begriffs open source - freertos/blob - 20080217/Demo/ARM7_AT91SAM7X256_Eclipse/RTOSDemo/USB/USBSample.h

   1 /*\r
   2         FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS.org distribution.\r
   5 \r
   6         FreeRTOS.org is free software; you can redistribute it and/or modify\r
   7         it under the terms of the GNU General Public License as published by\r
   8         the Free Software Foundation; either version 2 of the License, or\r
   9         (at your option) any later version.\r
  10 \r
  11         FreeRTOS.org is distributed in the hope that it will be useful,\r
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14         GNU General Public License for more details.\r
  15 \r
  16         You should have received a copy of the GNU General Public License\r
  17         along with FreeRTOS.org; if not, write to the Free Software\r
  18         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
  19 \r
  20         A special exception to the GPL can be applied should you wish to distribute\r
  21         a combined work that includes FreeRTOS.org, without being obliged to provide\r
  22         the source code for any proprietary components.  See the licensing section \r
  23         of http://www.FreeRTOS.org for full details of how and when the exception\r
  24         can be applied.\r
  25 \r
  26         ***************************************************************************\r
  27 \r
  28         Please ensure to read the configuration and relevant port sections of the \r
  29         online documentation.\r
  30 \r
  31         +++ http://www.FreeRTOS.org +++\r
  32         Documentation, latest information, license and contact details.  \r
  33 \r
  34         +++ http://www.SafeRTOS.com +++\r
  35         A version that is certified for use in safety critical systems.\r
  36 \r
  37         +++ http://www.OpenRTOS.com +++\r
  38         Commercial support, development, porting, licensing and training services.\r
  39 \r
  40         ***************************************************************************\r
  41 */\r
  42 \r
  43 #ifndef USB_DEMO_H\r
  44 #define USB_DEMO_H\r
  45 \r
  46 \r
  47 /*-----------------------------------------------------------*/\r
  48 \r
  49 #define usbQUEUE_LENGTH                                         ( 0x3 ) /* Must have all bits set! */\r
  50 #define usbEND_POINT_0                                          ( 0 )\r
  51 #define usbEND_POINT_1                                          ( 1 )\r
  52 #define usbRX_COUNT_MASK                                        ( ( unsigned portLONG ) 0x7ff )\r
  53 #define AT91C_UDP_STALLSENT                                     AT91C_UDP_ISOERROR\r
  54 \r
  55 /* Structure used to take a snapshot of the USB status from within the ISR. */\r
  56 typedef struct X_ISR_STATUS\r
  57 {\r
  58         unsigned portLONG ulISR;\r
  59         unsigned portLONG ulCSR0;\r
  60         unsigned portCHAR ucFifoData[ 8 ];\r
  61 } xISRStatus;\r
  62 \r
  63 /* Macros to manipulate the control and status registers.  These registers \r
  64 cannot be accessed using a direct read modify write operation outside of the \r
  65 ISR as some bits are left unchanged by writing with a 0, and some are left \r
  66 unchanged by writing with a 1. */\r
  67 \r
  68 #define usbCSR_SET_BIT( pulValueNow, ulBit )                                                                                    \\r
  69 {                                                                                                                                                                               \\r
  70         /* Set TXCOMP, RX_DATA_BK0, RXSETUP, */                                                                                         \\r
  71         /* STALLSENT and RX_DATA_BK1 to 1 so the */                                                                                     \\r
  72         /* write has no effect. */                                                                                                                      \\r
  73         ( * ( ( unsigned portLONG * ) pulValueNow ) ) |= ( unsigned portLONG ) 0x4f;            \\r
  74                                                                                                                                                                                 \\r
  75         /* Clear the FORCE_STALL and TXPKTRDY bits */                                                                           \\r
  76         /* so the write has no effect. */                                                                                                       \\r
  77         ( * ( ( unsigned portLONG * ) pulValueNow ) ) &= ( unsigned portLONG ) 0xffffffcf;      \\r
  78                                                                                                                                                                                 \\r
  79         /* Set whichever bit we want set. */                                                                                            \\r
  80         ( * ( ( unsigned portLONG * ) pulValueNow ) ) |= ( ulBit );                                                     \\r
  81 }\r
  82 \r
  83 /*\r
  84  * Creates the queue used to communicate between the USB task and the USB ISR, then\r
  85  * createst the task that manages the USB peripheral.\r
  86  */\r
  87 void vStartUSBTask( unsigned portBASE_TYPE uxPriority );\r
  88 \r
  89 #endif\r
  90 \r