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ChimeraControls.py
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Wed, May 15, 01:50

ChimeraControls.py
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#import ChimeraSettings
import os
import sys
import numpy as np
import scipy
from scipy import signal as si
import math
import time
import datetime
def upsample(s, n, phase=0):
"""Increase sampling rate by integer factor n with included offset phase.
"""
return np.roll(np.kron(s, np.r_[1, np.zeros(n-1)]), phase)
def InitializeChimera(ChimeraSettings, xem):
ndevices = xem.GetDeviceCount()
if ndevices == 0:
print('No Device Attached!!')
return -1
serials = xem.GetDeviceListSerial(0)
models = xem.GetDeviceListModel(0)
print('OK Devices detected (Model: {}) . Serial number of device 1 is {Serial} '.format(ndevices, models,
Serial=serials))
bitfilename = 'bitfile_fpga_spartan6_usb3.bit'
openanswer = xem.OpenBySerial(serials)
print('Device opened with code {}'.format(openanswer))
confanswer = xem.ConfigureFPGA(bitfilename)
print('Device configured with code {}'.format(confanswer))
ans1 = xem.SetWireInValue(ChimeraSettings.EP_WIREIN_TEST1, ChimeraSettings.EPBIT_GLOBALRESET, ChimeraSettings.EPBIT_GLOBALRESET)
xem.UpdateWireIns()
time.sleep(0.1)
ans2 = xem.SetWireInValue(ChimeraSettings.EP_WIREIN_TEST1, ChimeraSettings.EPBIT_ENABLEADCFIFO, ChimeraSettings.EPBIT_ENABLEADCFIFO)
xem.UpdateWireIns()
time.sleep(0.1)
ans3 = xem.SetWireInValue(ChimeraSettings.EP_WIREIN_TEST1, 0, ChimeraSettings.EPBIT_GLOBALRESET)
xem.UpdateWireIns()
time.sleep(0.1)
ans4 = xem.SetWireInValue(ChimeraSettings.EP_WIREIN_TEST1, ChimeraSettings.EPBIT_HEADSTAGE_PWR_LED, ChimeraSettings.EPBIT_HEADSTAGE_PWR_LED)
xem.UpdateWireIns()
time.sleep(0.1)
CHIMERA_updateDACvalues1(ChimeraSettings,xem,0)
CHIMERA_updateDPOTvalues1(ChimeraSettings, xem)
# Set Input
SetADCInput(ChimeraSettings, xem, 'Filtered')
outtext = CHIMERA_bandwidthtimer(ChimeraSettings, xem)
def CHIMERA_process_triggers(ChimeraSettings, xem):
xem.UpdateTriggerOuts()
ba = bytearray(ChimeraSettings.ADC_pkt_len)
out = xem.ReadFromBlockPipeOut(ChimeraSettings.EP_PIPEOUT_ADC, ChimeraSettings.ADC_xfer_blocksize, ba)
#print(out)
#int=np.uint8(ba)
#bytesread = len(readbytes)
#typecasted = int.view(np.uint32)
blockvalues = np.uint16((np.uint8(ba)).view(np.uint32))
return blockvalues
#globals.read_monitor += 2*len(globals.blockvalues) ??
