begriffs open source - freertos/blob - portable/IAR/MSP430/portmacro.h

   1 /*\r
   2  * FreeRTOS Kernel <DEVELOPMENT BRANCH>\r
   3  * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.\r
   4  *\r
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
   6  * this software and associated documentation files (the "Software"), to deal in\r
   7  * the Software without restriction, including without limitation the rights to\r
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
   9  * the Software, and to permit persons to whom the Software is furnished to do so,\r
  10  * subject to the following conditions:\r
  11  *\r
  12  * The above copyright notice and this permission notice shall be included in all\r
  13  * copies or substantial portions of the Software.\r
  14  *\r
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  21  *\r
  22  * https://www.FreeRTOS.org\r
  23  * https://github.com/FreeRTOS\r
  24  *\r
  25  */\r
  26 \r
  27 #ifndef PORTMACRO_H\r
  28 #define PORTMACRO_H\r
  29 \r
  30 /*-----------------------------------------------------------\r
  31  * Port specific definitions.\r
  32  *\r
  33  * The settings in this file configure FreeRTOS correctly for the\r
  34  * given hardware and compiler.\r
  35  *\r
  36  * These settings should not be altered.\r
  37  *-----------------------------------------------------------\r
  38  */\r
  39 \r
  40 /* Type definitions. */\r
  41 #define portCHAR                char\r
  42 #define portFLOAT               float\r
  43 #define portDOUBLE              double\r
  44 #define portLONG                long\r
  45 #define portSHORT               int\r
  46 #define portSTACK_TYPE  uint16_t\r
  47 #define portBASE_TYPE   short\r
  48 \r
  49 typedef portSTACK_TYPE StackType_t;\r
  50 typedef short BaseType_t;\r
  51 typedef unsigned short UBaseType_t;\r
  52 \r
  53 \r
  54 #if( configUSE_16_BIT_TICKS == 1 )\r
  55         typedef uint16_t TickType_t;\r
  56         #define portMAX_DELAY ( TickType_t ) 0xffff\r
  57 #else\r
  58         typedef uint32_t TickType_t;\r
  59         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL\r
  60 #endif\r
  61 \r
  62 /*-----------------------------------------------------------*/\r
  63 \r
  64 /* Interrupt control macros. */\r
  65 #define portDISABLE_INTERRUPTS()        _DINT(); _NOP()\r
  66 #define portENABLE_INTERRUPTS()         _EINT(); _NOP()\r
  67 /*-----------------------------------------------------------*/\r
  68 \r
  69 /* Critical section control macros. */\r
  70 #define portNO_CRITICAL_SECTION_NESTING         ( ( uint16_t ) 0 )\r
  71 \r
  72 #define portENTER_CRITICAL()                                                                                                    \\r
  73 {                                                                                                                                                               \\r
  74 extern volatile uint16_t usCriticalNesting;                                                     \\r
  75                                                                                                                                                                 \\r
  76         portDISABLE_INTERRUPTS();                                                                                                       \\r
  77                                                                                                                                                                 \\r
  78         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \\r
  79         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \\r
  80         /* times portENTER_CRITICAL() has been called. */                                                       \\r
  81         usCriticalNesting++;                                                                                                            \\r
  82 }\r
  83 \r
  84 #define portEXIT_CRITICAL()                                                                                                             \\r
  85 {                                                                                                                                                               \\r
  86 extern volatile uint16_t usCriticalNesting;                                                     \\r
  87                                                                                                                                                                 \\r
  88         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \\r
  89         {                                                                                                                                                       \\r
  90                 /* Decrement the nesting count as we are leaving a critical section. */ \\r
  91                 usCriticalNesting--;                                                                                                    \\r
  92                                                                                                                                                                 \\r
  93                 /* If the nesting level has reached zero then interrupts should be */   \\r
  94                 /* re-enabled. */                                                                                                               \\r
  95                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \\r
  96                 {                                                                                                                                               \\r
  97                         portENABLE_INTERRUPTS();                                                                                        \\r
  98                 }                                                                                                                                               \\r
  99         }                                                                                                                                                       \\r
 100 }\r
 101 /*-----------------------------------------------------------*/\r
 102 \r
 103 /* Task utilities. */\r
 104 \r
 105 /*\r
 106  * Manual context switch called by portYIELD or taskYIELD.\r
 107  */\r
 108 extern void vPortYield( void );\r
 109 #define portYIELD() vPortYield()\r
 110 /*-----------------------------------------------------------*/\r
 111 \r
 112 /* Hardware specifics. */\r
 113 #define portBYTE_ALIGNMENT                      2\r
 114 #define portSTACK_GROWTH                        ( -1 )\r
 115 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )\r
 116 #define portNOP()\r
 117 #define portPOINTER_SIZE_TYPE           uint16_t\r
 118 /*-----------------------------------------------------------*/\r
 119 \r
 120 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 121 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 122 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 123 \r
 124 #if configINTERRUPT_EXAMPLE_METHOD == 2\r
 125 \r
 126 extern void vTaskSwitchContext( void );\r
 127 #define portYIELD_FROM_ISR( x ) do { if( x ) vTaskSwitchContext(); } while( 0 )\r
 128 \r
 129 #endif\r
 130 \r
 131 #endif /* PORTMACRO_H */\r
 132 \r