[讨论]

msp430 hc_sr04编程为啥430P2in 检测不到有高电平，屏没数

2013-8-27 09:19:50 3370

0 #include #include "msp430.h"#include "HAL_PMM.h"#include "HAL_UCS.h"#include "HAL_Board.h"#include "HAL_Buttons.h"#include "HAL_Dogs102x6.h"#include "HAL_Menu.h"#include "HAL_Wheel.h"#include "LPM.h"#include "PMM.h"//#include "lab1.h" #define trig BIT4 //P2.4-->DQ#define trig1 P2OUT \|= BIT4 //DS18B20接口为P2.4口#define trig0 P2OUT &= ~BIT4#define tri P6OUT \|= BIT7 //DS18B20接口为P2.4口#define tri0 P6OUT &= ~BIT7//#define ecoh BIT3 //P2.4-->DQ//#define ecoh1 P2IN \|= BIT3 //DS18B20接口为P2.4口//#define ecoh0 P2IN &= ~BIT3//P2REN =BIT3;void start();//void delay( int m);unsigned int a=0; unsigned char table1[10] = {'0','1','2','3','4','5','6','7','8','9'};unsigned int s,k; void main(void){ WDTCTL = WDTPW + WDTHOLD; // Stop WDT P2DIR &= ~BIT3; P6DIR \|=BIT7; P2REN \|=BIT3; P2OUT &=~BIT3; _EINT(); Board_init(); uint8_t contrast = ((unsigned char )contrastSetpointAddress); //读取FLASH中对比度值 uint8_t brightness = ((unsigned char )brightnessSetpointAddress); //读取FLASH中背光值 Dogs102x6_init(); Dogs102x6_backlightinit(); // __enable_interrupt(); Dogs102x6_setBacklight(brightness); //设置初始背光值 Dogs102x6_setContrast(contrast); //设置初始对比度值 Dogs102x6_clearScreen(); TA0CCR0 =5; TA0CTL = TASSEL_2 + MC_1+TACLR ; // SMCLK, upmode, clear TAR while(1) { tri; start(); while((P2IN&0X08)==0); //低电平等待 TA0CCTL0 \|= CCIE; while((P2IN&0X08)==1);//高电平等待 TA0CCTL0 &= ~CCIE; //tri0; // s=a*1.87/100; Dogs102x6_charDraw(2,12,table1[a/100],0); // Dogs102x6_charDraw(2,12,table1[temp%1000/100],0); Dogs102x6_charDraw(2,18,table1[a%100/10],0); Dogs102x6_charDraw(2,36,table1[a%10],0); __delay_cycles(50); }} void start(){ trig1; __delay_cycles(6); trig0; }#pragma vector=TIMER0_A0_VECTOR__interrupt void TIMER0_A0_ISR(void){ a++; if((P2IN&0X08)==0) TA0CCTL0 &= ~CCIE;} 0
2013-8-27 09:19:50　　评论淘帖0 举报相关推荐 • MSP430心率检测 26 • MSP430编程 1392 • HC-SR04超声波模块检测不到高电平 5494 • MSP430编程问题 3546 • MSP430 LIN总线编程 22 • msp430系列程序p2 7 • HC_SR04超声波测距模块资料 13 • MSP430入门 0 • MSP430专题 7 • MSP430原理与应用教程课件 12