2 * FreeRTOS Kernel V10.4.2
3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
9 * the Software, and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * https://www.FreeRTOS.org
23 * https://github.com/FreeRTOS
36 /* Hardware specifics. */
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 /* When the FIT configurator or the Smart Configurator is used, platform.h has to be
51 #ifndef configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H
52 #define configINCLUDE_PLATFORM_H_INSTEAD_OF_IODEFINE_H 0
55 /* If configUSE_TASK_DPFPU_SUPPORT is set to 1 (or undefined) then each task will
56 * be created without a DPFPU context, and a task must call vTaskUsesDPFPU() before
57 * making use of any DPFPU registers. If configUSE_TASK_DPFPU_SUPPORT is set to 2 then
58 * tasks are created with a DPFPU context by default, and calling vTaskUsesDPFPU() has
59 * no effect. If configUSE_TASK_DPFPU_SUPPORT is set to 0 then tasks never take care
60 * of any DPFPU context (even if DPFPU registers are used). */
61 #ifndef configUSE_TASK_DPFPU_SUPPORT
62 #define configUSE_TASK_DPFPU_SUPPORT 1
65 /*-----------------------------------------------------------*/
67 /* Type definitions - these are a bit legacy and not really used now, other than
68 * portSTACK_TYPE and portBASE_TYPE. */
70 #define portFLOAT float
71 #define portDOUBLE double
73 #define portSHORT short
74 #define portSTACK_TYPE uint32_t
75 #define portBASE_TYPE long
77 typedef portSTACK_TYPE StackType_t;
78 typedef long BaseType_t;
79 typedef unsigned long UBaseType_t;
81 #if ( configUSE_16_BIT_TICKS == 1 )
82 typedef uint16_t TickType_t;
83 #define portMAX_DELAY ( TickType_t ) 0xffff
85 typedef uint32_t TickType_t;
86 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
88 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
89 * not need to be guarded with a critical section. */
90 #define portTICK_TYPE_IS_ATOMIC 1
93 /*-----------------------------------------------------------*/
95 /* Hardware specifics. */
96 #define portBYTE_ALIGNMENT 8 /* Could make four, according to manual. */
97 #define portSTACK_GROWTH -1
98 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
99 #define portNOP() nop()
101 /* Yield equivalent to "*portITU_SWINTR = 0x01; ( void ) *portITU_SWINTR;"
102 * where portITU_SWINTR is the location of the software interrupt register
103 * (0x000872E0). Don't rely on the assembler to select a register, so instead
104 * save and restore clobbered registers manually. */
105 #pragma inline_asm vPortYield
106 static void vPortYield( void )
108 #ifndef __CDT_PARSER__
109 /* Save clobbered register - may not actually be necessary if inline asm
110 * functions are considered to use the same rules as function calls by the
113 /* Set ITU SWINTR. */
114 MOV.L # 000872E0H, R5
116 /* Read back to ensure the value is taken before proceeding. */
118 /* Restore clobbered register to its previous value. */
123 #define portYIELD() vPortYield()
124 #define portYIELD_FROM_ISR( x ) if( ( x ) != pdFALSE ) portYIELD()
126 /* These macros should not be called directly, but through the
127 * taskENTER_CRITICAL() and taskEXIT_CRITICAL() macros. An extra check is
128 * performed if configASSERT() is defined to ensure an assertion handler does not
129 * inadvertently attempt to lower the IPL when the call to assert was triggered
130 * because the IPL value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY
131 * when an ISR safe FreeRTOS API function was executed. ISR safe FreeRTOS API
132 * functions are those that end in FromISR. FreeRTOS maintains a separate
133 * interrupt API to ensure API function and interrupt entry is as fast and as
134 * simple as possible. */
135 #define portENABLE_INTERRUPTS() set_ipl( ( long ) 0 )
137 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( ( get_ipl() <= configMAX_SYSCALL_INTERRUPT_PRIORITY ) )
138 #define portDISABLE_INTERRUPTS() if( get_ipl() < configMAX_SYSCALL_INTERRUPT_PRIORITY ) set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
140 #define portDISABLE_INTERRUPTS() set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
143 /* Critical nesting counts are stored in the TCB. */
144 #define portCRITICAL_NESTING_IN_TCB ( 1 )
146 /* The critical nesting functions defined within tasks.c. */
147 extern void vTaskEnterCritical( void );
148 extern void vTaskExitCritical( void );
149 #define portENTER_CRITICAL() vTaskEnterCritical()
150 #define portEXIT_CRITICAL() vTaskExitCritical()
152 /* As this port allows interrupt nesting... */
153 #define portSET_INTERRUPT_MASK_FROM_ISR() ( UBaseType_t ) get_ipl(); set_ipl( ( long ) configMAX_SYSCALL_INTERRUPT_PRIORITY )
154 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ) set_ipl( ( long ) uxSavedInterruptStatus )
156 /*-----------------------------------------------------------*/
158 /* Task function macros as described on the FreeRTOS.org WEB site. */
159 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
160 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
162 /*-----------------------------------------------------------*/
164 /* If configUSE_TASK_DPFPU_SUPPORT is set to 1 (or left undefined) then tasks are
165 * created without a DPFPU context and must call vPortTaskUsesDPFPU() to give
166 * themselves a DPFPU context before using any DPFPU instructions. If
167 * configUSE_TASK_DPFPU_SUPPORT is set to 2 then all tasks will have a DPFPU context
169 #if( configUSE_TASK_DPFPU_SUPPORT == 1 )
170 void vPortTaskUsesDPFPU( void );
172 /* Each task has a DPFPU context already, so define this function away to
173 * nothing to prevent it being called accidentally. */
174 #define vPortTaskUsesDPFPU()
176 #define portTASK_USES_DPFPU() vPortTaskUsesDPFPU()
178 /* Definition to allow compatibility with existing FreeRTOS Demo using flop.c. */
179 #define portTASK_USES_FLOATING_POINT() vPortTaskUsesDPFPU()
185 #endif /* PORTMACRO_H */