can we interface ARM controller LPC2138 with p98c51RD2XX.
i have an NXP rfid reader immobilizer kit which has lpc2138.where i have prepared a h/w relay circuit with p98c51RD2XX.the output of the kit is USB and the relay circuit hasserial input[uart]
can we interface the two controllers,if so how????
even i want the usb protocol for lpc2138
its urgent
Best way for the two to communicate is through UART as both have one. Where do you get the USB from because neither one has a USB!?
If you are talking about the LPC2148, which is basically a LPC2138 with USB, then check the NXP website for USB drivers or go here to sourceforge.net https://sourceforge.net/projects/lpcusb/
This is for a USB interface as implemented on the LPC214x. If there is actually a LPC2138 on the board you have, there must be an external USB chip and you have to find a stack for that one.
hth, Bob