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

   1 /*\r
   2     FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.\r
   3         \r
   4 \r
   5     ***************************************************************************\r
   6      *                                                                       *\r
   7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
   8      *    Complete, revised, and edited pdf reference manuals are also       *\r
   9      *    available.                                                         *\r
  10      *                                                                       *\r
  11      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  12      *    ensuring you get running as quickly as possible and with an        *\r
  13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  14      *    the FreeRTOS project to continue with its mission of providing     *\r
  15      *    professional grade, cross platform, de facto standard solutions    *\r
  16      *    for microcontrollers - completely free of charge!                  *\r
  17      *                                                                       *\r
  18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  19      *                                                                       *\r
  20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  21      *                                                                       *\r
  22     ***************************************************************************\r
  23 \r
  24 \r
  25     This file is part of the FreeRTOS distribution.\r
  26 \r
  27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  28     the terms of the GNU General Public License (version 2) as published by the\r
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  30     >>>NOTE<<< The modification to the GPL is included to allow you to\r
  31     distribute a combined work that includes FreeRTOS without being obliged to\r
  32     provide the source code for proprietary components outside of the FreeRTOS\r
  33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
  34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
  35     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  36     more details. You should have received a copy of the GNU General Public\r
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
  39     by writing to Richard Barry, contact details for whom are available on the\r
  40     FreeRTOS WEB site.\r
  41 \r
  42     1 tab == 4 spaces!\r
  43     \r
  44     ***************************************************************************\r
  45      *                                                                       *\r
  46      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  47      *    not run, what could be wrong?                                      *\r
  48      *                                                                       *\r
  49      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  50      *                                                                       *\r
  51     ***************************************************************************\r
  52 \r
  53     \r
  54     http://www.FreeRTOS.org - Documentation, training, latest information, \r
  55     license and contact details.\r
  56     \r
  57     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  58     including FreeRTOS+Trace - an indispensable productivity tool.\r
  59 \r
  60     Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
  61     the code with commercial support, indemnification, and middleware, under \r
  62     the OpenRTOS brand: http://www.OpenRTOS.com.  High Integrity Systems also\r
  63     provide a safety engineered and independently SIL3 certified version under \r
  64     the SafeRTOS brand: http://www.SafeRTOS.com.\r
  65 */\r
  66 \r
  67 #ifndef PORTMACRO_H\r
  68 #define PORTMACRO_H\r
  69 \r
  70 /*-----------------------------------------------------------\r
  71  * Port specific definitions.  \r
  72  *\r
  73  * The settings in this file configure FreeRTOS correctly for the\r
  74  * given hardware and compiler.\r
  75  *\r
  76  * These settings should not be altered.\r
  77  *-----------------------------------------------------------\r
  78  */\r
  79 \r
  80 /* Type definitions. */\r
  81 #define portCHAR                char\r
  82 #define portFLOAT               float\r
  83 #define portDOUBLE              double\r
  84 #define portLONG                long\r
  85 #define portSHORT               int\r
  86 #define portSTACK_TYPE  unsigned portSHORT\r
  87 #define portBASE_TYPE   portSHORT\r
  88 \r
  89 #if( configUSE_16_BIT_TICKS == 1 )\r
  90         typedef unsigned portSHORT portTickType;\r
  91         #define portMAX_DELAY ( portTickType ) 0xffff\r
  92 #else\r
  93         typedef unsigned portLONG portTickType;\r
  94         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  95 #endif\r
  96 \r
  97 /*-----------------------------------------------------------*/ \r
  98 \r
  99 /* Interrupt control macros. */\r
 100 #define portDISABLE_INTERRUPTS()        _DINT(); _NOP()\r
 101 #define portENABLE_INTERRUPTS()         _EINT();\r
 102 /*-----------------------------------------------------------*/\r
 103 \r
 104 /* Critical section control macros. */\r
 105 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
 106 \r
 107 #define portENTER_CRITICAL()                                                                                                    \\r
 108 {                                                                                                                                                               \\r
 109 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 110                                                                                                                                                                 \\r
 111         portDISABLE_INTERRUPTS();                                                                                                       \\r
 112                                                                                                                                                                 \\r
 113         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
 114         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
 115         /* times portENTER_CRITICAL() has been called. */                                                       \\r
 116         usCriticalNesting++;                                                                                                            \\r
 117 }\r
 118 \r
 119 #define portEXIT_CRITICAL()                                                                                                             \\r
 120 {                                                                                                                                                               \\r
 121 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 122                                                                                                                                                                 \\r
 123         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 124         {                                                                                                                                                       \\r
 125                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 126                 usCriticalNesting--;                                                                                                    \\r
 127                                                                                                                                                                 \\r
 128                 /* If the nesting level has reached zero then interrupts should be */   \\r
 129                 /* re-enabled. */                                                                                                               \\r
 130                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 131                 {                                                                                                                                               \\r
 132                         portENABLE_INTERRUPTS();                                                                                        \\r
 133                 }                                                                                                                                               \\r
 134         }                                                                                                                                                       \\r
 135 }\r
 136 /*-----------------------------------------------------------*/\r
 137 \r
 138 /* Task utilities. */\r
 139 \r
 140 /*\r
 141  * Manual context switch called by portYIELD or taskYIELD.  \r
 142  */\r
 143 extern void vPortYield( void ); \r
 144 #define portYIELD() vPortYield()\r
 145 /*-----------------------------------------------------------*/\r
 146 \r
 147 /* Hardware specifics. */\r
 148 #define portBYTE_ALIGNMENT                      2\r
 149 #define portSTACK_GROWTH                        ( -1 )\r
 150 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )  \r
 151 #define portNOP()       \r
 152 /*-----------------------------------------------------------*/\r
 153 \r
 154 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 155 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 156 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 157 \r
 158 #if configINTERRUPT_EXAMPLE_METHOD == 2\r
 159 \r
 160 extern void vTaskSwitchContext( void );\r
 161 #define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()\r
 162 \r
 163 #endif\r
 164 \r
 165 #endif /* PORTMACRO_H */\r
 166 \r