mirror of https://github.com/m-labs/artiq.git
61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
# TODO: move to firmware
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from artiq.coredevice.ad9154_reg import *
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from artiq.experiment import *
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class Test(EnvExperiment):
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def build(self):
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self.setattr_device("core")
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self.setattr_device("ad9154")
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@kernel
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def run(self):
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for i in range(1, 4): # prbs7, prbs15, prbs31
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self.prbs(i, 10)
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@kernel
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def busywait_us(self, t):
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t = self.core.get_rtio_counter_mu() + self.core.seconds_to_mu(t*us)
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while self.core.get_rtio_counter_mu() < t:
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pass
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def p(self, f, *a):
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print(f.format(*a))
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@kernel
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def prbs(self, p, t):
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self.p("---\nprbs sequence {}, threshold {}:", p, t)
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self.ad9154.jesd_prbs(p)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL,
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AD9154_PHY_PRBS_PAT_SEL_SET(p))
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_EN, 0xff)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL,
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AD9154_PHY_PRBS_PAT_SEL_SET(p) | AD9154_PHY_TEST_RESET_SET(1))
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL,
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AD9154_PHY_PRBS_PAT_SEL_SET(p))
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_THRESHOLD_LOBITS, t)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_THRESHOLD_MIDBITS, t >> 8)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_THRESHOLD_MIDBITS, t >> 16)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL, AD9154_PHY_PRBS_PAT_SEL_SET(p))
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL,
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AD9154_PHY_PRBS_PAT_SEL_SET(p) | AD9154_PHY_TEST_START_SET(1))
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self.busywait_us(1000000)
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL, AD9154_PHY_PRBS_PAT_SEL_SET(p))
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self.p("prbs status: {:#04x}", self.ad9154.dac_read(AD9154_PHY_PRBS_TEST_STATUS))
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for i in range(8):
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self.ad9154.dac_write(AD9154_PHY_PRBS_TEST_CTRL, AD9154_PHY_SRC_ERR_CNT_SET(i))
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self.p("prbs errors[{}]: {:#08x}", i,
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self.ad9154.dac_read(AD9154_PHY_PRBS_TEST_ERRCNT_LOBITS) |
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(self.ad9154.dac_read(AD9154_PHY_PRBS_TEST_ERRCNT_MIDBITS) << 8) |
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(self.ad9154.dac_read(AD9154_PHY_PRBS_TEST_ERRCNT_HIBITS) << 16))
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self.ad9154.jesd_prbs(0)
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