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/* Name: usbdrv.c |
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/* Name: usbdrv.c |
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* Project: AVR USB driver |
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* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers |
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* Author: Christian Starkjohann |
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* Author: Christian Starkjohann |
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* Creation Date: 2004-12-29 |
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* Creation Date: 2004-12-29 |
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* Tabsize: 4 |
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* Tabsize: 4 |
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* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH |
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* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH |
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* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) |
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* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) |
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* This Revision: $Id: usbdrv.c,v 1.3 2007/06/07 13:53:47 harbaum Exp $ |
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|
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*/ |
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*/ |
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|
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|
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#include "iarcompat.h" |
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|
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#ifndef __IAR_SYSTEMS_ICC__ |
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|
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# include <avr/io.h> |
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|
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# include <avr/pgmspace.h> |
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|
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#endif |
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|
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#include "usbdrv.h" |
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#include "usbdrv.h" |
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#include "oddebug.h" |
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#include "oddebug.h" |
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|
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|
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/* |
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/* |
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General Description: |
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General Description: |
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This module implements the C-part of the USB driver. See usbdrv.h for a |
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This module implements the C-part of the USB driver. See usbdrv.h for a |
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documentation of the entire driver. |
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documentation of the entire driver. |
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*/ |
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*/ |
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|
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|
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#ifndef IAR_SECTION |
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|
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#define IAR_SECTION(arg) |
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|
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#define __no_init |
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|
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#endif |
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|
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/* The macro IAR_SECTION is a hack to allow IAR-cc compatibility. On gcc, it |
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|
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* is defined to nothing. __no_init is required on IAR. |
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|
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*/ |
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|
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|
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|
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/* ------------------------------------------------------------------------- */ |
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/* ------------------------------------------------------------------------- */ |
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|
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|
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/* raw USB registers / interface to assembler code: */ |
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/* raw USB registers / interface to assembler code: */ |
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uchar usbRxBuf[2*USB_BUFSIZE]; /* raw RX buffer: PID, 8 bytes data, 2 bytes CRC */ |
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uchar usbRxBuf[2*USB_BUFSIZE]; /* raw RX buffer: PID, 8 bytes data, 2 bytes CRC */ |
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uchar usbInputBufOffset; /* offset in usbRxBuf used for low level receiving */ |
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uchar usbInputBufOffset; /* offset in usbRxBuf used for low level receiving */ |
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uchar usbDeviceAddr; /* assigned during enumeration, defaults to 0 */ |
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uchar usbDeviceAddr; /* assigned during enumeration, defaults to 0 */ |
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uchar usbNewDeviceAddr; /* device ID which should be set after status phase */ |
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uchar usbNewDeviceAddr; /* device ID which should be set after status phase */ |
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uchar usbConfiguration; /* currently selected configuration. Administered by driver, but not used */ |
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uchar usbConfiguration; /* currently selected configuration. Administered by driver, but not used */ |
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volatile schar usbRxLen; /* = 0; number of bytes in usbRxBuf; 0 means free, -1 for flow control */ |
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volatile schar usbRxLen; /* = 0; number of bytes in usbRxBuf; 0 means free, -1 for flow control */ |
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uchar usbCurrentTok; /* last token received, if more than 1 rx endpoint: MSb=endpoint */ |
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uchar usbCurrentTok; /* last token received or endpoint number for last OUT token if != 0 */ |
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uchar usbRxToken; /* token for data we received; if more than 1 rx endpoint: MSb=endpoint */ |
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uchar usbRxToken; /* token for data we received; or endpont number for last OUT */ |
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uchar usbMsgLen = 0xff; /* remaining number of bytes, no msg to send if -1 (see usbMsgPtr) */ |
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|
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volatile uchar usbTxLen = USBPID_NAK; /* number of bytes to transmit with next IN token or handshake token */ |
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volatile uchar usbTxLen = USBPID_NAK; /* number of bytes to transmit with next IN token or handshake token */ |
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uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbTxLen contains handshake token */ |
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uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbTxLen contains handshake token */ |
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#if USB_CFG_HAVE_INTRIN_ENDPOINT |
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#if USB_COUNT_SOF |
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volatile uchar usbTxLen1 = USBPID_NAK; /* TX count for endpoint 1 */ |
