LiteOS学习第三篇——los_config.h 配置文件的理解
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配置文件是操作系统裁剪移植的核心部分，所以先来看看看这里面涉及到哪些内容
/****************************** System clock module configuration****************************/
/**
* @ingroup los_config
* System clock (unit: HZ)
*/
#define OS_SYS_CLOCK 16000000 //这里是系统时钟的配置，要根据不同的CPU以及CPU初始化的时钟频率来修改
/**
* @ingroup los_config
* limit addr range when search for 'funclocal(frame pointer)' or 'func name'
*/
extern char __data_end;
extern char __bss_start;
#define OS_SYS_FUNC_ADDR_START &__bss_start
#define OS_SYS_FUNC_ADDR_END &__data_end //这个宏定义有什么作用还不太清楚
/* default LiteOS ram size level
RAM_SIZE_LEVEL_0means kernel ram < 8k ,
RAM_SIZE_LEVEL_1means kernel ram < 16k,
RAM_SIZE_LEVEL_2means means kernel ram>=32k
*/ //这里说明你RAM的大小在操作系统中所说的级别，后面的有些定义也许用的到
/**
* @ingroup los_config
* Number of Ticks in one second
*/
#define LOSCFG_BASE_CORE_TICK_PER_SECOND 1000 //这里是指1秒钟的滴答数，1000肯定是固定的
/****************************** Hardware interrupt moduleconfiguration ******************************/
/**
* @ingroup los_config
* Configuration item for hardware interrupt tailoring
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_PLATFORM_HWI NO
#elif defined(RAM_SIZE_LEVEL_1)
#define LOSCFG_PLATFORM_HWI YES
#elif defined(RAM_SIZE_LEVEL_2)
#define LOSCFG_PLATFORM_HWI YES
#else
#define LOSCFG_PLATFORM_HWI YES
#endif //硬件中断的初始化为什么跟RAM大小有关，说明硬件中断的管理需要耗费一定RAM，可做裁剪
/**
* @ingroup los_config
* Maximum number of used hardware interrupts, including Tick timerinterrupts.
*/
#define LOSCFG_PLATFORM_HWI_LIMIT 96 //硬件中断的最多数量，具体有什么用还不知道，也许可用于裁剪
/****************************** Task module configuration********************************/
/**
* @ingroup los_config
* Default task priority
*/
#define LOSCFG_BASE_CORE_TSK_DEFAULT_PRIO 10 //基本内核任务优先级，具体指哪个任务再细看，也许是统计任务，或者空闲任务或者只是个默认优先级定义，方便在开任务的时候从这个优先级开始
/**
* @ingroup los_config
* Maximum supported number of tasks except the idle task rather than thenumber of usable tasks
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_CORE_TSK_LIMIT 4 // max num task
#elif defined (RAM_SIZE_LEVEL_1)
#define LOSCFG_BASE_CORE_TSK_LIMIT 7 // max num task
#elif defined (RAM_SIZE_LEVEL_2)
#define LOSCFG_BASE_CORE_TSK_LIMIT 15 // max num task
#else
#define LOSCFG_BASE_CORE_TSK_LIMIT 15 // max num task
#endif //最多任务数量，这里可以根据情况裁剪
/**
* @ingroup los_config
* Size of the idle task stack
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_CORE_TSK_IDLE_STACK_SIZE SIZE(0x2D0) // IDLE task stack
#elif defined (RAM_SIZE_LEVEL_1)
#define LOSCFG_BASE_CORE_TSK_IDLE_STACK_SIZE SIZE(0x300) // IDLE task stack
#elif defined (RAM_SIZE_LEVEL_2)
#define LOSCFG_BASE_CORE_TSK_IDLE_STACK_SIZE SIZE(0x500) // IDLE task stack
#else
#define LOSCFG_BASE_CORE_TSK_IDLE_STACK_SIZE SIZE(0x500) // IDLE task stack
#endif //内核空闲任务的堆栈大小，按默认就好，应该也可以裁剪，后面再来看
/**
* @ingroup los_config
* Default task stack size
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE SIZE(0x200) // default stack
#elif defined (RAM_SIZE_LEVEL_1)
#define LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE SIZE(0x2D0) // default stack
#elif defined (RAM_SIZE_LEVEL_2)
#define LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE SIZE(0x2D0) // default stack
#else
#define LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE SIZE(0x2D0) // default stack
#endif //默认任务大小，在创建任务时可能会用到，当然也可以自己根据情况来定义
/**
*@ingroup los_config
*Minimum stack size.
