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test: convert test_pulse_rate_dds to use mu. 

Before this commit, this test was actually measuring soft-FP
performance.
This commit is contained in:
whitequark 2017-01-25 11:26:30 +00:00
parent 57f54dbd12
commit 0b67396630
1 changed files with 4 additions and 3 deletions
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7
artiq/test/coredevice/test_rtio.py
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@ -119,13 +119,14 @@ class PulseRateDDS(EnvExperiment):
def run(self): def run(self):
self.core.reset() self.core.reset()
dt = self.core.seconds_to_mu(5*us) dt = self.core.seconds_to_mu(5*us)
freq = self.core_dds.frequency_to_ftw(100*MHz)
while True: while True:
delay(10*ms) delay(10*ms)
for i in range(1250): for i in range(1250):
try: try:
with self.core_dds.batch: with self.core_dds.batch:
self.dds0.set(100*MHz) self.dds0.set_mu(freq)
self.dds1.set(100*MHz) self.dds1.set_mu(freq)
delay_mu(dt) delay_mu(dt)
except RTIOUnderflow: except RTIOUnderflow:
dt += 100 dt += 100
@ -360,7 +361,7 @@ class CoredeviceTest(ExperimentCase):
rate = self.dataset_mgr.get("pulse_rate") rate = self.dataset_mgr.get("pulse_rate")
print(rate) print(rate)
self.assertGreater(rate, 1*us) self.assertGreater(rate, 1*us)
self.assertLess(rate, 6.2*us) self.assertLess(rate, 6.5*us)
def test_loopback_count(self): def test_loopback_count(self):
npulses = 2 npulses = 2