NET "i_clk" LOC = "B8" | IOSTANDARD = LVCMOS33 ;   
NET "i_clk" CLOCK_DEDICATED_ROUTE = FALSE;

# Pin assignment for Uart tx
NET "q" LOC = "L15"  | IOSTANDARD = LVTTL | SLEW = FAST | DRIVE = 8 ; 

# Pin assignment for LED
# NET "q" LOC = "J14"  | IOSTANDARD = LVTTL | SLEW = FAST | DRIVE = 8 ;