Soliddigi UHF RFID 读写器和Arduino Mege128通信程序
以下程序实现如下功能：
1.自动扫描标签（如果没有扫描到标签，向串口发“No Tag”信息）
2.如果扫描到标签就把标签id发到串口,暂停停扫描20秒。然后循环自步骤1；
/*
The circuit:
* LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 11
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2
* LCD R/W pin to ground
* 10K resistor:
* ends to +5V and ground
* wiper to LCD VO pin (pin 3)
*/
// include the library code:
#include <LiquidCrystal.h>
#include <string.h>
#define BUFFSIZ 90
//RFID parser
char buffer_RFID[BUFFSIZ];
char buffidx_RFID;
char response_str[64];
char command_scantag[]={0x43,0x03,0x01};//const
char No_label[]={0x44,0x05,0x00,0x00,0x00};
char Receive_data[22];
unsigned char incomingByte,incomingByte1,incomingByte2;
unsigned char parsed_okay=0;
unsigned char tag_found_number;
unsigned int bytecount=0;
unsigned char cnt,cnt1;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup(){
parsed_okay=0;
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("Xbee UHFRFID Reader");
Serial.begin(9600);
Serial1.begin(115200);
for(char i=0;i<3;i++)
{
Serial1.print(command_scantag);
}
}
void loop()
{
while(Serial1.available())
{
incomingByte2= incomingByte1;
incomingByte1= incomingByte;
incomingByte = Serial1.read();
Receive_data[cnt]= incomingByte;
//Serial.print(incomingByte);
cnt++;
}
if(strcmp(Receive_data,No_label)==0)
{
Serial.println("No Tag");
cnt=0;
}
if(cnt>=22 && cnt%22==0 && Receive_data[0]==0x44 && Receive_data[1]==0x16)
{
cnt1=cnt/22;
for(unsigned char j=0;j<cnt1;j++)
{
//if(cnt==22)
//{
for(unsigned char i=j*22+10;i<j*22+22;i++)
{
Serial.print(Receive_data);
}
//}
}
for(unsigned char i=0;i<cnt;i++)
{
Receive_data=0x00;
}
cnt=0;
}
delay(500);
for(char i=0;i<3;i++)
{
Serial1.print(command_scantag);
}
delay(500);
} |
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