52 lines
1.4 KiB
Python
52 lines
1.4 KiB
Python
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import os, subprocess
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from mibuild.generic_programmer import GenericProgrammer
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from mibuild import tools
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# XXX Lattice programmer need an .xcf file, will need clean up and support for more parameters
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_xcf_template = """
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<?xml version='1.0' encoding='utf-8' ?>
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<!DOCTYPE ispXCF SYSTEM "IspXCF.dtd" >
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<ispXCF version="3.4.1">
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<Comment></Comment>
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<Chain>
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<Comm>JTAG</Comm>
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<Device>
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<SelectedProg value="TRUE"/>
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<Pos>1</Pos>
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<Vendor>Lattice</Vendor>
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<Family>LatticeECP3</Family>
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<Name>LFE3-35EA</Name>
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<File>{bitstream_file}</File>
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<Operation>Fast Program</Operation>
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</Device>
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</Chain>
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<ProjectOptions>
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<Program>SEQUENTIAL</Program>
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<Process>ENTIRED CHAIN</Process>
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<OperationOverride>No Override</OperationOverride>
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<StartTAP>TLR</StartTAP>
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<EndTAP>TLR</EndTAP>
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<VerifyUsercode value="FALSE"/>
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</ProjectOptions>
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<CableOptions>
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<CableName>USB2</CableName>
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<PortAdd>FTUSB-0</PortAdd>
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<USBID>Dual RS232-HS A Location 0000 Serial A</USBID>
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<JTAGPinSetting>
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TRST ABSENT;
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ISPEN ABSENT;
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</JTAGPinSetting>
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</CableOptions>
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</ispXCF>
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"""
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class LatticeProgrammer(GenericProgrammer):
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needs_bitreverse = False
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def load_bitstream(self, bitstream_file):
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xcf_file = bitstream_file.replace(".bit", ".xcf")
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xcf_content = _xcf_template.format(bitstream_file=bitstream_file)
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tools.write_to_file(xcf_file, xcf_content)
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subprocess.call(["pgrcmd", "-infile", xcf_file])
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