Printf

Printf 的协作图:

宏定义
#define	LOS_EMG_LEVEL   0
#define	LOS_COMMOM_LEVEL   (LOS_EMG_LEVEL + 1)
#define	LOS_ERR_LEVEL   (LOS_COMMOM_LEVEL + 1)
#define	LOS_WARN_LEVEL   (LOS_ERR_LEVEL + 1)
#define	LOS_INFO_LEVEL   (LOS_WARN_LEVEL + 1)
#define	LOS_DEBUG_LEVEL   (LOS_INFO_LEVEL + 1)
#define	PRINT_LEVEL   LOS_ERR_LEVEL
#define	PRINT_DEBUG(fmt, ...)
	Format and print debug log.
#define	PRINT_INFO(fmt, ...)
	Format and print information log.
#define	PRINT_WARN(fmt, ...)
	Format and print warning log.
#define	PRINT_ERR(fmt, ...)
	Format and print error log.
#define	PRINTK(fmt, ...)   dprintf(fmt, ##__VA_ARGS__)
	Format and print common log.
#define	PRINT_EMG(fmt, ...)
	Format and print emergency log.
#define	PRINT_RELEASE(fmt, ...)   dprintf(fmt, ##__VA_ARGS__)
	Format and print log.

函数
void	LOS_Printf (const CHAR *fmt,...)
	Format and print data.

详细描述

宏定义说明

LOS_COMMOM_LEVEL

#define LOS_COMMOM_LEVEL   (LOS_EMG_LEVEL + 1)

log print level definition, LOS_COMMOM_LEVEL is set to 1, it means the log is common.

LOS_DEBUG_LEVEL

#define LOS_DEBUG_LEVEL   (LOS_INFO_LEVEL + 1)

log print level definition, LOS_DEBUG_LEVEL is set to 5, it means it is a debug log.

LOS_EMG_LEVEL

#define LOS_EMG_LEVEL   0

log print level definition, LOS_EMG_LEVEL is set to 0, it means the log is emergency.

LOS_ERR_LEVEL

#define LOS_ERR_LEVEL   (LOS_COMMOM_LEVEL + 1)

log print level definition, LOS_ERR_LEVEL is set to 2, it means it is a error log.

LOS_INFO_LEVEL

#define LOS_INFO_LEVEL   (LOS_WARN_LEVEL + 1)

log print level definition, LOS_INFO_LEVEL is set to 4, it means the log is an information.

LOS_WARN_LEVEL

#define LOS_WARN_LEVEL   (LOS_ERR_LEVEL + 1)

log print level definition, LOS_WARN_LEVEL is set to 3, it means it is a warning log.

PRINT_DEBUG

#define PRINT_DEBUG	(		fmt,
			...
	)

Format and print debug log.

Description:

Define function macros PRINT_DEBUG. The Function can print debug log according to fmt when the PRINT_LEVEL is set to LOS_DEBUG_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINT_EMG

#define PRINT_EMG	(		fmt,
			...
	)

值:

    do {           \
    (dprintf("[EMG] "), dprintf(fmt, ##__VA_ARGS__)); \
} while (0)

Format and print emergency log.

Description:

Define function macros PRINT_EMG. The Function can print emergency log according to fmt when the PRINT_LEVEL is greater than or equal to LOS_EMG_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINT_ERR

#define PRINT_ERR	(		fmt,
			...
	)

值:

    do {           \
    (dprintf("[ERR] "), dprintf(fmt, ##__VA_ARGS__)); \
} while (0)

Format and print error log.

Description:

Define function macros PRINT_ERR. The Function can print error log according to fmt when the PRINT_LEVEL is greater than or equal to LOS_ERR_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINT_INFO

#define PRINT_INFO	(		fmt,
			...
	)

Format and print information log.

Description:

Define function macros PRINT_INFO. The Function can print information log according to fmt when the PRINT_LEVEL is greater than or equal to LOS_INFO_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINT_LEVEL

#define PRINT_LEVEL   LOS_ERR_LEVEL

The default log print level. PRINT_LEVEL is set to debug log level if LOSCFG_SHELL_LK is defined, otherwise PRINT_LEVEL is set to error log level. The default log print level means only print the log which its level value is lower than or equal to the PRINT_LEVEL.

PRINT_RELEASE

#define PRINT_RELEASE	(		fmt,
			...
	)		dprintf(fmt, ##__VA_ARGS__)

Format and print log.

Description:

Define function macros PRINT_RELEASE. The Function can print argument(s) according to fmt. It is same with dprintf function.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINT_WARN

#define PRINT_WARN	(		fmt,
			...
	)

Format and print warning log.

Description:

Define function macros PRINT_WARN. The Function can print warning log according to fmt when the PRINT_LEVEL is greater than or equal to LOS_WARN_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

PRINTK

#define PRINTK	(		fmt,
			...
	)		dprintf(fmt, ##__VA_ARGS__)

Format and print common log.

Description:

Define function macros PRINTK. The Function can print common log according to fmt when the PRINT_LEVEL is greater than or equal to LOS_COMMOM_LEVEL.

注意

None.

参数

fmt	[IN] Type: const CHAR *. It controls the output format as in C printf.
args	[IN] It point to the variable parameters.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

dprintf

自从

Huawei LiteOS V100R001C00

函数说明

LOS_Printf()

void LOS_Printf ( const CHAR *  fmt,   ...  )

extern

Format and print data.

Description:

Print argument(s) according to fmt.

注意

None.

参数

fmt	[IN] Type char*. It controls the output format as in C printf.

返回值

None.

Dependency:

• los_printf.h: the header file that contains the API declaration.

参见

printf

自从

Huawei LiteOS V100R001C00