git.sur5r.net Git - freertos/blob - Source/portable/Rowley/MSP430F449/portmacro.h

   1 /*\r
   2         FreeRTOS.org V4.7.2 - 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 PORTMACRO_H\r
  44 #define PORTMACRO_H\r
  45 \r
  46 /*-----------------------------------------------------------\r
  47  * Port specific definitions.  \r
  48  *\r
  49  * The settings in this file configure FreeRTOS correctly for the\r
  50  * given hardware and compiler.\r
  51  *\r
  52  * These settings should not be altered.\r
  53  *-----------------------------------------------------------\r
  54  */\r
  55 \r
  56 /* Type definitions. */\r
  57 #define portCHAR                char\r
  58 #define portFLOAT               float\r
  59 #define portDOUBLE              double\r
  60 #define portLONG                long\r
  61 #define portSHORT               int\r
  62 #define portSTACK_TYPE  unsigned portSHORT\r
  63 #define portBASE_TYPE   portSHORT\r
  64 \r
  65 #if( configUSE_16_BIT_TICKS == 1 )\r
  66         typedef unsigned portSHORT portTickType;\r
  67         #define portMAX_DELAY ( portTickType ) 0xffff\r
  68 #else\r
  69         typedef unsigned portLONG portTickType;\r
  70         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  71 #endif\r
  72 \r
  73 /*-----------------------------------------------------------*/ \r
  74 \r
  75 /* Interrupt control macros. */\r
  76 #define portDISABLE_INTERRUPTS()        _DINT();\r
  77 #define portENABLE_INTERRUPTS()         _EINT();\r
  78 /*-----------------------------------------------------------*/\r
  79 \r
  80 /* Critical section control macros. */\r
  81 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
  82 \r
  83 #define portENTER_CRITICAL()                                                                                                    \\r
  84 {                                                                                                                                                               \\r
  85 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
  86                                                                                                                                                                 \\r
  87         portDISABLE_INTERRUPTS();                                                                                                       \\r
  88                                                                                                                                                                 \\r
  89         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
  90         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
  91         /* times portENTER_CRITICAL() has been called. */                                                       \\r
  92         usCriticalNesting++;                                                                                                            \\r
  93 }\r
  94 \r
  95 #define portEXIT_CRITICAL()                                                                                                             \\r
  96 {                                                                                                                                                               \\r
  97 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
  98                                                                                                                                                                 \\r
  99         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 100         {                                                                                                                                                       \\r
 101                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 102                 usCriticalNesting--;                                                                                                    \\r
 103                                                                                                                                                                 \\r
 104                 /* If the nesting level has reached zero then interrupts should be */   \\r
 105                 /* re-enabled. */                                                                                                               \\r
 106                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 107                 {                                                                                                                                               \\r
 108                         portENABLE_INTERRUPTS();                                                                                        \\r
 109                 }                                                                                                                                               \\r
 110         }                                                                                                                                                       \\r
 111 }\r
 112 /*-----------------------------------------------------------*/\r
 113 \r
 114 /* Task utilities. */\r
 115 \r
 116 /*\r
 117  * Manual context switch called by portYIELD or taskYIELD.  \r
 118  */\r
 119 extern void vPortYield( void ); \r
 120 #define portYIELD() vPortYield()\r
 121 /*-----------------------------------------------------------*/\r
 122 \r
 123 /* Hardware specifics. */\r
 124 #define portBYTE_ALIGNMENT                      2\r
 125 #define portSTACK_GROWTH                        ( -1 )\r
 126 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )  \r
 127 #define portNOP()       \r
 128 /*-----------------------------------------------------------*/\r
 129 \r
 130 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 131 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 132 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 133 \r
 134 /* Compiler specifics. */\r
 135 #define inline\r
 136 \r
 137 /* Just used by the demo application to indicate which form of interrupt \r
 138 service routine should be used.  See the online port documentation for more\r
 139 information. */\r
 140 #define MSP_ROWLEY_RB_PORT\r
 141 \r
 142 #endif /* PORTMACRO_H */\r
 143 \r