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uC/OSII移植步骤

作者: 时间:2016-10-08 来源:网络 收藏
; HANDLE NESTING COUNTER
LDRR0, OS_IntNesting; OSIntNesting++;
LDRBR1, [R0]
ADDR1, R1,#1
STRBR1, [R0]
CMPR1, #1; if (OSIntNesting == 1){
BNEOS_CPU_FIQ_ISR_1
LDRR4, OS_TCBCur; OSTCBCur->OSTCBStkPtr = SP
LDRR5, [R4]
STRSP, [R5]; }
OS_CPU_FIQ_ISR_1
MSRCPSR_c, #(NO_INT | FIQ32_MODE) ; Change to FIQ mode (to use the FIQ stack to handle interrupt)
LDRR0, ??OS_CPU_FIQ_ISR_Handler


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