xref: /Kernel-v10.6.2/portable/Rowley/MSP430F449/portmacro.h (revision ef7b253b56c9788077f5ecd6c9deb4021923d646) 
1 /*
2  * FreeRTOS Kernel V10.6.2
3  * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
4  *
5  * SPDX-License-Identifier: MIT
6  *
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:
13  *
14  * The above copyright notice and this permission notice shall be included in all
15  * copies or substantial portions of the Software.
16  *
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.
23  *
24  * https://www.FreeRTOS.org
25  * https://github.com/FreeRTOS
26  *
27  */
28 
29 #ifndef PORTMACRO_H
30 #define PORTMACRO_H
31 
32 /*-----------------------------------------------------------
33  * Port specific definitions.
34  *
35  * The settings in this file configure FreeRTOS correctly for the
36  * given hardware and compiler.
37  *
38  * These settings should not be altered.
39  *-----------------------------------------------------------
40  */
41 
42 /* Type definitions. */
43 #define portCHAR        char
44 #define portFLOAT       float
45 #define portDOUBLE      double
46 #define portLONG        long
47 #define portSHORT       int
48 #define portSTACK_TYPE  uint16_t
49 #define portBASE_TYPE   short
50 
51 typedef portSTACK_TYPE StackType_t;
52 typedef short BaseType_t;
53 typedef unsigned short UBaseType_t;
54 
55 
56 #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
57     typedef uint16_t TickType_t;
58     #define portMAX_DELAY ( TickType_t ) 0xffff
59 #elif ( configTICK_TYPE_WIDTH_IN_BITS  == TICK_TYPE_WIDTH_32_BITS )
60     typedef uint32_t             TickType_t;
61     #define portMAX_DELAY    ( TickType_t ) 0xffffffffUL
62 #else
63     #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
64 #endif
65 
66 /*-----------------------------------------------------------*/
67 
68 /* Interrupt control macros. */
69 #define portDISABLE_INTERRUPTS()    _DINT(); _NOP()
70 #define portENABLE_INTERRUPTS()     _EINT();
71 /*-----------------------------------------------------------*/
72 
73 /* Critical section control macros. */
74 #define portNO_CRITICAL_SECTION_NESTING     ( ( uint16_t ) 0 )
75 
76 #define portENTER_CRITICAL()                                                    \
77 {                                                                               \
78 extern volatile uint16_t usCriticalNesting;                         \
79                                                                                 \
80     portDISABLE_INTERRUPTS();                                                   \
81                                                                                 \
82     /* Now interrupts are disabled usCriticalNesting can be accessed */         \
83     /* directly.  Increment ulCriticalNesting to keep a count of how many */    \
84     /* times portENTER_CRITICAL() has been called. */                           \
85     usCriticalNesting++;                                                        \
86 }
87 
88 #define portEXIT_CRITICAL()                                                     \
89 {                                                                               \
90 extern volatile uint16_t usCriticalNesting;                         \
91                                                                                 \
92     if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )                   \
93     {                                                                           \
94         /* Decrement the nesting count as we are leaving a critical section. */ \
95         usCriticalNesting--;                                                    \
96                                                                                 \
97         /* If the nesting level has reached zero then interrupts should be */   \
98         /* re-enabled. */                                                       \
99         if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )              \
100         {                                                                       \
101             portENABLE_INTERRUPTS();                                            \
102         }                                                                       \
103     }                                                                           \
104 }
105 /*-----------------------------------------------------------*/
106 
107 /* Task utilities. */
108 
109 /*
110  * Manual context switch called by portYIELD or taskYIELD.
111  */
112 extern void vPortYield( void );
113 #define portYIELD() vPortYield()
114 /*-----------------------------------------------------------*/
115 
116 /* Hardware specifics. */
117 #define portBYTE_ALIGNMENT          2
118 #define portSTACK_GROWTH            ( -1 )
119 #define portTICK_PERIOD_MS          ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
120 #define portNOP()
121 /*-----------------------------------------------------------*/
122 
123 /* Task function macros as described on the FreeRTOS.org WEB site. */
124 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
125 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
126 
127 #if configINTERRUPT_EXAMPLE_METHOD == 2
128 
129 extern void vTaskSwitchContext( void );
130 #define portYIELD_FROM_ISR( x ) do { if( x ) vTaskSwitchContext(); } while( 0 )
131 
132 #endif
133 
134 #endif /* PORTMACRO_H */
135