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Printer interface to Samsung ARM-7

prasadAradhya prasadAradhya
Note: This was originally posted on 25th June 2009 at http://forums.arm.com

Hi
I am interfacing the Dot matrix printer (EPSON 1000 series)  to an Samsung processor which as ARM - 7 architecture, through Parallel port.
I wanted to print text and graphics. Now i am trying to send text to print and the same i am displaying  on the display. On the display the data sent is displayed correctly,
but on the printer it is displaying 'PPPP' some junck even if i am not sending any data, If i press print button, then it self its printing junck characters.
I am not able to understand why its happening.
I am sending ASCII value of a character  to printer.
I am writing program in Embedded C.
If any one know please help me.
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