os_cpu.h

embed in keil

/*******************************************************************************************************\
*                                                 uC/OS                                                 *
*                                          The Real-Time Kernel                                         *
*                                                                                                       *
*                                       8052 SPECIFIC HEADER FILE                                       *
*                                                                                                       *
*                                                                                                       *
* File : OS_CPU.H                                                                                       *
*                                                                                                       *
* Adapted to the IAR Embedded Workbench 2.2 Systems Compiler by Antonio Fuentes, MSL Valencia.          *
*                                                                                                       *
* [e-mail]                                                                           *
\*******************************************************************************************************/

/*******************************************************************************************************\
*                                            GENERIC DATA TYPES                                         *
\*******************************************************************************************************/

typedef unsigned char  BOOLEAN;                  /* Unsigned  8 bit quantity                           */

typedef signed   char  BYTE;                     /* Signed    8 bit quantity                           */
typedef unsigned char  UBYTE;                    /* Unsigned  8 bit quantity                           */
typedef signed   char  INT8S;                    /* Define data types for backward compatibility ...   */
typedef unsigned char  INT8U;                    /* ... to uC/OS V1.xx.  Not actually needed for ...   */
typedef signed   int   INT16S;                   /* ... uC/OS-II.                                      */
typedef unsigned int   INT16U;
typedef signed   int   WORD;                     /* Signed   16 bit quantity                           */
typedef unsigned int   UWORD;                    /* Unsigned 16 bit quantity                           */

typedef signed   long  LONG;                     /* Signed   32 bit quantity                           */
typedef unsigned long  ULONG;                    /* Unsigned 32 bit quantity                           */
typedef signed   long  INT32S;
typedef unsigned long  INT32U;                   /* Unsigned 32 bit quantity                           */

/*******************************************************************************************************\
*                                           SPECIFIC DATA TYPES                                         *
\*******************************************************************************************************/

typedef unsigned char  OS_STK, *pOS_STK;         /* Tasks' stack data type (8-bit values)              */
typedef unsigned char  OS_CPU_SR;                /* Define size of CPU status register (PSW = 8 bits)  */

/*******************************************************************************************************\
*                                       80C52 PROCESSOR SPECIFICS                                       *
\*******************************************************************************************************/
#define  OS_CRITICAL_METHOD    1

#if      OS_CRITICAL_METHOD == 1
 #define  OS_ENTER_CRITICAL()  (EA = 0)
 #define  OS_EXIT_CRITICAL()   (EA = 1)
#endif 
  
/*******************************************************************************************************\
*                                          MISCELLANEOUS                                                *
\*******************************************************************************************************/

#define  OS_STK_GROWTH         0                 /* Stack grows from LOW to HIGH memory on the 8052    */
#define  START_TIMER()        (TR0 = 1)          /* Macro to start timer #0 as system tick             */