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/* Name: usbconfig.h
* Project: AVR USB driver
* Author: Christian Starkjohann
* Creation Date: 2005-04-01
* Tabsize: 4
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbconfig-prototype.h 692 2008-11-07 15:07:40Z cs $
#ifndef __usbconfig_h_included__
#define __usbconfig_h_included__
#ifndef __ASSEMBLER__
extern void usbEventResetReady(void);
#define USB_RESET_HOOK(isReset) if(!isReset){usbEventResetReady();}
General Description:
This file is an example configuration (with inline documentation) for the USB
driver. It configures AVR-USB for USB D+ connected to Port D bit 2 (which is
also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
wire the lines to any other port, as long as D+ is also wired to INT0 (or any
other hardware interrupt, as long as it is the highest level interrupt, see
section at the end of this file).
/* ---------------------------- Hardware Config ---------------------------- */
/* This is the port where the USB bus is connected. When you configure it to
* "B", the registers PORTB, PINB and DDRB will be used.
/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
* This may be any bit in the port.
/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
* This may be any bit in the port. Please note that D+ must also be connected
* to interrupt pin INT0! [You can also use other interrupts, see section
* "Optional MCU Description" below, or you can connect D- to the interrupt, as
* it is required if you use the USB_COUNT_SOF feature. If you use D- for the
* interrupt, the USB interrupt will also be triggered at Start-Of-Frame
* markers every millisecond.]
#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
/* Clock rate of the AVR in MHz. Legal values are 12000, 12800, 15000, 16000,
* 16500 and 20000. The 12.8 MHz and 16.5 MHz versions of the code require no
* crystal, they tolerate +/- 1% deviation from the nominal frequency. All
* other rates require a precision of 2000 ppm and thus a crystal!
* Default if not specified: 12 MHz
/* ----------------------- Optional Hardware Config ------------------------ */
/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
* V+, you can connect and disconnect the device from firmware by calling
* the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
* This constant defines the port on which the pullup resistor is connected.
/* #define USB_CFG_PULLUP_BIT 4 */
/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
* above) where the 1.5k pullup resistor is connected. See description
* above for details.
/* --------------------------- Functional Range ---------------------------- */
/* Define this to 1 if you want to compile a version with two endpoints: The
* default control endpoint 0 and an interrupt-in endpoint (any other endpoint
* number).
/* Define this to 1 if you want to compile a version with three endpoints: The
* default control endpoint 0, an interrupt-in endpoint 3 (or the number
* configured below) and a catch-all default interrupt-in endpoint as above.
* You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
#define USB_CFG_EP3_NUMBER 3
/* If the so-called endpoint 3 is used, it can now be configured to any other
* endpoint number (except 0) with this macro. Default if undefined is 3.
/* The above macro defines the startup condition for data toggling on the
* interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
* Since the token is toggled BEFORE sending any data, the first packet is
* sent with the oposite value of this configuration!
/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
* for endpoint 1 (interrupt endpoint). Although you may not need this feature,
* it is required by the standard. We have made it a config option because it
* bloats the code considerably.
/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
* want to send any data over them. If this macro is defined to 1, functions
* usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
* you need the interrupt-in endpoints in order to comply to an interface
* (e.g. HID), but never want to send any data. This option saves a couple
* of bytes in flash memory and the transmit buffers in RAM.
/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
* interval. The value is in milliseconds and must not be less than 10 ms for
* low speed devices.
/* Define this to 1 if the device has its own power supply. Set it to 0 if the
* device is powered from the USB bus.
/* Set this variable to the maximum USB bus power consumption of your device.
* The value is in milliamperes. [It will be divided by two since USB
* communicates power requirements in units of 2 mA.]
/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
* transfers. Set it to 0 if you don't need it and want to save a couple of
* bytes.
/* Set this to 1 if you need to send control replies which are generated
* "on the fly" when usbFunctionRead() is called. If you only want to send
* data from a static buffer, set it to 0 and return the data from
* usbFunctionSetup(). This saves a couple of bytes.
/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
* You must implement the function usbFunctionWriteOut() which receives all
* interrupt/bulk data sent to any endpoint other than 0. The endpoint number
* can be found in 'usbRxToken'.
/* Define this to 1 if you want flowcontrol over USB data. See the definition
* of the macros usbDisableAllRequests() and usbEnableAllRequests() in
* usbdrv.h.
/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
* in a single control-in or control-out transfer. Note that the capability
* for long transfers increases the driver size.
/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
/* This macro is a hook if you want to do unconventional things. If it is
* defined, it's inserted at the beginning of received message processing.
* If you eat the received message and don't want default processing to
* proceed, do a return after doing your things. One possible application
* (besides debugging) is to flash a status LED on each packet.
/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
/* This macro is a hook if you need to know when an USB RESET occurs. It has
* one parameter which distinguishes between the start of RESET state and its
* end.
/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
/* This macro (if defined) is executed when a USB SET_ADDRESS request was
* received.
#define USB_COUNT_SOF 1
/* define this macro to 1 if you need the global variable "usbSofCount" which
* counts SOF packets. This feature requires that the hardware interrupt is
* connected to D- instead of D+.
/* #ifdef __ASSEMBLER__
* macro myAssemblerMacro
* in YL, TCNT0
* sts timer0Snapshot, YL
* endm
* #endif
* #define USB_SOF_HOOK myAssemblerMacro
* This macro (if defined) is executed in the assembler module when a
* Start Of Frame condition is detected. It is recommended to define it to
* the name of an assembler macro which is defined here as well so that more
* than one assembler instruction can be used. The macro may use the register
* YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
* immediately after an SOF pulse may be lost and must be retried by the host.
