begriffs open source - freertos/blob - portable/CCS/MSP430X/portmacro.h

   1 /*
   2  * FreeRTOS Kernel <DEVELOPMENT BRANCH>
   3  * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   4  *
   5  * SPDX-License-Identifier: MIT
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   8  * this software and associated documentation files (the "Software"), to deal in
   9  * the Software without restriction, including without limitation the rights to
  10  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
  11  * the Software, and to permit persons to whom the Software is furnished to do so,
  12  * subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in all
  15  * copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  19  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  20  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * https://www.FreeRTOS.org
  25  * https://github.com/FreeRTOS
  26  *
  27  */
  28
  29 #ifndef PORTMACRO_H
  30 #define PORTMACRO_H
  31
  32 /*-----------------------------------------------------------
  33  * Port specific definitions.
  34  *
  35  * The settings in this file configure FreeRTOS correctly for the
  36  * given hardware and compiler.
  37  *
  38  * These settings should not be altered.
  39  *-----------------------------------------------------------
  40  */
  41
  42 /* Type definitions. */
  43 #define portCHAR        char
  44 #define portFLOAT       float
  45 #define portDOUBLE      double
  46 #define portLONG        long
  47 #define portSHORT       int
  48 #define portBASE_TYPE   portSHORT
  49
  50 /* The stack type changes depending on the data model. */
  51 #ifdef __LARGE_DATA_MODEL__
  52     #define portSTACK_TYPE uint32_t
  53 #else
  54     #define portSTACK_TYPE uint16_t
  55     #define portPOINTER_SIZE_TYPE uint16_t
  56 #endif
  57
  58 typedef portSTACK_TYPE StackType_t;
  59 typedef short BaseType_t;
  60 typedef unsigned short UBaseType_t;
  61
  62 #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
  63     typedef uint16_t TickType_t;
  64     #define portMAX_DELAY ( TickType_t ) 0xffff
  65 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
  66     typedef uint32_t TickType_t;
  67     #define portMAX_DELAY ( TickType_t )    ( 0xFFFFFFFFUL )
  68 #else
  69     #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
  70 #endif
  71
  72 /*-----------------------------------------------------------*/
  73
  74 /* Interrupt control macros. */
  75 #define portDISABLE_INTERRUPTS()    __asm volatile ( " DINT\n" " NOP" )
  76 #define portENABLE_INTERRUPTS()     __asm volatile ( " NOP\n" " EINT\n" " NOP" )
  77 /*-----------------------------------------------------------*/
  78
  79 /* Critical section control macros. */
  80 #define portNO_CRITICAL_SECTION_NESTING     ( ( uint16_t ) 0 )
  81
  82 #define portENTER_CRITICAL()                                                    \
  83 {                                                                               \
  84 extern volatile uint16_t usCriticalNesting;                                     \
  85                                                                                 \
  86     portDISABLE_INTERRUPTS();                                                   \
  87                                                                                 \
  88     /* Now interrupts are disabled usCriticalNesting can be accessed */         \
  89     /* directly.  Increment ulCriticalNesting to keep a count of how many */    \
  90     /* times portENTER_CRITICAL() has been called. */                           \
  91     usCriticalNesting++;                                                        \
  92 }
  93
  94 #define portEXIT_CRITICAL()                                                     \
  95 {                                                                               \
  96 extern volatile uint16_t usCriticalNesting;                                     \
  97                                                                                 \
  98     if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                   \
  99     {                                                                           \
 100         /* Decrement the nesting count as we are leaving a critical section. */ \
 101         usCriticalNesting--;                                                    \
 102                                                                                 \
 103         /* If the nesting level has reached zero then interrupts should be */   \
 104         /* re-enabled. */                                                       \
 105         if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )              \
 106         {                                                                       \
 107             portENABLE_INTERRUPTS();                                            \
 108         }                                                                       \
 109     }                                                                           \
 110 }
 111 /*-----------------------------------------------------------*/
 112
 113 /* Task utilities. */
 114
 115 /*
 116  * Manual context switch called by portYIELD or taskYIELD.
 117  */
 118 extern void vPortYield( void );
 119 #define portYIELD() vPortYield()
 120 /*-----------------------------------------------------------*/
 121
 122 /* Hardware specifics. */
 123 #define portBYTE_ALIGNMENT          2
 124 #define portSTACK_GROWTH            ( -1 )
 125 #define portTICK_PERIOD_MS          ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
 126 #define portNOP()                   __asm volatile ( " NOP" )
 127 /*-----------------------------------------------------------*/
 128
 129 /* Task function macros as described on the FreeRTOS.org WEB site. */
 130 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 131 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 132
 133 extern void vTaskSwitchContext( void );
 134 #define portYIELD_FROM_ISR( x ) do { if( x ) vPortYield(); } while( 0 )
 135
 136 void vApplicationSetupTimerInterrupt( void );
 137
 138 /* sizeof( int ) != sizeof( long ) so a full printf() library is required if
 139 run time stats information is to be displayed. */
 140 #define portLU_PRINTF_SPECIFIER_REQUIRED
 141
 142 #endif /* PORTMACRO_H */