RFID Reader ID-3LA

[jeti]

Hello everybody,

i am trying to establish a node with a RFID reader to recognice which Resident is at home. Therefore I have a ID-3LA including antenna.
The reader works fin with this sketch:

#include <SoftwareSerial.h>

SoftwareSerial rfid = SoftwareSerial(5, 6);
String msg;

void setup()  
{
  Serial.begin(9600);
  rfid.begin(9600);
  Serial.println("Ready");
}

void loop(){
  msg = "";
  
  while(rfid.available()>0) {
    msg += char(rfid.read());
    delay(1);
  }
  
  if(msg.length() >= 13) {
     msg=msg.substring(1,13);
     tone(4, 262, 100);
     Serial.println(msg);
  }
}

this code results on the serial Monitor with 9600 baud in something like:

Ready
0100B058FD14

which is excactly what i want (for now).

But Iam strugeling implementing it into MySensors, that is what i came up with:

/**
 * ID-3LA       Arduino
 * -----      -------
 * GND   ->   GND
 * VCC   ->   +3.3V
 * D0   ->   D5
 * D1   ->   D6
 * FORM -> GND
 */

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#define MY_NODE_ID 102 

#include <SPI.h>
#include <MySensors.h>  
#include <SoftwareSerial.h>

SoftwareSerial rfid = SoftwareSerial(5, 6);
String key;

#define CHILD_ID 1   // Id of the sensor child

MyMessage KeyMsg(CHILD_ID, V_VAR1);

void setup()  
{
  Serial.begin(9600);
  rfid.begin(9600);
  //Serial.println("Ready");
}

void presentation()  {
  sendSketchInfo("RFID Reader", "1.0");
  present(CHILD_ID, S_CUSTOM);
}

void loop(){
  key = "";
  
  while(rfid.available()>0) {
    key += char(rfid.read());
    delay(1);
  }
  
  if(key.length() >= 13) {
     key=key.substring(1,13);
     Serial.println(key);
     send(KeyMsg.set(key)); 
     
     
  }
} 

but i do not get any readings... as i still consider myself as a started i have very little clou where to beginn finding the wrong/missing parts. It would be great to get some indications or tips.

thanks in advance!

[mfalkvidd]

@jeti could you post the debug output of the node? I looked at the sketch but didn't notice anyhong suspicious.

[jeti]

so this is the debug:
I also just figurer out, that i can only see the tag code when i use 9600 baud, thats why the first line is messed up. When i use 115200 baud the tag ID does not show up...

¸Ëÿi"ùŸÒ9q„Š3ñ“â@Ù8>‹`ÿÊ<›Ð%ŠÆ/t6þTSP:MSG:SEND 102-102-0-0 s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=ok:0100
TSP:MSG:SEND 102-102-0-0 s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=ok:2.0.0
TSP:MSG:SEND 102-102-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=ok:0
TSP:MSG:READ 0-0-102 s=255,c=3,t=15,pt=6,l=2,sg=0:0100
TSP:MSG:READ 0-0-102 s=255,c=3,t=6,pt=0,l=1,sg=0:M
TSP:MSG:SEND 102-102-0-0 s=255,c=3,t=11,pt=0,l=11,sg=0,ft=0,st=ok:RFID Reader
TSP:MSG:SEND 102-102-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=ok:1.0
TSP:MSG:SEND 102-102-0-0 s=1,c=0,t=23,pt=0,l=0,sg=0,ft=0,st=ok:
Request registration...
TSP:MSG:SEND 102-102-0-0 s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=ok:2
TSP:MSG:READ 0-0-102 s=255,c=3,t=27,pt=1,l=1,sg=0:1
Node registration=1
Init complete, id=102, parent=0, distance=1, registration=1
TSP:MSG:READ 154-154-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
TSP:MSG:BC
0100B058FD1
TSP:MSG:SEND 102-102-0-0 s=1,c=1,t=47,pt=1,l=1,sg=0,ft=0,st=ok:1
0100B058FD1
TSP:MSG:SEND 102-102-0-0 s=1,c=1,t=47,pt=1,l=1,sg=0,ft=0,st=ok:1
TSP:MSG:READ 154-154-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
TSP:MSG:BC

can it be the case the the format of the tag ID is not correct?

thanks

[mfalkvidd]

@jeti Looks like it has no trouble reading the tag, the print fro the node matches the one you got with the first sketch. st=ok means that the gateway acknowledged the message so it got through alright.

What does the gateway receive? (could you post the debug log?)

[mfalkvidd]

I think the problem is that Domoticz doesn't support V_VAR1. This post suggests to use V_TEXT instead.

[jeti]

I am using FHEM as controller.

Log of the gateway:

0;255;3;0;9;TSP:MSG:READ 102-102-0 s=1,c=1,t=24,pt=1,l=1,sg=0:1
102;1;1;0;24;1

so it receives a "1" correct?
Can Mysesnors handle strings?

[mfalkvidd]

@jeti Yes that is correct.

https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help/4 has info on how to read the debug messages.

pt=1 means payload type 1. Payload type 1 is "byte". According to https://www.mysensors.org/download/serial_api_20#variable-types V_VAR1 has a custom type. I don't know what that means, but it looks like the MySensors library interprets that as a byte, which won't be very useful for sending an RFID tag. I have not used the custom variable types and I don't know how they work unfortunately.

Yes, MySensors handles strings. Use S_INFO and V_TEXT as suggested in the post I linked to above.

[jeti]

@mfalkvidd:
also with S_INFO amd V_TEXT the gateway only receives a "1"...

I just searched and played a little more and i got i working now:

 /**
 * ID-3LA       Arduino
 * -----      -------
 * GND   ->   GND
 * VCC   ->   +3.3V
 * D0   ->   D5
 * D1   ->   D6
 * FORM -> GND
 */

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#define MY_NODE_ID 102 

#include <SPI.h>
#include <MySensors.h>  
#include <SoftwareSerial.h>

SoftwareSerial rfid = SoftwareSerial(5, 6);
int  val = 0; 
char code[10]; 
int bytesread = 0; 

#define CHILD_ID 1   // Id of the sensor child

MyMessage KeyMsg(CHILD_ID, V_VAR1);

void setup()  
{
  Serial.begin(9600);
  rfid.begin(9600);
  //Serial.println("Ready");
}

void presentation()  {
  sendSketchInfo("RFID Reader", "1.0");
  present(CHILD_ID, S_CUSTOM);
}

void loop(){
if(rfid.available() > 0) {          // if data available from reader 
    if((val = rfid.read()) == 10) {   // check for header 
      bytesread = 0; 
      while(bytesread<10) {              // read 10 digit code 
        if( rfid.available() > 0) { 
          val = rfid.read(); 
          if((val == 10)||(val == 13)) { // if header or stop bytes before the 10 digit reading 
            break;                       // stop reading 
          } 
          code[bytesread] = val;         // add the digit           
          bytesread++;                   // ready to read next digit  
        } 
      } 
      if(bytesread == 10) {              // if 10 digit read is complete 
        Serial.print("TAG code is: ");   // possibly a good TAG 
        Serial.println(code);            // print the TAG code 
      } 
      bytesread = 0; 
     Serial.println(code);
     send(KeyMsg.set(code)); 
     
    }
  }
}

The issue seemed to be the string, now with a char it works...

now i only need to get reset the reader every now an then to recognice if a tag is removed. The reader only updates when a tag enters the reading adistance but not when it leaves it.

thanks!

[mfalkvidd]

@jeti great work!