//****************************************************************************** // MSP430G2xx2 Demo - Timer_A, Toggle P1.1/TA0, Up Mode, 32kHz ACLK // // Description: Toggle P1.1 using hardware TA0 output Timer_A is configured // for up mode with CCR0 defining period, TA0 also output on P1.1 In this // example, CCR0 is loaded with 10-1 and TA0 will toggle P1.1 at TACLK/10 // Thus the output frequency on P1.1 will be the TACLK/20 No CPU or software // resources required Normal operating mode is LPM3 // ACLK= TACLK = 32kHz, MCLK = default DCO // As coded with TACLK = ACLK, P1.1 output frequency = 32768/20 = 1.6384kHz // //* External watch crystal installed on XIN XOUT is required for ACLK *// // // MSP430G2xx2 // // /|\| XIN|// | | | 32kHz // |RST XOUT|// | | // | P1.1/TA0| > ACLK/20 // // D Dang // Texas Instruments Inc // December 2010 // Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10 //****************************************************************************** #include void main(void) { WDTCTL = WDTPW + WDTHOLD; P1DIR |= 0x02; P1SEL |= 0x02; CCTL0 = OUTMOD_4; CCR0 = 10-1; TACTL = TASSEL_1 + MC_1; _BIS_SR(LPM3_bits); } // // // // Stop P1.1 P1.1 CCR0 WDT output option select toggle mode // ACLK, upmode // Enter LPM3 w/interrupt