658 lines
27 KiB
C
658 lines
27 KiB
C
/* Name: usbdrv.h
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* Project: AVR USB driver
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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: Proprietary, free under certain conditions. See Documentation.
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* This Revision: $Id: usbdrv.h,v 1.1 2006/09/26 18:18:27 rschaten Exp $
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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 "iarcompat.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. D+ must (also) be
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connected to INT0. D- requires a pullup of 1.5k to +3.5V (and the device
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must be powered at 3.5V) to identify as low-speed USB device. A pullup of
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1M SHOULD be connected from D+ to +3.5V to prevent interference when no USB
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master is connected. We use D+ as interrupt source and not D- because it
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does not trigger on keep-alive and RESET states.
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As a compile time option, the 1.5k pullup 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 12 MHz. This is more than the 10 MHz allowed by
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an AT90S2313 powered at 4.5V. However, if the supply voltage to maximum clock
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relation is interpolated linearly, an ATtiny2313 meets the requirement by
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specification. In practice, the AT90S2313 can be overclocked and works well.
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Limitations:
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============
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Compiling:
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You should link the usbdrv.o module first because it has special alignment
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requirements for the receive buffer (the buffer must not cross a 256 byte
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page boundary, it must not even touch it at the end). If you can't link it
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first, you must use other measures to ensure alignment.
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Note: gcc does not always assign variable addresses in the order as the modules
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are linked or the variables are declared. You can choose a memory section for
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the receive buffer with the configuration option "USB_BUFFER_SECTION". This
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option defaults to ".bss". If you use your own section, you can place it at
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an arbitrary location with a linker option similar to
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"-Wl,--section-start=.mybuffer=0x800060". Use "avr-nm -ng" on the binary and
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search for "usbRxBuf" to find tbe base address of the 22 bytes rx buffer.
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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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Sampling jitter:
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The driver guarantees a sampling window of 1/2 bit. The USB spec requires
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that the receiver has at most 1/4 bit sampling window. The 1/2 bit window
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should still work reliably enough because we work at low speed. If you want
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to meet the spec, define the macro "USB_CFG_SAMPLE_EXACT" to 1 in usbconfig.h.
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This will unroll a loop which results in bigger code size.
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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 up to four endpoints: One control endpoint (endpoint 0),
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two interrupt-in (or bulk-in) endpoints (endpoint 1 and 3) and one
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interrupt-out (or bulk-out) endpoint (endpoint 1). Please note that the USB
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standard forbids bulk endpoints for low speed devices! Most operating systems
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allow them anyway, but the AVR will spend 90% of the CPU time in the USB
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interrupt polling for bulk data.
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By default, only the control endpoint 0 is enabled. To get the other endpoints,
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define USB_CFG_HAVE_INTRIN_ENDPOINT, USB_CFG_HAVE_INTRIN_ENDPOINT3 and/or
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USB_CFG_IMPLEMENT_FN_WRITEOUT respectively (see usbconfig-prototype.h for
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details).
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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 wiring the INT1 pin to D-. It is not necessary
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to enable the interrupt, checking the interrupt pending flag should suffice.
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Before entering sleep mode, the application should enable INT1 for a wakeup
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on the next bus 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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pullup resistor on D+. If D- becomes statically 0, the driver may block in
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the 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 20 cycles. This implies that all interrupt routines must either be
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declared as "INTERRUPT" instead of "SIGNAL" (see "avr/signal.h") or that they
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are written in assembler with "sei" 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 = 100us if the host
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conforms to the standard. The driver will consume CPU cycles for all USB
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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 20060718
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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 __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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struct usbRequest; /* forward declaration */
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extern 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.
