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import os
import subprocess
from nmigen.build import *
from nmigen.vendor.lattice_ecp5 import *
from .resources import *
__all__ = ["ECP55GEVNPlatform"]
class ECP55GEVNPlatform(LatticeECP5Platform):
device = "LFE5UM5G-85F"
package = "BG381"
speed = "8"
default_clk = "clk12"
default_rst = "rst"
resources = [
Resource("rst", 0, PinsN("G2", dir="i"), Attrs(IO_TYPE="LVCMOS33")),
Resource("clk12", 0, Pins("A10", dir="i"),
Clock(12e6), Attrs(IO_TYPE="LVCMOS33")),
*LEDResources(pins="A13 A12 B19 A18 B18 C17 A17 B17",
attrs=Attrs(IO_TYPE="LVCMOS33")),
*SwitchResources(pins="P4", invert=True,
attrs=Attrs(IO_TYPE="LVCMOS33")),
# TODO: add other resources
]
connectors = [
# TODO: add connectors
]
@property
def file_templates(self):
return {
**super().file_templates,
"{{name}}-openocd.cfg": r"""
interface ftdi
ftdi_device_desc "Lattice ECP5 Evaluation Board"
ftdi_vid_pid 0x0403 0x6010
ftdi_channel 0
ftdi_layout_init 0xfff8 0xfffb
reset_config none
adapter_khz 25000
jtag newtap ecp5 tap -irlen 8 -expected-id 0x81113043
"""
}
def toolchain_program(self, products, name):
openocd = os.environ.get("OPENOCD", "openocd")
with products.extract("{}-openocd.cfg".format(name), "{}.svf".format(name)) \
as (config_filename, vector_filename):
subprocess.check_call([openocd,
"-f", config_filename,
"-c", "transport select jtag; init; svf -quiet {}; exit".format(vector_filename)
])
if __name__ == "__main__":
from .test.blinky import *
ECP55GEVNPlatform().build(Blinky(), do_program=True)
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