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

   1 /*\r
   2         FreeRTOS.org V4.5.0 - Copyright (C) 2003-2007 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         See http://www.FreeRTOS.org for documentation, latest information, license \r
  28         and contact details.  Please ensure to read the configuration and relevant \r
  29         port sections of the online documentation.\r
  30 \r
  31         Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along\r
  32         with commercial development and support options.\r
  33         ***************************************************************************\r
  34 */\r
  35 \r
  36 #ifndef PORTMACRO_H\r
  37 #define PORTMACRO_H\r
  38 \r
  39 /*-----------------------------------------------------------\r
  40  * Port specific definitions.  \r
  41  *\r
  42  * The settings in this file configure FreeRTOS correctly for the\r
  43  * given hardware and compiler.\r
  44  *\r
  45  * These settings should not be altered.\r
  46  *-----------------------------------------------------------\r
  47  */\r
  48 \r
  49 /* Type definitions. */\r
  50 #define portCHAR                char\r
  51 #define portFLOAT               float\r
  52 #define portDOUBLE              double\r
  53 #define portLONG                long\r
  54 #define portSHORT               int\r
  55 #define portSTACK_TYPE  unsigned portSHORT\r
  56 #define portBASE_TYPE   portSHORT\r
  57 \r
  58 #if( configUSE_16_BIT_TICKS == 1 )\r
  59         typedef unsigned portSHORT portTickType;\r
  60         #define portMAX_DELAY ( portTickType ) 0xffff\r
  61 #else\r
  62         typedef unsigned portLONG portTickType;\r
  63         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  64 #endif\r
  65 \r
  66 /*-----------------------------------------------------------*/ \r
  67 \r
  68 /* Interrupt control macros. */\r
  69 #define portDISABLE_INTERRUPTS()        _DINT();\r
  70 #define portENABLE_INTERRUPTS()         _EINT();\r
  71 /*-----------------------------------------------------------*/\r
  72 \r
  73 /* Critical section control macros. */\r
  74 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
  75 \r
  76 #define portENTER_CRITICAL()                                                                                                    \\r
  77 {                                                                                                                                                               \\r
  78 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
  79                                                                                                                                                                 \\r
  80         portDISABLE_INTERRUPTS();                                                                                                       \\r
  81                                                                                                                                                                 \\r
  82         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
  83         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
  84         /* times portENTER_CRITICAL() has been called. */                                                       \\r
  85         usCriticalNesting++;                                                                                                            \\r
  86 }\r
  87 \r
  88 #define portEXIT_CRITICAL()                                                                                                             \\r
  89 {                                                                                                                                                               \\r
  90 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
  91                                                                                                                                                                 \\r
  92         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
  93         {                                                                                                                                                       \\r
  94                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
  95                 usCriticalNesting--;                                                                                                    \\r
  96                                                                                                                                                                 \\r
  97                 /* If the nesting level has reached zero then interrupts should be */   \\r
  98                 /* re-enabled. */                                                                                                               \\r
  99                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 100                 {                                                                                                                                               \\r
 101                         portENABLE_INTERRUPTS();                                                                                        \\r
 102                 }                                                                                                                                               \\r
 103         }                                                                                                                                                       \\r
 104 }\r
 105 /*-----------------------------------------------------------*/\r
 106 \r
 107 /* Task utilities. */\r
 108 \r
 109 /*\r
 110  * Manual context switch called by portYIELD or taskYIELD.  \r
 111  */\r
 112 extern void vPortYield( void ); \r
 113 #define portYIELD() vPortYield()\r
 114 /*-----------------------------------------------------------*/\r
 115 \r
 116 /* Hardware specifics. */\r
 117 #define portBYTE_ALIGNMENT                      2\r
 118 #define portSTACK_GROWTH                        ( -1 )\r
 119 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )  \r
 120 #define portNOP()       \r
 121 /*-----------------------------------------------------------*/\r
 122 \r
 123 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 124 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 125 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 126 \r
 127 /* Compiler specifics. */\r
 128 #define inline\r
 129 \r
 130 /* Just used by the demo application to indicate which form of interrupt \r
 131 service routine should be used.  See the online port documentation for more\r
 132 information. */\r
 133 #define MSP_ROWLEY_RB_PORT\r
 134 \r
 135 #endif /* PORTMACRO_H */\r
 136 \r