;******************************************************************************* ; MSP430G2xx2 Demo - WDT, Toggle P1.0, Interval Overflow ISR, DCO SMCLK ; ; Description: Toggle P1.0 using software timed by the WDT ISR Toggle rate ; is approximately 30ms based on default DCO/SMCLK clock source ; used in this example for the WDT ; ACLK = n/a, MCLK = SMCLK = default DCO ; ; MSP430G2xx2 ; ; /|\| XIN|; | | | ; |RST XOUT|; | | ; | P1.0| >LED ; ; D Dang ; Texas Instruments Inc ; December 2010 ; Built with IAR Embedded Workbench Version: 5.10 ;******************************************************************************* #include "msp430g2452.h" ; ORG 0F800h ; Program Reset ; RESET mov.w #0280h,SP ; Initialize stackpointer SetupWDT mov.w #WDT_MDLY_32,&WDTCTL ; WDT ~30ms interval timer bis.b #WDTIE,&IE1 ; Enable WDT interrupt SetupP1 bis.b #001h,&P1DIR ; P1.0 output ; Mainloop bis.w #CPUOFF+GIE,SR ; CPU off, enable interrupts nop ; Required only for debugger ; ; WDT_ISR; Toggle P1.0 ; xor.b #001h,&P1OUT ; Toggle P1.0 reti ; ; ; ; Interrupt Vectors ; ORG 0FFFEh ; MSP430 RESET Vector DW RESET ; ORG 0FFF4h ; WDT Vector DW WDT_ISR ; END