hello everyone , i am facing a strange situation. i simply sent AT<CR> to gsm modem but in response receive only CR and character A instead of proper response i.e. <cr><lf>ok<cr><lf> already tied DTE and RTS pins to +5v for handshaking.
with hyperterminal everything was ok but this is not the case with uc.I also read previous threads but nothing worked.
Any idea which can help?????
thanks n regards rishi