Revision 1:3781e9bf2c47, committed 2018-07-12

Comitter:

shivanandgowdakr

Date:

Thu Jul 12 09:57:11 2018 +0000

Parent:

0:1a3020ba8001

Commit message:

DFROBOT UHF RFID; ; ;

Changed in this revision

--- a/main.cpp	Thu Jul 12 06:57:41 2018 +0000
+++ b/main.cpp	Thu Jul 12 09:57:11 2018 +0000
@@ -1,39 +1,73 @@
+
 #include "mbed.h"
 
 
+Serial RfidUHF(PC_12,PD_2);
 
 
-// initialize the library with the numbers of the interface pins
-DigitalOut led(LED1);
-Serial EM18Rfid(PC_12,PD_2);
-
-int count = 0;          //integer for storing character of ID
+unsigned char StopReadCode[5] = {0xa0,0x03,0xa8,0x00,0xb5};//Stop reading the label code
+unsigned char ResetCode[5]={0xa0,0x03,0x65,0x00,0xf8};//Reset code
+unsigned char StopReadCodeCB[6]={0xe0,0x04,0xa8,0x00,0x00,0x74};//Stop reading code success and return the value
+unsigned char ResetCodeCB[6]={0xe4,0x04,0x65,0x00,0x00,0xb3};//Reset code success and return the value
+unsigned char data[6]={};
 
-char input[12];//memory for storing 12 characters of ID
-
-int main()
-{
- EM18Rfid.baud(9600); //Baud Rate 9600                             
-
+    int main()
+    {
+         int i;
+          int n=1;
+          
+       
         while(true)
-        
-        {    
-        
-        while(EM18Rfid.readable() && count < 12)          // Read 12 characters and store them in input array
-            
-            {
-                input[count] = EM18Rfid.getc();
-                count++;
-                    if (count==12)
-                    {        
-                    led=1;
-                    input[count]='\0';
-                    printf("Read Tag Id is : %s\r\n",input);  
-                    count = 0;// once 12 characters are read get to start and wait for 1 second  before reading next ID
-                    wait(1);
-                    led=0;                
+        {
+         
+          wait(2.0);
+              while(n)
+              {
+                for(i=0; i<5;i++)
+                RfidUHF.putc(StopReadCode[i]);
+                wait(0.2);
+                    if(RfidUHF.readable())
+                    {
+                      for(i=0;i<6;i++)
+                          {
+                            data[i]=RfidUHF.getc();
+                            wait_ms(1);
+                          }
+                      for(i=0;i<6;i++)
+                          {
+                            if(data[i]==StopReadCodeCB[i])
+                              n=0;
+                            else
+                              n=1;
+                          }
                     }
-            }
-        
-        } 
-}           
\ No newline at end of file
+                    wait(0.5);
+             }
+                 
+                  n=1;
+                  
+                  while(n)
+                  {
+                    for(i=0; i<5;i++)
+                    RfidUHF.putc(ResetCode[i]);
+                    
+                    wait(0.2);
+                        if(RfidUHF.readable())
+                        {
+                              for(i=0;i<6;i++)
+                              {
+                                data[i]=RfidUHF.getc();
+                                wait(1);
+                              }
+                              for(i=0;i<6;i++)
+                              {
+                                if(data[i]==ResetCodeCB[i])
+                                  n=0;
+                                else
+                                  n=1;
+                              }
+                         }
+                 wait(0.5);
+                } 
+        }
+    }
\ No newline at end of file