User Guide

Programming #

The NORVI IIOT-AE03 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 Arduino IDE.

SoC: ESP32-WROOM32
Programming Port: USB UART

Digital Inputs #

Wiring Digital Inputs #

The digital inputs of the NORVI-IIOT-AE03 can be configured as both Sink and Source connections. The inverse of the Digital Input polarity 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 input is in the ON stage, the GPIO goes LOW.

Refer to the GPIO allocation table in the Datasheet the digital input GPIO

void setup() {
  Serial.begin(9600);                             
  pinMode(18, INPUT);
  pinMode(39, INPUT);
  pinMode(34, INPUT);
  pinMode(35, INPUT);
  pinMode(19, INPUT);
  pinMode(21, INPUT);
  pinMode(22, INPUT);
  pinMode(23, INPUT);
}
void loop()
{
  Serial.print("D1: ");                        //Digital Inputs Check
  Serial.print(digitalRead(18));
  Serial.print("\tD2: ");
  Serial.print(digitalRead(39));
  Serial.print("\tD3: ");
  Serial.print(digitalRead(34));
  Serial.print("\tD4: ");
  Serial.print(digitalRead(35));
  Serial.print("\tD5: ");
  Serial.print(digitalRead(19));
  Serial.print("\tD6: ");
  Serial.print(digitalRead(21));
  Serial.print("\tD7: ");
  Serial.print(digitalRead(22));
  Serial.print("\tD8: ");
  Serial.print(digitalRead(23));
  Serial.print("\n");
  
  delay(1000);
}

Analog Input #

Wiring Analog Inputs #

Reading Analog Input #

Reading the relevant I2C address of the ADC gives the value of the Analog Input.

Programming Analog Inputs  #

#define Analog1 33
int  buttonState = 0;

void setup() {
   Serial.begin(9600);                             
}
void loop()  {
   Serial.print(analogRead(Analog1));
   Serial.print("\n");
   delay(1000);
}

RS-485 communication #

RS-485 Wiring #

Driver	MAX485
UART RX	GPIO3
UART TX	GPIO1
Flow Control	GPIO4

Programming RS-485 #

The UART Connections of RS-485 in the NORVI IIOT AE01 series are shared with the UART connections of USB Serial.

#define RS485_FC 4

void setup() {
  Serial.begin(115200);
  Serial.println("Device Starting");

  pinMode(RS485_FC, OUTPUT);
}

void loop() {
  digitalWrite(RS485_FC, HIGH);   // Turns on Transmitter Mode
  Serial.println("RS-485 Sending"); 
  
  delay(500);
}

Built-in Buttons #

Read mode	ADC (Analog to Digital Conversion)
Analog IO	GPIO32

Programming Buttons #

#define buttonPin 32
int  buttonState = 0;

void setup() {
 
  Serial.begin(9600);                             
  pinMode(buttonPin,INPUT);
}
void loop() { 
  Serial.print("Button: ");
  buttonState = analogRead(buttonPin);
  delay(50);
  Serial.print(analogRead(buttonPin));
  Serial.print("\tAnalog: ");
  delay(1000);
}