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1 /*\r
2     FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.\r
3 \r
4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
5 \r
6     ***************************************************************************\r
7      *                                                                       *\r
8      *    FreeRTOS provides completely free yet professionally developed,    *\r
9      *    robust, strictly quality controlled, supported, and cross          *\r
10      *    platform software that has become a de facto standard.             *\r
11      *                                                                       *\r
12      *    Help yourself get started quickly and support the FreeRTOS         *\r
13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
15      *                                                                       *\r
16      *    Thank you!                                                         *\r
17      *                                                                       *\r
18     ***************************************************************************\r
19 \r
20     This file is part of the FreeRTOS distribution.\r
21 \r
22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
23     the terms of the GNU General Public License (version 2) as published by the\r
24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
25 \r
26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
28     >>! the source code for proprietary components outside of the FreeRTOS\r
29     >>! kernel.\r
30 \r
31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
34     link: http://www.freertos.org/a00114.html\r
35 \r
36     1 tab == 4 spaces!\r
37 \r
38     ***************************************************************************\r
39      *                                                                       *\r
40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
41      *    not run, what could be wrong?"                                     *\r
42      *                                                                       *\r
43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
44      *                                                                       *\r
45     ***************************************************************************\r
46 \r
47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
48     license and Real Time Engineers Ltd. contact details.\r
49 \r
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53 \r
54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
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57 \r
58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
59     engineered and independently SIL3 certified version for use in safety and\r
60     mission critical applications that require provable dependability.\r
61 \r
62     1 tab == 4 spaces!\r
63 */\r
64 \r
65 #ifndef PORTMACRO_H\r
66 #define PORTMACRO_H\r
67 \r
68 #ifdef __cplusplus\r
69 extern "C" {\r
70 #endif\r
71 \r
72 /*-----------------------------------------------------------\r
73  * Port specific definitions.\r
74  *\r
75  * The settings in this file configure FreeRTOS correctly for the\r
76  * given hardware and compiler.\r
77  *\r
78  * These settings should not be altered.\r
79  *-----------------------------------------------------------\r
80  */\r
81 \r
82 /* Type definitions. */\r
83 #define portCHAR        char\r
84 #define portFLOAT       float\r
85 #define portDOUBLE      double\r
86 #define portLONG        long\r
87 #define portSHORT       short\r
88 #define portSTACK_TYPE  unsigned int\r
89 #define portBASE_TYPE   int\r
90 \r
91 \r
92 #if (configUSE_16_BIT_TICKS==1)\r
93         typedef unsigned portSHORT portTickType;\r
94         #define portMAX_DELAY ( portTickType ) 0xffff\r
95 #else\r
96         typedef unsigned portLONG portTickType;\r
97         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
98 #endif\r
99 /*-----------------------------------------------------------*/ \r
100 \r
101 /* Interrupt control macros. */\r
102 #define portDISABLE_INTERRUPTS() __asm ( "DI" )\r
103 #define portENABLE_INTERRUPTS()  __asm ( "EI" )\r
104 /*-----------------------------------------------------------*/\r
105 \r
106 /* Critical section control macros. */\r
107 #define portNO_CRITICAL_SECTION_NESTING         ( ( unsigned portBASE_TYPE ) 0 )\r
108 \r
109 #define portENTER_CRITICAL()                                                                                                            \\r
110 {                                                                                                                                                                       \\r
111 extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting;                        \\r
112                                                                                                                                                                         \\r
113         portDISABLE_INTERRUPTS();                                                                                                               \\r
114                                                                                                                                                                         \\r
115         /* Now interrupts are disabled ulCriticalNesting can be accessed */                             \\r
116         /* directly.  Increment ulCriticalNesting to keep a count of how many */                \\r
117         /* times portENTER_CRITICAL() has been called. */                                                               \\r
118         usCriticalNesting++;                                                                                                                    \\r
119 }\r
120 \r
121 #define portEXIT_CRITICAL()                                                                                                                     \\r
122 {                                                                                                                                                                       \\r
123 extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting;                        \\r
124                                                                                                                                                                         \\r
125         if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                                               \\r
126         {                                                                                                                                                               \\r
127                 /* Decrement the nesting count as we are leaving a critical section. */         \\r
128                 usCriticalNesting--;                                                                                                            \\r
129                                                                                                                                                                         \\r
130                 /* If the nesting level has reached zero then interrupts should be */           \\r
131                 /* re-enabled. */                                                                                                                       \\r
132                 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )                                      \\r
133                 {                                                                                                                                                       \\r
134                         portENABLE_INTERRUPTS();                                                                                                \\r
135                 }                                                                                                                                                       \\r
136         }                                                                                                                                                               \\r
137 }\r
138 /*-----------------------------------------------------------*/\r
139 \r
140 /* Task utilities. */\r
141 extern void vPortYield( void );\r
142 extern void vPortStart( void );\r
143 extern void portSAVE_CONTEXT( void );\r
144 extern void portRESTORE_CONTEXT( void );\r
145 #define portYIELD()     __asm ( "trap 0" )\r
146 #define portNOP()       __asm ( "NOP" )\r
147 extern void vTaskSwitchContext( void );\r
148 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken ) vTaskSwitchContext()\r
149 \r
150 /*-----------------------------------------------------------*/\r
151 \r
152 /* Hardwware specifics. */\r
153 #define portBYTE_ALIGNMENT      4\r
154 #define portSTACK_GROWTH        ( -1 )\r
155 #define portTICK_RATE_MS        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
156 /*-----------------------------------------------------------*/\r
157 \r
158 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
159 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
160 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
161 \r
162 \r
163 #ifdef __cplusplus\r
164 }\r
165 #endif\r
166 \r
167 #endif /* PORTMACRO_H */\r
168 \r