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  #

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);
}

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 #

#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);
}