We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
I m using LPC2148 controller. is it possible to use both serial(RS232) and USB communication between the same Master and slave?.
Yes. You can even make an ethernet link between them too.
As long as you map processor pins so you don't have any overlap, then the processor don't care what is connected on the other side of the link.
And the use of USB make no difference to what you can use the UART:s for. As long as you don't have different ground potentials between the equipment, so connecting RS232 results in strange voltages on the USB link.