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Well, I switched from wireless Xbee communication to regular serial cable and unfortunately, the problem remains.
It seems that the controller keeps jumping into INT_RDA, even when nothing is being s ...

thanks for all the help and suggestions.

I know using printf and putc inside the ISR is a bad practice, the thing is that I see that the RX and TX LEDs on my robot are blinking constantly and only ...

Thanks for all the suggestions...

I'm afraid nothing helped - I focus my search on the hardware and xbee settings, maybe that's the source of the problem, though everything seems to be in order.
...

Thanks for all the comments so far.

I use ver. 4.088 and XBEE as a serial interface.

I looked at ex_zmd and found it useful since i need many of the functions in there.
I copied them and twiste ...

Thanks for the correction PCM, I modified the code as you suggested.
However, if you will notice the code I posted, I put inside the serial interrupt a putc to echo every getc, and that does not work ...

Hello all,

I am trying to write a simple program that receives a string from the RS232 and stores it for later use.
I have seen numerous examples in this forum, yet I did not succeed making any of ...