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urukul: allow no io_update_device

This commit is contained in:
Robert Jördens 2018-04-25 17:32:36 +00:00
parent 8a1151b54f
commit edbc7763e0
1 changed files with 3 additions and 2 deletions
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3
artiq/coredevice/urukul.py
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@ -111,7 +111,7 @@ class CPLD:
"""
kernel_invariants = {"refclk", "bus", "core", "io_update"}
def __init__(self, dmgr, spi_device, io_update_device,
def __init__(self, dmgr, spi_device, io_update_device=None,
dds_reset_device=None,
sync_sel=0, clk_sel=0,
refclk=125e6, core_device="core"):
@ -120,6 +120,7 @@ class CPLD:
self.refclk = refclk
self.bus = dmgr.get(spi_device)
if io_update_device is not None:
self.io_update = dmgr.get(io_update_device)
if dds_reset_device is not None:
self.dds_reset = dmgr.get(dds_reset_device)