Hello, I need a help. I have AT89C51ED2 and FLIP programmer. But even if a have connected PC through RS232, nad through MAX 232 to processor I am not able to program it. If I select device and comunication a try to connect.It shows a message Timeout Error. Its on pins Rx and Tx. Is necessary to set any other pins to any voltage? Thank you very much. Cya TomZ
These day, I try to programm AT89C51ED2. I meet several problems.First, my PC can't communicate with my target board stablely. The Flip always shows "Timeout". SO i have to change the autoisp to manual isp. Now,the FLIP always shows "cann't open port". Please help me.
I do not have the Atmel types memorized so I do not know if this is an USB chip. But there have been several posts that the Atmel USB capable chips come in two flavors "UART programmable" and "USB programmable". For some reason which flavor is hidden well enough that I recall >5 posts on this. Erik
"Now,the FLIP always shows "cann't open port"." Most likely you are running another program which has the port open, possibly even a second copy of Flip.