Chris Fraser chrisfraser

Two way iframe communication

The main difference between the two pages is the method of sending messages. Recieving messages is the same in both.

Send messages to iframe using iframeEl.contentWindow.postMessage Recieve messages using window.addEventListener('message')

	#include<Wire.h>
	#include <Ultrasonic.h>

	const int MPU = 0x68; // I2C address of the MPU-6050

	const int LDR = A0;
	const int BUTTON = 4;
	const int RED = 15;
	const int GREEN = 12;
	const int BLUE = 13;

	// Consider hardware debouncing the buttons with a cap

	const long debounceDelay = 50; // the debounce time; increase if there is chatter on the buttons
	int buttons[] = {D1, D2, D3}; // Add your button pins here
	int outputs[] = {D7, D8}; // Add your button pins here

	// State variables
	int outputState[] = {LOW, LOW}; // current state of the output pins
	int buttonState[3]; // current reading from the buttons
	int previousButtonState[] = {HIGH, HIGH, HIGH}; // previous reading from the buttons