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volatile uchar usbSofCount; /* incremented by assembler module every SOF */ |
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|
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#endif |
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uchar usbTxBuf1[USB_BUFSIZE]; /* TX data for endpoint 1 */ |
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#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE |
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|
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usbTxStatus_t usbTxStatus1; |
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#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
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# if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
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volatile uchar usbTxLen3 = USBPID_NAK; /* TX count for endpoint 1 */ |
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usbTxStatus_t usbTxStatus3; |
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uchar usbTxBuf3[USB_BUFSIZE]; /* TX data for endpoint 1 */ |
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# endif |
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#endif |
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#endif |
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|
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#if USB_CFG_CHECK_DATA_TOGGLING |
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|
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uchar usbCurrentDataToken;/* when we check data toggling to ignore duplicate packets */ |
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#endif |
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#endif |
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|
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|
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/* USB status registers / not shared with asm code */ |
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/* USB status registers / not shared with asm code */ |
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uchar *usbMsgPtr; /* data to transmit next -- ROM or RAM address */ |
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usbMsgPtr_t usbMsgPtr; /* data to transmit next -- ROM or RAM address */ |
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|
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static usbMsgLen_t usbMsgLen = USB_NO_MSG; /* remaining number of bytes */ |
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static uchar usbMsgFlags; /* flag values see below */ |
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static uchar usbMsgFlags; /* flag values see below */ |
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|
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|
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#define USB_FLG_TX_PACKET (1<<0) |
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|
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/* Leave free 6 bits after TX_PACKET. This way we can increment usbMsgFlags to toggle TX_PACKET */ |
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|
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#define USB_FLG_MSGPTR_IS_ROM (1<<6) |
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#define USB_FLG_MSGPTR_IS_ROM (1<<6) |
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#define USB_FLG_USE_DEFAULT_RW (1<<7) |
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#define USB_FLG_USE_USER_RW (1<<7) |
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|
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|
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/* |
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/* |
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optimizing hints: |
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optimizing hints: |
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- do not post/pre inc/dec integer values in operations |
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- do not post/pre inc/dec integer values in operations |
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- assign value of PRG_RDB() to register variables and don't use side effects in arg |
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- assign value of USB_READ_FLASH() to register variables and don't use side effects in arg |
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- use narrow scope for variables which should be in X/Y/Z register |
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- use narrow scope for variables which should be in X/Y/Z register |
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- assign char sized expressions to variables to force 8 bit arithmetics |
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- assign char sized expressions to variables to force 8 bit arithmetics |
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*/ |
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*/ |
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|
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|
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/* ------------------------------------------------------------------------- */ |
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/* -------------------------- String Descriptors --------------------------- */ |
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|
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|
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#if USB_CFG_DESCR_PROPS_STRINGS == 0 |
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#if USB_CFG_DESCR_PROPS_STRINGS == 0 |
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|
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|
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#if USB_CFG_DESCR_PROPS_STRING_0 == 0 |
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#if USB_CFG_DESCR_PROPS_STRING_0 == 0 |
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#undef USB_CFG_DESCR_PROPS_STRING_0 |
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#undef USB_CFG_DESCR_PROPS_STRING_0 |
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#define USB_CFG_DESCR_PROPS_STRING_0 sizeof(usbDescriptorString0) |
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#define USB_CFG_DESCR_PROPS_STRING_0 sizeof(usbDescriptorString0) |
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PROGMEM char usbDescriptorString0[] = { /* language descriptor */ |
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PROGMEM const char usbDescriptorString0[] = { /* language descriptor */ |
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4, /* sizeof(usbDescriptorString0): length of descriptor in bytes */ |
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4, /* sizeof(usbDescriptorString0): length of descriptor in bytes */ |
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3, /* descriptor type */ |
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3, /* descriptor type */ |
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0x09, 0x04, /* language index (0x0409 = US-English) */ |
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0x09, 0x04, /* language index (0x0409 = US-English) */ |
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}; |
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}; |
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#endif |
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#endif |
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|
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|
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#if USB_CFG_DESCR_PROPS_STRING_VENDOR == 0 && USB_CFG_VENDOR_NAME_LEN |
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#if USB_CFG_DESCR_PROPS_STRING_VENDOR == 0 && USB_CFG_VENDOR_NAME_LEN |
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#undef USB_CFG_DESCR_PROPS_STRING_VENDOR |
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#undef USB_CFG_DESCR_PROPS_STRING_VENDOR |
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#define USB_CFG_DESCR_PROPS_STRING_VENDOR sizeof(usbDescriptorStringVendor) |
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#define USB_CFG_DESCR_PROPS_STRING_VENDOR sizeof(usbDescriptorStringVendor) |
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PROGMEM int usbDescriptorStringVendor[] = { |