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*/
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extern 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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extern uchar 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 0xff in 'usbFunctionSetup()'. The driver
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* 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 0xff in 'usbFunctionSetup()' to
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* indicate that 'usbFunctionWrite()' should be used. See the documentation of
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* this function for more information. If you just want to ignore the data sent
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* 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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extern uchar 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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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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extern volatile uchar usbTxLen1;
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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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void usbSetInterrupt3(uchar *data, uchar len);
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extern volatile uchar usbTxLen3;
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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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extern 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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extern 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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#if USB_CFG_IMPLEMENT_FN_WRITEOUT
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extern void usbFunctionWriteOut(uchar *data, uchar len);
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/* This function is called by the driver when data on interrupt-out or bulk-
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* out endpoint 1 is received. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT
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* to 1 in 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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/* This macro (intended to look like a function) connects the device to the
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* USB bus. It is only available if you have defined the constants
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* USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT in usbconfig.h.
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*/
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#define usbDeviceDisconnect() (USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT))
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/* This macro (intended to look like a function) disconnects the device from
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* the USB bus. It is only available if you have defined the constants
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* USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT in usbconfig.h.
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*/
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#endif /* USB_CFG_PULLUP_IOPORT */
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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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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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#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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extern uchar usbTxPacketCnt1;
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extern uchar usbTxPacketCnt3;
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/* The two variables above are mostly for internal use by the driver. You may
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* have to reset usbTxPacketCnt1 to 0 if you start data toggling at DATA0 for
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* interrupt-IN endpoint 1 and usbTxPacketCnt3 for interrupt-IN endpoint 3
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* respectively.
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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 << 8)
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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.
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*/
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#define USB_PROP_IS_RAM (1 << 9)
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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) & 0xff)
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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_DEVICE
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#define USB_CFG_DESCR_PROPS_STRING_DEVICE 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)
|
|
PROGMEM
|
|
#endif
|
|
int usbDescriptorStringVendor[];
|
|
|
|
extern
|
|
#if !(USB_CFG_DESCR_PROPS_STRING_PRODUCT & USB_PROP_IS_RAM)
|
|
PROGMEM
|
|
#endif
|
|
int usbDescriptorStringDevice[];
|
|
|
|
extern
|
|
#if !(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER & USB_PROP_IS_RAM)
|
|
PROGMEM
|
|
#endif
|
|
int usbDescriptorStringSerialNumber[];
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/* ------------------------ General Purpose Macros ------------------------- */
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
#define USB_CONCAT(a, b) a ## b
|
|
#define USB_CONCAT_EXPANDED(a, b) USB_CONCAT(a, b)
|
|
|
|
#define USB_OUTPORT(name) USB_CONCAT(PORT, name)
|
|
#define USB_INPORT(name) USB_CONCAT(PIN, name)
|
|
#define USB_DDRPORT(name) USB_CONCAT(DDR, name)
|
|
/* The double-define trick above lets us concatenate strings which are
|
|
* defined by macros.
|
|
*/
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/* ------------------------- Constant definitions -------------------------- */
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
#if !defined USB_CFG_VENDOR_ID || !defined USB_CFG_DEVICE_ID
|
|
static uchar Warning_You_should_define_USB_CFG_VENDOR_ID_and_USB_CFG_DEVICE_ID_in_usbconfig_h;
|
|
/* The unused variable above should generate a warning on all compilers. IAR cc
|
|
* does not understand the "#warning" preprocessor direcetive.
|
|
* If the user has not defined IDs, we default to obdev's free IDs.
|
|
* See USBID-License.txt for details.
