2 FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
\r
5 ***************************************************************************
\r
7 * FreeRTOS tutorial books are available in pdf and paperback. *
\r
8 * Complete, revised, and edited pdf reference manuals are also *
\r
11 * Purchasing FreeRTOS documentation will not only help you, by *
\r
12 * ensuring you get running as quickly as possible and with an *
\r
13 * in-depth knowledge of how to use FreeRTOS, it will also help *
\r
14 * the FreeRTOS project to continue with its mission of providing *
\r
15 * professional grade, cross platform, de facto standard solutions *
\r
16 * for microcontrollers - completely free of charge! *
\r
18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
\r
20 * Thank you for using FreeRTOS, and thank you for your support! *
\r
22 ***************************************************************************
\r
25 This file is part of the FreeRTOS distribution.
\r
27 FreeRTOS is free software; you can redistribute it and/or modify it under
\r
28 the terms of the GNU General Public License (version 2) as published by the
\r
29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
\r
30 >>>NOTE<<< The modification to the GPL is included to allow you to
\r
31 distribute a combined work that includes FreeRTOS without being obliged to
\r
32 provide the source code for proprietary components outside of the FreeRTOS
\r
33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
\r
34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
\r
35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
\r
36 more details. You should have received a copy of the GNU General Public
\r
37 License and the FreeRTOS license exception along with FreeRTOS; if not it
\r
38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
\r
39 by writing to Richard Barry, contact details for whom are available on the
\r
44 http://www.FreeRTOS.org - Documentation, latest information, license and
\r
47 http://www.SafeRTOS.com - A version that is certified for use in safety
\r
50 http://www.OpenRTOS.com - Commercial support, development, porting,
\r
51 licensing and training services.
\r
62 /*-----------------------------------------------------------
\r
63 * Port specific definitions.
\r
65 * The settings in this file configure FreeRTOS correctly for the
\r
66 * given hardware and compiler.
\r
68 * These settings should not be altered.
\r
69 *-----------------------------------------------------------
\r
72 /* Type definitions. */
\r
73 #define portCHAR char
\r
74 #define portFLOAT float
\r
75 #define portDOUBLE double
\r
76 #define portLONG long
\r
77 #define portSHORT short
\r
78 #define portSTACK_TYPE unsigned portLONG
\r
79 #define portBASE_TYPE portLONG
\r
81 #if( configUSE_16_BIT_TICKS == 1 )
\r
82 typedef unsigned portSHORT portTickType;
\r
83 #define portMAX_DELAY ( portTickType ) 0xffff
\r
85 typedef unsigned portLONG portTickType;
\r
86 #define portMAX_DELAY ( portTickType ) 0xffffffff
\r
88 /*-----------------------------------------------------------*/
\r
90 /* Hardware specifics. */
\r
91 #define portSTACK_GROWTH ( -1 )
\r
92 #define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
\r
93 #define portBYTE_ALIGNMENT 8
\r
94 #define portYIELD() asm volatile ( "SWI 0" )
\r
95 #define portNOP() asm volatile ( "NOP" )
\r
96 /*-----------------------------------------------------------*/
\r
98 /* Critical section handling. */
\r
100 * The interrupt management utilities can only be called from ARM mode. When
\r
101 * THUMB_INTERWORK is defined the utilities are defined as functions in
\r
102 * portISR.c to ensure a switch to ARM mode. When THUMB_INTERWORK is not
\r
103 * defined then the utilities are defined as macros here - as per other ports.
\r
106 #ifdef THUMB_INTERWORK
\r
108 extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));
\r
109 extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));
\r
111 #define portDISABLE_INTERRUPTS() vPortDisableInterruptsFromThumb()
\r
112 #define portENABLE_INTERRUPTS() vPortEnableInterruptsFromThumb()
\r
116 #define portDISABLE_INTERRUPTS() \
\r
118 "STMDB SP!, {R0} \n\t" /* Push R0. */ \
\r
119 "MRS R0, CPSR \n\t" /* Get CPSR. */ \
\r
120 "ORR R0, R0, #0xC0 \n\t" /* Disable IRQ, FIQ. */ \
\r
121 "MSR CPSR, R0 \n\t" /* Write back modified value. */ \
\r
122 "LDMIA SP!, {R0} " ) /* Pop R0. */
\r
124 #define portENABLE_INTERRUPTS() \
\r
126 "STMDB SP!, {R0} \n\t" /* Push R0. */ \
\r
127 "MRS R0, CPSR \n\t" /* Get CPSR. */ \
\r
128 "BIC R0, R0, #0xC0 \n\t" /* Enable IRQ, FIQ. */ \
\r
129 "MSR CPSR, R0 \n\t" /* Write back modified value. */ \
\r
130 "LDMIA SP!, {R0} " ) /* Pop R0. */
\r
132 #endif /* THUMB_INTERWORK */
\r
134 extern void vPortEnterCritical( void );
\r
135 extern void vPortExitCritical( void );
\r
137 #define portENTER_CRITICAL() vPortEnterCritical();
\r
138 #define portEXIT_CRITICAL() vPortExitCritical();
\r
139 /*-----------------------------------------------------------*/
\r
141 /* Task utilities. */
\r
142 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
\r
144 extern void vTaskSwitchContext( void ); \
\r
146 if( xSwitchRequired ) \
\r
148 vTaskSwitchContext(); \
\r
151 /*-----------------------------------------------------------*/
\r
153 /* Task function macros as described on the FreeRTOS.org WEB site. */
\r
154 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
\r
155 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
\r
161 #endif /* PORTMACRO_H */
\r