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coredevice/adf5356: fix initial device detection 

Signed-off-by: Etienne Wodey <wodey@iqo.uni-hannover.de>
This commit is contained in:
Etienne Wodey 2021-01-28 17:33:55 +01:00
parent 3657055bc0
commit a8bc98a77b
1 changed files with 20 additions and 9 deletions
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29
artiq/coredevice/adf5356.py
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@ -82,18 +82,25 @@ class ADF5356:
"""
if not blind:
# MUXOUT = VDD
self.write(ADF5356_REG4_MUXOUT(1) | 4)
delay(5000 * us)
self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 1)
self.sync()
delay(1000 * us)
if not self.read_muxout():
raise ValueError("MUXOUT not high")
delay(1000 * us)
delay(800 * us)
# MUXOUT = DGND
self.write(ADF5356_REG4_MUXOUT(2) | 4)
delay(5000 * us)
self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 2)
self.sync()
delay(1000 * us)
if self.read_muxout():
raise ValueError("MUXOUT not low")
delay(1000 * us)
delay(800 * us)
# MUXOUT = digital lock-detect
self.regs[4] = ADF5356_REG4_MUXOUT_UPDATE(self.regs[4], 6)
else:
self.sync()
@kernel
def set_att_mu(self, att):
@ -430,9 +437,9 @@ class ADF5356:
self.regs[6] |= ADF5356_REG6_NEGATIVE_BLEED(1)
# charge pump bleed current
# self.regs[6] |= ADF5356_REG6_CP_BLEED_CURRENT(
# int32(floor(24 * self.f_pfd / (61.44 * MHz)))
# )
self.regs[6] |= ADF5356_REG6_CP_BLEED_CURRENT(
int32(floor(24 * self.f_pfd() / (61.44 * MHz)))
)
# direct feedback from VCO to N counter
self.regs[6] |= ADF5356_REG6_FB_SELECT(1)
@ -474,6 +481,10 @@ class ADF5356:
| ADF5356_REG9_TIMEOUT(0x67)
)
self.regs[9] |= ADF5356_REG9_VCO_BAND_DIVISION(
int32(ceil(self.f_pfd() / 160e3))
)
# REG10
# =====