2 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
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:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
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.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
37 /*-----------------------------------------------------------
38 * Port specific definitions.
40 * The settings in this file configure FreeRTOS correctly for the
41 * given hardware and compiler.
43 * These settings should not be altered.
44 *-----------------------------------------------------------
47 /* Type definitions. */
49 #define portFLOAT float
50 #define portDOUBLE double
52 #define portSHORT short
53 #define portSTACK_TYPE uint32_t
54 #define portBASE_TYPE long
56 typedef portSTACK_TYPE StackType_t;
57 typedef long BaseType_t;
58 typedef unsigned long UBaseType_t;
60 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
61 typedef uint16_t TickType_t;
62 #define portMAX_DELAY ( TickType_t ) 0xffff
63 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
64 typedef uint32_t TickType_t;
65 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
67 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
68 * not need to be guarded with a critical section. */
69 #define portTICK_TYPE_IS_ATOMIC 1
71 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
73 /*-----------------------------------------------------------*/
75 /* Architecture specifics. */
76 #define portSTACK_GROWTH ( -1 )
77 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
78 #define portBYTE_ALIGNMENT 8
79 #define portDONT_DISCARD __attribute__( ( used ) )
80 /*-----------------------------------------------------------*/
83 /* Scheduler utilities. */
84 extern void vPortYield( void );
85 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
86 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
87 #define portYIELD() vPortYield()
88 #define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; } while( 0 )
89 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
90 /*-----------------------------------------------------------*/
93 /* Critical section management. */
94 extern void vPortEnterCritical( void );
95 extern void vPortExitCritical( void );
96 extern uint32_t ulSetInterruptMaskFromISR( void ) __attribute__( ( naked ) );
97 extern void vClearInterruptMaskFromISR( uint32_t ulMask ) __attribute__( ( naked ) );
99 #define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
100 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMaskFromISR( x )
101 #define portDISABLE_INTERRUPTS() __asm volatile ( " cpsid i " ::: "memory" )
102 #define portENABLE_INTERRUPTS() __asm volatile ( " cpsie i " ::: "memory" )
103 #define portENTER_CRITICAL() vPortEnterCritical()
104 #define portEXIT_CRITICAL() vPortExitCritical()
106 /*-----------------------------------------------------------*/
108 /* Tickless idle/low power functionality. */
109 #ifndef portSUPPRESS_TICKS_AND_SLEEP
110 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
111 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
113 /*-----------------------------------------------------------*/
115 /* Task function macros as described on the FreeRTOS.org WEB site. */
116 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
117 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
121 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
127 #endif /* PORTMACRO_H */