uCOS2014.1.11

typedef unsigned char  BOOLEAN;
typedef unsigned char  INT8U;      /* Unsigned  8 bit quantity   */
typedef signed   char  INT8S;      /* Signed    8 bit quantity   */
typedef unsigned int   INT16U;     /* Unsigned 16 bit quantity   */
typedef signed   int   INT16S;     /* Signed   16 bit quantity   */
typedef unsigned long  INT32U;     /* Unsigned 32 bit quantity  */
typedef signed   long  INT32S;     /* Signed   32 bit quantity   */
typedef float          FP32;       /* Single precision floating point  */
typedef double         FP64;        /* Double precision floating point */

typedef unsigned int   OS_STK;      /* Each stack entry is 16-bit wide */
typedef unsigned short OS_CPU_SR;   /* Define size of CPU status register (PSW = 16 bits) */

#define BYTE           INT8S        /* Define data types for backward compatibility ...   */
#define UBYTE          INT8U        /* ... to uC/OS V1.xx.  Not actually needed for ...   */
#define WORD           INT16S       /* ... uC/OS-II.    */
#define UWORD          INT16U
#define LONG           INT32S
#define ULONG          INT32U

系统总是把最低优先级别号OS_LOWEST_PRIO自动赋给空闲任务；如果程序中使用了统计任务，系统会把优先级别为OS_LOWEST_PRIO-1的级别号自动赋给统计任务。

uCOS2014.1.11

原文：http://www.cnblogs.com/chasing/p/3514843.html