Dec 9, 2013

MSP430-assembly language part-2.1-TIMER

Time  = (65000*2)+1/1.1MHz = 0.118182727

.include "msp430g2x31.inc"
org 0xf800                 
      mov #(WDTPW|WDTHOLD), &WDTCTL
      mov #0x280, SP
      mov.b #0x41,&P1DIR
      mov.b #0x41,P1OUT  
      mov #(TASSEL_2|MC_3|TAIE), &TACTL
      mov #65000, &TACCR0
      eint
jimmyloop:
      jmp jimmyloop          
jimmyisr:
      bic #1,&TACTL
      xor.b #41h, &P1OUT
      reti
ORG     0FFF0h                 
DW      jimmyisr
ORG     0FFFEh                 
DW      0xf800
.include "msp430g2x31.inc"
org f800h                 
      mov #(WDTPW|WDTHOLD), &WDTCTL
      mov #0x280, SP
      mov.b #0x41,&P1DIR
      mov.b #0x41,P1OUT  
      mov #(TASSEL_2|MC_1), &TACTL
      mov #CCIE, &TACCTL0
      mov #65000, &TACCR0
      eint
jimmyloop:
      jmp jimmyloop          
jimmyisr:
      xor.b #41h, &P1OUT
      reti
ORG     0FFF2h                 
DW      jimmyisr
ORG     0FFFEh                 
DW      0xf800 
org 0xf800                 
      mov #(WDTPW|WDTHOLD), &WDTCTL
      mov #0x280, SP
      mov.b #0x41,&P1DIR
      mov.b #0x41,P1OUT  
      mov #(TASSEL_2|MC_3), &TACTL
      mov #CCIE, &TACCTL0
      mov #65000, &TACCR0
      eint
jimmyloop:
      jmp jimmyloop          
jimmyisr:
      xor.b #41h, &P1OUT
      reti
ORG     0FFF2h                 
DW      jimmyisr
ORG     0FFFEh                 
DW      0xf800

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