//****************************************************************************** // MSP430G2xx1 Demo - Basic Clock, Output Buffered clocks with preloaded DCO // calibration constants for BCSCTL1 and DCOCTL // // Description: Buffer ACLK on P2.0, default SMCLK(DCO) on P1.4 and MCLK/10 on // P1.1 DCO is software selectable to 1, 8, 12, or 16Mhz using calibration // contstants in INFOA // // ACLK = LFXT1 = 32768, MCLK = SMCLK = Selectable at 1, 8, 12 or 16Mhz // //* External watch crystal installed on XIN XOUT is required for ACLK *// // // MSP430G2xx1 // // /|\| XIN|// | | | 32kHz // |RST XOUT|// | | // | P1.4/SMCLK| >SMCLK = Default DCO // | P1.1| >MCLK/10 = DCO/10 // | P1.0/ACLK| >ACLK = 32kHz // // D Dang // Texas Instruments Inc // October 2010 // Built with IAR Embedded Workbench Version: 3.42A //****************************************************************************** #include void main(void) { WDTCTL = WDTPW +WDTHOLD; // Stop Watchdog Timer if (CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF) { while(1); } //1Mhz BCSCTL1 = CALBC1_1MHZ; DCOCTL = CALDCO_1MHZ; // If calibration constants erased // not load, trap CPU!! // Set range // Set DCO step + modulation */ /* //8Mhz BCSCTL1 = CALBC1_8MHZ; DCOCTL = CALDCO_8MHZ; // Set range // Set DCO step + modulation */ /* //12Mhz BCSCTL1 = CALBC1_12MHZ; DCOCTL = CALDCO_12MHZ; // Set range // Set DCO step + modulation*/ /* //16Mhz BCSCTL1 = CALBC1_16MHZ; DCOCTL = CALDCO_16MHZ; // Set range // Set DCO step + modulation*/ P1DIR |= 0x13; P1SEL |= 0x11; // P1.0,1 and P1.4 outputs // P1.0,4 ACLK, SMCLK output while(1) { P1OUT |= 0x02; P1OUT &= ~0x02; // P1.1 = // P1.1 = } }