
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#define USBDDR USB_DDRPORT(USB_CFG_IOPORTNAME)
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#define USB_PULLUP_DDR USB_DDRPORT(USB_CFG_PULLUP_IOPORTNAME)
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#define USBMINUS USB_CFG_DMINUS_BIT
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#define USBPLUS USB_CFG_DPLUS_BIT
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#define USBIDLE (1<<USB_CFG_DMINUS_BIT) /* value representing J state */
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#define USBMASK ((1<<USB_CFG_DPLUS_BIT) | (1<<USB_CFG_DMINUS_BIT)) /* mask for USB I/O bits */
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/* defines for backward compatibility with older driver versions: */
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#define USB_CFG_IOPORT USB_OUTPORT(USB_CFG_IOPORTNAME)
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#ifdef USB_CFG_PULLUP_IOPORTNAME
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#define USB_CFG_PULLUP_IOPORT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
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#endif
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#ifndef USB_CFG_EP3_NUMBER /* if not defined in usbconfig.h */
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#define USB_CFG_EP3_NUMBER 3
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#endif
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#ifndef USB_CFG_HAVE_INTRIN_ENDPOINT3
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#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
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#endif
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#define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */
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/* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */
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#ifndef USB_INTR_CFG /* allow user to override our default */
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# if defined EICRA
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# define USB_INTR_CFG EICRA
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# else
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# define USB_INTR_CFG MCUCR
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# endif
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#endif
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#ifndef USB_INTR_CFG_SET /* allow user to override our default */
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# if defined(USB_COUNT_SOF) || defined(USB_SOF_HOOK)
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# define USB_INTR_CFG_SET (1 << ISC01) /* cfg for falling edge */
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/* If any SOF logic is used, the interrupt must be wired to D- where
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* we better trigger on falling edge
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*/
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# else
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# define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */
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# endif
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#endif
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#ifndef USB_INTR_CFG_CLR /* allow user to override our default */
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# define USB_INTR_CFG_CLR 0 /* no bits to clear */
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#endif
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#ifndef USB_INTR_ENABLE /* allow user to override our default */
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# if defined GIMSK
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# define USB_INTR_ENABLE GIMSK
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# elif defined EIMSK
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# define USB_INTR_ENABLE EIMSK
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# else
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# define USB_INTR_ENABLE GICR
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# endif
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#endif
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#ifndef USB_INTR_ENABLE_BIT /* allow user to override our default */
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# define USB_INTR_ENABLE_BIT INT0
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#endif
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#ifndef USB_INTR_PENDING /* allow user to override our default */
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# if defined EIFR
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# define USB_INTR_PENDING EIFR
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# else
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# define USB_INTR_PENDING GIFR
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# endif
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#endif
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#ifndef USB_INTR_PENDING_BIT /* allow user to override our default */
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# define USB_INTR_PENDING_BIT INTF0
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#endif
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/*
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The defines above don't work for the following chips
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at90c8534: no ISC0?, no PORTB, can't find a data sheet
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at86rf401: no PORTB, no MCUCR etc, low clock rate
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atmega103: no ISC0? (maybe omission in header, can't find data sheet)
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atmega603: not defined in avr-libc
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at43usb320, at43usb355, at76c711: have USB anyway
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at94k: is different...
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at90s1200, attiny11, attiny12, attiny15, attiny28: these have no RAM
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*/
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/* ------------------------------------------------------------------------- */
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/* ----------------- USB Specification Constants and Types ----------------- */
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/* ------------------------------------------------------------------------- */
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/* USB Token values */
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#define USBPID_SETUP 0x2d
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#define USBPID_OUT 0xe1
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#define USBPID_IN 0x69
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#define USBPID_DATA0 0xc3
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#define USBPID_DATA1 0x4b
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#define USBPID_ACK 0xd2
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#define USBPID_NAK 0x5a
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#define USBPID_STALL 0x1e
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#ifndef USB_INITIAL_DATATOKEN
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#define USB_INITIAL_DATATOKEN USBPID_DATA1
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#endif
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#ifndef __ASSEMBLER__
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typedef struct usbTxStatus{
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volatile uchar len;
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uchar buffer[USB_BUFSIZE];
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}usbTxStatus_t;
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extern usbTxStatus_t usbTxStatus1, usbTxStatus3;
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#define usbTxLen1 usbTxStatus1.len
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#define usbTxBuf1 usbTxStatus1.buffer
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#define usbTxLen3 usbTxStatus3.len
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#define usbTxBuf3 usbTxStatus3.buffer
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typedef union usbWord{
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unsigned word;
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uchar bytes[2];
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}usbWord_t;
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typedef struct usbRequest{
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uchar bmRequestType;
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uchar bRequest;
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usbWord_t wValue;
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usbWord_t wIndex;
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usbWord_t wLength;
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}usbRequest_t;
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/* This structure matches the 8 byte setup request */
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#endif
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/* bmRequestType field in USB setup:
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* d t t r r r r r, where
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* d ..... direction: 0=host->device, 1=device->host
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* t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved
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* r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other
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*/
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/* USB setup recipient values */
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#define USBRQ_RCPT_MASK 0x1f
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#define USBRQ_RCPT_DEVICE 0
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#define USBRQ_RCPT_INTERFACE 1
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#define USBRQ_RCPT_ENDPOINT 2
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/* USB request type values */
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#define USBRQ_TYPE_MASK 0x60
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#define USBRQ_TYPE_STANDARD (0<<5)
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#define USBRQ_TYPE_CLASS (1<<5)
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#define USBRQ_TYPE_VENDOR (2<<5)
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/* USB direction values: */
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#define USBRQ_DIR_MASK 0x80
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#define USBRQ_DIR_HOST_TO_DEVICE (0<<7)
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#define USBRQ_DIR_DEVICE_TO_HOST (1<<7)
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/* USB Standard Requests */
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#define USBRQ_GET_STATUS 0
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#define USBRQ_CLEAR_FEATURE 1
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#define USBRQ_SET_FEATURE 3
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#define USBRQ_SET_ADDRESS 5
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#define USBRQ_GET_DESCRIPTOR 6
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#define USBRQ_SET_DESCRIPTOR 7
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#define USBRQ_GET_CONFIGURATION 8
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#define USBRQ_SET_CONFIGURATION 9
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#define USBRQ_GET_INTERFACE 10
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#define USBRQ_SET_INTERFACE 11
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#define USBRQ_SYNCH_FRAME 12
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/* USB descriptor constants */
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#define USBDESCR_DEVICE 1
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#define USBDESCR_CONFIG 2
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#define USBDESCR_STRING 3
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#define USBDESCR_INTERFACE 4
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#define USBDESCR_ENDPOINT 5
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#define USBDESCR_HID 0x21
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#define USBDESCR_HID_REPORT 0x22
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#define USBDESCR_HID_PHYS 0x23
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//#define USBATTR_BUSPOWER 0x80 // USB 1.1 does not define this value any more
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#define USBATTR_SELFPOWER 0x40
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#define USBATTR_REMOTEWAKE 0x20
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/* USB HID Requests */
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#define USBRQ_HID_GET_REPORT 0x01
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#define USBRQ_HID_GET_IDLE 0x02
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#define USBRQ_HID_GET_PROTOCOL 0x03
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#define USBRQ_HID_SET_REPORT 0x09
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#define USBRQ_HID_SET_IDLE 0x0a
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#define USBRQ_HID_SET_PROTOCOL 0x0b
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/* ------------------------------------------------------------------------- */
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#endif /* __usbdrv_h_included__ */
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