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Forum: FPGA, VHDL & Verilog XBEE Explorer RS232 to Basys3


Author: Xabier G. (doctormckay)
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Ok, I would like to know how I must connect the RS232 with the XBEEPro 
on top of it to the Diligent Basys3 board as all the documentation I am 
finding talks about connecting the RS232 to the PC, not to a FPGA board.

My plan is to send messages wirelessly between the two boards using the 
XBEEs as the receiver/transmitters.  Is this possible¿?

Author: Lothar M. (lkmiller) (Moderator)
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Xabier G. wrote:
> connecting the RS232 to the PC, not to a FPGA board.
Convert the RS232 signal to a 3V CMOS level using something like a 
MAX3223 (as I see this is already done by the interface boards). Then 
implement a RS232 interface on your FPGA using VHDL or Verilog or 
something similar. Then send the necessary commands to configure the 
transmission and transmit data.
Exactly your application is described in the datasheet. Simply replace 
those "Microcontroller" in figure 2-01 by "FPGA".

> My plan is to send messages wirelessly between the two boards using the
> XBEEs as the receiver/transmitters.  Is this possible¿?
First connect two PCs with XBEEs.
When this works replace one of the PC by a FPGA board.
When this works replace the second PC by the second FPGA board.

So the summary: slice that one HUGE BIG PROBLEM in small slices and 
solve one of them after the other.

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