util_critical_section.s51

reference about wireless design which is helpful to everyone

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Filename:     flashWritePage.s51
Target:       cc2511
Author:       JOL
Revised:      24/03-2006
Revision:     1.0
******************************************************************************/
;;-----------------------------------------------------------------------------
;; See hal.h for a description of this function.
;;-----------------------------------------------------------------------------
#include "ioCC2511.h"


                MODULE  util_critical_section.s51

                RSEG    RCODE
                PUBLIC  utilEnterCriticalSection;
                FUNCTION utilEnterCriticalSection, 0203H

                ; Turn off global interrupts and return the previous state of EA
utilEnterCriticalSection:
                MOV     A, #01H;
                JBC     EA, intsTurnedOff;
                MOV     A, #00H;
intsTurnedOff:  MOV     R1, A;
                RET;


                PUBLIC  utilLeaveCriticalSection;
                FUNCTION utilLeaveCriticalSection, 0203H

                ; Restore the previous EA state from the value provided in the function parameter
utilLeaveCriticalSection:
                MOV     A, R1;
                MOV     C, ACC^0;
                MOV     EA, C;
                RET;

                END;