LaunchPad(MSP430G2553) 官方例程

// MSP430xG46x Demo - FLL+, Runs Internal DCO at 8MHz
//
// Description: This program demonstrates setting the internal DCO to run at
// 8MHz with auto-calibration by the FLL+.
LaunchPad
一切皆为2012TI杯电子设计大赛
1.
//******************************************************************************
// LaunchPad Lab2 - Software Toggle P1.0,
//
#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!!
//
// MSP430G2xx2
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// /|\ | |
// --o--|P1.3 P1.0|-->LED
// \|/
//
//******************************************************************************
{
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
// MSP430G2xx2
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// | P1.0|-->LED
//
//******************************************************************************
//
//******************************************************************************
#include "msp430g2553.h"
long temp;
long IntDegF;
long IntDegC;
void main(void)
// oC = ((A10/1024)*1500mV)-986mV)*1/3.55mV = A10*423/1024 - 278
temp = ADC10MEM;
IntDegC = ((temp - 673) * 423) / 1024;
__no_operation(); // SET BREAKPOINT HERE
P1OUT = 0;// green LED off
_delay_cycles(5000);
}
}
2.
//******************************************************************************
// LaunchPad Lab3 - Software Port Interrupt Service
// Texas Instruments Inc.
// October 2005
// Built with IAR Embedded Workbench Version: 3.40A
//******************************************************************************
__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.
// ACLK = LFXT1 = 32768Hz, MCLK = SMCLK = DCO = (121+1) x 2 x ACLK = 7995392Hz
// //* An external watch crystal between XIN & XOUT is required for ACLK *//
LPM0; // Wait for delay.
TACCTL0 &= ~CCIE; // Disable timer Interrupt
__disable_interrupt();
while(1)
{
ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// | P1.4/SMCLK|-->SMCLK = Default DCO
// | P1.5|-->MCLK/10 = DCO/10
// | P1.0/ACLK|-->ACLK = VLO
//
// M. Buccini / L. Westlund
// P1.5.
// ACLK = LFXT1 = VLO, MCLK = SMCLK = default DCO
// //* External watch crystal installed on XIN XOUT is required for ACLK *//
//
// MSP430F20xx
// -----------------
}
// 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)
w P1.5 = 1,通过开关P1.5来体现MCLK，这两条指令的周期大概为SMCLK的1/10
P1OUT &= ~0x20;//20;
}
}
5.
//******************************************************************************
// LaunchPad Lab5 - ADC10, Sample A10 Temp and Convert to oC and oF
//
// MSP430G2452
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// |A10 |
// 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
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{
if (P1IFG & BIT3)
{
P1OUT ^= BIT0; // P1.0 = toggle
P1IFG &= ~BIT3; // P1.3 IFG cleared
}
}
3.
//******************************************************************************
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);
#include <msp430x20x3.h>
unsigned char s;
void main(void)
{
WDTCTL = WDTPW +WDTHOLD; // Stop Watchdog Timer