os_tickisr.asm

来自「ucos2.52在2812上的移植」· 汇编 代码 · 共 24 行

.page
.text
_OSTickISR:
    .ref _OSTimeTick
    .ref _OSIntNesting
    .ref _OSIntExit
    .ref _PieCtrlRegs
    .global _OSTickISR	

    PUSH RPC
    CLRC      PAGE0,OVM
	
    MOVW      DP,#_PieCtrlRegs+1
    MOV       @_PieCtrlRegs+1,#1
    MOVW      DP,#_OSIntNesting     ;提示uc/OS-II 进入中断
    INC       @_OSIntNesting 
    
    LCR _OSTimeTick    
    LCR _OSIntExit	
    
    ;NASP
    POP  RPC
    IRET
	.end