MSP430-INTERNAL PULL DOWN

Digital input with INTERNAL PULL DOWN in “P1.4”

      .include "msp430g2x31.inc"

      org 0xf800                           

      mov.w #(WDTPW|WDTHOLD), &WDTCTL

      mov.b #0x10, P1REN

      CLR.B P1OUT

      CLR R5  

      mov.b #0x1, &P1DIR 

               

L1:   MOV.b &P1IN,  r5

      AND.b #0x10,r5

      tst r5

      JZ L1

      mov.b #0x41, &P1OUT     

L3:   jmp L3

      org 0xfffe

      dw 0xf800