Example - Modifying an IO Pin at Runtime - Interface Panel

In this example we use MegunoLink’s Interface Panel visualiser to create a user interface (UI) which allows you to send a serial message to update what IO pin you want to output a signal on. For example if you are flashing and LED on digital pin 1 you can reconfigure it after programming to be on digital pin 2. The Arduino processes the message using our Command Handler.

Downloads

This example is available as part of our Arduino Library but you can also download the MegunoLink interface and Arduino program here.

/* ************************************************************************
Configurable Output Pin
This program demonstrates how MegunoLink's Interface Panel and our command
handler Arduino library can be used to reconfigure which IO pin your device
is using at runtime.

The example folder also contains a MegunoLink project, with an Interface
Panel to control the IO Pin.
Visit:
* http://www.MegunoLink.com to download MegunoLink.
************************************************************************ */

#include "MegunoLink.h"
#include "CommandHandler.h"


int IOPort = 9; //initial IO pin number

long LastToggleTime = 0; // Time we last toggled the IO
int OnTime = 10; // Amount of time the IO remains on [milliseconds]
int OffTime = 100; // Amount of time the IO remains off [milliseconds]

CommandHandler<> SerialCommandHandler;

void Cmd_SetIOPin(CommandParameter &Parameters)
{
  Serial.print("Setting IO Port to:");
  IOPort = Parameters.NextParameterAsInteger();
  pinMode(IOPort, OUTPUT);
  Serial.println(IOPort);
}

void setup()
{
  Serial.begin(9600);
  Serial.println("Configurable IO Pin Demo");
  Serial.println("-----------------------------");

  pinMode(IOPort, OUTPUT);

  SerialCommandHandler.AddCommand(F("SetIOPin"), Cmd_SetIOPin);
}

void loop()
{
  SerialCommandHandler.Process();

  // Toggle the IO Pin
  uint32_t uNow = millis();
  if (uNow - LastToggleTime < OnTime) digitalWrite(IOPort, HIGH); else digitalWrite(IOPort, LOW); if (uNow - LastToggleTime > OnTime + OffTime)
    LastToggleTime = uNow;
}

/* ************************************************************************

Configurable Output Pin

This program demonstrates how MegunoLink's Interface Panel and our command

handler Arduino library can be used to reconfigure which IO pin your device

is using at runtime.

The example folder also contains a MegunoLink project, with an Interface

Panel to control the IO Pin.

Visit:

* http://www.MegunoLink.com to download MegunoLink.

************************************************************************ */

#include "MegunoLink.h"

#include "CommandHandler.h"

int IOPort = 9; //initial IO pin number

long LastToggleTime = 0; // Time we last toggled the IO

int OnTime = 10; // Amount of time the IO remains on [milliseconds]

int OffTime = 100; // Amount of time the IO remains off [milliseconds]

CommandHandler<> SerialCommandHandler;

void Cmd_SetIOPin(CommandParameter &Parameters)

{

Serial.print("Setting IO Port to:");

IOPort = Parameters.NextParameterAsInteger();

pinMode(IOPort, OUTPUT);

Serial.println(IOPort);

}

void setup()

{

Serial.begin(9600);

Serial.println("Configurable IO Pin Demo");

Serial.println("-----------------------------");

pinMode(IOPort, OUTPUT);

SerialCommandHandler.AddCommand(F("SetIOPin"), Cmd_SetIOPin);

}

void loop()

{

SerialCommandHandler.Process();

// Toggle the IO Pin

uint32_t uNow = millis();

if (uNow - LastToggleTime < OnTime) digitalWrite(IOPort, HIGH); else digitalWrite(IOPort, LOW); if (uNow - LastToggleTime > OnTime + OffTime)

LastToggleTime = uNow;

}