git.sur5r.net Git - freertos/blob - Source/portable/Rowley/MSP430F449/Port2/portmacro.h

   1 /*\r
   2         FreeRTOS.org V5.0.0 - 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     *                                                                         *\r
  29     * SAVE TIME AND MONEY!  We can port FreeRTOS.org to your own hardware,    *\r
  30     * and even write all or part of your application on your behalf.          *\r
  31     * See http://www.OpenRTOS.com for details of the services we provide to   *\r
  32     * expedite your project.                                                  *\r
  33     *                                                                         *\r
  34     ***************************************************************************\r
  35     ***************************************************************************\r
  36 \r
  37         Please ensure to read the configuration and relevant port sections of the\r
  38         online documentation.\r
  39 \r
  40         http://www.FreeRTOS.org - Documentation, latest information, license and \r
  41         contact details.\r
  42 \r
  43         http://www.SafeRTOS.com - A version that is certified for use in safety \r
  44         critical systems.\r
  45 \r
  46         http://www.OpenRTOS.com - Commercial support, development, porting, \r
  47         licensing and training services.\r
  48 */\r
  49 \r
  50 #ifndef PORTMACRO_H\r
  51 #define PORTMACRO_H\r
  52 \r
  53 /*-----------------------------------------------------------\r
  54  * Port specific definitions.  \r
  55  *\r
  56  * The settings in this file configure FreeRTOS correctly for the\r
  57  * given hardware and compiler.\r
  58  *\r
  59  * These settings should not be altered.\r
  60  *-----------------------------------------------------------\r
  61  */\r
  62 \r
  63 /* Type definitions. */\r
  64 #define portCHAR                char\r
  65 #define portFLOAT               float\r
  66 #define portDOUBLE              double\r
  67 #define portLONG                long\r
  68 #define portSHORT               int\r
  69 #define portSTACK_TYPE  unsigned portSHORT\r
  70 #define portBASE_TYPE   portSHORT\r
  71 \r
  72 #if( configUSE_16_BIT_TICKS == 1 )\r
  73         typedef unsigned portSHORT portTickType;\r
  74         #define portMAX_DELAY ( portTickType ) 0xffff\r
  75 #else\r
  76         typedef unsigned portLONG portTickType;\r
  77         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  78 #endif\r
  79 /*-----------------------------------------------------------*/ \r
  80 \r
  81 /* Interrupt control macros. */\r
  82 #define portDISABLE_INTERRUPTS()        _DINT();\r
  83 #define portENABLE_INTERRUPTS()         _EINT();\r
  84 /*-----------------------------------------------------------*/\r
  85 \r
  86 /* Critical section control macros. */\r
  87 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
  88 \r
  89 #define portENTER_CRITICAL()                                                                                                    \\r
  90 {                                                                                                                                                               \\r
  91 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
  92                                                                                                                                                                 \\r
  93         portDISABLE_INTERRUPTS();                                                                                                       \\r
  94                                                                                                                                                                 \\r
  95         /* Now interrupts are disabled ulCriticalNesting can be accessed */                     \\r
  96         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
  97         /* times portENTER_CRITICAL() has been called. */                                                       \\r
  98         usCriticalNesting++;                                                                                                            \\r
  99 }\r
 100 \r
 101 #define portEXIT_CRITICAL()                                                                                                             \\r
 102 {                                                                                                                                                               \\r
 103 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 104                                                                                                                                                                 \\r
 105         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 106         {                                                                                                                                                       \\r
 107                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 108                 usCriticalNesting--;                                                                                                    \\r
 109                                                                                                                                                                 \\r
 110                 /* If the nesting level has reached zero then interrupts should be */   \\r
 111                 /* re-enabled. */                                                                                                               \\r
 112                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 113                 {                                                                                                                                               \\r
 114                         portENABLE_INTERRUPTS();                                                                                        \\r
 115                 }                                                                                                                                               \\r
 116         }                                                                                                                                                       \\r
 117 }\r
 118 /*-----------------------------------------------------------*/\r
 119 \r
 120 /* Task utilities. */\r
 121 \r
 122 /*\r
 123  * Manual context switch called by portYIELD or taskYIELD.  \r
 124  */\r
 125 extern void vPortYield( void );\r
 126  \r
 127 #define portYIELD() vPortYield()\r
 128 /*-----------------------------------------------------------*/\r
 129 \r
 130 #define portENTER_SWITCHING_ISR()\r
 131 #define portEXIT_SWITCHING_ISR( SwitchRequired )        \\r
 132                 {                                                                                       \\r
 133                         extern unsigned portCHAR ucReschedule;  \\r
 134                         if( SwitchRequired )                                    \\r
 135                         {                                                                       \\r
 136                                 ucReschedule = 1;                                       \\r
 137                         }                                                                               \\r
 138                 }\r
 139 \r
 140 /* Hardwware specifics. */\r
 141 #define portBYTE_ALIGNMENT                      2\r
 142 #define portSTACK_GROWTH                        ( -1 )\r
 143 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
 144 /*-----------------------------------------------------------*/\r
 145 \r
 146 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 147 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 148 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 149 \r
 150 /* Compiler specifics. */\r
 151 #define inline\r
 152 #define portNOP()\r
 153 \r
 154 \r
 155 /* Just used by the demo application to indicate which form of interrupt \r
 156 service routine should be used.  See the online port documentation for more\r
 157 information. */\r
 158 #define MSP_ROWLEY_MP_PORT\r
 159 \r
 160 #endif /* PORTMACRO_H */\r
 161 \r