portmacro.h 6.6 KB

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  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. #ifndef PORTMACRO_H
  29. #define PORTMACRO_H
  30. /* *INDENT-OFF* */
  31. #ifdef __cplusplus
  32. extern "C" {
  33. #endif
  34. /* *INDENT-ON* */
  35. /*-----------------------------------------------------------
  36. * Port specific definitions.
  37. *
  38. * The settings in this file configure FreeRTOS correctly for the
  39. * given hardware and compiler.
  40. *
  41. * These settings should not be altered.
  42. *-----------------------------------------------------------
  43. */
  44. /* When the FIT configurator or the Smart Configurator is used, platform.h has to be
  45. * used. */
  46. #ifndef configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H
  47. #define configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H 0
  48. #endif
  49. /* Type definitions - these are a bit legacy and not really used now, other than
  50. * portSTACK_TYPE and portBASE_TYPE. */
  51. #define portCHAR char
  52. #define portFLOAT float
  53. #define portDOUBLE double
  54. #define portLONG long
  55. #define portSHORT short
  56. #define portSTACK_TYPE uint32_t
  57. #define portBASE_TYPE long
  58. typedef portSTACK_TYPE StackType_t;
  59. typedef long BaseType_t;
  60. typedef unsigned long UBaseType_t;
  61. #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
  62. typedef uint16_t TickType_t;
  63. #define portMAX_DELAY ( TickType_t ) 0xffff
  64. #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
  65. typedef uint32_t TickType_t;
  66. #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
  67. /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
  68. * not need to be guarded with a critical section. */
  69. #define portTICK_TYPE_IS_ATOMIC 1
  70. #else
  71. #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
  72. #endif
  73. /*-----------------------------------------------------------*/
  74. /* Hardware specifics. */
  75. #define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
  76. #define portSTACK_GROWTH -1
  77. #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
  78. #define portNOP() __asm volatile ( "NOP" )
  79. /* Yield equivalent to "*portITU_SWINTR = 0x01; ( void ) *portITU_SWINTR;"
  80. * where portITU_SWINTR is the location of the software interrupt register
  81. * (0x000872E0). Don't rely on the assembler to select a register, so instead
  82. * save and restore clobbered registers manually. */
  83. #define portYIELD() \
  84. __asm volatile \
  85. ( \
  86. "PUSH.L R10 \n" \
  87. "MOV.L #0x872E0, R10 \n" \
  88. "MOV.B #0x1, [R10] \n" \
  89. "MOV.L [R10], R10 \n" \
  90. "POP R10 \n" \
  91. )
  92. #define portYIELD_FROM_ISR( x ) do { if( x != pdFALSE ) portYIELD( ); } while( 0 )
  93. /* These macros should not be called directly, but through the
  94. * taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
  95. * performed if configASSERT() is defined to ensure an assertion handler does not
  96. * inadvertently attempt to lower the IPL when the call to assert was triggered
  97. * because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
  98. * when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
  99. * functions are those that end in FromISR. FreeRTOS maintains a separate
  100. * interrupt API to ensure API function and interrupt entry is as fast and as
  101. * simple as possible. */
  102. #define portENABLE_INTERRUPTS() __asm volatile ( "MVTIPL #0" )
  103. #if ( configASSERT_DEFINED == 1 )
  104. #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( ulPortGetIPL() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
  105. #define portDISABLE_INTERRUPTS() if( ulPortGetIPL() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) __asm volatile( "MVTIPL %0" ::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
  106. #else
  107. #define portDISABLE_INTERRUPTS() __asm volatile ( "MVTIPL %0" ::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
  108. #endif
  109. /* Critical nesting counts are stored in the TCB. */
  110. #define portCRITICAL_NESTING_IN_TCB ( 1 )
  111. /* The critical nesting functions defined within tasks.c. */
  112. extern void vTaskEnterCritical( void );
  113. extern void vTaskExitCritical( void );
  114. #define portENTER_CRITICAL() vTaskEnterCritical()
  115. #define portEXIT_CRITICAL() vTaskExitCritical()
  116. /* As this port allows interrupt nesting... */
  117. uint32_t ulPortGetIPL( void ) __attribute__( ( naked ) );
  118. void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
  119. #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortGetIPL(); portDISABLE_INTERRUPTS()
  120. #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) vPortSetIPL( uxSavedInterruptStatus )
  121. /*-----------------------------------------------------------*/
  122. /* Task function macros as described on the FreeRTOS.org WEB site. */
  123. #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
  124. #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
  125. #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
  126. /* *INDENT-OFF* */
  127. #ifdef __cplusplus
  128. }
  129. #endif
  130. /* *INDENT-ON* */
  131. #endif /* PORTMACRO_H */