if it is a numeric keypad | Microcontroller › 8051 › at commands › if it is a numeric keypad March 6, 2012 at 6:22 am #7260 phanindra nathParticipant if it is a numeric keypad then you should write your program in such a way that, whenever ‘1’ key is pressed “AT” command is sent , whenever ‘2’ key is pressed “AT+CMGF=1” is sent ….like this you should write your program.
