git.sur5r.net Git - freertos/blob - Demo/ARM7_AT91SAM7X256_Eclipse/RTOSDemo/USB/USBSample.h

   1 /*\r
   2     FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.\r
   3 \r
   4     This file is part of the FreeRTOS distribution.\r
   5 \r
   6     FreeRTOS is free software; you can redistribute it and/or modify it    under\r
   7     the terms of the GNU General Public License (version 2) as published by the\r
   8     Free Software Foundation and modified by the FreeRTOS exception.\r
   9     **NOTE** The exception to the GPL is included to allow you to distribute a\r
  10     combined work that includes FreeRTOS without being obliged to provide the\r
  11     source code for proprietary components outside of the FreeRTOS kernel.\r
  12     Alternative commercial license and support terms are also available upon\r
  13     request.  See the licensing section of http://www.FreeRTOS.org for full\r
  14     license details.\r
  15 \r
  16     FreeRTOS is distributed in the hope that it will be useful,    but WITHOUT\r
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  19     more details.\r
  20 \r
  21     You should have received a copy of the GNU General Public License along\r
  22     with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59\r
  23     Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  24 \r
  25 \r
  26     ***************************************************************************\r
  27     *                                                                         *\r
  28     * The FreeRTOS eBook and reference manual are available to purchase for a *\r
  29     * small fee. Help yourself get started quickly while also helping the     *\r
  30     * FreeRTOS project! See http://www.FreeRTOS.org/Documentation for details *\r
  31     *                                                                         *\r
  32     ***************************************************************************\r
  33 \r
  34     1 tab == 4 spaces!\r
  35 \r
  36     Please ensure to read the configuration and relevant port sections of the\r
  37     online documentation.\r
  38 \r
  39     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  40     contact details.\r
  41 \r
  42     http://www.SafeRTOS.com - A version that is certified for use in safety\r
  43     critical systems.\r
  44 \r
  45     http://www.OpenRTOS.com - Commercial support, development, porting,\r
  46     licensing and training services.\r
  47 */\r
  48 \r
  49 #ifndef USB_DEMO_H\r
  50 #define USB_DEMO_H\r
  51 \r
  52 \r
  53 /*-----------------------------------------------------------*/\r
  54 \r
  55 #define usbQUEUE_LENGTH                                         ( 0x3 ) /* Must have all bits set! */\r
  56 #define usbEND_POINT_0                                          ( 0 )\r
  57 #define usbEND_POINT_1                                          ( 1 )\r
  58 #define usbRX_COUNT_MASK                                        ( ( unsigned long ) 0x7ff )\r
  59 #define AT91C_UDP_STALLSENT                                     AT91C_UDP_ISOERROR\r
  60 \r
  61 /* Structure used to take a snapshot of the USB status from within the ISR. */\r
  62 typedef struct X_ISR_STATUS\r
  63 {\r
  64         unsigned long ulISR;\r
  65         unsigned long ulCSR0;\r
  66         unsigned char ucFifoData[ 8 ];\r
  67 } xISRStatus;\r
  68 \r
  69 /* Macros to manipulate the control and status registers.  These registers \r
  70 cannot be accessed using a direct read modify write operation outside of the \r
  71 ISR as some bits are left unchanged by writing with a 0, and some are left \r
  72 unchanged by writing with a 1. */\r
  73 \r
  74 #define usbCSR_SET_BIT( pulValueNow, ulBit )                                                                                    \\r
  75 {                                                                                                                                                                               \\r
  76         /* Set TXCOMP, RX_DATA_BK0, RXSETUP, */                                                                                         \\r
  77         /* STALLSENT and RX_DATA_BK1 to 1 so the */                                                                                     \\r
  78         /* write has no effect. */                                                                                                                      \\r
  79         ( * ( ( unsigned long * ) pulValueNow ) ) |= ( unsigned long ) 0x4f;            \\r
  80                                                                                                                                                                                 \\r
  81         /* Clear the FORCE_STALL and TXPKTRDY bits */                                                                           \\r
  82         /* so the write has no effect. */                                                                                                       \\r
  83         ( * ( ( unsigned long * ) pulValueNow ) ) &= ( unsigned long ) 0xffffffcf;      \\r
  84                                                                                                                                                                                 \\r
  85         /* Set whichever bit we want set. */                                                                                            \\r
  86         ( * ( ( unsigned long * ) pulValueNow ) ) |= ( ulBit );                                                 \\r
  87 }\r
  88 \r
  89 /*\r
  90  * Creates the queue used to communicate between the USB task and the USB ISR, then\r
  91  * createst the task that manages the USB peripheral.\r
  92  */\r
  93 void vStartUSBTask( unsigned portBASE_TYPE uxPriority );\r
  94 \r
  95 #endif\r
  96 \r