*/
#define LOS_TASK_MIN_STACK_SIZE (ALIGN(0x130, 16)) //最小任务堆栈大小，用于创建任务时检测，这里是不是可以缩小，有待考察
/**
* @ingroup los_config
* Configuration item fortask Robin tailoring
*/
#define LOSCFG_BASE_CORE_TIMESLICE YES // task-ROBIN moduel cuttingswitch //时间片轮使能
/**
*@ingroup los_config
*Longest execution time of tasks with the same priorities
*/
#define LOSCFG_BASE_CORE_TIMESLICE_TIMEOUT 10 //同一优先级最长运行时间
/**
*@ingroup los_config
*Configuration item for task (stack) monitoring module tailoring
*/
#define LOSCFG_BASE_CORE_TSK_MONITOR YES //任务的监测功能是不是要开启，具体监测什么有待考察
/**
*@ingroup los_config
*Configuration item for performance moniter unit
*/
#define OS_INCLUDE_PERF YES //性能检测使能
/**
*@ingroup los_config
*Define a usable task priority.Highest task priority.
*/
#define LOS_TASK_PRIORITY_HIGHEST 0 //最大优先级
/**
*@ingroup los_config
*Define a usable task priority.Lowest task priority.
*/
#define LOS_TASK_PRIORITY_LOWEST 31 //最小优先级
/****************************** Semaphoremodule configuration ******************************/
/**
*@ingroup los_config
*Configuration item for semaphore module tailoring
*/
#define LOSCFG_BASE_IPC_SEM YES
/**
*@ingroup los_config
*Maximum supported number of semaphores
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_IPC_SEM_LIMIT 5 // the max sem-numb
#else
#define LOSCFG_BASE_IPC_SEM_LIMIT 10 // the max sem-numb
#endif //信号量的一些配置
/****************************** mutex moduleconfiguration ******************************/
/**
*@ingroup los_config
*Configuration item for mutex module tailoring
*/
#define LOSCFG_BASE_IPC_MUX YES
/**
*@ingroup los_config
*Maximum supported number of mutexes
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_IPC_MUX_LIMIT 5 // the max mutex-num
#else
#define LOSCFG_BASE_IPC_MUX_LIMIT 10 // the max mutex-num
#endif //互斥信号量配置
/****************************** Queue moduleconfiguration ********************************/
/**
*@ingroup los_config
*Configuration item for queue module tailoring
*/
#define LOSCFG_BASE_IPC_QUEUE YES
/**
*@ingroup los_config
*Maximum supported number of queues rather than the number of usable queues
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_IPC_QUEUE_LIMIT 5 //the max queue-numb
#elif defined (RAM_SIZE_LEVEL_1)
#define LOSCFG_BASE_IPC_QUEUE_LIMIT 7 //the max queue-numb
#elif defined (RAM_SIZE_LEVEL_2)
#define LOSCFG_BASE_IPC_QUEUE_LIMIT 10 //the max queue-numb
#else
#define LOSCFG_BASE_IPC_QUEUE_LIMIT 10 //the max queue-numb
#endif //消息队列配置
/****************************** Softwaretimer module configuration **************************/
#if (LOSCFG_BASE_IPC_QUEUE == YES)
/**
*@ingroup los_config
*Configuration item for software timer module tailoring
*/
#define LOSCFG_BASE_CORE_SWTMR YES
/**
*@ingroup los_config
*Maximum supported number of software timers rather than the number of usablesoftware timers
*/
#if defined (RAM_SIZE_LEVEL_0)
#define LOSCFG_BASE_CORE_SWTMR_LIMIT 4 // the max SWTMR numb
#elif defined (RAM_SIZE_LEVEL_1)
#define LOSCFG_BASE_CORE_SWTMR_LIMIT 7 // the max SWTMR numb
#elif defined (RAM_SIZE_LEVEL_2)
#define LOSCFG_BASE_CORE_SWTMR_LIMIT 16 // the max SWTMR numb
#else
#define LOSCFG_BASE_CORE_SWTMR_LIMIT 16 // the max SWTMR numb
#endif
/**
*@ingroup los_config
* Maxnumber of software timers ID
*/
#define OS_SWTMR_MAX_TIMERID ((65535/LOSCFG_BASE_CORE_SWTMR_LIMIT) * LOSCFG_BASE_CORE_SWTMR_LIMIT)
/**
*@ingroup los_config
*Maximum size of a software timer queue
