简介：
我们已经在MCXN947 Core0上运行RT-thread,Core1裸机环境下运行并没有适配RTOS,我们在此基础上适配FreeRTOS。FreeRTOS的移植适配网上的教程也比较多，理论上只要把FreeRTOS 的系统文件，内存管理，架构相关适配文件，及FreeRTOS 的配置文件适配好基本就完成了移植适配。
其中适配代码本地使用的iar 使用的如下的port 文件。
添加系统的配置文件编译通过后就完成了系统的适配工作，在此基础上添加系统的配置文件FreeRTOSConfig.h
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/
#if defined(__ICCARM__) || defined(__CC_ARM) || defined(__GNUC__)
void vGenerateSecondaryToPrimaryInterrupt( void * xUpdatedMessageBuffer );
#endif
#define configUSE_PREEMPTION 1
#define configUSE_TICKLESS_IDLE 0
#define configCPU_CLOCK_HZ (150000000)
#define configTICK_RATE_HZ ((TickType_t)1000)
#define configMAX_PRIORITIES 5
#define configMINIMAL_STACK_SIZE 90
#define configMAX_TASK_NAME_LEN 10
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define configUSE_TASK_NOTIFICATIONS 1
#define configUSE_MUTEXES 1
#define configUSE_RECURSIVE_MUTEXES 0
#define configUSE_COUNTING_SEMAPHORES 1
#define configUSE_ALTERNATIVE_API 0 /* Deprecated! */
#define configQUEUE_REGISTRY_SIZE 8
#define configUSE_QUEUE_SETS 0
#define configUSE_TIME_SLICING 0
#define configUSE_NEWLIB_REENTRANT 0
#define configENABLE_BACKWARD_COMPATIBILITY 0
#define configNUM_THREAD_LOCAL_STORAGE_POINTERS 5
/* Used memory allocation (heap_x.c) */
#define configFRTOS_MEMORY_SCHEME 4
/* Tasks.c additions (e.g. Thread Aware Debug capability) */
#define configINCLUDE_FREERTOS_TASK_C_ADDITIONS_H 1
/* Memory allocation related definitions. */
#define configSUPPORT_STATIC_ALLOCATION 0
#define configSUPPORT_DYNAMIC_ALLOCATION 1
#define configTOTAL_HEAP_SIZE ((size_t)(16 * 1024))
#define configAPPLICATION_ALLOCATED_HEAP 0
/* Hook function related definitions. */
#define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 0
#define configCHECK_FOR_STACK_OVERFLOW 0
#define configUSE_MALLOC_FAILED_HOOK 0
#define configUSE_DAEMON_TASK_STARTUP_HOOK 0
/* Run time and task stats gathering related definitions. */
#define configGENERATE_RUN_TIME_STATS 0
#define configUSE_TRACE_FACILITY 1
#define configUSE_STATS_FORMATTING_FUNCTIONS 0
/* Task aware debugging. */
#define configRECORD_STACK_HIGH_ADDRESS 1
/* Co-routine related definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES 2
/* Software timer related definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY 2
#define configTIMER_QUEUE_LENGTH 10
#define configTIMER_TASK_STACK_DEPTH (configMINIMAL_STACK_SIZE * 2)
#define configASSERT_BOOL(x) if(( x) == 0) {taskDISABLE_INTERRUPTS(); for (;;);}
#define configASSERT(x) configASSERT_BOOL((x)!=0)
/* Optional functions - most linkers will remove unused functions anyway. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 0
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define INCLUDE_xTaskGetSchedulerState 1
#define INCLUDE_xTaskGetCurrentTaskHandle 1
#define INCLUDE_uxTaskGetStackHighWaterMark 0
#define INCLUDE_xTaskGetIdleTaskHandle 0
#define INCLUDE_eTaskGetState 0
#define INCLUDE_xTimerPendFunctionCall 0
#define INCLUDE_xTaskAbortDelay 0
#define INCLUDE_xTaskGetHandle 0
#define INCLUDE_xTaskResumeFromISR 1
/* Override the default implementation of sbSEND_COMPLETED so the macro creates
an interrupt in the M4 core. See the comments at the top of main.c. */
#define sbSEND_COMPLETED( pxStreamBuffer ) vGenerateSecondaryToPrimaryInterrupt( pxStreamBuffer )
#if defined(__ICCARM__)||defined(__CC_ARM)||defined(__GNUC__)
/* Clock manager provides in this variable system core clock frequency */
#include <stdint.h>
extern uint32_t SystemCoreClock;
#endif
#ifndef configENABLE_FPU
#define configENABLE_FPU 0
#endif
#ifndef configENABLE_MPU
#define configENABLE_MPU 0
#endif
#ifndef configENABLE_TRUSTZONE
#define configENABLE_TRUSTZONE 0
#endif
#ifndef configRUN_FREERTOS_SECURE_ONLY
#define configRUN_FREERTOS_SECURE_ONLY 1
#endif
/* Interrupt nesting behaviour configuration. Cortex-M specific. */
#ifdef __NVIC_PRIO_BITS
/* __BVIC_PRIO_BITS will be specified when CMSIS is being used. */
#define configPRIO_BITS __NVIC_PRIO_BITS
#else
#define configPRIO_BITS 3 /* 8 priority levels */
#endif
/* The lowest interrupt priority that can be used in a call to a "set priority"
function. */
#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY ((1U << (configPRIO_BITS)) - 1)
/* The highest interrupt priority that can be used by any interrupt service
routine that makes calls to interrupt safe FreeRTOS API functions. DO NOT CALL
INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A HIGHER
PRIORITY THAN THIS! (higher priorities are lower numeric values. */
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 2
/* Interrupt priorities used by the kernel port layer itself. These are generic
to all Cortex-M ports, and do not rely on any particular library functions. */
#define configKERNEL_INTERRUPT_PRIORITY (configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY (configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
standard names. */
#define vPortSVCHandler SVC_Handler
#define vPortPendSVHandler PendSV_Handler
#define vPortSysTickHandler SysTick_Handler
#endif /* FREERTOS_CONFIG_H */至此FreeRTOS 的适配工作就结束了，们添加如下代码创建task1 / task2 周期打印log 验证FreeRTOS 是否正常调度。
#define START_TASK_PRIO 2
#define START_STK_SIZE 128
TaskHandle_t StartTask_Handler;
void start_task(void *pvParameters);
#define TASK1_TASK_PRIO 2
#define TASK1_STK_SIZE 128
TaskHandle_t Task1Task_Handler;
void start_task1(void *pvParameters);
void start_task(void *pvParameters)
{
while(1)
{
PRINTF("task1 .\r\n");
vTaskDelay(500);
}
}
void start_task1(void *pvParameters)
{
while(1)
{
PRINTF("task2 .\r\n");
vTaskDelay(1000);
}
}
main()
{
xTaskCreate((TaskFunction_t )start_task,
(const char* )"task1",
(uint16_t )START_STK_SIZE,
(void* )NULL,
(UBaseType_t )START_TASK_PRIO,
(TaskHandle_t* )&StartTask_Handler);
xTaskCreate((TaskFunction_t )start_task1,
(const char* )"task2",
(uint16_t )TASK1_STK_SIZE,
(void* )NULL,
(UBaseType_t )TASK1_TASK_PRIO,
(TaskHandle_t* )&Task1Task_Handler);
vTaskStartScheduler();
}将代码烧录到板子中运行发现 task1/task2 会周期的打印log，至此FreeRTOS 已经正常的跑起来了，已经实现了Core0 RT-thread Core1 FreeRtos 的双系统运行。
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