Outils pour utilisateurs
id-12la
Différences
Ci-dessous, les différences entre deux révisions de la page.
| Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
|
id-12la [2016/05/23 15:20] colin |
id-12la [2018/05/26 03:14] (Version actuelle) colin |
||
|---|---|---|---|
| Ligne 1: | Ligne 1: | ||
| - | ====== RFID ====== | + | ====== ID12LA ====== |
| - | ID-12LA fonctionne jusqu'à environ 2.5 cm de distance | + | ID-12LA fonctionne jusqu'à environ 2.5 cm de distance. |
| + | Le rafraîchissement des données se fait à environ 8Hz. | ||
| Liens : | Liens : | ||
| Ligne 7: | Ligne 8: | ||
| [[http://bildr.org/2011/02/rfid-arduino/|http://bildr.org/2011/02/rfid-arduino/]] | [[http://bildr.org/2011/02/rfid-arduino/|http://bildr.org/2011/02/rfid-arduino/]] | ||
| [[https://hcgilje.wordpress.com/resources/rfid_id12_tagreader/|https://hcgilje.wordpress.com/resources/rfid_id12_tagreader/]] | [[https://hcgilje.wordpress.com/resources/rfid_id12_tagreader/|https://hcgilje.wordpress.com/resources/rfid_id12_tagreader/]] | ||
| + | [[https://www.raspberrypi.org/forums/viewtopic.php?t=31552|Raspberry]] | ||
| Datasheet : | Datasheet : | ||
| Ligne 13: | Ligne 15: | ||
| + | Attention au conflit de port sur l'entrée RX 0. | ||
| + | Il faut débrancher le port 0 pour téléverser le programme. | ||
| + | Pour cette raison, j'ai utilisé la librairie SoftwareSerial pour éviter ce problème. | ||
| + | |||
| + | Si 2 tags sont en même temps cela ne fonctionne pas ! | ||
| + | |||
| + | <code c> | ||
| + | /* | ||
| + | * Author : http://bildr.org/2011/02/rfid-arduino/ and Colin Bouvry | ||
| + | */ | ||
| + | |||
| + | #include <SoftwareSerial.h> | ||
| + | |||
| + | // ID12LA | ||
| + | const int RFIDResetPin = 13; | ||
| + | const int MAXCHARACTER = 10; | ||
| + | char tagString[MAXCHARACTER]; | ||
| + | unsigned long timeElapsedMs; | ||
| + | |||
| + | // software serial #2: RX = digital pin 8, TX = digital pin 9 | ||
| + | // on the Mega, use other pins instead, since 8 and 9 don't work on the Mega | ||
| + | SoftwareSerial portId12LA(8, 9); | ||
| + | |||
| + | void setup(){ | ||
| + | Serial.begin(9600); | ||
| + | |||
| + | // ID12LA | ||
| + | portId12LA.begin(9600); | ||
| + | pinMode(RFIDResetPin, OUTPUT); | ||
| + | digitalWrite(RFIDResetPin, HIGH); | ||
| + | } | ||
| + | |||
| + | void loop(){ | ||
| + | |||
| + | // ID12LA | ||
| + | |||
| + | if(millis() - timeElapsedMs > 150) | ||
| + | { | ||
| + | timeElapsedMs = millis(); | ||
| + | | ||
| + | int index = 0; | ||
| + | boolean bReading = false; | ||
| + | boolean bNewTag = false; | ||
| + | portId12LA.listen(); | ||
| + | while(portId12LA.available()){ | ||
| + | | ||
| + | int readByte = portId12LA.read(); //read next available byte | ||
| + | | ||
| + | if(readByte == 2) | ||
| + | { | ||
| + | bReading = true; //begining of tag | ||
| + | index = 0; | ||
| + | } | ||
| + | if(readByte == 3) | ||
| + | { | ||
| + | bReading = false; //end of tag | ||
| + | bNewTag = true; | ||
| + | } | ||
| + | | ||
| + | if(bReading && readByte != 2 && readByte != 10 && readByte != 13){ | ||
| + | //store the tag | ||
| + | if(index < MAXCHARACTER) | ||
| + | tagString[index] = readByte; | ||
| + | index ++; | ||
| + | } | ||
| + | } | ||
| + | | ||
| + | if(bNewTag) | ||
| + | sendTag(tagString); //Send tag | ||
| + | | ||
| + | clearTag(tagString); //Clear the char of all value | ||
| + | resetReader(); //Reset the RFID reader | ||
| + | } | ||
| + | } | ||
| + | |||
| + | |||
| + | void sendTag(char tag[]){ | ||
| + | /////////////////////////////////// | ||
| + | //Check the read tag against known tags | ||
| + | /////////////////////////////////// | ||
| + | if(strlen(tag) == 0) | ||
| + | return; //empty, no need to contunue | ||
| + | Serial.println(tag); //read out any unknown tag | ||
| + | } | ||
| + | |||
| + | void resetReader(){ | ||
| + | /////////////////////////////////// | ||
| + | //Reset the RFID reader to read again. | ||
| + | /////////////////////////////////// | ||
| + | digitalWrite(RFIDResetPin, LOW); | ||
| + | digitalWrite(RFIDResetPin, HIGH); | ||
| + | //delay(150); //150 | ||
| + | } | ||
| + | |||
| + | void clearTag(char one[]){ | ||
| + | /////////////////////////////////// | ||
| + | //clear the char array by filling with null - ASCII 0 | ||
| + | //Will think same tag has been read otherwise | ||
| + | /////////////////////////////////// | ||
| + | for(int i = 0; i < strlen(one); i++){ | ||
| + | one[i] = 0; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | </code> | ||
id-12la.1464009627.txt.gz · Dernière modification: 2016/05/23 15:20 par colin
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