2 * FreeRTOS Kernel V10.6.2
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 *-----------------------------------------------------------
48 /* When the FIT configurator or the Smart Configurator is used, platform.h has to be
50 #ifndef configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H
51 #define configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H 0
54 /* Type definitions - these are a bit legacy and not really used now, other than
55 portSTACK_TYPE and portBASE_TYPE. */
57 #define portFLOAT float
58 #define portDOUBLE double
60 #define portSHORT short
61 #define portSTACK_TYPE uint32_t
62 #define portBASE_TYPE long
64 typedef portSTACK_TYPE StackType_t;
65 typedef long BaseType_t;
66 typedef unsigned long UBaseType_t;
68 #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
69 typedef uint16_t TickType_t;
70 #define portMAX_DELAY ( TickType_t ) 0xffff
71 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
72 typedef uint32_t TickType_t;
73 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
75 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
76 not need to be guarded with a critical section. */
77 #define portTICK_TYPE_IS_ATOMIC 1
79 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
81 /*-----------------------------------------------------------*/
83 /* Hardware specifics. */
84 #define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
85 #define portSTACK_GROWTH -1
86 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
87 #define portNOP() __asm volatile( "NOP" )
89 /* Save clobbered register, set ITU SWINR (at address 0x872E0), read the value
90 back to ensure it is set before continuing, then restore the clobbered
95 "MOV.L #0x872E0, r5 \n\t" \
96 "MOV.B #1, [r5] \n\t" \
97 "MOV.L [r5], r5 \n\t" \
101 #define portYIELD_FROM_ISR( x ) do { if( x != pdFALSE ) { portYIELD(); } } while( 0 )
103 /* These macros should not be called directly, but through the
104 taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
105 performed if configASSERT() is defined to ensure an assertion handler does not
106 inadvertently attempt to lower the IPL when the call to assert was triggered
107 because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
108 when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
109 functions are those that end in FromISR. FreeRTOS maintains a separate
110 interrupt API to ensure API function and interrupt entry is as fast and as
111 simple as possible. */
112 #define portENABLE_INTERRUPTS() __asm volatile ( "MVTIPL #0" )
114 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( ulPortGetIPL() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
115 #define portDISABLE_INTERRUPTS() if( ulPortGetIPL() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) __asm volatile ( "MVTIPL %0" ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY) )
117 #define portDISABLE_INTERRUPTS() __asm volatile ( "MVTIPL %0" ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY) )
120 /* Critical nesting counts are stored in the TCB. */
121 #define portCRITICAL_NESTING_IN_TCB ( 1 )
123 /* The critical nesting functions defined within tasks.c. */
124 extern void vTaskEnterCritical( void );
125 extern void vTaskExitCritical( void );
126 #define portENTER_CRITICAL() vTaskEnterCritical()
127 #define portEXIT_CRITICAL() vTaskExitCritical()
129 /* As this port allows interrupt nesting... */
130 uint32_t ulPortGetIPL( void ) __attribute__((naked));
131 void vPortSetIPL( uint32_t ulNewIPL ) __attribute__((naked));
132 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortGetIPL(); portDISABLE_INTERRUPTS()
133 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) vPortSetIPL( uxSavedInterruptStatus )
135 /* Tickless idle/low power functionality. */
136 #if configUSE_TICKLESS_IDLE == 1
137 #ifndef portSUPPRESS_TICKS_AND_SLEEP
138 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
139 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
143 /*-----------------------------------------------------------*/
145 /* Task function macros as described on the FreeRTOS.org WEB site. */
146 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
147 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
155 #endif /* PORTMACRO_H */