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PROGMEM const int usbDescriptorStringVendor[] = { |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_VENDOR_NAME_LEN), |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_VENDOR_NAME_LEN), |
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USB_CFG_VENDOR_NAME |
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USB_CFG_VENDOR_NAME |
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}; |
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}; |
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#endif |
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#endif |
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|
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|
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#if USB_CFG_DESCR_PROPS_STRING_DEVICE == 0 && USB_CFG_DEVICE_NAME_LEN |
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#if USB_CFG_DESCR_PROPS_STRING_PRODUCT == 0 && USB_CFG_DEVICE_NAME_LEN |
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#undef USB_CFG_DESCR_PROPS_STRING_DEVICE |
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#undef USB_CFG_DESCR_PROPS_STRING_PRODUCT |
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#define USB_CFG_DESCR_PROPS_STRING_DEVICE sizeof(usbDescriptorStringDevice) |
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#define USB_CFG_DESCR_PROPS_STRING_PRODUCT sizeof(usbDescriptorStringDevice) |
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PROGMEM int usbDescriptorStringDevice[] = { |
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PROGMEM const int usbDescriptorStringDevice[] = { |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_DEVICE_NAME_LEN), |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_DEVICE_NAME_LEN), |
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USB_CFG_DEVICE_NAME |
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USB_CFG_DEVICE_NAME |
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}; |
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}; |
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#endif |
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#endif |
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|
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|
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#if USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER == 0 && USB_CFG_SERIAL_NUMBER_LEN |
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#if USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER == 0 && USB_CFG_SERIAL_NUMBER_LEN |
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#undef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER |
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#undef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER |
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#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER sizeof(usbDescriptorStringSerialNumber) |
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#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER sizeof(usbDescriptorStringSerialNumber) |
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PROGMEM int usbDescriptorStringSerialNumber[] = { |
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PROGMEM const int usbDescriptorStringSerialNumber[] = { |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_SERIAL_NUMBER_LEN), |
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USB_STRING_DESCRIPTOR_HEADER(USB_CFG_SERIAL_NUMBER_LEN), |
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USB_CFG_SERIAL_NUMBER |
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USB_CFG_SERIAL_NUMBER |
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}; |
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}; |
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#endif |
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#endif |
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|
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|
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#endif /* USB_CFG_DESCR_PROPS_STRINGS == 0 */ |
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#endif /* USB_CFG_DESCR_PROPS_STRINGS == 0 */ |
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|
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|
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|
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/* --------------------------- Device Descriptor --------------------------- */ |
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|
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|
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#if USB_CFG_DESCR_PROPS_DEVICE == 0 |
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#if USB_CFG_DESCR_PROPS_DEVICE == 0 |
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#undef USB_CFG_DESCR_PROPS_DEVICE |
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#undef USB_CFG_DESCR_PROPS_DEVICE |
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#define USB_CFG_DESCR_PROPS_DEVICE sizeof(usbDescriptorDevice) |
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#define USB_CFG_DESCR_PROPS_DEVICE sizeof(usbDescriptorDevice) |
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PROGMEM char usbDescriptorDevice[] = { /* USB device descriptor */ |
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PROGMEM const char usbDescriptorDevice[] = { /* USB device descriptor */ |
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18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */ |
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18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */ |
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USBDESCR_DEVICE, /* descriptor type */ |
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USBDESCR_DEVICE, /* descriptor type */ |
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0x10, 0x01, /* USB version supported */ |
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0x10, 0x01, /* USB version supported */ |
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USB_CFG_DEVICE_CLASS, |
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USB_CFG_DEVICE_CLASS, |
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USB_CFG_DEVICE_SUBCLASS, |
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USB_CFG_DEVICE_SUBCLASS, |
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0, /* protocol */ |
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0, /* protocol */ |
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8, /* max packet size */ |
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8, /* max packet size */ |
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|
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/* the following two casts affect the first byte of the constant only, but |
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|
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* that's sufficient to avoid a warning with the default values. |
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|
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*/ |
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USB_CFG_VENDOR_ID, /* 2 bytes */ |
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(char)USB_CFG_VENDOR_ID,/* 2 bytes */ |
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USB_CFG_DEVICE_ID, /* 2 bytes */ |
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(char)USB_CFG_DEVICE_ID,/* 2 bytes */ |
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USB_CFG_DEVICE_VERSION, /* 2 bytes */ |
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USB_CFG_DEVICE_VERSION, /* 2 bytes */ |
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USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */ |
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USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */ |
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USB_CFG_DESCR_PROPS_STRING_DEVICE != 0 ? 2 : 0, /* product string index */ |
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USB_CFG_DESCR_PROPS_STRING_PRODUCT != 0 ? 2 : 0, /* product string index */ |
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USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */ |
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USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */ |
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1, /* number of configurations */ |
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1, /* number of configurations */ |
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}; |
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}; |