* What can you do with this hook? Since the SOF signal occurs exactly every
* 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
* designs running on the internal RC oscillator.
* Please note that Start Of Frame detection works only if D- is wired to the
/* define this macro to 1 if you want to filter out duplicate data packets
* sent by the host. Duplicates occur only as a consequence of communication
* errors, when the host does not receive an ACK. Please note that you need to
* implement the filtering yourself in usbFunctionWriteOut() and
* usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
* for each control- and out-endpoint to check for duplicate packets.
/* define this macro to 1 if you want the function usbMeasureFrameLength()
* compiled in. This function can be used to calibrate the AVR's RC oscillator.
/* -------------------------- Device Description --------------------------- */
#define USB_CFG_VENDOR_ID 0xc0, 0x16
/* USB vendor ID for the device, low byte first. If you have registered your
* own Vendor ID, define it here. Otherwise you use one of obdev's free shared
* VID/PID pairs. Be sure to read USBID-License.txt for rules!
#define USB_CFG_DEVICE_ID 0xdf, 0x05 /* obdev's shared PID for HIDs */
/* This is the ID of the product, low byte first. It is interpreted in the
* scope of the vendor ID. If you have registered your own VID with
* or if you have licensed a PID from somebody else, define it here. Otherwise
* you use obdev's free shared VID/PID pair. Be sure to read the rules in
* USBID-License.txt!
#define USB_CFG_DEVICE_VERSION 0x00, 0x02
/* Version number of the device: Minor number first, then major number.
#define USB_CFG_VENDOR_NAME 'c','r','e','a','t','i','v','e','p','o','n','y','.','c','o','m'
/* These two values define the vendor name returned by the USB device. The name
* must be given as a list of characters under single quotes. The characters
* are interpreted as Unicode (UTF-16) entities.
* If you don't want a vendor name string, undefine these macros.
* ALWAYS define a vendor name containing your Internet domain name if you use
* obdev's free shared VID/PID pair. See the file USBID-License.txt for
* details.
#define USB_CFG_DEVICE_NAME 'S','i','m','p','l','e',' ','R','e','m','o','t','e'
/* Same as above for the device name. If you don't want a device name, undefine
* the macros. See the file USBID-License.txt before you assign a name if you
* use a shared VID/PID.
/*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */
/* Same as above for the serial number. If you don't want a serial number,
* undefine the macros.
* It may be useful to provide the serial number through other means than at
* compile time. See the section about descriptor properties below for how
* to fine tune control over USB descriptors such as the string descriptor
* for the serial number.
/* See USB specification if you want to conform to an existing device class.
* Class 0xff is "vendor specific".
/* See USB specification if you want to conform to an existing device class or
* protocol. The following classes must be set at interface level:
* HID class is 3, no subclass and protocol required (but may be useful!)
* CDC class is 2, use subclass 2 and protocol 1 for ACM
/* Define this to the length of the HID report descriptor, if you implement
* an HID device. Otherwise don't define it or define it to 0.
* If you use this define, you must add a PROGMEM character array named
* "usbHidReportDescriptor" to your code which contains the report descriptor.
* Don't forget to keep the array and this define in sync!
/* #define USB_PUBLIC static */
/* Use the define above if you #include usbdrv.c instead of linking against it.
* This technique saves a couple of bytes in flash memory.
/* ------------------- Fine Control over USB Descriptors ------------------- */
/* If you don't want to use the driver's default USB descriptors, you can
* provide our own. These can be provided as (1) fixed length static data in
* flash memory, (2) fixed length static data in RAM or (3) dynamically at
* runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
* information about this function.
* Descriptor handling is configured through the descriptor's properties. If
* no properties are defined or if they are 0, the default descriptor is used.
* Possible properties are:
* + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
* at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
* used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
* you want RAM pointers.
* + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
* in static memory is in RAM, not in flash memory.
* + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
* the driver must know the descriptor's length. The descriptor itself is
* found at the address of a well known identifier (see below).
* List of static descriptor names (must be declared PROGMEM if in flash):
* char usbDescriptorDevice[];
* char usbDescriptorConfiguration[];
* char usbDescriptorHidReport[];
* char usbDescriptorString0[];
* int usbDescriptorStringVendor[];
* int usbDescriptorStringDevice[];
* int usbDescriptorStringSerialNumber[];
* Other descriptors can't be provided statically, they must be provided
* dynamically at runtime.
* Descriptor properties are or-ed or added together, e.g.:
* The following descriptors are defined:
* USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
* Note about string descriptors: String descriptors are not just strings, they
* are Unicode strings prefixed with a 2 byte header. Example:
* int serialNumberDescriptor[] = {
* 'S', 'e', 'r', 'i', 'a', 'l'
* };
/* ----------------------- Optional MCU Description ------------------------ */
/* The following configurations have working defaults in usbdrv.h. You
* usually don't need to set them explicitly. Only if you want to run
* the driver on a device which is not yet supported or with a compiler
* which is not fully supported (such as IAR C) or if you use a differnt
* interrupt than INT0, you may have to define some of these.
/* #define USB_INTR_CFG MCUCR */
/* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */
/* #define USB_INTR_CFG_CLR 0 */
/* #define USB_INTR_ENABLE_BIT INT0 */
#endif /* __usbconfig_h_included__ */