cant getchar while connecting to serial port of MCU

Any body can help me that how can i give data to MCU from PC using the hyperterminal or any other terminal through serial port. my prog properly work on KEIL but when i burn the hex file it can work...
cant getchar while connecting to serial port of MCU

Any body can help me that how can i give data to MCU from PC using the hyperterminal or any other terminal through serial port. my prog properly work on KEIL but when i burn the hex file it can work...
Custom getchar

Is there a way to prevent getchar from echoing the input characters? I tried to write my own implementation of getchar , but the linker doesn't seem to let me do that. - Mike
Custom getchar

Is there a way to prevent getchar from echoing the input characters? I tried to write my own implementation of getchar , but the linker doesn't seem to let me do that. - Mike
getchar Linker error

I am new to programming microcontrollers, and I am just trying to write a simple program that echos back the characters to the screen. I first started off by trying to read from the serial port but then...