2 * FreeRTOS Kernel V10.5.1
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
37 /*-----------------------------------------------------------
38 * Port specific definitions.
40 * The settings in this file configure FreeRTOS correctly for the
41 * given hardware and compiler.
43 * These settings should not be altered.
44 *-----------------------------------------------------------
48 #include <intrinsics.h>
50 /* Type definitions. */
52 #define portFLOAT float
53 #define portDOUBLE double
55 #define portSHORT short
56 #define portSTACK_TYPE uint32_t
57 #define portBASE_TYPE long
59 typedef portSTACK_TYPE StackType_t;
60 typedef long BaseType_t;
61 typedef unsigned long UBaseType_t;
63 #if ( configUSE_16_BIT_TICKS == 1 )
64 typedef uint16_t TickType_t;
65 #define portMAX_DELAY ( TickType_t ) 0xffff
67 typedef uint32_t TickType_t;
68 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
70 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
71 * not need to be guarded with a critical section. */
72 #define portTICK_TYPE_IS_ATOMIC 1
74 /*-----------------------------------------------------------*/
76 /* Architecture specifics. */
77 #define portSTACK_GROWTH ( -1 )
78 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
79 #define portBYTE_ALIGNMENT 8
80 /*-----------------------------------------------------------*/
82 /* Compiler directives. */
83 #define portWEAK_SYMBOL __attribute__( ( weak ) )
85 /*-----------------------------------------------------------*/
88 /* Scheduler utilities. */
91 /* Set a PendSV to request a context switch. */ \
92 portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; \
97 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
98 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
99 #define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired != pdFALSE ) portYIELD(); } while( 0 )
100 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
102 /*-----------------------------------------------------------*/
104 /* Architecture specific optimisations. */
105 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
106 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
109 #if ( configUSE_PORT_OPTIMISED_TASK_SELECTION == 1 )
111 /* Check the configuration. */
112 #if ( configMAX_PRIORITIES > 32 )
113 #error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
116 /* Store/clear the ready priorities in a bit map. */
117 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
118 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
120 /*-----------------------------------------------------------*/
122 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( ( uint32_t ) __CLZ( ( uxReadyPriorities ) ) ) )
124 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
125 /*-----------------------------------------------------------*/
127 /* Critical section management. */
128 extern void vPortEnterCritical( void );
129 extern void vPortExitCritical( void );
131 #define portDISABLE_INTERRUPTS() \
133 __set_BASEPRI( configMAX_SYSCALL_INTERRUPT_PRIORITY ); \
138 #define portENABLE_INTERRUPTS() __set_BASEPRI( 0 )
139 #define portENTER_CRITICAL() vPortEnterCritical()
140 #define portEXIT_CRITICAL() vPortExitCritical()
141 #define portSET_INTERRUPT_MASK_FROM_ISR() __get_BASEPRI(); portDISABLE_INTERRUPTS()
142 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) __set_BASEPRI( x )
143 /*-----------------------------------------------------------*/
145 /* Tickless idle/low power functionality. */
146 #ifndef portSUPPRESS_TICKS_AND_SLEEP
147 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
148 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
151 /*-----------------------------------------------------------*/
153 /* Task function macros as described on the FreeRTOS.org WEB site. These are
154 * not necessary for to use this port. They are defined so the common demo files
155 * (which build with all the ports) will build. */
156 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
157 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
158 /*-----------------------------------------------------------*/
161 void vPortValidateInterruptPriority( void );
162 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
165 /* portNOP() is not required by this port. */
168 #define portINLINE __inline
170 #ifndef portFORCE_INLINE
171 #define portFORCE_INLINE inline __attribute__( ( always_inline ) )
174 /*-----------------------------------------------------------*/
176 portFORCE_INLINE static BaseType_t xPortIsInsideInterrupt( void )
178 uint32_t ulCurrentInterrupt;
181 /* Obtain the number of the currently executing interrupt. */
182 __asm volatile ( "mrs %0, ipsr" : "=r" ( ulCurrentInterrupt )::"memory" );
184 if( ulCurrentInterrupt == 0 )
196 /*-----------------------------------------------------------*/
198 /* Suppress warnings that are generated by the IAR tools, but cannot be fixed in
199 * the source code because to do so would cause other compilers to generate
201 #pragma diag_suppress=Pe191
202 #pragma diag_suppress=Pa082
208 #endif /* PORTMACRO_H */