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

   1 /*\r
   2     FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT\r
   5     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
  10      *    Complete, revised, and edited pdf reference manuals are also       *\r
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  12      *                                                                       *\r
  13      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  14      *    ensuring you get running as quickly as possible and with an        *\r
  15      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  16      *    the FreeRTOS project to continue with its mission of providing     *\r
  17      *    professional grade, cross platform, de facto standard solutions    *\r
  18      *    for microcontrollers - completely free of charge!                  *\r
  19      *                                                                       *\r
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  21      *                                                                       *\r
  22      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  23      *                                                                       *\r
  24     ***************************************************************************\r
  25 \r
  26 \r
  27     This file is part of the FreeRTOS distribution.\r
  28 \r
  29     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  30     the terms of the GNU General Public License (version 2) as published by the\r
  31     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  32 \r
  33     >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to\r
  34     distribute a combined work that includes FreeRTOS without being obliged to\r
  35     provide the source code for proprietary components outside of the FreeRTOS\r
  36     kernel.\r
  37 \r
  38     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  39     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  40     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more\r
  41     details. You should have received a copy of the GNU General Public License\r
  42     and the FreeRTOS license exception along with FreeRTOS; if not it can be\r
  43     viewed here: http://www.freertos.org/a00114.html and also obtained by\r
  44     writing to Real Time Engineers Ltd., contact details for whom are available\r
  45     on the FreeRTOS WEB site.\r
  46 \r
  47     1 tab == 4 spaces!\r
  48 \r
  49     ***************************************************************************\r
  50      *                                                                       *\r
  51      *    Having a problem?  Start by reading the FAQ "My application does   *\r
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  53      *                                                                       *\r
  54      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  55      *                                                                       *\r
  56     ***************************************************************************\r
  57 \r
  58 \r
  59     http://www.FreeRTOS.org - Documentation, books, training, latest versions, \r
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  65 \r
  66     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High \r
  67     Integrity Systems, who sell the code with commercial support, \r
  68     indemnification and middleware, under the OpenRTOS brand.\r
  69     \r
  70     http://www.SafeRTOS.com - High Integrity Systems also provide a safety \r
  71     engineered and independently SIL3 certified version for use in safety and \r
  72     mission critical applications that require provable dependability.\r
  73 */\r
  74 \r
  75 #ifndef PORTMACRO_H\r
  76 #define PORTMACRO_H\r
  77 \r
  78 /*-----------------------------------------------------------\r
  79  * Port specific definitions.  \r
  80  *\r
  81  * The settings in this file configure FreeRTOS correctly for the\r
  82  * given hardware and compiler.\r
  83  *\r
  84  * These settings should not be altered.\r
  85  *-----------------------------------------------------------\r
  86  */\r
  87 \r
  88 /* Type definitions. */\r
  89 #define portCHAR                char\r
  90 #define portFLOAT               float\r
  91 #define portDOUBLE              double\r
  92 #define portLONG                long\r
  93 #define portSHORT               int\r
  94 #define portSTACK_TYPE  unsigned portSHORT\r
  95 #define portBASE_TYPE   portSHORT\r
  96 \r
  97 #if( configUSE_16_BIT_TICKS == 1 )\r
  98         typedef unsigned portSHORT portTickType;\r
  99         #define portMAX_DELAY ( portTickType ) 0xffff\r
 100 #else\r
 101         typedef unsigned portLONG portTickType;\r
 102         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
 103 #endif\r
 104 \r
 105 /*-----------------------------------------------------------*/ \r
 106 \r
 107 /* Interrupt control macros. */\r
 108 #define portDISABLE_INTERRUPTS()        _DINT(); _NOP()\r
 109 #define portENABLE_INTERRUPTS()         _EINT();\r
 110 /*-----------------------------------------------------------*/\r
 111 \r
 112 /* Critical section control macros. */\r
 113 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
 114 \r
 115 #define portENTER_CRITICAL()                                                                                                    \\r
 116 {                                                                                                                                                               \\r
 117 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 118                                                                                                                                                                 \\r
 119         portDISABLE_INTERRUPTS();                                                                                                       \\r
 120                                                                                                                                                                 \\r
 121         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
 122         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
 123         /* times portENTER_CRITICAL() has been called. */                                                       \\r
 124         usCriticalNesting++;                                                                                                            \\r
 125 }\r
 126 \r
 127 #define portEXIT_CRITICAL()                                                                                                             \\r
 128 {                                                                                                                                                               \\r
 129 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 130                                                                                                                                                                 \\r
 131         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 132         {                                                                                                                                                       \\r
 133                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 134                 usCriticalNesting--;                                                                                                    \\r
 135                                                                                                                                                                 \\r
 136                 /* If the nesting level has reached zero then interrupts should be */   \\r
 137                 /* re-enabled. */                                                                                                               \\r
 138                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 139                 {                                                                                                                                               \\r
 140                         portENABLE_INTERRUPTS();                                                                                        \\r
 141                 }                                                                                                                                               \\r
 142         }                                                                                                                                                       \\r
 143 }\r
 144 /*-----------------------------------------------------------*/\r
 145 \r
 146 /* Task utilities. */\r
 147 \r
 148 /*\r
 149  * Manual context switch called by portYIELD or taskYIELD.  \r
 150  */\r
 151 extern void vPortYield( void ); \r
 152 #define portYIELD() vPortYield()\r
 153 /*-----------------------------------------------------------*/\r
 154 \r
 155 /* Hardware specifics. */\r
 156 #define portBYTE_ALIGNMENT                      2\r
 157 #define portSTACK_GROWTH                        ( -1 )\r
 158 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )  \r
 159 #define portNOP()       \r
 160 /*-----------------------------------------------------------*/\r
 161 \r
 162 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 163 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 164 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 165 \r
 166 #if configINTERRUPT_EXAMPLE_METHOD == 2\r
 167 \r
 168 extern void vTaskSwitchContext( void );\r
 169 #define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()\r
 170 \r
 171 #endif\r
 172 \r
 173 #endif /* PORTMACRO_H */\r
 174 \r