disp.asm

这段代码是关于用凌阳采集温度、并显示在数码管上的程序。

//======================================================================
//	文件名称：	DISP.ASM
//	功能描述：	在LED上显示DS18B20测量的温度值
//	维护记录：	
//======================================================================
.external _fenli
.INCLUDE HARDWARE.INC
.external _SHIWEI
.external _GEWEI
.external _XIAOSHU
.external _XIAOSHU2
.data
TABLE: .dw 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f
.code
.public _DISP
_DISP: 
   R3=BP
   PUSH R3 TO [SP]
   call _fenli
   r1=1
   [P_Watchdog_Clear] = R1;             //清看门狗
   r1=[P_IOA_Data]
   r1=r1&0x00f0
   [P_IOA_Data]=r1
   r1=[P_IOA_Dir]
   r1=r1|0xff0f
   [P_IOA_Dir]=r1
   r1=[P_IOA_Attrib]
   r1=r1|0xff0f
   [P_IOA_Attrib]=r1
   r1=[P_IOA_Data]
   r1=r1|0xff0f
   [P_IOA_Data]=r1

   BP=TABLE
   R1=[_SHIWEI]
   BP=BP+R1
   R1=[BP]
   r1=r1 ROL 4
   r1=r1 ROL 4
   R1=R1&0xff01
   R2=[P_IOA_Data]
   r2=r2&0x00f1
   r1=r1|r2
   [P_IOA_Data]=r1
   call _de1
   r1=[P_IOA_Data]
   r1=r1&0x00f0
   [P_IOA_Data]=r1
   BP=TABLE
   R1=[_GEWEI]
   BP=BP+R1
   R1=[BP]
   r1=r1 ROL 4
   r1=r1 ROL 4
   R1=R1&0xff00
   R1=R1|0x8002
   R2=[P_IOA_Data]
   r2=r2&0x00f2
   r1=r1|r2
   [P_IOA_Data]=r1
   call _de1
   r1=[P_IOA_Data]
   r1=r1&0x00F0
   [P_IOA_Data]=r1
   BP=TABLE
   R1=[_XIAOSHU]
   BP=BP+R1
   R1=[BP]
   r1=r1 ROL 4
   r1=r1 ROL 4
   R1=R1&0xff04
   R2=[P_IOA_Data]
   r2=r2&0x00f4
   r1=r1|r2
   [P_IOA_Data]=r1
   CALL _de1
   r1=[P_IOA_Data]
   r1=r1&0x00F0
   [P_IOA_Data]=r1
    BP=TABLE
   R1=[_XIAOSHU2]
   BP=BP+R1
   R1=[BP]
   r1=r1 ROL 4
   r1=r1 ROL 4
   R1=R1&0xff08
   R2=[P_IOA_Data]
   r2=r2&0x00f8
   r1=r1|r2
   [P_IOA_Data]=r1
    CALL _de1
   r1=[P_IOA_Data]
   r1=r1&0x00F0
   [P_IOA_Data]=r1
   
   POP R3 FROM [SP]
   BP=R3
   retf
  
  _de1:.proc
       r1=0x0160
   de2:r1-=1
       jnz de2 
       retf
     .endp