thnx rakesh
i tried as u said
Now i m checking my code in proteous with the help of virtual terminal i applied logic in which what i send to rx pin i should get in tx pin ,but when i send “#ON” to rx pin then i get “#NNN” or other garbage value
case:2- sometimes if i send ‘#on’ ..i got #on on tx pin
but if i send long string to rx pin then i only get 3 character accurate but after 3 character i get garbage value again