|
|
*/
|
|
#endif
|
|
|
|
/* make sure we have a VID and PID defined, byte order is lowbyte, highbyte */
|
|
#ifndef USB_CFG_VENDOR_ID
|
|
# define USB_CFG_VENDOR_ID 0xc0, 0x16 /* 5824 in dec, stands for VOTI */
|
|
#endif
|
|
|
|
#ifndef USB_CFG_DEVICE_ID
|
|
# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
|
|
# define USB_CFG_DEVICE_ID 0xdf, 0x05 /* 1503 in dec, shared PID for HIDs */
|
|
# elif USB_CFG_INTERFACE_CLASS == 2
|
|
# define USB_CFG_DEVICE_ID 0xe1, 0x05 /* 1505 in dec, shared PID for CDC Modems */
|
|
# else
|
|
# define USB_CFG_DEVICE_ID 0xdc, 0x05 /* 1500 in dec, obdev's free PID */
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef USB_BUFFER_SECTION
|
|
# define USB_BUFFER_SECTION ".bss" /* if user has not selected a named section */
|
|
#endif
|
|
|
|
/* Derive Output, Input and DataDirection ports from port names */
|
|
#ifndef USB_CFG_IOPORTNAME
|
|
#error "You must define USB_CFG_IOPORTNAME in usbconfig.h, see usbconfig-prototype.h"
|
|
#endif
|
|
|
|
#define USBOUT USB_OUTPORT(USB_CFG_IOPORTNAME)
|
|
#define USB_PULLUP_OUT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
|
|
#define USBIN USB_INPORT(USB_CFG_IOPORTNAME)
|
|
#define USBDDR USB_DDRPORT(USB_CFG_IOPORTNAME)
|
|
#define USB_PULLUP_DDR USB_DDRPORT(USB_CFG_PULLUP_IOPORTNAME)
|
|
|
|
#define USBMINUS USB_CFG_DMINUS_BIT
|
|
#define USBPLUS USB_CFG_DPLUS_BIT
|
|
#define USBIDLE (1<<USB_CFG_DMINUS_BIT) /* value representing J state */
|
|
#define USBMASK ((1<<USB_CFG_DPLUS_BIT) | (1<<USB_CFG_DMINUS_BIT)) /* mask for USB I/O bits */
|
|
|
|
/* defines for backward compatibility with older driver versions: */
|
|
#define USB_CFG_IOPORT USB_OUTPORT(USB_CFG_IOPORTNAME)
|
|
#ifdef USB_CFG_PULLUP_IOPORTNAME
|
|
#define USB_CFG_PULLUP_IOPORT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
|
|
#endif
|
|
|
|
|
|
#define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */
|
|
|
|
/* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */
|
|
|
|
#ifndef USB_INTR_CFG /* allow user to override our default */
|
|
# if defined EICRA
|
|
# define USB_INTR_CFG EICRA
|
|
# else
|
|
# define USB_INTR_CFG MCUCR
|
|
# endif
|
|
#endif
|
|
#ifndef USB_INTR_CFG_SET /* allow user to override our default */
|
|
# define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */
|
|
#endif
|
|
#ifndef USB_INTR_CFG_CLR /* allow user to override our default */
|
|
# define USB_INTR_CFG_CLR 0 /* no bits to clear */
|
|
#endif
|
|
|
|
#ifndef USB_INTR_ENABLE /* allow user to override our default */
|
|
# if defined GIMSK
|
|
# define USB_INTR_ENABLE GIMSK
|
|
# elif defined EIMSK
|
|
# define USB_INTR_ENABLE EIMSK
|
|
# else
|
|
# define USB_INTR_ENABLE GICR
|
|
# endif
|
|
#endif
|
|
#ifndef USB_INTR_ENABLE_BIT /* allow user to override our default */
|
|
# define USB_INTR_ENABLE_BIT INT0
|
|
#endif
|
|
|
|
#ifndef USB_INTR_PENDING /* allow user to override our default */
|
|
# if defined EIFR
|
|
# define USB_INTR_PENDING EIFR
|
|
# else
|
|
# define USB_INTR_PENDING GIFR
|
|
# endif
|
|
#endif
|
|
#ifndef USB_INTR_PENDING_BIT /* allow user to override our default */
|
|
# define USB_INTR_PENDING_BIT INTF0
|
|
#endif
|
|
|
|
/*
|
|
The defines above don't work for the following chips
|
|
at90c8534: no ISC0?, no PORTB, can't find a data sheet
|
|
at86rf401: no PORTB, no MCUCR etc, low clock rate
|
|
atmega103: no ISC0? (maybe omission in header, can't find data sheet)
|
|
atmega603: not defined in avr-libc
|
|
at43usb320, at43usb355, at76c711: have USB anyway
|
|
at94k: is different...
