NORVI-EX-R8 – USER GUIDE

Programming #

NORVI-EX-R8 uses MCP23017 over I2C communication. The I2C addresses of the devices can be configured with the DIP switches at the bottom of the controller.

Expansion Port #

The expansion port of the NORVI IIOT Controllers can be utilized for external sensor connections where raw GPIO connections are required, or they can be used to plug NORVI Expansion Modules. Browse the NORVI Expansion Product Range. How to Connect NORVI Expansion Modules.

I2C Address Setting #

The I2C address of the expansion module can be configured by switching DIP switches at the bottom of the expansion module. The device can be configured at 8 I2C addresses using the first 3 DIP switches.

Relay Outputs #

Wiring Relay Outputs #

Programming Relay Outputs #

Writing HIGH to the relevant GPIO of MCP23017 turns on the relay output. Refer to the GPIO Allocation Table for Relay Output GPIO. Refer to the I2C Address setting to set the I2C address of the Expansion.

#include <Adafruit_MCP23X17.h>

#define OUTPUT1 7
#define OUTPUT2 6
#define OUTPUT3 5
#define OUTPUT4 4
#define OUTPUT5 8
#define OUTPUT6 9
#define OUTPUT7 10
#define OUTPUT8 11

// uncomment appropriate line
Adafruit_MCP23X08 mcp;

void setup() {
  Serial.begin(115200);
  //while (!Serial);
  Serial.println("NORVO Expansions Test");

  // uncomment appropriate mcp.begin
  Wire.begin (16, 17);   
  if (!mcp.begin_I2C(0x27)) {
    Serial.println("Error.");
    while (1);
  }

  // configure pin for output
  mcp.pinMode(OUTPUT1, OUTPUT);
  mcp.pinMode(OUTPUT2, OUTPUT);
  mcp.pinMode(OUTPUT3, OUTPUT);
  mcp.pinMode(OUTPUT4, OUTPUT);
  mcp.pinMode(OUTPUT5, OUTPUT);
  mcp.pinMode(OUTPUT6, OUTPUT);
  mcp.pinMode(OUTPUT7, OUTPUT);
  mcp.pinMode(OUTPUT8, OUTPUT);

  Serial.println("Looping...");
}

void loop() {
  mcp.digitalWrite(OUTPUT1, HIGH);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, HIGH);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, HIGH);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, HIGH);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, HIGH);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, HIGH);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, HIGH);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, HIGH);
  delay(500);
  mcp.digitalWrite(OUTPUT1, LOW);
  mcp.digitalWrite(OUTPUT2, LOW);
  mcp.digitalWrite(OUTPUT3, LOW);
  mcp.digitalWrite(OUTPUT4, LOW);
  mcp.digitalWrite(OUTPUT5, LOW);
  mcp.digitalWrite(OUTPUT6, LOW);
  mcp.digitalWrite(OUTPUT7, LOW);
  mcp.digitalWrite(OUTPUT8, LOW);
  delay(500);

  Serial.println("Looping...");
}