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