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#endif |
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#endif |
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|
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|
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|
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/* ----------------------- Configuration Descriptor ------------------------ */ |
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|
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|
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#if USB_CFG_DESCR_PROPS_HID_REPORT != 0 && USB_CFG_DESCR_PROPS_HID == 0 |
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#if USB_CFG_DESCR_PROPS_HID_REPORT != 0 && USB_CFG_DESCR_PROPS_HID == 0 |
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#undef USB_CFG_DESCR_PROPS_HID |
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#undef USB_CFG_DESCR_PROPS_HID |
139 |
#define USB_CFG_DESCR_PROPS_HID 9 /* length of HID descriptor in config descriptor below */ |
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#define USB_CFG_DESCR_PROPS_HID 9 /* length of HID descriptor in config descriptor below */ |
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#endif |
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#endif |
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|
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|
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#if USB_CFG_DESCR_PROPS_CONFIGURATION == 0 |
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#if USB_CFG_DESCR_PROPS_CONFIGURATION == 0 |
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#undef USB_CFG_DESCR_PROPS_CONFIGURATION |
138 |
#undef USB_CFG_DESCR_PROPS_CONFIGURATION |
144 |
#define USB_CFG_DESCR_PROPS_CONFIGURATION sizeof(usbDescriptorConfiguration) |
139 |
#define USB_CFG_DESCR_PROPS_CONFIGURATION sizeof(usbDescriptorConfiguration) |
145 |
PROGMEM char usbDescriptorConfiguration[] = { /* USB configuration descriptor */ |
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PROGMEM const char usbDescriptorConfiguration[] = { /* USB configuration descriptor */ |
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9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */ |
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9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */ |
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USBDESCR_CONFIG, /* descriptor type */ |
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USBDESCR_CONFIG, /* descriptor type */ |
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18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + (USB_CFG_DESCR_PROPS_HID & 0xff), 0, |
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18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 + |
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|
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(USB_CFG_DESCR_PROPS_HID & 0xff), 0, |
149 |
/* total length of data returned (including inlined descriptors) */ |
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/* total length of data returned (including inlined descriptors) */ |
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1, /* number of interfaces in this configuration */ |
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1, /* number of interfaces in this configuration */ |
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1, /* index of this configuration */ |
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1, /* index of this configuration */ |
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0, /* configuration name string index */ |
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0, /* configuration name string index */ |
153 |
#if USB_CFG_IS_SELF_POWERED |
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#if USB_CFG_IS_SELF_POWERED |
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USBATTR_SELFPOWER, /* attributes */ |
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(1 << 7) | USBATTR_SELFPOWER, /* attributes */ |
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#else |
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#else |
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USBATTR_BUSPOWER, /* attributes */ |
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(1 << 7), /* attributes */ |
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#endif |
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#endif |
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USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */ |
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USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */ |
159 |
/* interface descriptor follows inline: */ |
155 |
/* interface descriptor follows inline: */ |
160 |
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ |
156 |
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ |
161 |
USBDESCR_INTERFACE, /* descriptor type */ |
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USBDESCR_INTERFACE, /* descriptor type */ |
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0, /* index of this interface */ |
158 |
0, /* index of this interface */ |
163 |
0, /* alternate setting for this interface */ |
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0, /* alternate setting for this interface */ |
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USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */ |
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USB_CFG_HAVE_INTRIN_ENDPOINT + USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */ |
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USB_CFG_INTERFACE_CLASS, |
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USB_CFG_INTERFACE_CLASS, |
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USB_CFG_INTERFACE_SUBCLASS, |
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USB_CFG_INTERFACE_SUBCLASS, |
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USB_CFG_INTERFACE_PROTOCOL, |
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USB_CFG_INTERFACE_PROTOCOL, |
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0, /* string index for interface */ |
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0, /* string index for interface */ |
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#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */ |
165 |
#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */ |
170 |
9, /* sizeof(usbDescrHID): length of descriptor in bytes */ |
166 |
9, /* sizeof(usbDescrHID): length of descriptor in bytes */ |
171 |
USBDESCR_HID, /* descriptor type: HID */ |
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USBDESCR_HID, /* descriptor type: HID */ |
172 |
0x01, 0x01, /* BCD representation of HID version */ |
168 |
0x01, 0x01, /* BCD representation of HID version */ |
173 |
0x00, /* target country code */ |
169 |
0x00, /* target country code */ |
174 |
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */ |
170 |
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */ |
175 |
0x22, /* descriptor type: report */ |
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0x22, /* descriptor type: report */ |
176 |
USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */ |
172 |
USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */ |
177 |
#endif |
173 |
#endif |
178 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */ |
174 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */ |
179 |
7, /* sizeof(usbDescrEndpoint) */ |
175 |
7, /* sizeof(usbDescrEndpoint) */ |
180 |
USBDESCR_ENDPOINT, /* descriptor type = endpoint */ |
176 |
USBDESCR_ENDPOINT, /* descriptor type = endpoint */ |
181 |
0x81, /* IN endpoint number 1 */ |
177 |
(char)0x81, /* IN endpoint number 1 */ |
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|
178 |
0x03, /* attrib: Interrupt endpoint */ |
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|
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8, 0, /* maximum packet size */ |
- |
|
180 |
USB_CFG_INTR_POLL_INTERVAL, /* in ms */ |
- |
|
181 |
#endif |
- |
|
182 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 /* endpoint descriptor for endpoint 3 */ |
- |
|
183 |
7, /* sizeof(usbDescrEndpoint) */ |
- |
|
184 |
USBDESCR_ENDPOINT, /* descriptor type = endpoint */ |
- |
|
185 |
(char)(0x80 | USB_CFG_EP3_NUMBER), /* IN endpoint number 3 */ |
182 |
0x03, /* attrib: Interrupt endpoint */ |
186 |
0x03, /* attrib: Interrupt endpoint */ |
183 |
8, 0, /* maximum packet size */ |
187 |
8, 0, /* maximum packet size */ |
184 |
