# This is a partial constraints file for ButterStick r1.0,
# produced based on
# https://github.com/butterstick-fpga/butterstick-bootloader/blob/main/gateware/rtl/platform/butterstick_r1d0.py
# All mistakes mine, Tommy Thorn, 2021

LOCATE COMP "clk" SITE "B12";
IOBUF PORT "clk" IO_TYPE=LVCMOS18;
FREQUENCY PORT "clk" 30.0 MHz;

LOCATE COMP "rst_n" SITE "R3";
IOBUF PORT "rst_n" IO_TYPE=LVCMOS33 OPENDRAIN=ON;

LOCATE COMP "user_btn[0]" SITE "U16";
IOBUF PORT "user_btn[0]" IO_TYPE=SSTL135_I;

LOCATE COMP "user_btn[1]" SITE "T17";
IOBUF PORT "user_btn[1]" IO_TYPE=SSTL135_I;

LOCATE COMP "LED0" SITE "C13";
IOBUF PORT "LED0" IO_TYPE=LVCMOS33;
LOCATE COMP "LED1" SITE "D12";
IOBUF PORT "LED1" IO_TYPE=LVCMOS33;
LOCATE COMP "LED2" SITE "U2";
IOBUF PORT "LED2" IO_TYPE=LVCMOS33;
LOCATE COMP "LED3" SITE "T3";
IOBUF PORT "LED3" IO_TYPE=LVCMOS33;
LOCATE COMP "LED4" SITE "D13";
IOBUF PORT "LED4" IO_TYPE=LVCMOS33;
LOCATE COMP "LED5" SITE "E13";
IOBUF PORT "LED5" IO_TYPE=LVCMOS33;
LOCATE COMP "LED6" SITE "C16";
IOBUF PORT "LED6" IO_TYPE=LVCMOS33;
LOCATE COMP "colour[0]" SITE "T1";
IOBUF PORT "colour[0]" IO_TYPE=LVCMOS33;
LOCATE COMP "colour[1]" SITE "R1";
IOBUF PORT "colour[1]" IO_TYPE=LVCMOS33;
LOCATE COMP "colour[2]" SITE "U1";
IOBUF PORT "colour[2]" IO_TYPE=LVCMOS33;