1 /*
2  * FreeRTOS Kernel V11.1.0
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 /* *INDENT-OFF* */
33 #ifdef __cplusplus
34     extern "C" {
35 #endif
36 /* *INDENT-ON* */
37 
38 /*-----------------------------------------------------------
39  * Port specific definitions.
40  *
41  * The settings in this file configure FreeRTOS correctly for the
42  * given hardware and compiler.
43  *
44  * These settings should not be altered.
45  *-----------------------------------------------------------
46  */
47 
48 /* Type definitions. */
49 #define portCHAR        char
50 #define portFLOAT       float
51 #define portDOUBLE      double
52 #define portLONG        long
53 #define portSHORT       short
54 #define portSTACK_TYPE  uint32_t
55 #define portBASE_TYPE   long
56 
57 typedef portSTACK_TYPE StackType_t;
58 typedef long BaseType_t;
59 typedef unsigned long UBaseType_t;
60 
61 
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 )
68 #else
69     #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
70 #endif
71 /*-----------------------------------------------------------*/
72 
73 /* Hardware specifics. */
74 #define portBYTE_ALIGNMENT          4
75 #define portSTACK_GROWTH            -1
76 #define portTICK_PERIOD_MS          ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
77 /*-----------------------------------------------------------*/
78 
79 uint32_t ulPortSetIPL( uint32_t );
80 #define portDISABLE_INTERRUPTS()    ulPortSetIPL( configMAX_SYSCALL_INTERRUPT_PRIORITY )
81 #define portENABLE_INTERRUPTS()     ulPortSetIPL( 0 )
82 
83 
84 extern void vPortEnterCritical( void );
85 extern void vPortExitCritical( void );
86 #define portENTER_CRITICAL()        vPortEnterCritical()
87 #define portEXIT_CRITICAL()         vPortExitCritical()
88 
89 extern UBaseType_t uxPortSetInterruptMaskFromISR( void );
90 extern void vPortClearInterruptMaskFromISR( UBaseType_t );
91 #define portSET_INTERRUPT_MASK_FROM_ISR()   ulPortSetIPL( configMAX_SYSCALL_INTERRUPT_PRIORITY )
92 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) ulPortSetIPL( uxSavedStatusRegister )
93 
94 /*-----------------------------------------------------------*/
95 
96 /* Task utilities. */
97 #define portNOP()   asm volatile ( "nop" )
98 
99 /* Context switches are requested using the force register. */
100 #define portYIELD() INTC_SFRC = 0x3E; portNOP(); portNOP(); portNOP(); portNOP(); portNOP()
101 
102 /*-----------------------------------------------------------*/
103 
104 /* Task function macros as described on the FreeRTOS.org WEB site. */
105 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __attribute__((noreturn))
106 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
107 /*-----------------------------------------------------------*/
108 
109 
110 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
111     do                                           \
112     {                                            \
113         if( xSwitchRequired != pdFALSE )         \
114         {                                        \
115             traceISR_EXIT_TO_SCHEDULER();        \
116             portYIELD();                         \
117         }                                        \
118         else                                     \
119         {                                        \
120             traceISR_EXIT();                     \
121         }                                        \
122     } while( 0 )
123 
124 /* *INDENT-OFF* */
125 #ifdef __cplusplus
126     }
127 #endif
128 /* *INDENT-ON* */
129 
130 #endif /* PORTMACRO_H */
131