*/
#define OS_SWTMR_HANDLE_QUEUE_SIZE (LOSCFG_BASE_CORE_SWTMR_LIMIT + 0)
/**
*@ingroup los_config
*Minimum divisor of software timer multiple alignment
*/
#define LOS_COMMON_DIVISOR 10
#endif
/****************************** fw Interfaceconfiguration **************************/
/**
*@ingroup los_config
*Configuration item for the monitoring of task communication
*/
#define LOSCFG_COMPAT_CMSIS_FW YES
/****************************** proc moduleconfiguration **************************/
/**
*@ingroup los_config
*Version number
*/
#define VER "Huawei LiteOS KernelV100R001c00B021"
/****************************** others**************************/
/**
*@ingroup los_config
*Configuration system wake-up info to open
*/
#define OS_SR_WAKEUP_INFO YES //配置唤醒信息，应该是通过串口打印，可裁剪
/**
*@ingroup los_config
*Configuration library function is included
*/
#ifndef LOSCFG_LIB_LIBC
#define LOSCFG_LIB_LIBC
#endif
/* Declaration of Huawei LiteOS moduleinitialization functions*/
/**
*@ingroup los_config
*@brief: Task init function.
*
* @parDescription:
* ThisAPI is used to initialize task module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_TSK_NO_MEMORY 0x03000200:Insufficient memory for task creation.
*@retval #LOS_OK 0:Task initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osTaskInit(VOID);
/**
*@ingroup los_config
*@brief: hardware interrupt init function.
*
* @parDescription:
* ThisAPI is used to initialize hardware interrupt module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_OK 0:Hardware interrupt initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern VOID osHwiInit(void);
/**
*@ingroup los_config
*@brief: Semaphore init function.
*
* @parDescription:
* ThisAPI is used to initialize Semaphore module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_SEM_NO_MEMORY 0x02000700:The memory is insufficient.
*@retval #LOS_OK 0:Semaphore initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osSemInit(void);
/**
*@ingroup los_config
*@brief: Mutex init function.
*
* @parDescription:
* ThisAPI is used to initialize mutex module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_MUX_NO_MEMORY 0x02001d00:The memory request fails.
*@retval #LOS_OK 0:Mutex initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osMuxInit(void);
/**
*@ingroup los_config
*@brief: Queue init function.
*
* @parDescription:
* ThisAPI is used to initialize Queue module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_QUEUE_MAXNUM_ZERO 0x02000600:The maximum number of queueresources is configured to 0.
*@retval #LOS_ERRNO_QUEUE_NO_MEMORY 0x02000601:The queue block memory fails to be initialized.
*@retval #LOS_OK 0:Queue initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osQueueInit(void);
/**
*@ingroup los_config
*@brief: Software Timers init function.
*
* @parDescription:
* ThisAPI is used to initialize Software Timers module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_SWTMR_MAXSIZE_INVALID 0x02000308:Invalid configured number of software timers.
*@retval #LOS_ERRNO_SWTMR_NO_MEMORY 0x02000307:Insufficient memory for software timer linked list creation.
*@retval #LOS_ERRNO_SWTMR_HANDLER_POOL_NO_MEM 0x0200030a:Insufficient memory allocated by membox.
*@retval #LOS_ERRNO_SWTMR_QUEUE_CREATE_FAILED 0x0200030b:The software timer queue fails to be created.
*@retval #LOS_ERRNO_SWTMR_TASK_CREATE_FAILED 0x0200030c:The software timer task fails to be created.
