code.txt

来自「CCS开发环境下」· 文本 代码 · 共 41 行

//====================timer Initialization and Configuration=======================//
main()
{
    int y=0;
    asm(" .bss _y,0");
    asm(" .global _y");  
    asm("An .word 0ffffh");
    asm("Dp .word 0800000h");

    asm(" LDI 0h,R0");
    asm(" STI R0,@8024h");
    asm(" STI R0,@8028h");
    asm("Timer0 .word 808020h");
    asm("TCTRL_GO .word 3C1h");
    asm("TCNT .word 0");
    asm(" LDP Timer0");
    asm(" LDI @TCNT,R0");
    asm(" LDI @Timer0,AR0");
    asm(" LDI 12h,R0");
    asm(" STI R0,@8028h");
    asm(" LDI @TCTRL_GO,R0");
    asm(" STI R0,*AR0");
     
    while((y&0x800) == 0)
    {
        asm(" LDI @Timer0,AR1");
        asm(" LDI *AR1,R5");        
        asm(" LDI _y,AR5"); 
        asm(" LDI AR5,R6");
        asm(" AND @An,R6");
        asm(" ADDI @Dp,R6");
        asm(" LDIU R6,AR5");
        asm(" STI R5,*AR5"); 
        y++;
    }                       
    asm(" LDI 0h,R5");
    asm(" STI R5,*AR0");
    asm(" STI R5,*+AR0(4)");  
    return 0;
}