ESP8266 Community Forum

- Wed Sep 25, 2019 9:41 pm #83927 When just reading Analog Inputs with Esp12 chip, the readings are accurate but when using it with NXP's MFRC630 NFC Front-end reader with iWander's library for arduino Ide, the output serial monitor constantly shows around 1024 with all the same environment as before. Is there a problem with the library or hardware itself?

Here's my code:

Code: Select all
#include <Arduino.h>
#include <SPI.h>
#include <mfrc630.h>
#include <ESP8266WiFi.h>
const char* ssid = "XXXXXXXXXXXX";
const char* password = "XXXXXXXXXXX";

#define CHIP_SELECT 5

IPAddress server(XXXXXXXXXX);
WiFiClient client;
int startmillis;
int startmillis1;
int hit1;
unsigned long currentmillis3;
unsigned long currentmillis4;
const unsigned long period = 30000;
const unsigned long interval4 = 100000;

void mfrc630_SPI_transfer(const uint8_t* tx, uint8_t* rx, uint16_t len) {
  for (uint16_t i=0; i < len; i++){
    rx[i] = SPI.transfer(tx[i]);
  }
}

void mfrc630_SPI_select() {
  SPI.beginTransaction(SPISettings(10000000, MSBFIRST, SPI_MODE0));  // gain control of SPI bus
  digitalWrite(CHIP_SELECT, LOW);
}

void mfrc630_SPI_unselect() {
  digitalWrite(CHIP_SELECT, HIGH);
  SPI.endTransaction();    // release the SPI bus
}

void mfrc630_MF_example_dump_arduino() {
  uint16_t atqa = mfrc630_iso14443a_REQA();
  if (atqa != 0) {

client.println(hit1);
 
    }

}

void setup() {


  WiFi.begin(ssid, password);
  if (WiFi.status() != WL_CONNECTED) {
      currentmillis3 = millis();
      static long prevmilll = 0;
  if (currentmillis3 - prevmilll >= period) {
      if (WiFi.status() != WL_CONNECTED) {
        digitalWrite(4, LOW);
      } else {
  prevmilll = currentmillis3;
  }
     }
    }


  // Set the chip select pin to output.
  pinMode(CHIP_SELECT, OUTPUT);

  // Start the SPI bus.
  SPI.begin();

  pinMode(15, OUTPUT);
digitalWrite(15,LOW);

  // Set the registers of the MFRC630 into the default.
  mfrc630_AN1102_recommended_registers(MFRC630_PROTO_ISO14443A_106_MILLER_MANCHESTER);

  // This are register required for my development platform, you probably have to change (or uncomment) them.
  mfrc630_write_reg(0x28, 0x8E);
  mfrc630_write_reg(0x29, 0x15);
  mfrc630_write_reg(0x2A, 0x11);
  mfrc630_write_reg(0x2B, 0x06);
}

void loop() {

  if(!client.connected()){
  digitalWrite(15,LOW);
  client.connect(server,1980);
  client.println("RC006\r");
  startmillis1 = millis();
          static long prevmill4 = 0;
            if (startmillis1 - prevmill4 >= period) {
              if(!client.connected()){         
    digitalWrite(4, LOW);
  }prevmill4 = startmillis1;}
 }else{
              currentmillis4 = millis();
  static long prevmill4 = 0;
  if (currentmillis4 - prevmill4 >= interval4) {
  client.println("RC006\r");
  prevmill4 = currentmillis4;
  }
 digitalWrite(15, HIGH);
  int hit = analogRead(A0);
  delay(3);
   hit1 = hit * (33 / 1024.0);
      if(hit1 > 5){
        mfrc630_MF_example_dump_arduino();

     }
 }

}