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//***************************************************************************************
// MSP430 Blink the LED Demo - Software Toggle P1.0
//
// Description; Toggle P1.0 by xor'ing P1.0 inside of a software loop.
// ACLK = n/a, MCLK = SMCLK = default DCO
//
// MSP430x5xx
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// | P1.0|-->LED
//
// J. Stevenson
// Texas Instruments, Inc
// July 2011
// Built with Code Composer Studio v5
//***************************************************************************************
#include <msp430.h>
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer ---------------------------------看门狗使用是不是都是这样子的？
P1DIR |= 0x01; // Set P1.0 to output direction
for(;;) {
volatile unsigned int i; // volatile to prevent optimization
P1OUT ^= 0x01; // Toggle P1.0 using exclusive-OR 这句是什么意思？
i = 10000; // SW Delay
do i--;
while(i != 0);
}
return 0;
}
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