|
|
|
|
at90s1200, attiny11, attiny12, attiny15, attiny28: these have no RAM
|
|
*/
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/* ----------------- USB Specification Constants and Types ----------------- */
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* USB Token values */
|
|
#define USBPID_SETUP 0x2d
|
|
#define USBPID_OUT 0xe1
|
|
#define USBPID_IN 0x69
|
|
#define USBPID_DATA0 0xc3
|
|
#define USBPID_DATA1 0x4b
|
|
|
|
#define USBPID_ACK 0xd2
|
|
#define USBPID_NAK 0x5a
|
|
#define USBPID_STALL 0x1e
|
|
|
|
#ifndef __ASSEMBLER__
|
|
typedef union usbWord{
|
|
unsigned word;
|
|
uchar bytes[2];
|
|
}usbWord_t;
|
|
|
|
typedef struct usbRequest{
|
|
uchar bmRequestType;
|
|
uchar bRequest;
|
|
usbWord_t wValue;
|
|
usbWord_t wIndex;
|
|
usbWord_t wLength;
|
|
}usbRequest_t;
|
|
/* This structure matches the 8 byte setup request */
|
|
#endif
|
|
|
|
/* bmRequestType field in USB setup:
|
|
* d t t r r r r r, where
|
|
* d ..... direction: 0=host->device, 1=device->host
|
|
* t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved
|
|
* r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other
|
|
*/
|
|
|
|
/* USB setup recipient values */
|
|
#define USBRQ_RCPT_MASK 0x1f
|
|
#define USBRQ_RCPT_DEVICE 0
|
|
#define USBRQ_RCPT_INTERFACE 1
|
|
#define USBRQ_RCPT_ENDPOINT 2
|
|
|
|
/* USB request type values */
|
|
#define USBRQ_TYPE_MASK 0x60
|
|
#define USBRQ_TYPE_STANDARD (0<<5)
|
|
#define USBRQ_TYPE_CLASS (1<<5)
|
|
#define USBRQ_TYPE_VENDOR (2<<5)
|
|
|
|
/* USB direction values: */
|
|
#define USBRQ_DIR_MASK 0x80
|
|
#define USBRQ_DIR_HOST_TO_DEVICE (0<<7)
|
|
#define USBRQ_DIR_DEVICE_TO_HOST (1<<7)
|
|
|
|
/* USB Standard Requests */
|
|
#define USBRQ_GET_STATUS 0
|
|
#define USBRQ_CLEAR_FEATURE 1
|
|
#define USBRQ_SET_FEATURE 3
|
|
#define USBRQ_SET_ADDRESS 5
|
|
#define USBRQ_GET_DESCRIPTOR 6
|
|
#define USBRQ_SET_DESCRIPTOR 7
|
|
#define USBRQ_GET_CONFIGURATION 8
|
|
#define USBRQ_SET_CONFIGURATION 9
|
|
#define USBRQ_GET_INTERFACE 10
|
|
#define USBRQ_SET_INTERFACE 11
|
|
#define USBRQ_SYNCH_FRAME 12
|
|
|
|
/* USB descriptor constants */
|
|
#define USBDESCR_DEVICE 1
|
|
#define USBDESCR_CONFIG 2
|
|
#define USBDESCR_STRING 3
|
|
#define USBDESCR_INTERFACE 4
|
|
#define USBDESCR_ENDPOINT 5
|
|
#define USBDESCR_HID 0x21
|
|
#define USBDESCR_HID_REPORT 0x22
|
|
#define USBDESCR_HID_PHYS 0x23
|
|
|
|
#define USBATTR_BUSPOWER 0x80
|
|
#define USBATTR_SELFPOWER 0x40
|
|
#define USBATTR_REMOTEWAKE 0x20
|
|
|
|
/* USB HID Requests */
|
|
#define USBRQ_HID_GET_REPORT 0x01
|
|
#define USBRQ_HID_GET_IDLE 0x02
|
|
#define USBRQ_HID_GET_PROTOCOL 0x03
|
|
#define USBRQ_HID_SET_REPORT 0x09
|
|
#define USBRQ_HID_SET_IDLE 0x0a
|
|
#define USBRQ_HID_SET_PROTOCOL 0x0b
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
#endif /* __usbdrv_h_included__ */
|