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

   1 /*\r
   2     FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.\r
   3 \r
   4     ***************************************************************************\r
   5     *                                                                         *\r
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  14     *                                                                         *\r
  15     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *\r
  16     *                  http://www.FreeRTOS.org/Documentation                  *\r
  17     *                                                                         *\r
  18     * A pdf reference manual is also available.  Both are usually delivered   *\r
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  20     * and 8pm GMT (although please allow up to 24 hours in case of            *\r
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  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 exception to the GPL is included to allow you to distribute\r
  31     a combined work that includes FreeRTOS without being obliged to provide the\r
  32     source code for proprietary components outside of the FreeRTOS kernel.\r
  33     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
  34     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  35     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     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  45     contact details.\r
  46 \r
  47     http://www.SafeRTOS.com - A version that is certified for use in safety\r
  48     critical systems.\r
  49 \r
  50     http://www.OpenRTOS.com - Commercial support, development, porting,\r
  51     licensing and training services.\r
  52 */\r
  53 \r
  54 #ifndef PORTMACRO_H\r
  55 #define PORTMACRO_H\r
  56 \r
  57 #ifdef __cplusplus\r
  58 extern "C" {\r
  59 #endif\r
  60 \r
  61 /*-----------------------------------------------------------\r
  62  * Port specific definitions.  \r
  63  *\r
  64  * The settings in this file configure FreeRTOS correctly for the\r
  65  * given hardware and compiler.\r
  66  *\r
  67  * These settings should not be altered.\r
  68  *-----------------------------------------------------------\r
  69  */\r
  70 \r
  71 /* Type definitions. */\r
  72 #define portCHAR                char\r
  73 #define portFLOAT               float\r
  74 #define portDOUBLE              double\r
  75 #define portLONG                long\r
  76 #define portSHORT               int\r
  77 #define portSTACK_TYPE  unsigned portSHORT\r
  78 #define portBASE_TYPE   portSHORT\r
  79 \r
  80 #if( configUSE_16_BIT_TICKS == 1 )\r
  81         typedef unsigned portSHORT portTickType;\r
  82         #define portMAX_DELAY ( portTickType ) 0xffff\r
  83 #else\r
  84         typedef unsigned portLONG portTickType;\r
  85         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  86 #endif\r
  87 /*-----------------------------------------------------------*/ \r
  88 \r
  89 /* Interrupt control macros. */\r
  90 #define portDISABLE_INTERRUPTS()        asm volatile ( "DINT" )\r
  91 #define portENABLE_INTERRUPTS()         asm volatile ( "EINT" )\r
  92 /*-----------------------------------------------------------*/\r
  93 \r
  94 /* Critical section control macros. */\r
  95 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
  96 \r
  97 #define portENTER_CRITICAL()                                                                                                    \\r
  98 {                                                                                                                                                               \\r
  99 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 100                                                                                                                                                                 \\r
 101         portDISABLE_INTERRUPTS();                                                                                                       \\r
 102                                                                                                                                                                 \\r
 103         /* Now interrupts are disabled ulCriticalNesting can be accessed */                     \\r
 104         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
 105         /* times portENTER_CRITICAL() has been called. */                                                       \\r
 106         usCriticalNesting++;                                                                                                            \\r
 107 }\r
 108 \r
 109 #define portEXIT_CRITICAL()                                                                                                             \\r
 110 {                                                                                                                                                               \\r
 111 extern volatile unsigned portSHORT usCriticalNesting;                                                   \\r
 112                                                                                                                                                                 \\r
 113         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 114         {                                                                                                                                                       \\r
 115                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 116                 usCriticalNesting--;                                                                                                    \\r
 117                                                                                                                                                                 \\r
 118                 /* If the nesting level has reached zero then interrupts should be */   \\r
 119                 /* re-enabled. */                                                                                                               \\r
 120                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 121                 {                                                                                                                                               \\r
 122                         portENABLE_INTERRUPTS();                                                                                        \\r
 123                 }                                                                                                                                               \\r
 124         }                                                                                                                                                       \\r
 125 }\r
 126 /*-----------------------------------------------------------*/\r
 127 \r
 128 /* Task utilities. */\r
 129 extern void vPortYield( void ) __attribute__ ( ( naked ) );\r
 130 #define portYIELD()                                     vPortYield()\r
 131 #define portNOP()                       asm volatile ( "NOP" )\r
 132 /*-----------------------------------------------------------*/\r
 133 \r
 134 /* Hardwware specifics. */\r
 135 #define portBYTE_ALIGNMENT                      2\r
 136 #define portSTACK_GROWTH                        ( -1 )\r
 137 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
 138 /*-----------------------------------------------------------*/\r
 139 \r
 140 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 141 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 142 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 143 \r
 144 #ifdef __cplusplus\r
 145 }\r
 146 #endif\r
 147 \r
 148 #endif /* PORTMACRO_H */\r
 149 \r