begriffs open source - freertos/blob - portable/Rowley/MSP430F449/portmacro.h

   1 /*
   2  * FreeRTOS SMP Kernel V202110.00
   3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   6  * this software and associated documentation files (the "Software"), to deal in
   7  * the Software without restriction, including without limitation the rights to
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is furnished to do so,
  10  * subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in all
  13  * copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * https://www.FreeRTOS.org
  23  * https://github.com/FreeRTOS
  24  *
  25  * 1 tab == 4 spaces!
  26  */
  27
  28 #ifndef PORTMACRO_H
  29 #define PORTMACRO_H
  30
  31 /*-----------------------------------------------------------
  32  * Port specific definitions.
  33  *
  34  * The settings in this file configure FreeRTOS correctly for the
  35  * given hardware and compiler.
  36  *
  37  * These settings should not be altered.
  38  *-----------------------------------------------------------
  39  */
  40
  41 /* Type definitions. */
  42 #define portCHAR                char
  43 #define portFLOAT               float
  44 #define portDOUBLE              double
  45 #define portLONG                long
  46 #define portSHORT               int
  47 #define portSTACK_TYPE  uint16_t
  48 #define portBASE_TYPE   short
  49
  50 typedef portSTACK_TYPE StackType_t;
  51 typedef short BaseType_t;
  52 typedef unsigned short UBaseType_t;
  53
  54
  55 #if( configUSE_16_BIT_TICKS == 1 )
  56         typedef uint16_t TickType_t;
  57         #define portMAX_DELAY ( TickType_t ) 0xffff
  58 #else
  59         typedef uint32_t TickType_t;
  60         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
  61 #endif
  62
  63 /*-----------------------------------------------------------*/
  64
  65 /* Interrupt control macros. */
  66 #define portDISABLE_INTERRUPTS()        _DINT(); _NOP()
  67 #define portENABLE_INTERRUPTS()         _EINT();
  68 /*-----------------------------------------------------------*/
  69
  70 /* Critical section control macros. */
  71 #define portNO_CRITICAL_SECTION_NESTING         ( ( uint16_t ) 0 )
  72
  73 #define portENTER_CRITICAL()                                                                                                    \
  74 {                                                                                                                                                               \
  75 extern volatile uint16_t usCriticalNesting;                                                     \
  76                                                                                                                                                                 \
  77         portDISABLE_INTERRUPTS();                                                                                                       \
  78                                                                                                                                                                 \
  79         /* Now interrupts are disabled usCriticalNesting can be accessed */                     \
  80         /* directly.  Increment ulCriticalNesting to keep a count of how many */        \
  81         /* times portENTER_CRITICAL() has been called. */                                                       \
  82         usCriticalNesting++;                                                                                                            \
  83 }
  84
  85 #define portEXIT_CRITICAL()                                                                                                             \
  86 {                                                                                                                                                               \
  87 extern volatile uint16_t usCriticalNesting;                                                     \
  88                                                                                                                                                                 \
  89         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                       \
  90         {                                                                                                                                                       \
  91                 /* Decrement the nesting count as we are leaving a critical section. */ \
  92                 usCriticalNesting--;                                                                                                    \
  93                                                                                                                                                                 \
  94                 /* If the nesting level has reached zero then interrupts should be */   \
  95                 /* re-enabled. */                                                                                                               \
  96                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                              \
  97                 {                                                                                                                                               \
  98                         portENABLE_INTERRUPTS();                                                                                        \
  99                 }                                                                                                                                               \
 100         }                                                                                                                                                       \
 101 }
 102 /*-----------------------------------------------------------*/
 103
 104 /* Task utilities. */
 105
 106 /*
 107  * Manual context switch called by portYIELD or taskYIELD.
 108  */
 109 extern void vPortYield( void );
 110 #define portYIELD() vPortYield()
 111 /*-----------------------------------------------------------*/
 112
 113 /* Hardware specifics. */
 114 #define portBYTE_ALIGNMENT                      2
 115 #define portSTACK_GROWTH                        ( -1 )
 116 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
 117 #define portNOP()
 118 /*-----------------------------------------------------------*/
 119
 120 /* Task function macros as described on the FreeRTOS.org WEB site. */
 121 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 122 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
 123
 124 #if configINTERRUPT_EXAMPLE_METHOD == 2
 125
 126 extern void vTaskSwitchContext( void );
 127 #define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()
 128
 129 #endif
 130
 131 #endif /* PORTMACRO_H */
 132