my problem is i want to send data to the serial port without using printf, this is because i want to read data of the serial port to use in another application. but using printf takes too long to run as i want my program to run at a speed less than 1mS. any help as soon as possible would be very helpfull??????????
Hi, You may enable transmission interrupt(ti=1) and send one byte to SBUF directly in your interrupt service routine. I think it is fast enough.