system_initial.asm

基于凌阳061A单片机的高灵敏度低电压检测源码

.include hardware.inc
.define P_ADC_MUX_Ctrl 0x702b
.code
.PUBLIC _system_initial;
_system_initial:.proc
 r1=0xff07;
 [P_IOB_Dir]=r1;
 [P_IOB_Attrib]=r1;
 r1=0x0000;
 [P_IOB_Data]=r1;
 
 r1=0x0000;
 [P_IOA_Dir]=r1;
 r1=0x0001;
 [P_IOA_Attrib]=r1;
 r1=0x0000;
 [P_IOA_Data]=r1;
  
  r1=0x0001;
 [P_ADC_MUX_Ctrl]=r1;
 [P_ADC_Ctrl]=r1;
 
 R1=0x0044;
 [P_INT_Ctrl]=r1;
  
  INT IRQ;  
    retf;
  .endp