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Topic: Upload issue with Rx/Tx connected (Read 956 times) previous topic - next topic


I have a Duemilanove atmega328. Has been working fine for developing code.
I have now connected a serial LCD to the Tx pin and that works fine. The next step I added a EDE1144 keypad encoder and membrane keypad.  What happens now is the arduino flags an error whae I try to upload.

"avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51"

If I disconnect the Rx line to the Keypad Encoder the Arduino behalves as expected (I can once again upload to it).  Is there a way I can delay the Rx from reading that input until the uploading is complete?



Why don't you just use the NewSoftSerial  library for the lcd/keypad functions as you can then assign to any other two pins?



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