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Arduino Uno (SMD) Ethernet Shield + I2C LCD ERROR

macs 2013-08-22 10:48:01 6258 Views2 Replies
HI,
I'm trying to use a LCD I2C (DRF0063) with Arduino Uno and Ethernet Shield.
As soon as I execute lcd.init() Arduino stucks and don't proceed with code execution.
If I remove the ethernet shield from arduino, all goes fine.
Any tips?

Here is my code:
Code: Select all
#include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,16,2); void setup() { Serial.begin(9600); Serial.println("Serial INIT"); lcd.init(); Serial.println("LCD INIT"); } void loop() { Serial.println("Hi"); delay(1000); }

2013-08-23 03:34:58 Hi Greg!
Thanks for your reply.
In this unit, there is not jumper cats. The adress is fixed, somehow, and the adress is printed on PCB of LCD controller.
Is not a problem with the upload I think, cause if don't execute lcd.init(), the arduino don't gets stuck.
I'll try with another ethernet shield I have, maybe is hardware related. macs

2013-08-22 21:36:17 Hi?macs
Whether it happened during your uploading the code to the Arduino?
You know when we upload the code ,we need "TX"&"RX".If these two serial port are occupied by the Ethernet Shield, it can't work.
by the way ,I saw the address (0x27).Don't forget to take off the Jumper Cap

Grey.CC

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	#include <Wire.h>
	#include <LiquidCrystal_I2C.h>

	LiquidCrystal_I2C lcd(0x27,16,2);

	void setup()
	{
	Serial.begin(9600);
	Serial.println("Serial INIT");
	lcd.init();
	Serial.println("LCD INIT");
	}

	void loop()
	{
	Serial.println("Hi");
	delay(1000);
	}