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Code Issues Releases Wiki Activity

Some simplifications

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This commit is contained in:
Jonathan Hogg
2016-10-24 19:19:52 +00:00
parent 3d12065469
commit 2174382464
2 changed files with 19 additions and 22 deletions
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21
scope.py
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@ -3,6 +3,7 @@
import argparse
import asyncio
import logging
import math
import os
import struct
@ -33,10 +34,6 @@ class Scope(vm.VirtualMachine):
await scope.setup()
return scope
@staticmethod
def _analog_map_func(ks, low, high):
return ks[0] + ks[1]*low + ks[2]*high
async def setup(self):
Log.info("Resetting scope")
await self.reset()
@ -173,17 +170,17 @@ class Scope(vm.VirtualMachine):
for dump_channel, channel in enumerate(sorted(channels)):
async with self.transaction():
await self.set_registers(SampleAddress=(address - nsamples) * nsamples_multiplier % buffer_width,
DumpMode=clock_mode.DumpMode, DumpChan=dump_channel,
DumpCount=nsamples, DumpRepeat=1, DumpSend=1, DumpSkip=0)
DumpMode=vm.DumpMode.Native if clock_mode.sample_width == 2 else vm.DumpMode.Raw,
DumpChan=dump_channel, DumpCount=nsamples, DumpRepeat=1, DumpSend=1, DumpSkip=0)
await self.issue_program_spock_registers()
await self.issue_analog_dump_binary()
data = await self._reader.readexactly(nsamples * clock_mode.sample_width)
if clock_mode.sample_width == 2:
data = struct.unpack('>{}h'.format(nsamples), data)
if raw:
trace = [(value / 65536 + 0.5) for value in struct.unpack('>{}h'.format(nsamples), data)]
trace = [(value / 65536 + 0.5) for value in data]
else:
trace = [(value / 65536 + 0.5) * (high - low) + low + self.analog_offsets[channel]
for value in struct.unpack('>{}h'.format(nsamples), data)]
trace = [(value / 65536 + 0.5) * (high - low) + low + self.analog_offsets[channel] for value in data]
else:
if raw:
trace = [value / 256 for value in data]
@ -197,7 +194,7 @@ class Scope(vm.VirtualMachine):
if vpp is None:
vpp = self.awg_maximum_voltage
possible_params = []
max_clock = int(round(1 / frequency / min_samples / self.awg_clock_period, 0))
max_clock = int(math.floor(1 / frequency / min_samples / self.awg_clock_period))
for clock in range(self.awg_minimum_clock, max_clock+1):
width = 1 / frequency / (clock * self.awg_clock_period)
if width <= self.awg_sample_buffer_size:
@ -221,8 +218,8 @@ class Scope(vm.VirtualMachine):
raise ValueError("Wavetable data must be {} samples".format(self.awg_wavetable_size))
await self.set_registers(Cmd=0, Mode=1, Address=0, Size=1)
await self.wavetable_write_bytes(wavetable)
await self.set_registers(Cmd=0, Mode=0, Level=vpp/self.awg_maximum_voltage,
Offset=2*offset/self.awg_maximum_voltage,
await self.set_registers(Cmd=0, Mode=0, Level=vpp / self.awg_maximum_voltage,
Offset=offset / self.awg_maximum_voltage,
Ratio=nwaves * self.awg_wavetable_size / size,
Index=0, Address=0, Size=size)
await self.issue_translate_wavetable()