A.Rashad
Member level 4
I need to interface sim300 to ARM lpc2148, sIM300 gsm MODEM is working fine on hyperterminal , but as soon as I connect Tx RX of lpc2148 to Tx Rx of Modem , Its not working, means simultaneously I have connected RS232 cable to GSM modem, I am not able to see any response or command from ARM to Modem on Hyperterminal..