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
39 /*-----------------------------------------------------------
40 * Port specific definitions.
42 * The settings in this file configure FreeRTOS correctly for the
43 * given hardware and compiler.
45 * These settings should not be altered.
46 *-----------------------------------------------------------
49 /* Type definitions. */
51 #define portFLOAT float
52 #define portDOUBLE double
54 #define portSHORT short
55 #define portSTACK_TYPE uint32_t
56 #define portBASE_TYPE long
58 typedef portSTACK_TYPE StackType_t;
59 typedef long BaseType_t;
60 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 /* Architecture specifics. */
78 #define portSTACK_GROWTH ( -1 )
79 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
80 #define portBYTE_ALIGNMENT 8
82 /* Constants used with memory barrier intrinsics. */
83 #define portSY_FULL_READ_WRITE ( 15 )
85 /*-----------------------------------------------------------*/
87 /* Scheduler utilities. */
90 /* Set a PendSV to request a context switch. */ \
91 portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; \
93 /* Barriers are normally not required but do ensure the code is completely \
94 * within the specified behaviour for the architecture. */ \
95 __dsb( portSY_FULL_READ_WRITE ); \
96 __isb( portSY_FULL_READ_WRITE ); \
98 /*-----------------------------------------------------------*/
100 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
101 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
102 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
105 if( xSwitchRequired != pdFALSE ) \
107 traceISR_EXIT_TO_SCHEDULER(); \
115 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
116 /*-----------------------------------------------------------*/
118 /* Critical section management. */
119 extern void vPortEnterCritical( void );
120 extern void vPortExitCritical( void );
122 #define portDISABLE_INTERRUPTS() vPortRaiseBASEPRI()
123 #define portENABLE_INTERRUPTS() vPortSetBASEPRI( 0 )
124 #define portENTER_CRITICAL() vPortEnterCritical()
125 #define portEXIT_CRITICAL() vPortExitCritical()
126 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortRaiseBASEPRI()
127 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vPortSetBASEPRI( x )
129 /*-----------------------------------------------------------*/
131 /* Tickless idle/low power functionality. */
132 #ifndef portSUPPRESS_TICKS_AND_SLEEP
133 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
134 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
136 /*-----------------------------------------------------------*/
138 /* Port specific optimisations. */
139 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
140 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
143 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
145 /* Check the configuration. */
146 #if ( configMAX_PRIORITIES > 32 )
147 #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.
150 /* Store/clear the ready priorities in a bit map. */
151 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
152 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
154 /*-----------------------------------------------------------*/
156 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) __clz( ( uxReadyPriorities ) ) )
158 #endif /* taskRECORD_READY_PRIORITY */
159 /*-----------------------------------------------------------*/
161 /* Task function macros as described on the FreeRTOS.org WEB site. These are
162 * not necessary for to use this port. They are defined so the common demo files
163 * (which build with all the ports) will build. */
164 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
165 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
166 /*-----------------------------------------------------------*/
168 #if ( configASSERT_DEFINED == 1 )
169 void vPortValidateInterruptPriority( void );
170 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
173 /* portNOP() is not required by this port. */
176 #define portINLINE __inline
178 #ifndef portFORCE_INLINE
179 #define portFORCE_INLINE __forceinline
182 /*-----------------------------------------------------------*/
184 static portFORCE_INLINE void vPortSetBASEPRI( uint32_t ulBASEPRI )
188 /* Barrier instructions are not used as this function is only used to
189 * lower the BASEPRI value. */
191 msr basepri, ulBASEPRI
195 /*-----------------------------------------------------------*/
197 static portFORCE_INLINE void vPortRaiseBASEPRI( void )
199 uint32_t ulNewBASEPRI = configMAX_SYSCALL_INTERRUPT_PRIORITY;
203 /* Set BASEPRI to the max syscall priority to effect a critical
206 msr basepri, ulNewBASEPRI
212 /*-----------------------------------------------------------*/
214 static portFORCE_INLINE void vPortClearBASEPRIFromISR( void )
218 /* Set BASEPRI to 0 so no interrupts are masked. This function is only
219 * used to lower the mask in an interrupt, so memory barriers are not
226 /*-----------------------------------------------------------*/
228 static portFORCE_INLINE uint32_t ulPortRaiseBASEPRI( void )
230 uint32_t ulReturn, ulNewBASEPRI = configMAX_SYSCALL_INTERRUPT_PRIORITY;
234 /* Set BASEPRI to the max syscall priority to effect a critical
237 mrs ulReturn, basepri
238 msr basepri, ulNewBASEPRI
246 /*-----------------------------------------------------------*/
248 static portFORCE_INLINE BaseType_t xPortIsInsideInterrupt( void )
250 uint32_t ulCurrentInterrupt;
253 /* Obtain the number of the currently executing interrupt. */
257 mrs ulCurrentInterrupt, ipsr
261 if( ulCurrentInterrupt == 0 )
280 #endif /* PORTMACRO_H */