2 * FreeRTOS Kernel V11.2.0
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
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:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
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.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
38 /*-----------------------------------------------------------
39 * Port specific definitions.
41 * The settings in this file configure FreeRTOS correctly for the given hardware
44 * These settings should not be altered.
45 *-----------------------------------------------------------
48 /* Type definitions. */
50 #define portFLOAT float
51 #define portDOUBLE double
53 #define portSHORT short
54 #define portSTACK_TYPE uint32_t
55 #define portBASE_TYPE long
57 typedef portSTACK_TYPE StackType_t;
58 typedef long BaseType_t;
59 typedef unsigned long UBaseType_t;
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
69 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
70 * not need to be guarded with a critical section. */
71 #define portTICK_TYPE_IS_ATOMIC 1
73 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
75 /*-----------------------------------------------------------*/
77 /* Hardware specifics. */
78 #define portSTACK_GROWTH ( -1 )
79 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
80 #define portBYTE_ALIGNMENT 8
82 /*-----------------------------------------------------------*/
86 /* Called at the end of an ISR that can cause a context switch. */
87 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
89 extern uint32_t ulPortYieldRequired; \
91 if( xSwitchRequired != pdFALSE ) \
93 ulPortYieldRequired = pdTRUE; \
97 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
98 #define portYIELD() __asm( "SWI 0" );
101 /*-----------------------------------------------------------
102 * Critical section control
103 *----------------------------------------------------------*/
105 extern void vPortEnterCritical( void );
106 extern void vPortExitCritical( void );
107 extern uint32_t ulPortSetInterruptMask( void );
108 extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );
110 /* These macros do not globally disable/enable interrupts. They do mask off
111 * interrupts that have a priority below configMAX_API_CALL_INTERRUPT_PRIORITY. */
112 #define portENTER_CRITICAL() vPortEnterCritical();
113 #define portEXIT_CRITICAL() vPortExitCritical();
114 #define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()
115 #define portENABLE_INTERRUPTS() vPortClearInterruptMask( 0 )
116 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
117 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vPortClearInterruptMask( x )
119 /*-----------------------------------------------------------*/
121 /* Task function macros as described on the FreeRTOS.org WEB site. These are
122 * not required for this port but included in case common demo code that uses these
124 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
125 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
127 /* Prototype of the FreeRTOS tick handler. This must be installed as the
128 * handler for whichever peripheral is used to generate the RTOS tick. */
129 void FreeRTOS_Tick_Handler( void );
131 /* Any task that uses the floating point unit MUST call vPortTaskUsesFPU()
132 * before any floating point instructions are executed. */
133 void vPortTaskUsesFPU( void );
134 #define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
136 #define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )
137 #define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL )
139 /* Architecture specific optimisations. */
140 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
141 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
144 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
146 /* Store/clear the ready priorities in a bit map. */
147 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
148 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
150 /*-----------------------------------------------------------*/
152 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - __clz( uxReadyPriorities ) )
154 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
156 #if ( configASSERT_DEFINED == 1 )
157 void vPortValidateInterruptPriority( void );
158 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
161 #define portNOP() __nop()
169 #endif /* PORTMACRO_H */