#return int(round(max(min(x, xmax), xmin)))
def eval(x):
- print 'eval:', x[0:N_CHANNELS]
+ print 'eval:'
+ print x[0:N_CHANNELS]
r = func(x)
- print r.shape, x.shape
guesses.append(x)
results.append(r)
return r
q0 = eval(p0)
r = xmax - xmin
- print type(q0), q0
p1 = saturate(p0 - sign(q0)*x1scale*r)
- #if q0 > 0.0:
- #p1 = saturate(p0 - x1scale * r)
- #else:
- #p1 = saturate(p0 + x1scale * r)
q1 = eval(p1)
for niter in range(maxiter):
iz = find(q1==q0)
q1.flat[iz] = q1.flat[iz] + 1e-6
- #dp = converging*q1*(p1 - p0)/(q1 - q0)
- dp = q1*(p1 - p0)/(q1 - q0)
+ #dp = q1*(p1 - p0)/(q1 - q0)
dp = q1*abs(p1 - p0)/abs(q1 - q0)
#dp = k*q1*(p1 - p0)/(q1 - q0)
#dp = k*sign(q1)*abs(p1-p0)
#unless the channel is done...
dp *= converging
- #if abs(dp) < 1.0:
- #if dp < 0.0:
- #dp = -1
- #else:
- #dp = 1
p = saturate(p1 - dp)
q = eval(p)
# Convergence criteria
# x to varies by (+1,-1) or (-1,+1)
# or 3 consecutive guesses the same
- #d0 = p1 - p0
- #d1 = p - p1
- #if all(abs(d0) == 1) and all(abs(d1) == 1) and (d0 == -1*d1):
for i in range(x0.size):
d0 = p1.flat[i] - p0.flat[i]
d1 = p.flat[i]- p1.flat[i]
if (a0 <= a1) and (a <= a1):
converging.flat[i] = 0
evaluations.flat[i] = 3 + niter
- #print 'channel done:', i
- #print converging
- #return p0
- #else:
- #print "false alarm, almost there..."
- ##return p1
+
print converging[0:N_CHANNELS]
if not (sum(converging[0:N_CHANNELS]) > 0.0):
return (p0, {'nevals': evaluations,
def mux_a_offset(x):
- #xi = int(round(x))
xi = int(x[0])
mux.otaA.offset = xi
mux.write()
sleep(DELAY)
mv = mean(values)
print tpx(xi), tplot(mv)
- return mv #- mux_offset
+ return mv
def chain_outputs(n):
plotter = TermPlotter([-1000, 1000], width=80)
- #outA = []
- #outB = []
outs = zeros((2, n+1))
- print outs.shape, outs
for i in range(n+1):
- print 'i:', i
mux.selA = i
mux.selB = i
mux.write()
for j in range(2):
- print 'k:', j
adc.mux(4+j)
sleep(0.1)
adc.triggerMode(adc.MODE_MANUAL_MANUAL)
values.append(v)
sleep(DELAY)
mv = mean(values[-1*min(10, N_SAMPLES):-1])
-
- #sleep(0.01)
outs[j, i] = mv
- #a = mv
- #b = offset2signed(adc.read(), 16)
- #print '%02i:'%i, a, b
- #outA.append(a)
- #outB.append(b)
print outs[:,0:N_CHANNELS]
return outs
- #return array([array(outA), array(outB)])
def chain_offsets(values, mux_offset):
- #for i,n in enumerate(values):
- #chain.h[i].otaA.offset = int(n)
- #chain.h[i].cal = 1
- #chain.h[i].otaA.se = 1
- #chain.h[i].otaA.cint = 0
- #chain.h[i].otaA.zero = 1
- #chain.write()
for i,n in enumerate(values[0]):
chain.h[i].otaA.offset = int(n)
chain.h[i].cal = 1
chain.h[i].otaB.zero = 0
chain.write()
sleep(1.0)
+
outs = chain_outputs(N_CHANNELS-1)
+
for i in range(2):
outs[i,:] -= mux_offset[i]
- #outs = [outA - mux_offset[0], outB - mux_offset[1]]
- print 'here'
+
return array(outs)
- a = randint(-10, 10, (48,))
- #for j in range(N_CHANNELS):
- #a[j] = outA[j]
- #return a - mux_offset
dac.vina(1.25)
dac.vinb(1.25)
-N_CHANNELS = 4
+N_CHANNELS = 2
N_SAMPLES = 10
DELAY = 0.05
-if 0:
- print
- print 'Calibrating mux otaA'
- adc.mux(4)
- resA, tmp = secant_opt(mux_a_offset, zeros((1,), dtype=int), [-128, 127])
- muxA_offset = mean([offset2signed(adc.read(), 16) for i in range(1000)])
