git.sur5r.net Git - freertos/blob - FreeRTOS/Source/portable/IAR/MSP430X/portmacro.h

   1 /*\r
   2     FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   5 \r
   6     ***************************************************************************\r
   7      *                                                                       *\r
   8      *    FreeRTOS provides completely free yet professionally developed,    *\r
   9      *    robust, strictly quality controlled, supported, and cross          *\r
  10      *    platform software that has become a de facto standard.             *\r
  11      *                                                                       *\r
  12      *    Help yourself get started quickly and support the FreeRTOS         *\r
  13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  15      *                                                                       *\r
  16      *    Thank you!                                                         *\r
  17      *                                                                       *\r
  18     ***************************************************************************\r
  19 \r
  20     This file is part of the FreeRTOS distribution.\r
  21 \r
  22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  23     the terms of the GNU General Public License (version 2) as published by the\r
  24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  25 \r
  26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  28     >>! the source code for proprietary components outside of the FreeRTOS\r
  29     >>! kernel.\r
  30 \r
  31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  34     link: http://www.freertos.org/a00114.html\r
  35 \r
  36     1 tab == 4 spaces!\r
  37 \r
  38     ***************************************************************************\r
  39      *                                                                       *\r
  40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  41      *    not run, what could be wrong?"                                     *\r
  42      *                                                                       *\r
  43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  44      *                                                                       *\r
  45     ***************************************************************************\r
  46 \r
  47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  48     license and Real Time Engineers Ltd. contact details.\r
  49 \r
  50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  53 \r
  54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  56     licenses offer ticketed support, indemnification and middleware.\r
  57 \r
  58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  59     engineered and independently SIL3 certified version for use in safety and\r
  60     mission critical applications that require provable dependability.\r
  61 \r
  62     1 tab == 4 spaces!\r
  63 */\r
  64 \r
  65 #ifndef PORTMACRO_H\r
  66 #define PORTMACRO_H\r
  67 \r
  68 /*-----------------------------------------------------------\r
  69  * Port specific definitions.\r
  70  *\r
  71  * The settings in this file configure FreeRTOS correctly for the\r
  72  * given hardware and compiler.\r
  73  *\r
  74  * These settings should not be altered.\r
  75  *-----------------------------------------------------------\r
  76  */\r
  77 \r
  78 /* Hardware includes. */\r
  79 #include "msp430.h"\r
  80 \r
  81 /* Type definitions. */\r
  82 #define portCHAR                char\r
  83 #define portFLOAT               float\r
  84 #define portDOUBLE              double\r
  85 #define portLONG                long\r
  86 #define portSHORT               int\r
  87 #define portBASE_TYPE   portSHORT\r
  88 \r
  89 /* The stack type changes depending on the data model. */\r
  90 #if( __DATA_MODEL__ == __DATA_MODEL_SMALL__ )\r
  91         #define portSTACK_TYPE unsigned short\r
  92 #else\r
  93         #define portSTACK_TYPE unsigned long\r
  94 #endif\r
  95 \r
  96 #if( configUSE_16_BIT_TICKS == 1 )\r
  97         typedef unsigned portSHORT portTickType;\r
  98         #define portMAX_DELAY ( portTickType ) 0xffff\r
  99 #else\r
 100         typedef unsigned portLONG portTickType;\r
 101         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
 102 #endif\r
 103 \r
 104 /*-----------------------------------------------------------*/ \r
 105 \r
 106 /* Interrupt control macros. */\r
 107 #define portDISABLE_INTERRUPTS()        _DINT();_NOP()\r
 108 #define portENABLE_INTERRUPTS()         _EINT()\r
 109 /*-----------------------------------------------------------*/\r
 110 \r
 111 /* Critical section control macros. */\r
 112 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portSHORT ) 0 )\r
 113 \r
 114 #define portENTER_CRITICAL()                                                                                                    \\r
 115 {                                                                                                                                                               \\r
 116 extern volatile unsigned short usCriticalNesting;                                                               \\r
 117                                                                                                                                                                 \\r
 118         portDISABLE_INTERRUPTS();                                                                                                       \\r
 119                                                                                                                                                                 \\r
 120         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
 121         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
 122         /* times portENTER_CRITICAL() has been called. */                                                       \\r
 123         usCriticalNesting++;                                                                                                            \\r
 124 }\r
 125 \r
 126 #define portEXIT_CRITICAL()                                                                                                             \\r
 127 {                                                                                                                                                               \\r
 128 extern volatile unsigned short usCriticalNesting;                                                       \\r
 129                                                                                                                                                                 \\r
 130         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 131         {                                                                                                                                                       \\r
 132                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 133                 usCriticalNesting--;                                                                                                    \\r
 134                                                                                                                                                                 \\r
 135                 /* If the nesting level has reached zero then interrupts should be */   \\r
 136                 /* re-enabled. */                                                                                                               \\r
 137                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 138                 {                                                                                                                                               \\r
 139                         portENABLE_INTERRUPTS();                                                                                        \\r
 140                 }                                                                                                                                               \\r
 141         }                                                                                                                                                       \\r
 142 }\r
 143 /*-----------------------------------------------------------*/\r
 144 \r
 145 /* Task utilities. */\r
 146 \r
 147 /*\r
 148  * Manual context switch called by portYIELD or taskYIELD.\r
 149  */\r
 150 extern void vPortYield( void );\r
 151 #define portYIELD() vPortYield()\r
 152 /*-----------------------------------------------------------*/\r
 153 \r
 154 /* Hardware specifics. */\r
 155 #define portBYTE_ALIGNMENT                      2\r
 156 #define portSTACK_GROWTH                        ( -1 )\r
 157 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )  \r
 158 #define portNOP()                                       __no_operation()\r
 159 /*-----------------------------------------------------------*/\r
 160 \r
 161 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 162 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 163 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 164 \r
 165 extern void vTaskSwitchContext( void );\r
 166 #define portYIELD_FROM_ISR( x ) if( x ) vPortYield()\r
 167         \r
 168 void vApplicationSetupTimerInterrupt( void );\r
 169 \r
 170 /* sizeof( int ) != sizeof( long ) so a full printf() library is required if\r
 171 run time stats information is to be displayed. */\r
 172 #define portLU_PRINTF_SPECIFIER_REQUIRED\r
 173 \r
 174 #endif /* PORTMACRO_H */\r
 175 \r