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          uC/OSII移植步驟

          作者: 時(shí)間:2016-10-08 來(lái)源:網(wǎng)絡(luò) 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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