M-Labs
/
artiq
mirror of https://github.com/m-labs/artiq.git
2
0
Fork 2
Code Issues Projects Releases Wiki Activity

ttl: use optimized rtio_output API

This commit is contained in:
Sebastien Bourdeauducq 2018-11-07 23:41:43 +08:00
parent 3d0c3cc1cf
commit fae95e73ad
1 changed files with 19 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
artiq/coredevice/ttl.py
View File

@ -29,11 +29,12 @@ class TTLOut:
:param channel: channel number
"""
kernel_invariants = {"core", "channel"}
kernel_invariants = {"core", "channel", "target_o"}
def __init__(self, dmgr, channel, core_device="core"):
self.core = dmgr.get(core_device)
self.channel = channel
self.target_o = channel << 8
@kernel
def output(self):
@ -41,7 +42,7 @@ class TTLOut:
@kernel
def set_o(self, o):
rtio_output(now_mu(), self.channel, 0, 1 if o else 0)
rtio_output(now_mu(), self.target_o, 1 if o else 0)
@kernel
def on(self):
@ -106,15 +107,20 @@ class TTLInOut:
:param channel: channel number
"""
kernel_invariants = {"core", "channel"}
kernel_invariants = {"core", "channel",
"target_o", "target_oe", "target_sens", "target_sample"}
def __init__(self, dmgr, channel, core_device="core"):
self.core = dmgr.get(core_device)
self.channel = channel
self.target_o = (channel << 8) + 0
self.target_oe = (channel << 8) + 1
self.target_sens = (channel << 8) + 2
self.target_sample = (channel << 8) + 3
@kernel
def set_oe(self, oe):
rtio_output(now_mu(), self.channel, 1, 1 if oe else 0)
rtio_output(now_mu(), self.target_oe, 1 if oe else 0)
@kernel
def output(self):
@ -136,7 +142,7 @@ class TTLInOut:
@kernel
def set_o(self, o):
rtio_output(now_mu(), self.channel, 0, 1 if o else 0)
rtio_output(now_mu(), self.target_o, 1 if o else 0)
@kernel
def on(self):
@ -181,7 +187,7 @@ class TTLInOut:
# Input API: gating
@kernel
def _set_sensitivity(self, value):
rtio_output(now_mu(), self.channel, 2, value)
rtio_output(now_mu(), self.target_sens, value)
@kernel
def gate_rising_mu(self, duration):
@ -355,7 +361,7 @@ class TTLInOut:
position of the time cursor.
The time cursor is not modified by this function."""
rtio_output(now_mu(), self.channel, 3, 0)
rtio_output(now_mu(), self.target_sample, 0)
@kernel
def sample_get(self):
@ -392,13 +398,13 @@ class TTLInOut:
The time cursor is not modified by this function.
"""
rtio_output(now_mu(), self.channel, 3, 2) # gate falling
rtio_output(now_mu(), self.target_sample, 2) # gate falling
return rtio_input_data(self.channel) == 1
@kernel
def watch_stay_off(self):
"""Like :meth:`watch_stay_on`, but for low levels."""
rtio_output(now_mu(), self.channel, 3, 1) # gate rising
rtio_output(now_mu(), self.target_sample, 1) # gate rising
return rtio_input_data(self.channel) == 0
@kernel
@ -411,7 +417,7 @@ class TTLInOut:
The time cursor is not modified by this function. This function
always makes the slack negative.
"""
rtio_output(now_mu(), self.channel, 2, 0)
rtio_output(now_mu(), self.target_sens, 0)
success = True
try:
while rtio_input_timestamp(now_mu(), self.channel) != -1:
@ -432,11 +438,12 @@ class TTLClockGen:
:param channel: channel number
:param acc_width: accumulator width in bits
"""
kernel_invariants = {"core", "channel", "acc_width"}
kernel_invariants = {"core", "channel", "target", "acc_width"}
def __init__(self, dmgr, channel, acc_width=24, core_device="core"):
self.core = dmgr.get(core_device)
self.channel = channel
self.target = channel << 8
self.acc_width = numpy.int64(acc_width)
@ -472,7 +479,7 @@ class TTLClockGen:
Due to the way the clock generator operates, frequency tuning words
that are not powers of two cause jitter of one RTIO clock cycle at the
output."""
rtio_output(now_mu(), self.channel, 0, frequency)
rtio_output(now_mu(), self.target, frequency)
@kernel
def set(self, frequency):