USB_CFG_INTR_POLL_INTERVAL, /* in ms */ |
188 |
USB_CFG_INTR_POLL_INTERVAL, /* in ms */ |
185 |
#endif |
189 |
#endif |
186 |
}; |
190 |
}; |
187 |
#endif |
191 |
#endif |
188 |
|
192 |
|
189 |
/* We don't use prog_int or prog_int16_t for compatibility with various libc |
193 |
/* ------------------------------------------------------------------------- */ |
- |
|
194 |
|
190 |
* versions. Here's an other compatibility hack: |
195 |
static inline void usbResetDataToggling(void) |
191 |
*/ |
196 |
{ |
192 |
#ifndef PRG_RDB |
197 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE |
- |
|
198 |
USB_SET_DATATOKEN1(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */ |
193 |
#define PRG_RDB(addr) pgm_read_byte(addr) |
199 |
# if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
- |
|
200 |
USB_SET_DATATOKEN3(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */ |
- |
|
201 |
# endif |
194 |
#endif |
202 |
#endif |
- |
|
203 |
} |
195 |
|
204 |
|
196 |
typedef union{ |
205 |
static inline void usbResetStall(void) |
- |
|
206 |
{ |
- |
|
207 |
#if USB_CFG_IMPLEMENT_HALT && USB_CFG_HAVE_INTRIN_ENDPOINT |
197 |
unsigned word; |
208 |
usbTxLen1 = USBPID_NAK; |
198 |
uchar *ptr; |
209 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
199 |
uchar bytes[2]; |
210 |
usbTxLen3 = USBPID_NAK; |
200 |
}converter_t; |
211 |
#endif |
201 |
/* We use this union to do type conversions. This is better optimized than |
- |
|
202 |
* type casts in gcc 3.4.3 and much better than using bit shifts to build |
- |
|
203 |
* ints from chars. Byte ordering is not a problem on an 8 bit platform. |
- |
|
- |
|
212 |
#endif |
204 |
*/ |
213 |
} |
205 |
|
214 |
|
206 |
/* ------------------------------------------------------------------------- */ |
215 |
/* ------------------------------------------------------------------------- */ |
207 |
|
216 |
|
- |
|
217 |
#if !USB_CFG_SUPPRESS_INTR_CODE |
208 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT |
218 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT |
209 |
void usbSetInterrupt(uchar *data, uchar len) |
219 |
static void usbGenericSetInterrupt(uchar *data, uchar len, usbTxStatus_t *txStatus) |
210 |
{ |
220 |
{ |
211 |
uchar *p, i; |
221 |
uchar *p; |
- |
|
222 |
char i; |
212 |
|
223 |
|
213 |
#if USB_CFG_IMPLEMENT_HALT |
224 |
#if USB_CFG_IMPLEMENT_HALT |
214 |
if(usbTxLen1 == USBPID_STALL) |
225 |
if(usbTxLen1 == USBPID_STALL) |
215 |
return; |
226 |
return; |
216 |
#endif |
227 |
#endif |
217 |
#if 0 /* No runtime checks! Caller is responsible for valid data! */ |
- |
|
218 |
if(len > 8) /* interrupt transfers are limited to 8 bytes */ |
- |
|
219 |
len = 8; |
- |
|
220 |
#endif |
- |
|
221 |
if(usbTxLen1 & 0x10){ /* packet buffer was empty */ |
228 |
if(txStatus->len & 0x10){ /* packet buffer was empty */ |
222 |
usbTxBuf1[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */ |
229 |
txStatus->buffer[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */ |
223 |
}else{ |
230 |
}else{ |
224 |
usbTxLen1 = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */ |
231 |
txStatus->len = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */ |
225 |
} |
232 |
} |
226 |
p = usbTxBuf1 + 1; |
233 |
p = txStatus->buffer + 1; |
227 |
for(i=len;i--;) |
234 |
i = len; |
- |
|
235 |
do{ /* if len == 0, we still copy 1 byte, but that's no problem */ |
228 |
*p++ = *data++; |
236 |
*p++ = *data++; |
- |
|
237 |
}while(--i > 0); /* loop control at the end is 2 bytes shorter than at beginning */ |
229 |
usbCrc16Append(&usbTxBuf1[1], len); |
238 |
usbCrc16Append(&txStatus->buffer[1], len); |
230 |
usbTxLen1 = len + 4; /* len must be given including sync byte */ |
239 |
txStatus->len = len + 4; /* len must be given including sync byte */ |
231 |
DBG2(0x21, usbTxBuf1, len + 3); |
240 |
DBG2(0x21 + (((int)txStatus >> 3) & 3), txStatus->buffer, len + 3); |
- |
|
241 |
} |
- |
|
242 |
|
- |
|
243 |
USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len) |
- |
|
244 |
{ |
- |
|
245 |
usbGenericSetInterrupt(data, len, &usbTxStatus1); |
232 |
} |
246 |
} |
233 |
#endif |
247 |
#endif |
234 |
|
248 |
|
235 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
249 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
236 |
void usbSetInterrupt3(uchar *data, uchar len) |
250 |
USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len) |
237 |
{ |
251 |
{ |
238 |
uchar *p, i; |
- |
|
239 |
|
- |
|
240 |
if(usbTxLen3 & 0x10){ /* packet buffer was empty */ |
- |
|
241 |
usbTxBuf3[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */ |
- |
|
242 |
}else{ |
- |
|
243 |
usbTxLen3 = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */ |
- |
|
244 |
} |
- |
|
245 |
p = usbTxBuf3 + 1; |
- |
|
246 |
for(i=len;i--;) |
- |
|
247 |
*p++ = *data++; |
- |
|
248 |
usbCrc16Append(&usbTxBuf3[1], len); |
252 |
usbGenericSetInterrupt(data, len, &usbTxStatus3); |
249 |
usbTxLen3 = len + 4; /* len must be given including sync byte */ |
- |
|
250 |
DBG2(0x23, usbTxBuf3, len + 3); |
- |
|
251 |
} |
253 |
} |
252 |
#endif |
254 |
#endif |
- |
|
255 |
#endif /* USB_CFG_SUPPRESS_INTR_CODE */ |
253 |
|
256 |
|
- |
|
257 |
/* ------------------ utilities for code following below ------------------- */ |
254 |
|
258 |
|
255 |
static uchar usbRead(uchar *data, uchar len) |
259 |
/* Use defines for the switch statement so that we can choose between an |
- |
|
260 |
* if()else if() and a switch/case based implementation. switch() is more |
- |
|
261 |
* efficient for a LARGE set of sequential choices, if() is better in all other |
- |
|
262 |
* cases. |
256 |
{ |
263 |
*/ |
257 |
#if USB_CFG_IMPLEMENT_FN_READ |
264 |
#if USB_CFG_USE_SWITCH_STATEMENT |
258 |
if(usbMsgFlags & USB_FLG_USE_DEFAULT_RW){ |
265 |
# define SWITCH_START(cmd) switch(cmd){{ |
- |
|
266 |
# define SWITCH_CASE(value) }break; case (value):{ |
- |
|
267 |
# define SWITCH_CASE2(v1,v2) }break; case (v1): case(v2):{ |
- |
|
268 |
# define SWITCH_CASE3(v1,v2,v3) }break; case (v1): case(v2): case(v3):{ |
- |
|
269 |
# define SWITCH_DEFAULT }break; default:{ |
- |
|
270 |
# define SWITCH_END }} |
- |
|
271 |
#else |
- |
|
272 |
# define SWITCH_START(cmd) {uchar _cmd = cmd; if(0){ |
- |
|
273 |
# define SWITCH_CASE(value) }else if(_cmd == (value)){ |
- |
|
274 |
# define SWITCH_CASE2(v1,v2) }else if(_cmd == (v1) || _cmd == (v2)){ |
- |
|
275 |
# define SWITCH_CASE3(v1,v2,v3) }else if(_cmd == (v1) || _cmd == (v2) || (_cmd == v3)){ |
- |
|
276 |
# define SWITCH_DEFAULT }else{ |
- |
|
277 |
# define SWITCH_END }} |
259 |
#endif |
278 |
#endif |
260 |
uchar i = len, *r = usbMsgPtr; |
- |
|
261 |
if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */ |
- |
|
262 |
while(i--){ |
- |
|
263 |
uchar c = PRG_RDB(r); /* assign to char size variable to enforce byte ops */ |
- |
|
264 |
*data++ = c; |
- |
|
265 |
r++; |
- |
|
266 |
} |
279 |
|
267 |
}else{ /* RAM data */ |
- |
|
268 |
while(i--) |
280 |
#ifndef USB_RX_USER_HOOK |
269 |
*data++ = *r++; |
281 |
#define USB_RX_USER_HOOK(data, len) |
270 |
} |
282 |
#endif |
271 |
usbMsgPtr = r; |
283 |
#ifndef USB_SET_ADDRESS_HOOK |
272 |
return len; |
- |
|
273 |
#if USB_CFG_IMPLEMENT_FN_READ |
284 |
#define USB_SET_ADDRESS_HOOK() |
274 |
}else{ |
- |
|
275 |
if(len != 0) /* don't bother app with 0 sized reads */ |
- |
|
276 |
return usbFunctionRead(data, len); |
- |
|
277 |
return 0; |
- |
|
278 |
} |
- |
|
279 |
#endif |
285 |
#endif |
280 |
} |
- |
|
281 |
|
286 |
|
- |
|
287 |
/* ------------------------------------------------------------------------- */ |
282 |
|
288 |
|
- |
|
289 |
/* We use if() instead of #if in the macro below because #if can't be used |
- |
|
290 |
* in macros and the compiler optimizes constant conditions anyway. |
- |
|
291 |
* This may cause problems with undefined symbols if compiled without |
- |
|
292 |
* optimizing! |
- |
|
293 |
*/ |
283 |
#define GET_DESCRIPTOR(cfgProp, staticName) \ |
294 |
#define GET_DESCRIPTOR(cfgProp, staticName) \ |
284 |
if(cfgProp){ \ |
295 |
if(cfgProp){ \ |
285 |
if((cfgProp) & USB_PROP_IS_RAM) \ |
296 |
if((cfgProp) & USB_PROP_IS_RAM) \ |
286 |
flags &= ~USB_FLG_MSGPTR_IS_ROM; \ |
297 |
flags = 0; \ |
287 |
if((cfgProp) & USB_PROP_IS_DYNAMIC){ \ |
298 |
if((cfgProp) & USB_PROP_IS_DYNAMIC){ \ |
288 |
replyLen = usbFunctionDescriptor(rq); \ |
299 |
len = usbFunctionDescriptor(rq); \ |
289 |
}else{ \ |
300 |
}else{ \ |
290 |
replyData = (uchar *)(staticName); \ |
301 |
len = USB_PROP_LENGTH(cfgProp); \ |
291 |
SET_REPLY_LEN((cfgProp) & 0xff); \ |
302 |
usbMsgPtr = (usbMsgPtr_t)(staticName); \ |
292 |
} \ |
303 |
} \ |
293 |
} |
304 |
} |
- |
|
305 |
|
294 |
/* We use if() instead of #if in the macro above because #if can't be used |
306 |
