EC-M11-EG-C4-B95 – USER GUIDE

Programming  #

The NORVI EC-M11-EG-C4-B95 has a mini USB port for serial connection with the SoC for programming. Any ESP32-supported programming IDE can be used to program the controller. Follow this guide to programming NORVI ESP32-based controllers with the Arduino IDE.

SoC: ESP32-WROOM32
Programming Port: USB UART

8-pin Connector and wire harness #

Pin Description #

8P Male	Wire color	I/O Configuration
1	White	Thermocouple +
2	Brown	Thermocouple –
3	Green	–
4	Yellow	–
5	Gray	–
6	Pink	–
7	Blue	Power+
8	Red	Power-

Thermocouple Input #

SPI MISO	GPIO19
SPI SCK	GPIO18
CS	GPIO5

Programming Thermocouple Inputs  #

#include <SPI.h>
#include "Adafruit_MAX31855.h"
#define MAXDO  19
#define MAXCS   5
#define MAXCLK 18                // Initialize the Thermocouple
Adafruit_MAX31855 thermocouple(MAXCLK, MAXCS, MAXDO);

void setup() {
  Serial.begin(115200);
  Serial.println("MAX31855 test");             // Wait for MAX chip to stabilize
  delay(500);
  Serial.print("Initializing sensor...");
  if (!thermocouple.begin()) {
    Serial.println("ERROR.");
    while (1) delay(10);
  }
  Serial.println("DONE.");
}

void loop() {
  Serial.print("Internal Temp = ");
  Serial.println(thermocouple.readInternal());
  double c = thermocouple.readCelsius();
  if (isnan(c)) {
    Serial.println("Thermocouple fault(s) detected!");
    uint8_t e = thermocouple.readError();
    if (e & MAX31855_FAULT_OPEN) Serial.println("FAULT: Thermocouple is open - no connections.");
    if (e & MAX31855_FAULT_SHORT_GND) Serial.println("FAULT: Thermocouple is short-circuited to GND.");
    if (e & MAX31855_FAULT_SHORT_VCC) Serial.println("FAULT: Thermocouple is short-circuited to VCC.");
  } 
  else {
    Serial.print("C = ");
    Serial.println(c);
  }           
  //Serial.print("F = ");
  //Serial.println(thermocouple.readFahrenheit());
  Serial.println("");
  Serial.print("Analog Read : ");
  Serial.print(analogRead(36));
  Serial.println("");
  delay(1000);
}

NB-IoT Module #

Modem	NB-101
RX	GPIO25
TX	GPIO26
POWER	GPIO22
RESET	GPIO17

Programming NB-IoT #

const int GSM_RST = 17;        // Define the pin for modem reset
const int GSM_PWR_KEY = 22;    // Define the pin for modem power key
const int MODEM_RX = 25;      // Define the pin for ESP32's RX to modem's TX
const int MODEM_TX = 26;      // Define the pin for ESP32's TX to modem's RX

void setup() {
  pinMode(GSM_RST, OUTPUT);
  pinMode(GSM_PWR_KEY, OUTPUT);
  digitalWrite(GSM_PWR_KEY, HIGH);  // Set modem to flight mode
  digitalWrite(GSM_RST, HIGH);
  delay(1000);
  digitalWrite(GSM_RST, LOW);
  delay(1000);
  digitalWrite(GSM_RST, HIGH);
  delay(1000);
  Serial.begin(9600);  // Initialize the serial monitor
  Serial2.begin(9600, SERIAL_8N1, MODEM_RX, MODEM_TX);  
  // Initialize communication with modem
  Serial.println("SIM AT START >>>>>>>>>>>>>>");
  delay(2000);
  Serial.flush();
  Serial2.println("AT+NCONFIG=AUTOCONNECT,TRUE");
  delay(2000);
  while (Serial2.available()) {
    char response = Serial2.read();
    Serial.write(response);
  }
  Serial2.println("AT");
  delay(2000);
  while (Serial2.available()) {
    char response = Serial2.read();
    Serial.write(response);
  }
  Serial2.println("AT+CEREG?");
  delay(2000);
  while (Serial2.available()) {
    char response = Serial2.read();
    Serial.write(response);
  }
  Serial.flush(); 
}

void loop() {
  Serial.print(".");
  Serial2.println("AT");
  while (Serial2.available()) {
    char response = Serial2.read();
    Serial.write(response);
  }
  delay(5000);
  Serial2.println("AT+CEREG?");
  delay(2000);
  while (Serial2.available()) {
    char response = Serial2.read();
    Serial.write(response);
  }
}