EC-M11-BC-C1-LTE_V3 – USER GUIDE

Programming  #

This guide applies to version 2 of the EC-M11-BC-C1-LTE module. The NORVI EC-M11-BC-C1-LTE 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

Wiring Digital Inputs, Analog inputs, and RS485 #

8-pin and 3-pin connectors and wire harness #

Pin Description #

Digital Inputs #

Wiring Digital Inputs  #

The digital inputs of NORVI EC-M11-BC-C1-LTE can be configured as both a sink and a source connection. The inverse of the digital input polar should be supplied to the common terminal.

Programming Digital Inputs  #

Reading the relevant GPIO of the ESP32 gives the value of the digital input. When the inputs are in the OFF state, the GPIO goes HIGH, and when the inputs are in the ON state, the GPIO goes LOW. Refer to the GPIO allocation table in the datasheet for the digital input GPIO.

#define INPUT1 35
void setup() { 
   Serial.begin(115200); 
   Serial.println("Device Starting"); 
   pinMode(INPUT1, INPUT); 
} 
void loop() { 
   Serial.print(digitalRead(INPUT1));
   Serial.println(""); 
   delay(500); 
}

0-10 V Analog Input #

Reading Analog Input #

Reading the relevant I2C address of the ADC gives the value of the analog input.

Programming Analog Inputs  #

#include <Adafruit_ADS1X15.h>
Adafruit_ADS1115 ads1;
String adcString[8];

void setup() {
  Serial.begin(115200);
  ads1.begin();
  ads1.setGain(GAIN_ONE);
  Serial.println("Initialized analog inputs");
}
void loop() {
  Serial.print("Battery Voltage: ");
  Serial.println(readBattery());
  delay(800);
  printanalog();
  delay(800);
}

void loop() {
  int16_t adc0, adc1, adc2, adc3;
  adc0 = ads1.readADC_SingleEnded(0);
  adc1 = ads1.readADC_SingleEnded(1);

  Serial.println("-----------------------------------------------------------");
  Serial.print("AIN1: "); 
  Serial.print(adc0); 
  Serial.println("  ");
  Serial.print("AIN2: "); 
  Serial.print(adc1); 
  Serial.println("  ");
}

12V Power Output #

Programming power output #

#include <Adafruit_ADS1015.h>
Adafruit_ADS1115 ads1(0x49);

void setup() {
  Serial.begin(115200);
  pinMode(13, OUTPUT); // 12V boosted output enable
  ads1.begin();
  ads1.setGain(GAIN_ONE);
  Serial.println("Initialized 12V battery power control");
}

void loop() {
  digitalWrite(13, HIGH); // Enable 12V battery power
  delay(800);
}

void disable12VBatteryPower() {
  digitalWrite(13, LOW); // Disable 12V battery power
}

LTE1 Communication #

LTE2 Communication #

Programming LTE Communication #

#define MODEM_RESET 32
#define MODEM_FLIGHT 22
#define MODEM_RX 26
#define MODEM_TX 25
long timer1;

void setup() {           // initialize both serial ports:
  Serial.begin(115200);
  pinMode(MODEM_FLIGHT , OUTPUT);       // FLIGHT MODE ENABLE
  pinMode(MODEM_RESET , OUTPUT);       // MODEM RESET PIN
  digitalWrite(MODEM_FLIGHT, HIGH);   // FLIGHT MODE 
  MODEM_RESET_CYC();
  delay(2000);
  Serial2.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
  Serial.println("SIM AT ATART >>>>>>>>>>>>>>");
  delay(2000);
  Serial2.println("AT");
  delay(2000);
  Serial2.println("AT+CPIN?");
  delay(2000);
  Serial2.println("AT+CNMP?");
}

void loop() {
  delay(3000);
  timer1 = millis();
  Serial2.println("AT");
  while(millis()<timer1+10000){
    while (Serial2.available()) {
    int inByte = Serial2.read();
    Serial.write(inByte);
    }
  }
  timer1 = millis();
  Serial2.println("AT+CPIN?");
  while(millis()<timer1+10000){
    while (Serial2.available()) {
    int inByte = Serial2.read();
    Serial.write(inByte);
    }
  }
  Serial.println("AT SCAN DONE");         // read from port 0, send to port 1:
  while (Serial.available()) {
    int inByte = Serial.read();
    Serial2.write(inByte);
  }
  while (Serial2.available()) {
    int inByte = Serial2.read();
    Serial.write(inByte);
  }
}
void MODEM_RESET_CYC() {
  digitalWrite(MODEM_RESET,HIGH );
  delay(1000);
  digitalWrite(MODEM_RESET,LOW );
  delay(1000);
  digitalWrite(MODEM_RESET, HIGH);
}

Solar Input #

Battery Input #

Programming Solar and Battery #

#include <Adafruit_SSD1306.h>
#include <Adafruit_ADS1X15.h>
Adafruit_ADS1115 ads1;
int analog_value = 0;

void setup() {
  Serial.begin(115200);// put your setup code here, to run once:
  Wire.begin(16,17);
  if (!ads1.begin(0x49)) {
    Serial.println("Failed to initialize ADS 1 .");
    while (1);
  }
}

void loop() {
  int16_t adc0, adc1, adc2, adc3;
  adc0 = ads1.readADC_SingleEnded(0);
  adc1 = ads1.readADC_SingleEnded(1);
  adc2 = ads1.readADC_SingleEnded(2);
  adc3 = ads1.readADC_SingleEnded(3);
  Serial.println("-----------------------------------------------------------");
  Serial.print("AIN1: "); 
  Serial.print(adc0); 
  Serial.println("  ");
  Serial.print("AIN2: "); 
  Serial.print(adc1); 
  Serial.println("  ");
  Serial.print("SOLAR: "); 
  Serial.print(adc2); 
  Serial.println("  ");
  Serial.print("AIN4: "); 
  Serial.print(adc3); 
  Serial.println("  ");   
}