Hi, I am hoping that some one might be able to steer me in the right direction, Here is a basic description of my project :
Using seeeduino mega as a " master reader" and the stalker as
"Slave Sender", using the arduino code examples I can send
a word successfully thru the llc connection i.e. Wire.send("hour");,
but any more send cmds and I get weird results, also my goal is to
Request date, year and time, and then after receiving this data send
it out the serial port on the Mega with sensor data, I have not had any luck retrieving the RTC data thru the llc connection, I have tried a number of different examples, can any one Help ?
Is this llc thing you are talking about anything like I2C?
but any more send cmds and I get weird results,
How about you post some pictures of your setup, or at least a diagram that shows what is connected to what, and how, and post some code.
Also, links to the equipment you have would be useful.
Thanks for the reply, sorry for the lack of information I will try to provide some more info now, the following (2) code examples are one of the methods I have tried, but I added the ds1307 library and the time library and attempted to write code to request the date, Year and time from the Sender which in my case is the seeeduino stalker with built in RTC, once again in my setup the seeeduino mega is the (Master reader), you can view both boards at (seeedstudio.com), I have also tried to retrieve the RTC data by calling the appropriate regesters and was not sucessfull. the main problem seems to be two issues, I am just having a hard time with using the wire library to access the RTC on the seeeduino stalker and also having trouble
sending characters and numbers over this interface, I can send numbers or charactors individually but not both in the same scope.
I think ther must be a proper way to do this but I am new to this,
sorry no pictures yet, Note: just looking for some Ideas.
Thanks much!
/ Wire Master Reader
// by Nicholas Zambetti <http://www.zambetti.com>
// Demonstrates use of the Wire library
// Reads data from an I2C/TWI slave device
// Refer to the "Wire Slave Sender" example for use with this
// Created 29 March 2006
// This example code is in the public domain.
#include <Wire.h>
void setup()
{
Wire.begin(); // join i2c bus (address optional for master)
Serial.begin(9600); // start serial for output
}
void loop()
{
Wire.requestFrom(2, 6); // request 6 bytes from slave device #2
while(Wire.available()) // slave may send less than requested
{
char c = Wire.receive(); // receive a byte as character
Serial.print(c); // print the character
}
delay(500);
}
// Wire Slave Sender
// by Nicholas Zambetti http://www.zambetti.com
// Demonstrates use of the Wire library
// Sends data as an I2C/TWI slave device
// Refer to the "Wire Master Reader" example for use with this
// Created 29 March 2006
// This example code is in the public domain.
#include <Wire.h>
void setup()
{
Wire.begin(2); // join i2c bus with address #2
Wire.onRequest(requestEvent); // register event
}
void loop()
{
delay(100);
}
// function that executes whenever data is requested by master
// this function is registered as an event, see setup()
void requestEvent()
{
Wire.send("hello "); // respond with message of 6 bytes
// as expected by master
}