/* --COPYRIGHT--,BSD_EX * Copyright (c) 2012, Texas Instruments Incorporated * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Texas Instruments Incorporated nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ******************************************************************************* * * MSP430 CODE EXAMPLE DISCLAIMER * * MSP430 code examples are self-contained low-level programs that typically * demonstrate a single peripheral function or device feature in a highly * concise manner. For this the code may rely on the device's power-on default * register values and settings such as the clock configuration and care must * be taken when combining code from several examples to avoid potential side * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware * for an API functional library-approach to peripheral configuration. * * --/COPYRIGHT--*/ //****************************************************************************** // MSP430F20xx Demo - Basic Clock, Output Buffered SMCLK, ACLK and MCLK/10 // // Description: Buffer ACLK on P2.0, default SMCLK(DCO) on P1.4 and MCLK/10 on // P1.1. // ACLK = LFXT1 = 32768, MCLK = SMCLK = default DCO // //* External watch crystal installed on XIN XOUT is required for ACLK *// // // MSP430F20xx // ----------------- // /|\| XIN|- // | | | 32kHz // --|RST XOUT|- // | | // | P1.4/SMCLK|-->SMCLK = Default DCO // | P1.1|-->MCLK/10 = DCO/10 // | P1.0/ACLK|-->ACLK = 32kHz // // M. Buccini / L. Westlund // Texas Instruments Inc. // October 2005 // Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.40A //****************************************************************************** #include int main(void) { WDTCTL = WDTPW +WDTHOLD; // Stop Watchdog Timer P1DIR |= 0x13; // P1.0,1 and P1.4 outputs P1SEL |= 0x11; // P1.0,4 ACLK, SMCLK output while(1) { P1OUT |= 0x02; // P1.1 = 1 P1OUT &= ~0x02; // P1.1 = 0 } }