*@retval #LOS_OK 0:Software Timersinitialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osSwTmrInit(void);
/**
*@ingroup los_config
*@brief: Task start running function.
*
* @parDescription:
* ThisAPI is used to start a task.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval None.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern VOID LOS_StartToRun(VOID);
/**
*@ingroup los_config
*@brief: Test Task init function.
*
* @parDescription:
* ThisAPI is used to initialize Test Task.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_OK 0:App_Task initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 los_TestInit(VOID);
/**
*@ingroup los_config
*@brief: Task start function.
*
* @parDescription:
* ThisAPI is used to start all tasks.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval None.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern VOID osStart(void);
/**
*@ingroup los_config
*@brief: Hardware init function.
*
* @parDescription:
* ThisAPI is used to initialize Hardware module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval None.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern VOID osHwInit(VOID);
/**
*@ingroup los_config
*@brief Configuring the maximum number oftasks.
*
*@parDescription:
*ThisAPI is used to configuring the maximum number of tasks.
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval None.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern VOID osRegister(VOID);
/**
*@ingroup los_config
*@brief System kernel initialization function.
*
*@parDescription:
*ThisAPI is used to Initialize kernel ,configure all system modules.
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval #LOS_OK 0:Systemkernel initialization success.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern int osMain(void);
/**
*@ingroup los_config
*@brief System kernel initialization function.
*
*@parDescription:
*ThisAPI is used to Initialize kernel ,configure all system modules.
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval #LOS_OK 0:System kernel initialization success.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern int LOS_KernelInit(void);
/**
*@ingroup los_config
*@brief start system tick handler function.
*
*@parDescription:
*ThisAPI is used to Start tick .
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval #LOS_OK 0:Systemkernel initialization success.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 LOS_EnableTick(void);
/**
*@ingroup los_config
*@brief System kernel start function.
*
*@parDescription:
*ThisAPI is used to Start run kernel .
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval #LOS_OK 0:Systemkernel initialization success.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 LOS_Start(void);
/**
*@ingroup los_config
*@brief Configure Tick Interrupt Start.
*
*@parDescription:
*ThisAPI is used to configure Tick Interrupt Start.
*
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval #LOS_OK 0:configure TickInterrupt success.
*@retval #LOS_ERRNO_TICK_CFG_INVALID 0x02000400:configure Tick Interruptfailed.
*
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osTickStart(VOID);
/**
*@ingroup los_config
*@brief Scheduling initialization.
*
*@parDescription:
*<ul>
*<li>This API is used to initializescheduling that is used for later task scheduling.</li>
*</ul>
*@attention
*<ul>
*<li>None.</li>
*</ul>
*
*@param: None.
*
*@retval: None.
*@parDependency:
*<ul><li>los_config.h: the headerfile that contains the API declaration.</li></ul>
*@see
*@since Huawei LiteOS V100R001C00
*/
extern VOID osTimesliceInit(VOID);
/**
*@ingroup los_config
*@brief: System memory init function.
*
* @parDescription:
* ThisAPI is used to initialize system memory module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_OK 0:System memory initialization success.
*@retval #OS_ERROR (UINT32)(-1):System memory initialization failed.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osMemSystemInit(VOID);
/**
*@ingroup los_config
*@brief: Task Monitor init function.
*
* @parDescription:
* ThisAPI is used to initialize Task Monitor module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_OK 0:Task Monitor initialization success.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern VOID osTaskMonInit(VOID);
/**
*@ingroup los_config
*@brief: CPUP init function.
*
* @parDescription:
* ThisAPI is used to initialize CPUP module.
*
*@attention:
*<ul><li>None.</li></ul>
*
*@param: None.
*
*@retval #LOS_ERRNO_CPUP_NO_MEMORY 0x02001e00:The request for memory fails.
*@retval #LOS_OK 0:CPUP initializationsuccess.
*
* @parDependency:
*<ul><li>los_config.h: the header file that contains the APIdeclaration.</li></ul>
* @seeNone.
*@since Huawei LiteOS V100R001C00
*/
extern UINT32 osCpupInit(VOID);
extern void osBackTrace(VOID);
#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */
#endif /* _LOS_CONFIG_H *
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