HELP ME! Probably syntax error

Projects General Guidance
1

re.ino (2.0 KB

#include <SPI.h>
#include <WiFiNINA.h>
#include <Adafruit_PN532.h>
#include <ArduinoHttpClient.h> // include the 4D Systems display library

#define PN532_SCK  (13)
#define PN532_MOSI (11)
#define PN532_SS   (10)
#define PN532_MISO (12)

Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS);

char ssid[] = "Redmi";     // your network SSID (name)
char password[] = "****"; // your network password

char serverAddress[] = "192.168.214.97"; // server address
int port = 80;

WiFiClient wifi;
HttpClient client = HttpClient(wifi, serverAddress, port);
int status = WL_IDLE_STATUS;
uint8_t card;

void setup() {
  Serial.begin(9600);

  nfc.begin();

  // attempt to connect to Wifi network
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid, password);
    delay(5000);  // wait 5 seconds for connection
  }
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

   // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

}

void loop() {
  boolean success;
  uint8_t uid[] = {0, 0, 0, 0, 0, 0, 0};
  uint8_t uidLength;

  success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
  if (success) {
    Serial.print("UID Value: ");
    for (uint8_t i = 0; i < uidLength; i++) {
      card = uid[i];
      Serial.print(card);
    }
    Serial.println("");
    delay(500);
  
  }

  Serial.println("making a POST request");
    String contentType = "application/x-www-form-urlencoded";
    String postData = "uid=" + String(card);
    client.beginRequest();
    client.post("/NFC/addd.php", contentType, postData);

    // read the status code and body of the response
    int statusCode = client.responseStatusCode();
    String response = client.responseBody();

    Serial.print("Status code: ");
    Serial.println(statusCode);
    Serial.print("Response: ");
    Serial.println(response);

    Serial.println("Wait five seconds");
    delay(5000);
}

looks like LOOP function isn't running, anytime i scan a card it just hang

2

If it compiles, there aren't any syntax errors!

Does this last printing in setup() come out correctly?

   // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

a7

1 Like
3

yep, it just like the loop fuction makes it hangs

5

add this just under nfc.begin();


  uint32_t versiondata = nfc.getFirmwareVersion();
  if (! versiondata) {
    Serial.print("Didn't find PN53x board");
    while (1); // halt
  }

see if it's not finding the device..

and yeah, should probably move the posting code to only happen when it has a good read..

good luck.. ~q

6

after debugging, i realise the program dosen't run past this line

success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
7

i tried this but tells me it dosen't find the PN532 board meanwhile, i tried it with another program that just read the unique id number and it works perfectly

8

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