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
39 /*-----------------------------------------------------------
40 * Port specific definitions.
42 * The settings in this file configure FreeRTOS correctly for the
43 * given hardware and compiler.
45 * These settings should not be altered.
46 *-----------------------------------------------------------
49 /* Type definitions. */
51 #define portFLOAT float
52 #define portDOUBLE double
54 #define portSHORT short
55 #define portSTACK_TYPE uint32_t
56 #define portBASE_TYPE long
58 typedef portSTACK_TYPE StackType_t;
59 typedef long BaseType_t;
60 typedef unsigned long UBaseType_t;
63 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
64 typedef uint16_t TickType_t;
65 #define portMAX_DELAY ( TickType_t ) 0xffff
66 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
67 typedef uint32_t TickType_t;
68 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
70 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
71 * not need to be guarded with a critical section. */
72 #define portTICK_TYPE_IS_ATOMIC 1
74 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
76 /*-----------------------------------------------------------*/
78 /* Architecture specifics. */
79 #define portSTACK_GROWTH ( -1 )
80 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
81 #define portBYTE_ALIGNMENT 8
82 /*-----------------------------------------------------------*/
85 /* Scheduler utilities. */
86 extern void vPortYield( void );
87 #define portNVIC_INT_CTRL ( ( volatile uint32_t * ) 0xe000ed04 )
88 #define portNVIC_PENDSVSET 0x10000000
89 #define portYIELD() vPortYield()
91 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
94 if( xSwitchRequired != pdFALSE ) \
96 traceISR_EXIT_TO_SCHEDULER(); \
97 *( portNVIC_INT_CTRL ) = portNVIC_PENDSVSET; \
104 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
105 /*-----------------------------------------------------------*/
108 /* Critical section management. */
111 * Set basepri to portMAX_SYSCALL_INTERRUPT_PRIORITY without effecting other
112 * registers. r0 is clobbered.
114 #define portSET_INTERRUPT_MASK() __set_BASEPRI( configMAX_SYSCALL_INTERRUPT_PRIORITY )
117 * Set basepri back to 0 without effective other registers.
118 * r0 is clobbered. FAQ: Setting BASEPRI to 0 is not a bug. Please see
119 * https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html before disagreeing.
121 #define portCLEAR_INTERRUPT_MASK() __set_BASEPRI( 0 )
123 extern uint32_t ulPortSetInterruptMask( void );
124 extern void vPortClearInterruptMask( uint32_t ulNewMask );
125 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
126 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vPortClearInterruptMask( x )
129 extern void vPortEnterCritical( void );
130 extern void vPortExitCritical( void );
132 #define portDISABLE_INTERRUPTS() portSET_INTERRUPT_MASK()
133 #define portENABLE_INTERRUPTS() portCLEAR_INTERRUPT_MASK()
134 #define portENTER_CRITICAL() vPortEnterCritical()
135 #define portEXIT_CRITICAL() vPortExitCritical()
137 /*-----------------------------------------------------------*/
139 /* Task function macros as described on the FreeRTOS.org WEB site. */
140 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
141 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
151 #endif /* PORTMACRO_H */