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import os
import subprocess
from nmigen.build import *
from nmigen.vendor.lattice_ice40 import *
from .dev import *
__all__ = ["TinyFPGABXPlatform"]
class TinyFPGABXPlatform(LatticeICE40Platform):
device = "iCE40LP8K"
package = "CM81"
default_clk = "clk16"
resources = [
Resource("clk16", 0, Pins("B2", dir="i"),
Clock(16e6), Attrs(IO_STANDARD="SB_LVCMOS33")),
Resource("user_led", 0, Pins("B3", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
Resource("usb", 0,
Subsignal("d_p", Pins("B4", dir="io")),
Subsignal("d_n", Pins("A4", dir="io")),
Subsignal("pullup", Pins("A3", dir="o")),
Attrs(IO_STANDARD="SB_LVCMOS33")
),
*SPIFlashResources(0,
cs="F7", clk="G7", mosi="G6", miso="H7", wp="H4", hold="J8",
attrs=Attrs(IO_STANDARD="SB_LVCMOS33")),
]
connectors = [
Connector("gpio", 0,
# Left side of the board
# 1 2 3 4 5 6 7 8 9 10 11 12 13
" A2 A1 B1 C2 C1 D2 D1 E2 E1 G2 H1 J1 H2"
# Right side of the board
# 14 15 16 17 18 19 20 21 22 23 24
" H9 D9 D8 B8 A9 B8 A8 B7 A7 B6 A6"
# Bottom of the board
# 25 26 27 28 29 30 31
"G1 J3 J4 G9 J9 E8 J2"),
]
def toolchain_program(self, products, name):
tinyprog = os.environ.get("TINYPROG", "tinyprog")
with products.extract("{}.bin".format(name)) as bitstream_filename:
subprocess.check_call([tinyprog, "-p", bitstream_filename])
if __name__ == "__main__":
from ._blinky import build_and_program
build_and_program(TinyFPGABXPlatform)
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