/* usbDriverDescriptor() is similar to usbFunctionDescriptor(), but used |
295 |
* in macros and the compiler optimizes constant conditions anyway. |
307 |
* internally for all types of descriptors. |
296 |
*/ |
308 |
*/ |
- |
|
309 |
static inline usbMsgLen_t usbDriverDescriptor(usbRequest_t *rq) |
- |
|
310 |
{ |
- |
|
311 |
usbMsgLen_t len = 0; |
- |
|
312 |
uchar flags = USB_FLG_MSGPTR_IS_ROM; |
297 |
|
313 |
|
- |
|
314 |
SWITCH_START(rq->wValue.bytes[1]) |
- |
|
315 |
SWITCH_CASE(USBDESCR_DEVICE) /* 1 */ |
- |
|
316 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_DEVICE, usbDescriptorDevice) |
- |
|
317 |
SWITCH_CASE(USBDESCR_CONFIG) /* 2 */ |
- |
|
318 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_CONFIGURATION, usbDescriptorConfiguration) |
- |
|
319 |
SWITCH_CASE(USBDESCR_STRING) /* 3 */ |
- |
|
320 |
#if USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC |
- |
|
321 |
if(USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_RAM) |
- |
|
322 |
flags = 0; |
- |
|
323 |
len = usbFunctionDescriptor(rq); |
- |
|
324 |
#else /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ |
- |
|
325 |
SWITCH_START(rq->wValue.bytes[0]) |
- |
|
326 |
SWITCH_CASE(0) |
- |
|
327 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_0, usbDescriptorString0) |
- |
|
328 |
SWITCH_CASE(1) |
- |
|
329 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_VENDOR, usbDescriptorStringVendor) |
- |
|
330 |
SWITCH_CASE(2) |
- |
|
331 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_PRODUCT, usbDescriptorStringDevice) |
- |
|
332 |
SWITCH_CASE(3) |
- |
|
333 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER, usbDescriptorStringSerialNumber) |
- |
|
334 |
SWITCH_DEFAULT |
- |
|
335 |
if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ |
- |
|
336 |
len = usbFunctionDescriptor(rq); |
- |
|
337 |
} |
- |
|
338 |
SWITCH_END |
- |
|
339 |
#endif /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ |
- |
|
340 |
#if USB_CFG_DESCR_PROPS_HID_REPORT /* only support HID descriptors if enabled */ |
- |
|
341 |
SWITCH_CASE(USBDESCR_HID) /* 0x21 */ |
- |
|
342 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID, usbDescriptorConfiguration + 18) |
- |
|
343 |
SWITCH_CASE(USBDESCR_HID_REPORT)/* 0x22 */ |
- |
|
344 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID_REPORT, usbDescriptorHidReport) |
- |
|
345 |
#endif |
- |
|
346 |
SWITCH_DEFAULT |
- |
|
347 |
if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ |
- |
|
348 |
len = usbFunctionDescriptor(rq); |
- |
|
349 |
} |
- |
|
350 |
SWITCH_END |
- |
|
351 |
usbMsgFlags = flags; |
- |
|
352 |
return len; |
- |
|
353 |
} |
298 |
|
354 |
|
299 |
/* Don't make this function static to avoid inlining. |
- |
|
300 |
* The entire function would become too large and exceed the range of |
- |
|
301 |
* relative jumps. |
- |
|
302 |
* 2006-02-25: Either gcc 3.4.3 is better than the gcc used when the comment |
355 |
/* ------------------------------------------------------------------------- */ |
- |
|
356 |
|
303 |
* above was written, or other parts of the code have changed. We now get |
357 |
/* usbDriverSetup() is similar to usbFunctionSetup(), but it's used for |
304 |
* better results with an inlined function. Test condition: PowerSwitch code. |
358 |
* standard requests instead of class and custom requests. |
305 |
*/ |
359 |
*/ |
306 |
static void usbProcessRx(uchar *data, uchar len) |
360 |
static inline usbMsgLen_t usbDriverSetup(usbRequest_t *rq) |
307 |
{ |
361 |
{ |
308 |
usbRequest_t *rq = (void *)data; |
362 |
usbMsgLen_t len = 0; |
- |
|
363 |
uchar *dataPtr = usbTxBuf + 9; /* there are 2 bytes free space at the end of the buffer */ |
- |
|
364 |
uchar value = rq->wValue.bytes[0]; |
- |
|
365 |
#if USB_CFG_IMPLEMENT_HALT |
- |
|
366 |
uchar index = rq->wIndex.bytes[0]; |
- |
|
367 |
#endif |
- |
|
368 |
|
- |
|
369 |
dataPtr[0] = 0; /* default reply common to USBRQ_GET_STATUS and USBRQ_GET_INTERFACE */ |
- |
|
370 |
SWITCH_START(rq->bRequest) |
- |
|
371 |
SWITCH_CASE(USBRQ_GET_STATUS) /* 0 */ |
- |
|
372 |
uchar recipient = rq->bmRequestType & USBRQ_RCPT_MASK; /* assign arith ops to variables to enforce byte size */ |
- |
|
373 |
if(USB_CFG_IS_SELF_POWERED && recipient == USBRQ_RCPT_DEVICE) |
309 |
uchar replyLen = 0, flags = USB_FLG_USE_DEFAULT_RW; |
374 |
dataPtr[0] = USB_CFG_IS_SELF_POWERED; |
- |
|
375 |
#if USB_CFG_IMPLEMENT_HALT |
- |
|
376 |
if(recipient == USBRQ_RCPT_ENDPOINT && index == 0x81) /* request status for endpoint 1 */ |
- |
|
377 |
dataPtr[0] = usbTxLen1 == USBPID_STALL; |
- |
|
378 |
#endif |
- |
|
379 |
dataPtr[1] = 0; |
- |
|
380 |
len = 2; |
- |
|
381 |
#if USB_CFG_IMPLEMENT_HALT |
- |
|
382 |
SWITCH_CASE2(USBRQ_CLEAR_FEATURE, USBRQ_SET_FEATURE) /* 1, 3 */ |
- |
|
383 |
if(value == 0 && index == 0x81){ /* feature 0 == HALT for endpoint == 1 */ |
- |
|
384 |
usbTxLen1 = rq->bRequest == USBRQ_CLEAR_FEATURE ? USBPID_NAK : USBPID_STALL; |
- |
|
385 |
usbResetDataToggling(); |
- |
|
386 |
} |
- |
|
387 |
#endif |
- |
|
388 |
SWITCH_CASE(USBRQ_SET_ADDRESS) /* 5 */ |
- |
|
389 |
usbNewDeviceAddr = value; |
- |
|
390 |
USB_SET_ADDRESS_HOOK(); |
- |
|
391 |
SWITCH_CASE(USBRQ_GET_DESCRIPTOR) /* 6 */ |
- |
|
392 |
len = usbDriverDescriptor(rq); |
- |
|
393 |
goto skipMsgPtrAssignment; |
- |
|
394 |
SWITCH_CASE(USBRQ_GET_CONFIGURATION) /* 8 */ |
- |
|
395 |
dataPtr = &usbConfiguration; /* send current configuration value */ |
- |
|
396 |
len = 1; |
- |
|
397 |
SWITCH_CASE(USBRQ_SET_CONFIGURATION) /* 9 */ |
- |
|
398 |
usbConfiguration = value; |
- |
|
399 |
usbResetStall(); |
- |
|
400 |
SWITCH_CASE(USBRQ_GET_INTERFACE) /* 10 */ |
- |
|
401 |
len = 1; |
- |
|
402 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE |
- |
|
403 |
SWITCH_CASE(USBRQ_SET_INTERFACE) /* 11 */ |
- |
|
404 |
usbResetDataToggling(); |
- |
|
405 |
usbResetStall(); |
- |
|
406 |
#endif |
- |
|
407 |
SWITCH_DEFAULT /* 7=SET_DESCRIPTOR, 12=SYNC_FRAME */ |
- |
|
408 |
/* Should we add an optional hook here? */ |
- |
|
409 |
SWITCH_END |
- |
|
410 |
usbMsgPtr = (usbMsgPtr_t)dataPtr; |
- |
|
411 |
skipMsgPtrAssignment: |
- |
|
412 |
return len; |
- |
|
413 |
} |
- |
|
414 |
|
- |
|
415 |
/* ------------------------------------------------------------------------- */ |
- |
|
416 |
|
310 |
/* We use if() cascades because the compare is done byte-wise while switch() |
417 |
/* usbProcessRx() is called for every message received by the interrupt |
311 |
* is int-based. The if() cascades are therefore more efficient. |
418 |
* routine. It distinguishes between SETUP and DATA packets and processes |
- |
|
419 |
* them accordingly. |
312 |
*/ |
420 |
*/ |
- |
|
421 |
static inline void usbProcessRx(uchar *data, uchar len) |
- |
|
422 |
{ |
- |
|
423 |
usbRequest_t *rq = (void *)data; |
- |
|
424 |
|
313 |
/* usbRxToken can be: |
425 |
/* usbRxToken can be: |
314 |
* 0x2d 00101101 (USBPID_SETUP for endpoint 0) |
426 |
* 0x2d 00101101 (USBPID_SETUP for setup data) |
315 |
* 0xe1 11100001 (USBPID_OUT for endpoint 0) |
427 |
* 0xe1 11100001 (USBPID_OUT: data phase of setup transfer) |
316 |
* 0xff 11111111 (USBPID_OUT for endpoint 1) |
428 |
* 0...0x0f for OUT on endpoint X |
317 |
*/ |
429 |
*/ |
318 |
DBG2(0x10 + ((usbRxToken >> 1) & 3), data, len); /* SETUP0=12; OUT0=10; OUT1=13 */ |
430 |
DBG2(0x10 + (usbRxToken & 0xf), data, len + 2); /* SETUP=1d, SETUP-DATA=11, OUTx=1x */ |
- |
|
431 |
USB_RX_USER_HOOK(data, len) |
319 |
#if USB_CFG_IMPLEMENT_FN_WRITEOUT |
432 |
#if USB_CFG_IMPLEMENT_FN_WRITEOUT |
320 |
if(usbRxToken == 0xff){ |
433 |
if(usbRxToken < 0x10){ /* OUT to endpoint != 0: endpoint number in usbRxToken */ |
321 |
usbFunctionWriteOut(data, len); |
434 |
usbFunctionWriteOut(data, len); |
322 |
return; /* no reply expected, hence no usbMsgPtr, usbMsgFlags, usbMsgLen set */ |
435 |
return; |
323 |
} |
436 |
} |
324 |
#endif |
437 |
#endif |
325 |
if(usbRxToken == (uchar)USBPID_SETUP){ |
438 |
if(usbRxToken == (uchar)USBPID_SETUP){ |
326 |
usbTxLen = USBPID_NAK; /* abort pending transmit */ |
- |
|
327 |
if(len == 8){ /* Setup size must be always 8 bytes. Ignore otherwise. */ |
439 |
if(len != 8) /* Setup size must be always 8 bytes. Ignore otherwise. */ |
328 |
uchar type = rq->bmRequestType & USBRQ_TYPE_MASK; |
- |
|
329 |
if(type == USBRQ_TYPE_STANDARD){ |
- |
|
330 |
#define SET_REPLY_LEN(len) replyLen = (len); usbMsgPtr = replyData |
- |
|
331 |
/* This macro ensures that replyLen and usbMsgPtr are always set in the same way. |
- |
|
332 |
* That allows optimization of common code in if() branches */ |
- |
|
333 |
uchar *replyData = usbTxBuf + 9; /* there is 3 bytes free space at the end of the buffer */ |
- |
|
334 |
