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

   1 /*\r
   2     FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.\r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS provides completely free yet professionally developed,    *\r
  10      *    robust, strictly quality controlled, supported, and cross          *\r
  11      *    platform software that has become a de facto standard.             *\r
  12      *                                                                       *\r
  13      *    Help yourself get started quickly and support the FreeRTOS         *\r
  14      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  15      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  16      *                                                                       *\r
  17      *    Thank you!                                                         *\r
  18      *                                                                       *\r
  19     ***************************************************************************\r
  20 \r
  21     This file is part of the FreeRTOS distribution.\r
  22 \r
  23     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  24     the terms of the GNU General Public License (version 2) as published by the\r
  25     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  26 \r
  27     >>!   NOTE: The modification to the GPL is included to allow you to     !<<\r
  28     >>!   distribute a combined work that includes FreeRTOS without being   !<<\r
  29     >>!   obliged to provide the source code for proprietary components     !<<\r
  30     >>!   outside of the FreeRTOS kernel.                                   !<<\r
  31 \r
  32     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  33     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  34     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  35     link: http://www.freertos.org/a00114.html\r
  36 \r
  37     1 tab == 4 spaces!\r
  38 \r
  39     ***************************************************************************\r
  40      *                                                                       *\r
  41      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  42      *    not run, what could be wrong?"                                     *\r
  43      *                                                                       *\r
  44      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  45      *                                                                       *\r
  46     ***************************************************************************\r
  47 \r
  48     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  49     license and Real Time Engineers Ltd. contact details.\r
  50 \r
  51     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  52     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  53     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  54 \r
  55     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  56     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  57     licenses offer ticketed support, indemnification and middleware.\r
  58 \r
  59     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  60     engineered and independently SIL3 certified version for use in safety and\r
  61     mission critical applications that require provable dependability.\r
  62 \r
  63     1 tab == 4 spaces!\r
  64 */\r
  65 \r
  66 #ifndef PORTMACRO_H\r
  67 #define PORTMACRO_H\r
  68 \r
  69 /*-----------------------------------------------------------\r
  70  * Port specific definitions.\r
  71  *\r
  72  * The settings in this file configure FreeRTOS correctly for the\r
  73  * given hardware and compiler.\r
  74  *\r
  75  * These settings should not be altered.\r
  76  *-----------------------------------------------------------\r
  77  */\r
  78 \r
  79 /* Type definitions. */\r
  80 #define portCHAR                char\r
  81 #define portFLOAT               float\r
  82 #define portDOUBLE              double\r
  83 #define portLONG                long\r
  84 #define portSHORT               int\r
  85 #define portSTACK_TYPE  uint16_t\r
  86 #define portBASE_TYPE   short\r
  87 \r
  88 typedef portSTACK_TYPE StackType_t;\r
  89 typedef short BaseType_t;\r
  90 typedef unsigned short UBaseType_t;\r
  91 \r
  92 \r
  93 #if( configUSE_16_BIT_TICKS == 1 )\r
  94         typedef uint16_t TickType_t;\r
  95         #define portMAX_DELAY ( TickType_t ) 0xffff\r
  96 #else\r
  97         typedef uint32_t TickType_t;\r
  98         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL\r
  99 #endif\r
 100 \r
 101 /*-----------------------------------------------------------*/\r
 102 \r
 103 /* Interrupt control macros. */\r
 104 #define portDISABLE_INTERRUPTS()        _DINT(); _NOP()\r
 105 #define portENABLE_INTERRUPTS()         _EINT();\r
 106 /*-----------------------------------------------------------*/\r
 107 \r
 108 /* Critical section control macros. */\r
 109 #define portNO_CRITICAL_SECTION_NESTING         ( ( uint16_t ) 0 )\r
 110 \r
 111 #define portENTER_CRITICAL()                                                                                                    \\r
 112 {                                                                                                                                                               \\r
 113 extern volatile uint16_t usCriticalNesting;                                                     \\r
 114                                                                                                                                                                 \\r
 115         portDISABLE_INTERRUPTS();                                                                                                       \\r
 116                                                                                                                                                                 \\r
 117         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
 118         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
 119         /* times portENTER_CRITICAL() has been called. */                                                       \\r
 120         usCriticalNesting++;                                                                                                            \\r
 121 }\r
 122 \r
 123 #define portEXIT_CRITICAL()                                                                                                             \\r
 124 {                                                                                                                                                               \\r
 125 extern volatile uint16_t usCriticalNesting;                                                     \\r
 126                                                                                                                                                                 \\r
 127         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
 128         {                                                                                                                                                       \\r
 129                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
 130                 usCriticalNesting--;                                                                                                    \\r
 131                                                                                                                                                                 \\r
 132                 /* If the nesting level has reached zero then interrupts should be */   \\r
 133                 /* re-enabled. */                                                                                                               \\r
 134                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
 135                 {                                                                                                                                               \\r
 136                         portENABLE_INTERRUPTS();                                                                                        \\r
 137                 }                                                                                                                                               \\r
 138         }                                                                                                                                                       \\r
 139 }\r
 140 /*-----------------------------------------------------------*/\r
 141 \r
 142 /* Task utilities. */\r
 143 \r
 144 /*\r
 145  * Manual context switch called by portYIELD or taskYIELD.\r
 146  */\r
 147 extern void vPortYield( void );\r
 148 #define portYIELD() vPortYield()\r
 149 /*-----------------------------------------------------------*/\r
 150 \r
 151 /* Hardware specifics. */\r
 152 #define portBYTE_ALIGNMENT                      2\r
 153 #define portSTACK_GROWTH                        ( -1 )\r
 154 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )\r
 155 #define portNOP()\r
 156 /*-----------------------------------------------------------*/\r
 157 \r
 158 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 159 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 160 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel\r
 161 \r
 162 #if configINTERRUPT_EXAMPLE_METHOD == 2\r
 163 \r
 164 extern void vTaskSwitchContext( void );\r
 165 #define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()\r
 166 \r
 167 #endif\r
 168 \r
 169 #endif /* PORTMACRO_H */\r
 170 \r