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1  Forum 2005-2010 (read only) / Troubleshooting / Bootloader problem on: October 10, 2008, 02:53:26 pm
I have bought a Arduino Diecimila with pre-programmed. But during last week, the bootloader is corrupted.

I have make a parallel program myself and I program the bootloader into my Arduino. I found that, when I try to use USB to download my sketch into Aruduino, it is not responding! I have to press RESET button, so that I only can programmed sketch in.

Can anyone please tell me what is going wrong?
2  Forum 2005-2010 (read only) / Interfacing / I2C EEPROM on: October 13, 2008, 09:11:44 am
Hi all,

I am trying to write and read to a I2C EEPROM AT24C512. In one sketch, if I write then immediately read, there show correct result. But if I use 1 sketch to write data, use another sketch to read data, there show incorrect result.

Is there any library for Arduino to interface with I2C EEPROM?
3  Forum 2005-2010 (read only) / Interfacing / Re: LCD4Bit for 20x4 displays! on: October 16, 2008, 01:07:24 pm
Hi,

I am using the code below to write user-defined code, but it is not working. I am using HD44780 4x20 LCD module.

Quote
void LCD4Bit::WriteCGRAM(int adress, char code[]) {
   commandWrite(0x40+(adress<<3));

   for (int i=0 ; i <= 7 ; i++)
        {
                print(code);
        }
   commandWrite(CMD_HOME);
}
4  Forum 2005-2010 (read only) / Interfacing / I2C Serial EEPROM on: October 12, 2008, 10:55:03 pm
Hi all,

I am trying to write and read to a I2C EEPROM AT24C512. In one sketch, if I write then immediately read, there show correct result. But if I use 1 sketch to write data, use another sketch to read data, there show incorrect result.

Is there any library for Arduino to interface with I2C EEPROM?
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