From: Dan White <dan@whiteaudio.com>
Date: Mon, 3 Sep 2012 23:48:31 +0000 (-0500)
Subject: Speedup calibration, run some more
X-Git-Tag: calibrations~9
X-Git-Url: http://git.whiteaudio.com/gitweb/?a=commitdiff_plain;h=da7c6e64ad363e54f5f5ccd79a91df99e0cd22d9;p=430.git

Speedup calibration, run some more
---

diff --git a/python-lib/calibrate.py b/python-lib/calibrate.py
index 7dd6631..cb4397f 100644
--- a/python-lib/calibrate.py
+++ b/python-lib/calibrate.py
@@ -54,7 +54,7 @@ def bisect(fset, limits=[0.0, 1.0], dgmin=None, up='uk', down='dj'):
 
 
 
-def secant_opt(func, x0, limits, x1scale=0.1, maxiter=100, k=1.0):
+def secant_opt(func, x0, limits, x1scale=0.1, maxiter=50, k=1.0):
     """
     Find the function's zero on a bounded interval using the secant method.
 
@@ -81,19 +81,19 @@ def secant_opt(func, x0, limits, x1scale=0.1, maxiter=100, k=1.0):
         return int64(around(x))
         #return int(round(max(min(x, xmax), xmin)))
 
-    def eval(x):
-        print 'eval:'
-        print x[0:N_CHANNELS]
+    def feval(x):
+        #print 'feval:'
+        #print x[0:N_CHANNELS]
         r = func(x)
         guesses.append(x)
         results.append(r)
         return r
 
-    q0 = eval(p0)
+    q0 = feval(p0)
     r = xmax - xmin
     p1 = saturate(p0 - sign(q0)*x1scale*r)
 
-    q1 = eval(p1)
+    q1 = feval(p1)
     for niter in range(maxiter):
         iz = find(q1==q0)
         q1.flat[iz] = q1.flat[iz] + 1e-6
@@ -113,7 +113,7 @@ def secant_opt(func, x0, limits, x1scale=0.1, maxiter=100, k=1.0):
         dp *= converging
 
         p = saturate(p1 - dp)
-        q = eval(p)
+        q = feval(p)
 
         # Convergence criteria
         #   x to varies by (+1,-1) or (-1,+1)
@@ -162,7 +162,7 @@ def mux_a_offset(x):
     values = []
     for i in range(N_SAMPLES):
         values.append(offset2signed(adc.read(), 16))
-        sleep(DELAY)
+        sleep(SAMPLE_DELAY)
     mv = mean(values)
     print tpx(xi), tplot(mv)
     return array((mv,))
@@ -175,7 +175,7 @@ def mux_b_offset(x):
     values = []
     for i in range(N_SAMPLES):
         values.append(offset2signed(adc.read(), 16))
-        sleep(DELAY)
+        sleep(SAMPLE_DELAY)
     mv = mean(values)
     print tpx(xi), tplot(mv)
     return array((mv,))
@@ -204,6 +204,7 @@ def chain_outputs(n):
     adc.triggerMode(adc.MODE_IDLE)
     adc.mux(4) #mux.otaA
     adc.fifo(1)
+    adc.triggerMode(adc.MODE_MANUAL_MANUAL)
 
     plotter = TermPlotter([-1000, 1000], width=80)
 
@@ -213,26 +214,36 @@ def chain_outputs(n):
         mux.selB = i
         mux.write()
 
+        sleep(MUX_SETTLE_DELAY)
         for j in range(2):
             adc.mux(4+j)
-            sleep(0.1)
-            adc.triggerMode(adc.MODE_MANUAL_MANUAL)
+            #sleep(0.1)
+            #adc.triggerMode(adc.MODE_MANUAL_MANUAL)
             #adc.triggerMode(adc.MODE_AUTO_AUTO_SINGLE)
             adc.read()
             values = []
             #print
-            for k in range(N_SAMPLES):
+            v = offset2signed(adc.read(), 16)
+            values.append(v)
+            for k in range(N_SAMPLES-1):
+                sleep(SAMPLE_DELAY)
                 v = offset2signed(adc.read(), 16)
                 #print plotter(v)
                 values.append(v)
-                sleep(DELAY)
-            mv = mean(values[-1*min(10, N_SAMPLES):-1])
+            if N_SAMPLES >= 2:
+                mv = mean(values[-1*min(10, N_SAMPLES):-1])
+            else:
+                mv = values[0]
             outs[j, i] = mv
 
+    print '*** measured outputs: ***'
     print outs[:,0:N_CHANNELS]
     return outs
 
 def chain_offsets(values, mux_offset):
+    print
+    print '*** sending values: ***'
+    print values[0:N_CHANNELS]
     for i,n in enumerate(values[0]):
         chain.h[i].otaA.offset = int(n)
         chain.h[i].cal = 1
@@ -276,8 +287,10 @@ adc.triggerMode(adc.MODE_MANUAL_MANUAL)
 
 
 N_CHANNELS = 48
-N_SAMPLES = 10
-DELAY = 0.05
+MUX_SETTLE_DELAY = 0.1
+N_SAMPLES = 1
+SAMPLE_DELAY = 0.02
+
 
 import datetime as dt
 
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diff --git a/python-lib/test-data/chip02/stats.py b/python-lib/test-data/chip02/stats.py
index e263e24..873d7b5 100644
--- a/python-lib/test-data/chip02/stats.py
+++ b/python-lib/test-data/chip02/stats.py
@@ -11,34 +11,35 @@ cal_outs = []
 N_RUNS = 8
 sample_runs = randint(48, size=(N_RUNS,))
 N_PLOTS = 4
+sample_channels = sorted(randint(48, size=(N_PLOTS,)))
 N_COLS = 4
 nrun = 0
 for infile in sorted(glob('*.npz')):
+#for infile in sorted(glob('2012-09-03_1*.npz')):
     d = np.load(infile)
 
     #print infile, d.keys()
 
     guesses = d['guesses']
     results = d['results']
+    nevals = d['nevals']
 
     d.close() # close file descriptor
     
     if 1:
-        for i in range(N_PLOTS):
+        for i,k in enumerate(sample_channels):
             if nrun not in sample_runs:
                 continue
-            g = guesses[:, 0, i]
-            r = 1e3*(2.5/2/2**13)*results[:, 0, i]
-            #print g
-            #print r
+            g = guesses[:, 0, k]
+            r = 1e3*(2.5/2/2**13)*results[:, 0, k]
 
             subplot(N_PLOTS, N_COLS, N_COLS*i+1)
-            plot(g, '-')
+            plot(g[:nevals[0,k]+1], '-')
             ylim((0, 127))
-            ylabel('Channel %02i-A' % i)
+            ylabel('Channel %02i-A' % k)
 
             subplot(N_PLOTS, N_COLS, N_COLS*i+2)
-            plot(r, '-')
+            plot(r[:nevals[0,k]+1], '-')
 
         subplot(N_PLOTS, N_COLS, 1)
         title('calibration value')