- print '*** mux.otaA.offset =', muxA_offset, ' @', resA
-else:
- resA = 53
- muxA_offset = 0.0
-
-
-if 0:
- print
- print 'Calibrating mux otaB'
- adc.mux(5)
- #resB = secant_opt(mux_b_offset, 0, [-128, 127])
- resB, tmp = secant_opt(mux_b_offset, zeros((1,), dtype=int), [-128, 127])
- muxB_offset = mean([offset2signed(adc.read(), 16) for i in range(1000)])
- print '*** mux.otaB.offset =', muxB_offset, ' @', resB
-else:
- resB = 59
- muxB_offset = 0.0
-
-
-if 0:
- offset_chain_a = []
- for n in range(48):
+import datetime as dt
+
+while True:
+ if 1:
print
- print 'Calibrating chain %02i A' % n
- adc.triggerMode(adc.MODE_IDLE)
+ print 'Calibrating mux otaA'
adc.mux(4)
- adc.triggerMode(adc.MODE_MANUAL_MANUAL)
- mux.selA = n
- mux.selB = n
+ resA, tmp = secant_opt(mux_a_offset, zeros((1,), dtype=int), [-128, 127])
+ muxA_offset = mean([offset2signed(adc.read(), 16) for i in range(1000)])
+ print '*** mux.otaA.offset =', muxA_offset, ' @', resA
+ else:
+ resA = 53
+ muxA_offset = 0.0
+
+
+ if 1:
+ print
+ print 'Calibrating mux otaB'
+ adc.mux(5)
+ #resB = secant_opt(mux_b_offset, 0, [-128, 127])
+ resB, tmp = secant_opt(mux_b_offset, zeros((1,), dtype=int), [-128, 127])
+ muxB_offset = mean([offset2signed(adc.read(), 16) for i in range(1000)])
+ print '*** mux.otaB.offset =', muxB_offset, ' @', resB
+ else:
+ resB = 59
+ muxB_offset = 0.0
+
+
+ if 0:
+ offset_chain_a = []
+ for n in range(48):
+ print
+ print 'Calibrating chain %02i A' % n
+ adc.triggerMode(adc.MODE_IDLE)
+ adc.mux(4)
+ adc.triggerMode(adc.MODE_MANUAL_MANUAL)
+ mux.selA = n
+ mux.selB = n
+ mux.otaA.mode = mux.otaA.MUX_BUF
+ mux.otaB.mode = mux.otaB.MUX_BUF
+ mux.write()
+ nos = secant_opt(lambda x: chain_a_offset(x, n, muxA_offset), resA, (-128, 127))
+ mean_os = mean([offset2signed(adc.read(), 16) for i in range(1000)])
+ print '*** chain.h[%02i].otaA.offset =' % n, mean_os, ' @', nos
+ chain_outputs(n)
+
+ if 1:
mux.otaA.mode = mux.otaA.MUX_BUF
mux.otaB.mode = mux.otaB.MUX_BUF
mux.write()
- nos = secant_opt(lambda x: chain_a_offset(x, n, muxA_offset), resA, (-128, 127))
- mean_os = mean([offset2signed(adc.read(), 16) for i in range(1000)])
- print '*** chain.h[%02i].otaA.offset =' % n, mean_os, ' @', nos
- chain_outputs(n)
-
-if 1:
- mux.otaA.mode = mux.otaA.MUX_BUF
- mux.otaB.mode = mux.otaB.MUX_BUF
- mux.write()
- chain_os, stats = secant_opt(lambda x: chain_offsets(x, (muxA_offset, muxB_offset)), resA*ones((2,N_CHANNELS), dtype=int), (-128, 127), k=0.5)
- print '-'*80
- print 'offsets:', chain_os[:N_CHANNELS]
- print 'N-evals:', stats['nevals'][:N_CHANNELS]
- print '-'*80
- print
+ chain_os, stats = secant_opt(lambda x: chain_offsets(x, (muxA_offset, muxB_offset)), resA*ones((2,N_CHANNELS), dtype=int), (-128, 127), k=0.5)
+ print '-'*80
+ print 'offsets:', chain_os[:N_CHANNELS]
+ print 'N-evals:', stats['nevals'][:N_CHANNELS]
+ print '-'*80
+ print
+
+ fname = '%s.npz' % (dt.datetime.now().strftime('%Y-%m-%d_%H%M%S'), )
+ print '*** writing to %s ***' % fname
+ savez(fname,
+ muxres=(resA, resB),
+ muxos=(muxA_offset, muxB_offset),
+ chaincal=chain_os,
+ **stats
+ )
projects / 430.git / commitdiff