2 FreeRTOS V8.2.0 - Copyright (C) 2015 Real Time Engineers Ltd.
5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
7 This file is part of the FreeRTOS distribution.
9 FreeRTOS is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License (version 2) as published by the
11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
13 ***************************************************************************
14 >>! NOTE: The modification to the GPL is included to allow you to !<<
15 >>! distribute a combined work that includes FreeRTOS without being !<<
16 >>! obliged to provide the source code for proprietary components !<<
17 >>! outside of the FreeRTOS kernel. !<<
18 ***************************************************************************
20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
23 link: http://www.freertos.org/a00114.html
25 ***************************************************************************
27 * FreeRTOS provides completely free yet professionally developed, *
28 * robust, strictly quality controlled, supported, and cross *
29 * platform software that is more than just the market leader, it *
30 * is the industry's de facto standard. *
32 * Help yourself get started quickly while simultaneously helping *
33 * to support the FreeRTOS project by purchasing a FreeRTOS *
34 * tutorial book, reference manual, or both: *
35 * http://www.FreeRTOS.org/Documentation *
37 ***************************************************************************
39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
40 the FAQ page "My application does not run, what could be wrong?". Have you
41 defined configASSERT()?
43 http://www.FreeRTOS.org/support - In return for receiving this top quality
44 embedded software for free we request you assist our global community by
45 participating in the support forum.
47 http://www.FreeRTOS.org/training - Investing in training allows your team to
48 be as productive as possible as early as possible. Now you can receive
49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
50 Ltd, and the world's leading authority on the world's leading RTOS.
52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
61 licenses offer ticketed support, indemnification and commercial middleware.
63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
64 engineered and independently SIL3 certified version for use in safety and
65 mission critical applications that require provable dependability.
70 /*-----------------------------------------------------------
71 * Portable layer API. Each function must be defined for each port.
72 *----------------------------------------------------------*/
77 /* Each FreeRTOS port has a unique portmacro.h header file. Originally a
78 pre-processor definition was used to ensure the pre-processor found the correct
79 portmacro.h file for the port being used. That scheme was deprecated in favour
80 of setting the compiler's include path such that it found the correct
81 portmacro.h file - removing the need for the constant and allowing the
82 portmacro.h file to be located anywhere in relation to the port being used.
83 Purely for reasons of backward compatibility the old method is still valid, but
84 to make it clear that new projects should not use it, support for the port
85 specific constants has been moved into the deprecated_definitions.h header
87 #include "deprecated_definitions.h"
89 /* If portENTER_CRITICAL is not defined then including deprecated_definitions.h
90 did not result in a portmacro.h header file being included - and it should be
91 included here. In this case the path to the correct portmacro.h header file
92 must be set in the compiler's include path. */
93 #ifndef portENTER_CRITICAL
94 #include "portmacro.h"
97 #if portBYTE_ALIGNMENT == 8
98 #define portBYTE_ALIGNMENT_MASK ( 0x0007U )
101 #if portBYTE_ALIGNMENT == 4
102 #define portBYTE_ALIGNMENT_MASK ( 0x0003 )
105 #if portBYTE_ALIGNMENT == 2
106 #define portBYTE_ALIGNMENT_MASK ( 0x0001 )
109 #if portBYTE_ALIGNMENT == 1
110 #define portBYTE_ALIGNMENT_MASK ( 0x0000 )
113 #ifndef portBYTE_ALIGNMENT_MASK
114 #error "Invalid portBYTE_ALIGNMENT definition"
117 #ifndef portNUM_CONFIGURABLE_REGIONS
118 #define portNUM_CONFIGURABLE_REGIONS 1
125 #include "mpu_wrappers.h"
128 * Setup the stack of a new task so it is ready to be placed under the
129 * scheduler control. The registers have to be placed on the stack in
130 * the order that the port expects to find them.
133 #if( portUSING_MPU_WRAPPERS == 1 )
134 StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters, BaseType_t xRunPrivileged ) PRIVILEGED_FUNCTION;
136 StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters ) PRIVILEGED_FUNCTION;
139 /* Used by heap_5.c. */
140 typedef struct HeapRegion
142 uint8_t *pucStartAddress;
147 * Used to define multiple heap regions for use by heap_5.c. This function
148 * must be called before any calls to pvPortMalloc() - not creating a task,
149 * queue, semaphore, mutex, software timer, event group, etc. will result in
150 * pvPortMalloc being called.
152 * pxHeapRegions passes in an array of HeapRegion_t structures - each of which
153 * defines a region of memory that can be used as the heap. The array is
154 * terminated by a HeapRegions_t structure that has a size of 0. The region
155 * with the lowest start address must appear first in the array.
157 void vPortDefineHeapRegions( const HeapRegion_t * const pxHeapRegions );
161 * Map to the memory management routines required for the port.
163 void *pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
164 void vPortFree( void *pv ) PRIVILEGED_FUNCTION;
165 void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
166 size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;
167 size_t xPortGetMinimumEverFreeHeapSize( void ) PRIVILEGED_FUNCTION;
170 * Setup the hardware ready for the scheduler to take control. This generally
171 * sets up a tick interrupt and sets timers for the correct tick frequency.
173 BaseType_t xPortStartScheduler( void ) PRIVILEGED_FUNCTION;
176 * Undo any hardware/ISR setup that was performed by xPortStartScheduler() so
177 * the hardware is left in its original condition after the scheduler stops
180 void vPortEndScheduler( void ) PRIVILEGED_FUNCTION;
184 * Send an interrupt to another core in order to make the task running
185 * on it yield for a higher-priority task.
188 void vPortYieldOtherCore( BaseType_t coreid) PRIVILEGED_FUNCTION;
192 Callback to set a watchpoint on the end of the stack. Called every context switch to change the stack
195 void vPortSetStackWatchpoint( void* pxStackStart );
198 * Returns true if the current core is in ISR context; low prio ISR, med prio ISR or timer tick ISR. High prio ISRs
199 * aren't detected here, but they normally cannot call C code, so that should not be an issue anyway.
201 BaseType_t xPortInIsrContext();
204 * The structures and methods of manipulating the MPU are contained within the
207 * Fills the xMPUSettings structure with the memory region information
208 * contained in xRegions.
210 #if( portUSING_MPU_WRAPPERS == 1 )
211 struct xMEMORY_REGION;
212 void vPortStoreTaskMPUSettings( xMPU_SETTINGS *xMPUSettings, const struct xMEMORY_REGION * const xRegions, StackType_t *pxBottomOfStack, uint32_t usStackDepth ) PRIVILEGED_FUNCTION;
215 /* Multi-core: get current core ID */
216 static inline uint32_t xPortGetCoreID() {
225 /* Get tick rate per second */
226 uint32_t xPortGetTickRateHz(void);
232 #endif /* PORTABLE_H */