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LaunchPad(MSP430G2553).doc 76KB

LaunchPad 官方例程（无修改）

一切皆为 2012TI 杯电子设计大赛

//*************************************************************************

*****

// LaunchPad Lab2 - Software Toggle P1.0,

// MSP430G2xx2

// -----------------

// /|\| XIN|-

// | | |

// --|RST XOUT|-

// | |

// | P1.0|-->LED

//*************************************************************************

*****

#include <msp430g2553.h>

void main(void)

{

WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer

if (CALBC1_1MHZ == 0xFF || CALDCO_1MHZ == 0xFF)

{

while(1); // If calibration constants erased, trap CPU!!

}

// Configure Basic Clock

BCSCTL1 = CALBC1_1MHZ; // Set range

DCOCTL = CALDCO_1MHZ; // Set DCO step + modulation

BCSCTL3 |= LFXT1S_2; // Set LFXT1

P1DIR = BIT6; // P1.6 output (green LED)

P1OUT = 0; // LED off

IFG1 &= ~OFIFG; // Clear OSCFault flag

BCSCTL2 |=SELM_1 + DIVM_0; // Set MCLK

for(;;)

{

P1OUT = BIT6; // P1.6 on (green LED)

_delay_cycles(100);

P1OUT = 0; // green LED off

_delay_cycles(5000);

}

//*************************************************************************

*****

// LaunchPad Lab3 - Software Port Interrupt Service

// MSP430G2xx2

// -----------------

// /|\| XIN|-

// | | |

// --|RST XOUT|-

// /|\ | |

// --o--|P1.3 P1.0|-->LED

// \|/

//*************************************************************************

*****

#include <msp430g2553.h>

void main(void)

{

WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer

P1DIR |= BIT0; // Set P1.0 to output direction

P1IES |= BIT3; // P1.3 Hi/lo edge

P1IFG &= ~BIT3; // P1.3 IFG cleared

P1IE |= BIT3; // P1.3 interrupt enabled

_BIS_SR(LPM4_bits + GIE); // Enter LPM4 w/interrupt

}

// Port 1 interrupt service routine

#pragma vector=PORT1_VECTOR

__interrupt void Port_1(void)

{

if (P1IFG & BIT3)

{

P1OUT ^= BIT0; // P1.0 = toggle

P1IFG &= ~BIT3; // P1.3 IFG cleared

}

//*************************************************************************

*****

// LaunchPad Lab5 - ADC10, Sample A10 Temp and Convert to oC and oF

// MSP430G2452

// -----------------

// /|\| XIN|-

// | | |

// --|RST XOUT|-

// | |

// |A10 |

//*************************************************************************

*****

#include "msp430g2553.h"

long temp;

long IntDegF;

long IntDegC;

void main(void)

{

WDTCTL = WDTPW + WDTHOLD; // Stop WDT

//Configure ADC10

ADC10CTL1 = INCH_10 + ADC10DIV_3; // Choose ADC Channel as Temp

Sensor

ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON + ADC10IE;

//Choose ADC Ref source

__enable_interrupt(); // Enable interrupts.

TACCR0 = 30; // Delay to allow Ref to settle

TACCTL0 |= CCIE; // Compare-mode interrupt.

TACTL = TASSEL_2 | MC_1; // TACLK = SMCLK, Up mode.

LPM0; // Wait for delay.

TACCTL0 &= ~CCIE; // Disable timer Interrupt

__disable_interrupt();

while(1)

{

ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start

__bis_SR_register(LPM0_bits + GIE); // LPM0 with interrupts enabled

// oF = ((A10/1024)*1500mV)-923mV)*1/1.97mV = A10*761/1024 - 468

temp = ADC10MEM;

IntDegF = ((temp - 630) * 761) / 1024;

// oC = ((A10/1024)*1500mV)-986mV)*1/3.55mV = A10*423/1024 - 278

temp = ADC10MEM;

IntDegC = ((temp - 673) * 423) / 1024;

__no_operation(); // SET BREAKPOINT HERE

}

// ADC10 interrupt service routine

#pragma vector=ADC10_VECTOR

__interrupt void ADC10_ISR (void)

{

__bic_SR_register_on_exit(LPM0_bits); // Clear CPUOFF bit from 0(SR)

}

#pragma vector=TIMER0_A0_VECTOR

__interrupt void ta0_isr(void)

{

TACTL = 0;

__bic_SR_register_on_exit(LPM0_bits); // Clear CPUOFF bit from 0(SR)

}

//*************************************************************************

*****

// 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

// P1.5.

// ACLK = LFXT1 = VLO, MCLK = SMCLK = default DCO

// //* External watch crystal installed on XIN XOUT is required for ACLK *//

// MSP430F20xx

// -----------------

// /|\| XIN|-

// | | |

// --|RST XOUT|-

// | |

// | P1.4/SMCLK|-->SMCLK = Default DCO

// | P1.5|-->MCLK/10 = DCO/10

// | P1.0/ACLK|-->ACLK = VLO

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