replyData[0] = 0; /* common to USBRQ_GET_STATUS and USBRQ_GET_INTERFACE */ |
- |
|
335 |
if(rq->bRequest == USBRQ_GET_STATUS){ /* 0 */ |
- |
|
336 |
uchar __attribute__((__unused__)) recipient = rq->bmRequestType & USBRQ_RCPT_MASK; /* assign arith ops to variables to enforce byte size */ |
- |
|
337 |
#if USB_CFG_IS_SELF_POWERED |
- |
|
338 |
if(recipient == USBRQ_RCPT_DEVICE) |
- |
|
339 |
replyData[0] = USB_CFG_IS_SELF_POWERED; |
- |
|
340 |
#endif |
- |
|
341 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT && USB_CFG_IMPLEMENT_HALT |
- |
|
342 |
if(recipient == USBRQ_RCPT_ENDPOINT && rq->wIndex.bytes[0] == 0x81) /* request status for endpoint 1 */ |
- |
|
343 |
replyData[0] = usbTxLen1 == USBPID_STALL; |
- |
|
344 |
#endif |
- |
|
345 |
replyData[1] = 0; |
440 |
return; |
346 |
SET_REPLY_LEN(2); |
441 |
usbMsgLen_t replyLen; |
347 |
}else if(rq->bRequest == USBRQ_SET_ADDRESS){ /* 5 */ |
- |
|
348 |
usbNewDeviceAddr = rq->wValue.bytes[0]; |
- |
|
349 |
}else if(rq->bRequest == USBRQ_GET_DESCRIPTOR){ /* 6 */ |
- |
|
350 |
flags = USB_FLG_MSGPTR_IS_ROM | USB_FLG_USE_DEFAULT_RW; |
- |
|
351 |
if(rq->wValue.bytes[1] == USBDESCR_DEVICE){ /* 1 */ |
- |
|
352 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_DEVICE, usbDescriptorDevice) |
- |
|
353 |
}else if(rq->wValue.bytes[1] == USBDESCR_CONFIG){ /* 2 */ |
- |
|
354 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_CONFIGURATION, usbDescriptorConfiguration) |
- |
|
355 |
}else if(rq->wValue.bytes[1] == USBDESCR_STRING){ /* 3 */ |
- |
|
356 |
#if USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC |
- |
|
357 |
if(USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_RAM) |
- |
|
358 |
flags &= ~USB_FLG_MSGPTR_IS_ROM; |
- |
|
359 |
replyLen = usbFunctionDescriptor(rq); |
- |
|
360 |
#else /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ |
- |
|
361 |
if(rq->wValue.bytes[0] == 0){ /* descriptor index */ |
442 |
usbTxBuf[0] = USBPID_DATA0; /* initialize data toggling */ |
362 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_0, usbDescriptorString0) |
- |
|
363 |
}else if(rq->wValue.bytes[0] == 1){ |
- |
|
364 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_VENDOR, usbDescriptorStringVendor) |
- |
|
365 |
}else if(rq->wValue.bytes[0] == 2){ |
- |
|
366 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_DEVICE, usbDescriptorStringDevice) |
- |
|
367 |
}else if(rq->wValue.bytes[0] == 3){ |
- |
|
368 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER, usbDescriptorStringSerialNumber) |
- |
|
369 |
}else if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ |
- |
|
370 |
replyLen = usbFunctionDescriptor(rq); |
443 |
usbTxLen = USBPID_NAK; /* abort pending transmit */ |
371 |
} |
444 |
usbMsgFlags = 0; |
372 |
#endif /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ |
- |
|
373 |
}else if(rq->wValue.bytes[1] == USBDESCR_HID){ /* 0x21 */ |
- |
|
374 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID, usbDescriptorConfiguration + 18) |
- |
|
375 |
}else if(rq->wValue.bytes[1] == USBDESCR_HID_REPORT){ /* 0x22 */ |
445 |
uchar type = rq->bmRequestType & USBRQ_TYPE_MASK; |
376 |
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID_REPORT, usbDescriptorHidReport) |
446 |
if(type != USBRQ_TYPE_STANDARD){ /* standard requests are handled by driver */ |
377 |
}else if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ |
- |
|
378 |
replyLen = usbFunctionDescriptor(rq); |
447 |
replyLen = usbFunctionSetup(data); |
379 |
} |
448 |
}else{ |
380 |
}else if(rq->bRequest == USBRQ_GET_CONFIGURATION){ /* 8 */ |
- |
|
381 |
replyData = &usbConfiguration; /* send current configuration value */ |
- |
|
382 |
SET_REPLY_LEN(1); |
- |
|
383 |
}else if(rq->bRequest == USBRQ_SET_CONFIGURATION){ /* 9 */ |
- |
|
384 |
usbConfiguration = rq->wValue.bytes[0]; |
- |
|
385 |
#if USB_CFG_IMPLEMENT_HALT |
- |
|
386 |
usbTxLen1 = USBPID_NAK; |
- |
|
387 |
#endif |
- |
|
388 |
}else if(rq->bRequest == USBRQ_GET_INTERFACE){ /* 10 */ |
- |
|
389 |
SET_REPLY_LEN(1); |
449 |
replyLen = usbDriverSetup(rq); |
390 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT |
- |
|
391 |
}else if(rq->bRequest == USBRQ_SET_INTERFACE){ /* 11 */ |
- |
|
392 |
USB_SET_DATATOKEN1(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
- |
|
393 |
# if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
- |
|
394 |
USB_SET_DATATOKEN3(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
- |
|
395 |
# endif |
450 |
} |
396 |
# if USB_CFG_IMPLEMENT_HALT |
451 |
#if USB_CFG_IMPLEMENT_FN_READ || USB_CFG_IMPLEMENT_FN_WRITE |
397 |
usbTxLen1 = USBPID_NAK; |
- |
|
398 |
}else if(rq->bRequest == USBRQ_CLEAR_FEATURE || rq->bRequest == USBRQ_SET_FEATURE){ /* 1|3 */ |
452 |
if(replyLen == USB_NO_MSG){ /* use user-supplied read/write function */ |
399 |
if(rq->wValue.bytes[0] == 0 && rq->wIndex.bytes[0] == 0x81){ /* feature 0 == HALT for endpoint == 1 */ |
453 |
/* do some conditioning on replyLen, but on IN transfers only */ |
400 |
usbTxLen1 = rq->bRequest == USBRQ_CLEAR_FEATURE ? USBPID_NAK : USBPID_STALL; |
454 |
if((rq->bmRequestType & USBRQ_DIR_MASK) != USBRQ_DIR_HOST_TO_DEVICE){ |
401 |
USB_SET_DATATOKEN1(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
- |
|
402 |
# if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
- |
|
403 |
USB_SET_DATATOKEN3(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
455 |
if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */ |
404 |
# endif |
- |
|
405 |
} |
456 |
replyLen = rq->wLength.bytes[0]; |
406 |
# endif |
- |
|
407 |
#endif |
- |
|
408 |
}else{ |
457 |
}else{ |
409 |
/* the following requests can be ignored, send default reply */ |
- |
|
410 |
/* 1: CLEAR_FEATURE, 3: SET_FEATURE, 7: SET_DESCRIPTOR */ |
- |
|
411 |
/* 12: SYNCH_FRAME */ |
458 |
replyLen = rq->wLength.word; |
412 |
} |
459 |
} |
413 |
#undef SET_REPLY_LEN |
- |
|
414 |
}else{ /* not a standard request -- must be vendor or class request */ |
- |
|
415 |
replyLen = usbFunctionSetup(data); |
- |
|
416 |
} |
460 |
} |
417 |
#if USB_CFG_IMPLEMENT_FN_READ || USB_CFG_IMPLEMENT_FN_WRITE |
461 |
usbMsgFlags = USB_FLG_USE_USER_RW; |
418 |
if(replyLen == 0xff){ /* use user-supplied read/write function */ |
- |
|
419 |
if((rq->bmRequestType & USBRQ_DIR_MASK) == USBRQ_DIR_DEVICE_TO_HOST){ |
- |
|
420 |
replyLen = rq->wLength.bytes[0]; /* IN transfers only */ |
- |
|
421 |
} |
- |
|
422 |
flags &= ~USB_FLG_USE_DEFAULT_RW; /* we have no valid msg, use user supplied read/write functions */ |
- |
|
423 |
}else /* The 'else' prevents that we limit a replyLen of 0xff to the maximum transfer len. */ |
462 |
}else /* The 'else' prevents that we limit a replyLen of USB_NO_MSG to the maximum transfer len. */ |
424 |
#endif |
463 |
#endif |
- |
|
464 |
if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */ |
425 |
if(!rq->wLength.bytes[1] && replyLen > rq->wLength.bytes[0]) /* limit length to max */ |
465 |
if(!rq->wLength.bytes[1] && replyLen > rq->wLength.bytes[0]) /* limit length to max */ |
426 |
replyLen = rq->wLength.bytes[0]; |
466 |
replyLen = rq->wLength.bytes[0]; |
- |
|
467 |
}else{ |
- |
|
468 |
if(replyLen > rq->wLength.word) /* limit length to max */ |
- |
|
469 |
replyLen = rq->wLength.word; |
427 |
} |
470 |
} |
428 |
/* make sure that data packets which are sent as ACK to an OUT transfer are always zero sized */ |
471 |
usbMsgLen = replyLen; |
429 |
}else{ /* DATA packet from out request */ |
472 |
}else{ /* usbRxToken must be USBPID_OUT, which means data phase of setup (control-out) */ |
430 |
#if USB_CFG_IMPLEMENT_FN_WRITE |
473 |
#if USB_CFG_IMPLEMENT_FN_WRITE |
431 |
if(!(usbMsgFlags & USB_FLG_USE_DEFAULT_RW)){ |
474 |
if(usbMsgFlags & USB_FLG_USE_USER_RW){ |
432 |
uchar rval = usbFunctionWrite(data, len); |
475 |
uchar rval = usbFunctionWrite(data, len); |
433 |
replyLen = 0xff; |
- |
|
434 |
if(rval == 0xff){ /* an error occurred */ |
476 |
if(rval == 0xff){ /* an error occurred */ |
435 |
usbMsgLen = 0xff; /* cancel potentially pending data packet for ACK */ |
- |
|
436 |
usbTxLen = USBPID_STALL; |
477 |
usbTxLen = USBPID_STALL; |
437 |
}else if(rval != 0){ /* This was the final package */ |
478 |
}else if(rval != 0){ /* This was the final package */ |
438 |
replyLen = 0; /* answer with a zero-sized data packet */ |
479 |
usbMsgLen = 0; /* answer with a zero-sized data packet */ |
439 |
} |
480 |
} |
440 |
flags = 0; /* start with a DATA1 package, stay with user supplied write() function */ |
- |
|
441 |
} |
481 |
} |
442 |
#endif |
482 |
#endif |
443 |
} |
483 |
} |
444 |
usbMsgFlags = flags; |
- |
|
445 |
usbMsgLen = replyLen; |
- |
|
446 |
} |
484 |
} |
447 |
|
485 |
|
448 |
/* ------------------------------------------------------------------------- */ |
