.include "msp430g2553.inc" org 0xC000 START: mov.w #WDTPW|WDTHOLD, &WDTCTL mov.b #0x41, &P1DIR ; #01000001b (P1.6 == LED2, P1.0 == LED1) mov.w #0x01, R8 ; #00000001b (start on LED1) REPEAT: mov.b R8, &P1OUT xor.b #0x41, R8 ; #00000001b -> #01000000b -> ... (LED0 -> LED1 -> ...) mov.w #40000, R9 ; counts to decrement before blink mov.w #40000, R10 ; counts to decrement (2nd dec, since 16-bit max value is 65536) WAITER1: dec R9 jnz WAITER1 ; R9 not yet 0 WAITER2: dec R10 jnz WAITER2 ; R10 not yet 0 jmp REPEAT ; R9, R10 == 0; blink other LED org 0xfffe dw START ; set reset vector to 'init' label