Diff: main.cpp

Revision:

0:fac6c6a73e5f

Child:

1:0f0f31f25bbd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Feb 12 10:26:36 2015 +0000
@@ -0,0 +1,87 @@
+
+#include "SRF05.h"
+#include "Arduino.h"
+
+SRF05 srf(D6, D5);//trig;echo
+
+//*******************************************************************************
+//----------------本例程仅供学习使用，未经作者允许，不得用于其他用途。-----------
+//------------------------版权所有，仿冒必究！-----------------------------------
+//----------------1.开发环境:Arduino IDE-----------------------------------------
+//----------------2.测试使用开发板型号：Arduino Leonardo or Arduino UNO R3-------
+//----------------3.单片机使用晶振：16M------------------------------------------
+//----------------4.淘宝网址：http://xmdzpj.taobao.com---------------------------
+//----------------5.作者：真红炎神---------------------------------------------
+//*******************************************************************************/
+
+int latchPin = 4;
+int clockPin =7;
+int dataPin = 8; //这里定义了那三个脚
+
+unsigned char Dis_table[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0X80,0X90};    //LED状态显示的变量
+unsigned char Dis_buf[]   = {0xF1,0xF2,0xF4,0xF8};
+unsigned char disbuff[]  =  {0, 0, 0, 0};
+
+
+void setup ()
+{
+  pinMode(latchPin,OUTPUT);
+  pinMode(clockPin,OUTPUT);
+  pinMode(dataPin,OUTPUT); //让三个脚都是输出状态
+
+}
+
+void display()
+{
+  for(char i=0; i<=3; i++)//扫描四个数码管
+  {
+    digitalWrite(latchPin,LOW); //将ST_CP口上面加低电平让芯片准备好接收数据
+    if(i==1)
+    {
+    shiftOut(dataPin,clockPin,MSBFIRST,Dis_table[disbuff[i]]&0x7F); //发送显示码
+    }
+    else
+    shiftOut(dataPin,clockPin,MSBFIRST,Dis_table[disbuff[i]]);
+    shiftOut(dataPin,clockPin,MSBFIRST,Dis_buf[i] );  //发送通值                                                    
+    //串行数据输入引脚为dataPin，时钟引脚为clockPin，执行MSB有限发送，发送数据table[i]
+    digitalWrite(latchPin,HIGH); //将ST_CP这个针脚恢复到高电平
+    delay(2);               //延时2ms 
+  }
+  
+}
+
+void loop()
+{
+  
+  float val;
+   val=srf*100;
+   /*
+  unsigned char t=((val%1000)/100);
+  
+  disbuff[0]= (unsigned char)(val/1000);
+  disbuff[1]= (unsigned char)((val%1000)/100);
+  disbuff[2]= (unsigned char)((val%100)/10);
+  */
+  disbuff[0]= (unsigned char)(val/1000);
+  disbuff[1]= (val/100)-disbuff[0]*10;
+  disbuff[2]= (val/10)-(disbuff[0]*100+disbuff[1]*10);
+  disbuff[3]= 0;
+
+  for(char time=0;time<30;time++)  //显示30次,当作延时,以免读取过快
+ { 
+  display();
+ }
+}
+
+
+
+
+main()
+{
+    setup();
+    while(1)
+    {
+        loop();
+    }
+}
+