def ConvertBlockvalues(ChimeraSettings,readvalues):
#readvalues=g.blockvalues
mygain = ChimeraSettings.SETUP_TIAgain * ChimeraSettings.SETUP_preADCgain
bitmask = (2**16 - 1) - (2**(16-ChimeraSettings.ADCBITS) - 1)
readvalues = -ChimeraSettings.ADCVREF + (2*ChimeraSettings.ADCVREF) * (readvalues & bitmask) / 2**16
readvalues = 10**9*(readvalues/mygain + ChimeraSettings.SETUP_pAoffset)
return readvalues
def lowpass(ChimeraSettings, readvalues, cutoff = None):
#currentRMSRaw = np.std(readvalues)
if cutoff is None:
displaybuffer = si.resample(readvalues, int(1/ChimeraSettings.displaysubsample*len(readvalues)))
else:
downsampled = si.resample(readvalues, int(1/ChimeraSettings.displaysubsample*len(readvalues)))
effsamplerate=(ChimeraSettings.ADCSAMPLERATE/ChimeraSettings.displaysubsample)
Wn = round(2*cutoff/effsamplerate, 4)
b, a = si.bessel(4, Wn, btype='low', analog=False)
displaybuffer = si.filtfilt(b, a, downsampled)
displaybuffer = displaybuffer[100:len(displaybuffer)-100]
return displaybuffer
def CHIMERA_updateDACvalues1(ChimeraSettings,xem, newbiasvalue):
Cfastvalue = ChimeraSettings.CFAST_CAP0
#Cfastvalue = globals.CFAST_CAP0+globals.CFAST_CAP1 #for extended range
newCfastDACvoltage = - newbiasvalue * ChimeraSettings.myCfast / (ChimeraSettings.CFAST_gain*Cfastvalue)
biasDACcode = np.uint16((-newbiasvalue - ChimeraSettings.voltageOffset + 0.5 * ChimeraSettings.DACFULLSCALE)/ChimeraSettings.DACFULLSCALE*(math.pow(2, ChimeraSettings.DACBITS)))
fastcDACcode = np.uint16((-newCfastDACvoltage + 0.5*ChimeraSettings.DACFULLSCALE)/ChimeraSettings.DACFULLSCALE * (math.pow(2, ChimeraSettings.DACBITS)))
mydacvector = np.uint32(VECTOR_biasDAC_AD5541A(ChimeraSettings,biasDACcode,fastcDACcode))
CHIMERA_sendscanvector1(ChimeraSettings, xem, np.transpose(mydacvector))
def CHIMERA_sendscanvector1(ChimeraSettings,xem, scanvectorfile):
bitinversions = 0
pack32 = np.uint32(scanvectorfile)
packbixor = pack32 | bitinversions
packet1 = packbixor.view(np.uint8)
packet = bytearray(packet1)
modu = np.mod(len(packet), 16)
if modu:
packet.reverse()
for x in range(0, modu):
packet.append(0)
packet.reverse()
bytes_sent = xem.WriteToPipeIn(ChimeraSettings.EP_PIPEIN_SCANCHAINS, packet)
def CHIMERA_updateDPOTvalues1(ChimeraSettings, xem):
myDPOTvalue = ChimeraSettings.freqComp
DPOTbits = 8
DPOTcode = np.uint8(np.round(myDPOTvalue/100*(math.pow(2,DPOTbits))))
mydacvector = np.concatenate([VECTOR_DPOT_AD5262(ChimeraSettings, DPOTcode, 0), VECTOR_DPOT_AD5262(ChimeraSettings, DPOTcode, 1)])
CHIMERA_sendscanvector1(ChimeraSettings, xem, mydacvector)
def VECTOR_DPOT_AD5262(ChimeraSettings, DPOTvalue, DPOTaddress):
DPOTdata = np.zeros(ChimeraSettings.DPOT_SCANCHAIN_LENGTH, dtype=np.int)
DPOTdata[ChimeraSettings.DPOT_A-1] = DPOTaddress
DPOTbits = 8
getBin = lambda x, n: x >= 0 and str(bin(x))[2:].zfill(n) or "-" + str(bin(x))[3:].zfill(n)
binaryarray = getBin(DPOTvalue,DPOTbits)
binaryarray = np.array(list(binaryarray),dtype=int)
DPOTdata[ChimeraSettings.DPOT_LSB-1:ChimeraSettings.DPOT_MSB] = np.flipud(binaryarray)
returnvector = ChimeraSettings.EPBIT_DPOT_SDI * DPOTdata
returnvector1 = np.array(upsample(returnvector,2,0), dtype=np.int)
returnvector2 = np.array(upsample(returnvector,2,1), dtype=np.int)
returnvector = returnvector1 + returnvector2
vectorlength = len(returnvector)
v = np.arange(2, vectorlength + 2, dtype=np.int)
myclk = 0.5 + 0.5 * scipy.signal.square(1/1*3.1416*v)
returnvector = returnvector + np.array(ChimeraSettings.EPBIT_DPOT_CLK * myclk,dtype=np.int)
