---
title: "EC-M11-EG-C4-S – USER GUIDE"
description: "## **Programming**  The NORVI EC-M11-EG-C4-S 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…"
url: "https://norvi.io/docs/norvi-ec-m11-eg-c4-s-user-guide/"
updated: "2026-03-24"
category: "OTHER PRODUCTS / EC-M11-EG LoRa / EC-M11-EG-C4-S"
---

# EC-M11-EG-C4-S – USER GUIDE

## **Programming** 

The NORVI EC-M11-EG-C4-S 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 **

![](https://norvi.io/wp-content/uploads/2024/09/345-37.jpg)

### **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** **

```cpp

                #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);
}
```

## **LoRa Transceiver Module**

| Specification | Long Range(LoRa) |
| --- | --- |
| RF Transceiver | Order depending on regional regulations |
| SPI MISO | GPIO19 |
| SPI MOSI | GPIO23 |
| SPI SCK | GPIO18 |
| NSS | GPIO26 |
| DIO0 | GPIO25 |
| DIO1 | GPIO27 |
| DIO2 | NOT CONNECTED |
| RESET | GPIO15 |

### **Programming LoRa Modules**

```cpp

                #include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
#define CONFIRMED_MSG_RETRY_COUNT 3
static const u1_t PROGMEM APPEUI[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

void os_getArtEui (u1_t* buf) {
  memcpy_P(buf, APPEUI, 8);
}
static const u1_t PROGMEM DEVEUI[8] = {0x4B, 0x11, 0x3F, 0xB1, 0x3C, 0xBE, 0xD6, 0x56};

void os_getDevEui (u1_t* buf) {
  memcpy_P(buf, DEVEUI, 8);
}

static const u1_t PROGMEM APPKEY[16] = {0xF9, 0x65, 0xE4, 0xED, 0xFF, 0x8A, 0x89, 0x27, 0x23, 0xA6, 0xB7, 0x42, 0x2F, 0x05, 0x8E, 0x9F};

void os_getDevKey (u1_t* buf) {
  memcpy_P(buf, APPKEY, 16);
}

static uint8_t mydata[] = "Hello, world!";
static osjob_t sendjob;
const unsigned TX_INTERVAL = 60;
const lmic_pinmap lmic_pins = {
  .nss = 26,
  .rxtx = LMIC_UNUSED_PIN,
  .rst = 15,
  .dio = {25, 27, -1},
};

void printHex2(unsigned v) {
  v &= 0xff;
  if (v < 16)
    Serial.print('0');
  Serial.print(v, HEX);
}
```