RTT常用数据类型定义在rtdef.h中
/* RT-Thread basic data type definitions */ typedef signed char rt_int8_t; /**< 8bit integer type */ typedef signed short rt_int16_t; /**< 16bit integer type */ typedef signed long rt_int32_t; /**< 32bit integer type */ typedef unsigned char rt_uint8_t; /**< 8bit unsigned integer type */ typedef unsigned short rt_uint16_t; /**< 16bit unsigned integer type */ typedef unsigned long rt_uint32_t; /**< 32bit unsigned integer type */ typedef int rt_bool_t; /**< boolean type */ /* 32bit CPU */ typedef long rt_base_t; /**< Nbit CPU related date type */ typedef unsigned long rt_ubase_t; /**< Nbit unsigned CPU related data type */ typedef rt_base_t rt_err_t; /**< Type for error number */ typedef rt_uint32_t rt_time_t; /**< Type for time stamp */ typedef rt_uint32_t rt_tick_t; /**< Type for tick count */ typedef rt_base_t rt_flag_t; /**< Type for flags */ typedef rt_ubase_t rt_size_t; /**< Type for size number */ typedef rt_ubase_t rt_dev_t; /**< Type for device */ typedef rt_base_t rt_off_t; /**< Type for offset */ /* boolean type definitions */ #define RT_TRUE 1 /**< boolean true */ #define RT_FALSE 0 /**< boolean fails */
/* RT-Thread error code definitions */ #define RT_EOK 0 /**< There is no error */ #define RT_ERROR 1 /**< A generic error happens */ #define RT_ETIMEOUT 2 /**< Timed out */ #define RT_EFULL 3 /**< The resource is full */ #define RT_EEMPTY 4 /**< The resource is empty */ #define RT_ENOMEM 5 /**< No memory */ #define RT_ENOSYS 6 /**< No system */ #define RT_EBUSY 7 /**< Busy */ #define RT_EIO 8 /**< IO error */
现在感觉问题：类型带_t，容易与后续指针混淆，定义的后续实体变量指针都带_t，如：
typedef struct rt_device *rt_device_t;