486 |
/* ------------------------------------------------------------------------- */ |
449 |
|
487 |
|
- |
|
488 |
/* This function is similar to usbFunctionRead(), but it's also called for |
- |
|
489 |
* data handled automatically by the driver (e.g. descriptor reads). |
- |
|
490 |
*/ |
450 |
static void usbBuildTxBlock(void) |
491 |
static uchar usbDeviceRead(uchar *data, uchar len) |
451 |
{ |
492 |
{ |
- |
|
493 |
if(len > 0){ /* don't bother app with 0 sized reads */ |
- |
|
494 |
#if USB_CFG_IMPLEMENT_FN_READ |
- |
|
495 |
if(usbMsgFlags & USB_FLG_USE_USER_RW){ |
452 |
uchar wantLen, len, txLen, token; |
496 |
len = usbFunctionRead(data, len); |
- |
|
497 |
}else |
- |
|
498 |
#endif |
- |
|
499 |
{ |
- |
|
500 |
uchar i = len; |
- |
|
501 |
usbMsgPtr_t r = usbMsgPtr; |
- |
|
502 |
if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */ |
- |
|
503 |
do{ |
- |
|
504 |
uchar c = USB_READ_FLASH(r); /* assign to char size variable to enforce byte ops */ |
- |
|
505 |
*data++ = c; |
- |
|
506 |
r++; |
- |
|
507 |
}while(--i); |
- |
|
508 |
}else{ /* RAM data */ |
- |
|
509 |
do{ |
- |
|
510 |
*data++ = *((uchar *)r); |
- |
|
511 |
r++; |
- |
|
512 |
}while(--i); |
- |
|
513 |
} |
- |
|
514 |
usbMsgPtr = r; |
- |
|
515 |
} |
- |
|
516 |
} |
- |
|
517 |
return len; |
- |
|
518 |
} |
- |
|
519 |
|
- |
|
520 |
/* ------------------------------------------------------------------------- */ |
- |
|
521 |
|
- |
|
522 |
/* usbBuildTxBlock() is called when we have data to transmit and the |
- |
|
523 |
* interrupt routine's transmit buffer is empty. |
- |
|
524 |
*/ |
- |
|
525 |
static inline void usbBuildTxBlock(void) |
- |
|
526 |
{ |
- |
|
527 |
usbMsgLen_t wantLen; |
- |
|
528 |
uchar len; |
453 |
|
529 |
|
454 |
wantLen = usbMsgLen; |
530 |
wantLen = usbMsgLen; |
455 |
if(wantLen > 8) |
531 |
if(wantLen > 8) |
456 |
wantLen = 8; |
532 |
wantLen = 8; |
457 |
usbMsgLen -= wantLen; |
533 |
usbMsgLen -= wantLen; |
458 |
token = USBPID_DATA1; |
- |
|
459 |
if(usbMsgFlags & USB_FLG_TX_PACKET) |
- |
|
460 |
token = USBPID_DATA0; |
534 |
usbTxBuf[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* DATA toggling */ |
461 |
usbMsgFlags++; |
- |
|
462 |
len = usbRead(usbTxBuf + 1, wantLen); |
535 |
len = usbDeviceRead(usbTxBuf + 1, wantLen); |
463 |
if(len <= 8){ /* valid data packet */ |
536 |
if(len <= 8){ /* valid data packet */ |
464 |
usbCrc16Append(&usbTxBuf[1], len); |
537 |
usbCrc16Append(&usbTxBuf[1], len); |
465 |
txLen = len + 4; /* length including sync byte */ |
538 |
len += 4; /* length including sync byte */ |
466 |
if(len < 8) /* a partial package identifies end of message */ |
539 |
if(len < 12) /* a partial package identifies end of message */ |
467 |
usbMsgLen = 0xff; |
540 |
usbMsgLen = USB_NO_MSG; |
468 |
}else{ |
541 |
}else{ |
469 |
txLen = USBPID_STALL; /* stall the endpoint */ |
542 |
len = USBPID_STALL; /* stall the endpoint */ |
470 |
usbMsgLen = 0xff; |
543 |
usbMsgLen = USB_NO_MSG; |
471 |
} |
544 |
} |
472 |
usbTxBuf[0] = token; |
- |
|
473 |
usbTxLen = txLen; |
545 |
usbTxLen = len; |
474 |
DBG2(0x20, usbTxBuf, txLen-1); |
546 |
DBG2(0x20, usbTxBuf, len-1); |
475 |
} |
547 |
} |
476 |
|
548 |
|
- |
|
549 |
/* ------------------------------------------------------------------------- */ |
- |
|
550 |
|
477 |
static inline uchar isNotSE0(void) |
551 |
static inline void usbHandleResetHook(uchar notResetState) |
478 |
{ |
552 |
{ |
- |
|
553 |
#ifdef USB_RESET_HOOK |
479 |
uchar rval; |
554 |
static uchar wasReset; |
480 |
/* We want to do |
555 |
uchar isReset = !notResetState; |
- |
|
556 |
|
481 |
* return (USBIN & USBMASK); |
557 |
if(wasReset != isReset){ |
482 |
* here, but the compiler does int-expansion acrobatics. |
558 |
USB_RESET_HOOK(isReset); |
483 |
* We can avoid this by assigning to a char-sized variable. |
559 |
wasReset = isReset; |
484 |
*/ |
560 |
} |
- |
|
561 |
#else |
485 |
rval = USBIN & USBMASK; |
562 |
notResetState = notResetState; // avoid compiler warning |
486 |
return rval; |
563 |
#endif |
487 |
} |
564 |
} |
488 |
|
565 |
|
489 |
/* ------------------------------------------------------------------------- */ |
566 |
/* ------------------------------------------------------------------------- */ |
490 |
|
567 |
|
491 |
void usbPoll(void) |
568 |
USB_PUBLIC void usbPoll(void) |
492 |
{ |
569 |
{ |
493 |
uchar len, i; |
570 |
schar len; |
- |
|
571 |
uchar i; |
494 |
|
572 |
|
495 |
if((len = usbRxLen) > 0){ |
573 |
len = usbRxLen - 3; |
- |
|
574 |
if(len >= 0){ |
496 |
/* We could check CRC16 here -- but ACK has already been sent anyway. If you |
575 |
/* We could check CRC16 here -- but ACK has already been sent anyway. If you |
497 |
* need data integrity checks with this driver, check the CRC in your app |
576 |
* need data integrity checks with this driver, check the CRC in your app |
498 |
* code and report errors back to the host. Since the ACK was already sent, |
577 |
* code and report errors back to the host. Since the ACK was already sent, |
499 |
* retries must be handled on application level. |
578 |
* retries must be handled on application level. |
500 |
* unsigned crc = usbCrc16(buffer + 1, usbRxLen - 3); |
579 |
* unsigned crc = usbCrc16(buffer + 1, usbRxLen - 3); |
501 |
*/ |
580 |
*/ |
502 |
usbProcessRx(usbRxBuf + USB_BUFSIZE + 1 - usbInputBufOffset, len - 3); |
581 |
usbProcessRx(usbRxBuf + USB_BUFSIZE + 1 - usbInputBufOffset, len); |
503 |
#if USB_CFG_HAVE_FLOWCONTROL |
582 |
#if USB_CFG_HAVE_FLOWCONTROL |
504 |
if(usbRxLen > 0) /* only mark as available if not inactivated */ |
583 |
if(usbRxLen > 0) /* only mark as available if not inactivated */ |
505 |
usbRxLen = 0; |
584 |
usbRxLen = 0; |
506 |
#else |
585 |
#else |
507 |
usbRxLen = 0; /* mark rx buffer as available */ |
586 |
usbRxLen = 0; /* mark rx buffer as available */ |
508 |
#endif |
587 |
#endif |
509 |
} |
588 |
} |
510 |
if(usbTxLen & 0x10){ /* transmit system idle */ |
589 |
if(usbTxLen & 0x10){ /* transmit system idle */ |
511 |
if(usbMsgLen != 0xff){ /* transmit data pending? */ |
590 |
if(usbMsgLen != USB_NO_MSG){ /* transmit data pending? */ |
512 |
usbBuildTxBlock(); |
591 |
usbBuildTxBlock(); |
513 |
} |
592 |
} |
514 |
} |
593 |
} |
515 |
for(i = 10; i > 0; i--){ |
594 |
for(i = 20; i > 0; i--){ |
- |
|
595 |
uchar usbLineStatus = USBIN & USBMASK; |
516 |
if(isNotSE0()) |
596 |
if(usbLineStatus != 0) /* SE0 has ended */ |
517 |
break; |
597 |
goto isNotReset; |
518 |
} |
598 |
} |
519 |
if(i == 0){ /* RESET condition, called multiple times during reset */ |
599 |
/* RESET condition, called multiple times during reset */ |
520 |
usbNewDeviceAddr = 0; |
600 |
usbNewDeviceAddr = 0; |
521 |
usbDeviceAddr = 0; |
601 |
usbDeviceAddr = 0; |
522 |
#if USB_CFG_IMPLEMENT_HALT |
- |
|
523 |
usbTxLen1 = USBPID_NAK; |
602 |
usbResetStall(); |
524 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
- |
|
525 |
usbTxLen3 = USBPID_NAK; |
603 |
DBG1(0xff, 0, 0); |
526 |
#endif |
- |
|
527 |
#endif |
604 |
isNotReset: |
528 |
DBG1(0xff, 0, 0); |
605 |
usbHandleResetHook(i); |
529 |
} |
- |
|
530 |
} |
606 |
} |
531 |
|
607 |
|
532 |
/* ------------------------------------------------------------------------- */ |
608 |
/* ------------------------------------------------------------------------- */ |
533 |
|
609 |
|
534 |
void usbInit(void) |
610 |
USB_PUBLIC void usbInit(void) |
535 |
{ |
611 |
{ |
536 |
#if USB_INTR_CFG_SET != 0 |
612 |
#if USB_INTR_CFG_SET != 0 |
537 |
USB_INTR_CFG |= USB_INTR_CFG_SET; |
613 |
USB_INTR_CFG |= USB_INTR_CFG_SET; |
538 |
#endif |
614 |
#endif |
539 |
#if USB_INTR_CFG_CLR != 0 |
615 |
#if USB_INTR_CFG_CLR != 0 |
540 |
USB_INTR_CFG &= ~(USB_INTR_CFG_CLR); |
616 |
USB_INTR_CFG &= ~(USB_INTR_CFG_CLR); |
541 |
#endif |
617 |
#endif |
542 |
USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT); |
618 |
USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT); |
- |
|
619 |
usbResetDataToggling(); |
543 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT |
620 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE |
544 |
USB_SET_DATATOKEN1(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
621 |
usbTxLen1 = USBPID_NAK; |
545 |
# if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
622 |
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 |
546 |
USB_SET_DATATOKEN3(USBPID_DATA0); /* reset data toggling for interrupt endpoint */ |
623 |
usbTxLen3 = USBPID_NAK; |
547 |
# endif |
624 |
#endif |
548 |
#endif |
625 |
#endif |
549 |
} |
626 |
} |
550 |
|
627 |
|
551 |
/* ------------------------------------------------------------------------- */ |
628 |
/* ------------------------------------------------------------------------- */ |