returnvector = np.flipud(returnvector)
returnvector = np.concatenate((np.array([ChimeraSettings.EPBIT_DPOT_NCS,0],dtype=int), returnvector, np.array([0, ChimeraSettings.EPBIT_DPOT_NCS],dtype=int)))
returnvector = returnvector + np.array(ChimeraSettings.EP_ACTIVELOWBITS-ChimeraSettings.EPBIT_DPOT_NCS,dtype=int)
return returnvector
def VECTOR_biasDAC_AD5541A(ChimeraSettings,biasdacvalue, fastcdacvalue):
biasDACdata = np.zeros(ChimeraSettings.DAC_SCANCHAIN_LENGTH, dtype=np.int)
fastcDACdata = np.zeros(ChimeraSettings.DAC_SCANCHAIN_LENGTH, dtype=np.int)
DACbits = 16
biasDACbinary = np.zeros(DACbits, dtype=np.int)
binarystring = "{0:b}".format(biasdacvalue)
binaryarray = np.array(list(binarystring), dtype=int)
biasDACbinary[DACbits-len(binaryarray):DACbits] = binaryarray
fastcDACbinary = np.zeros(DACbits, dtype=np.int)
binarystring = "{0:b}".format(fastcdacvalue)
binaryarray = np.array(list(binarystring), dtype=int)
fastcDACbinary[DACbits-len(binaryarray):DACbits] = binaryarray
biasDACdata = np.flipud(biasDACbinary)
fastcDACdata = np.flipud(fastcDACbinary)
returnvector = ChimeraSettings.EPBIT_DACSDI * biasDACdata + ChimeraSettings.EPBIT_DACSDI_FASTC * fastcDACdata
upreturn = upsample(returnvector,2,0) + upsample(returnvector,2,1)
vectorlength = len(upreturn)
v = np.arange(2, vectorlength + 2, dtype=np.int)
myclk = 0.5 + 0.5*scipy.signal.square(1/1*3.1416*v)
returnvector = upreturn + ChimeraSettings.EPBIT_DACCLK*myclk
returnvector = np.flipud(returnvector)
returnvector = np.concatenate([[ChimeraSettings.EPBIT_DACNCS + ChimeraSettings.EPBIT_DAC_NLOAD, ChimeraSettings.EPBIT_DACNCS + ChimeraSettings.EPBIT_DAC_NLOAD, ChimeraSettings.EPBIT_DAC_NLOAD], returnvector + ChimeraSettings.EPBIT_DAC_NLOAD, [ChimeraSettings.EPBIT_DACNCS + ChimeraSettings.EPBIT_DAC_NLOAD, ChimeraSettings.EPBIT_DACNCS + ChimeraSettings.EPBIT_DAQTRIGGER, ChimeraSettings.EPBIT_DACNCS + ChimeraSettings.EPBIT_DAC_NLOAD]])
returnvector = returnvector + (ChimeraSettings.EP_ACTIVELOWBITS - ChimeraSettings.EPBIT_DACNCS - ChimeraSettings.EPBIT_DAC_NLOAD)
lastelement = returnvector[len(returnvector)-1]
returnvector = np.concatenate([returnvector, lastelement*np.ones(32)])
return returnvector
def SetADCInput(ChimeraSettings, xem, mux):
wiremask = ChimeraSettings.EPBIT_ADC1MUX0 + ChimeraSettings.EPBIT_ADC1MUX1
wirevalue=0
if mux == 'VIN1':
wirevalue = wirevalue + ChimeraSettings.EPBIT_ADC1MUX1
if mux == 'Filtered':
wirevalue = wirevalue + ChimeraSettings.EPBIT_ADC1MUX0
if mux == 'AUXJ14':
wirevalue = 3
if mux == 'Unfiltered':
wirevalue = 0
out = xem.SetWireInValue(ChimeraSettings.EP_WIREIN_ADCMUX, wirevalue, wiremask)
xem.UpdateWireIns()
# Bandwith Timer
def CHIMERA_bandwidthtimer(ChimeraSettings, xem):
np.set_printoptions(precision=3)
#globals.init()
mytime=datetime.datetime.today()-ChimeraSettings.timezero
mytimestring=str(mytime)
text_time=mytimestring
text_readrate=ChimeraSettings.read_monitor/2000
text_writerate=ChimeraSettings.write_monitor/2000
xem.UpdateWireOuts()
fifolevel = 4*(xem.GetWireOutValue(ChimeraSettings.EP_WIREOUT_ADCFIFOCOUNT) & int('0111111111111111', 2))
#globals.write_monitor=0
#globals.read_monitor=0
textOutputs = {'text_time': text_time, 'USB_readrate': text_readrate,'USB_writerate':text_writerate,'buffer':fifolevel, 'bufferPC': math.floor(100*fifolevel/ChimeraSettings.HWBUFFERSIZE_KB), 'bufferseconds': fifolevel*1024/(100e6 / 24 * 2)}
return textOutputs

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