[commit] r3606 - cpu/arm/olpc

[repository service]

Author: quozl
Date: Wed Mar 13 06:17:36 2013
New Revision: 3606
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3606

Log:
OLPC XO-4 - touchscreen test, nonlinearity test, add targets, remove guide line, begin recording when target hit, stop recording when next target hit, tune minimum points, span, stride, and threshold.  Remove test from menu, access only via select /touchscreen, test-nonlinearity.

Modified:
   cpu/arm/olpc/nn-touchscreen.fth

Modified: cpu/arm/olpc/nn-touchscreen.fth
==============================================================================
--- cpu/arm/olpc/nn-touchscreen.fth	Wed Mar 13 06:09:24 2013	(r3605)
+++ cpu/arm/olpc/nn-touchscreen.fth	Wed Mar 13 06:17:36 2013	(r3606)
@@ -900,8 +900,6 @@
    until drop                                   ( )
 ;

-d#  50 value #skip  \ Number of initial points to ignore for line
-0 value skipping?   \ Current skip count
 : ev(
    configure
    cursor-off
@@ -910,7 +908,6 @@
    blacken
    .tsmsg
    -1 to remaining
-   #skip to skipping?
 ;

: )ev
@@ -925,6 +922,10 @@

\ Nonlinearity test

+d#  50 value #skip  \ Number of initial points to ignore for line
+0 value skipping?   \ Current skip count
+0 value starting?
+
 d# 2000 constant #pts-max

#pts-max /w* value /buf
@@ -932,6 +933,37 @@
 0 value ybuf
 0 value #pts

+h# 80 value target-size
+
+: draw-start  ( colour -- )
+   0 screen-h target-size -  target-size dup  fill-rectangle-noff
+;
+
+: draw-stop  ( colour -- )
+   screen-w target-size - 0  target-size dup  fill-rectangle-noff
+;
+
+: in-start?  ( x y -- flag )
+   screen-h target-size - screen-h between
+   swap
+   0 target-size between
+   and
+   dup if  blue draw-start  then
+;
+
+: in-stop?  ( x y -- flag )
+   0 target-size between
+   swap
+   screen-w target-size - screen-w between
+   and
+   dup if  blue draw-stop  then
+;
+
+: draw-targets  ( -- )
+   green  draw-start
+   red    draw-stop
+;
+
 : alloc-bufs ( -- )
    /buf alloc-mem to xbuf
    /buf alloc-mem to ybuf
@@ -1031,8 +1063,13 @@
    swap -   -rot                     ( intercept  num den )
 ;

+
 : do-point  ( x y -- )
    skipping?  ?dup  if  1- to skipping?  2drop exit  then
+   starting?  if
+      2dup in-start?  if  false to starting?  else  2drop exit  then
+   then
+   2dup in-stop?   if  0 to remaining  2drop exit  then
    2dup add-pt  dot
 ;

@@ -1105,8 +1142,9 @@
 ;

0 value nl-max  0 value nl-loc
-d#  60 value nl-span
-d#  30 value nl-stride
+d# 160 value nl-span
+d#  10 value nl-stride
+d#  40 value nl-threshold
 : max-nonlinearity  ( intercept num den -- nl )
    0 to nl-max                      ( intercept num den )
    0 to nl-loc
@@ -1142,30 +1180,51 @@
       magenta color-nl  d# 500 ms
    loop
 ;
+: at-5pm  d# 30 d# 27 at-xy  ." "(1b)[K"  ;
+: .tsmsg-drag
+   at-5pm  ."  Drag between targets."  cr
+;
+: .tsmsg-few
+   at-5pm  ."  Too few points.  Draw the line slowly.    "  cr
+;

\ TODO:
 \ 1) Message and retry if slope and intercept not approximately correct
 \    slope can be checked with
 \       ( num den ) h# 10000 -rot */ LOW HIGH within
 \       ( expected slope is negative , so LOW and HIGH are negative )
-\ 2) Establish threshold for nonlinearity and fail if exceeded
 \ 3) Perhaps integrate the nonlinearity test with the targets test?

+: ((test-nonlinearity))
+   ['] .tsmsg-drag to .tsmsg
+   begin  ev(
+      draw-targets
+      0 to #pts
+      #skip to skipping?
+      true to starting?
+      ['] do-point ev
+   #pts d# 400 <  while
+      .tsmsg-few  ['] .tsmsg-few to .tsmsg
+      d# 1000 ms
+   repeat
+;
+
+: (test-nonlinearity)  ( -- nonlinearity )
+   ((test-nonlinearity))
+   linear-least-squares                    ( intercept num den )
+   3dup red draw-line                      ( intercept num den )
+   max-nonlinearity                        ( nonlinearity )
+   at-5pm dup ."  Nonlinearity: "  .d  cr  ( nonlinearity )
+   show-nonlinearity                       ( nonlinearity )
+;
+
 : test-nonlinearity
+   d# 86400.000 to test-timeout
    alloc-bufs
-      begin  ev(
-         0 to #pts
-         0 d# 27 at-xy  ."  Follow the line.  Type a key to exit " cr
-         screen-h 6 -   screen-h negate  screen-w  blue  draw-line
-         ['] do-point ev  
-      #pts d# 500 <  while
-         0 d# 27 at-xy  ."  Too few points.  Draw the line slowly" cr
-	 d# 2000 ms
-      repeat
-      linear-least-squares  ( intercept num den )
-      3dup red draw-line    ( intercept num den )
-      ." Nonlinearity: "  max-nonlinearity .d  cr
-      show-nonlinearity
+   begin
+      (test-nonlinearity)
+      nl-threshold <=
+   until
    )ev
    free-bufs
 ;
@@ -1334,7 +1393,6 @@

: mb-final  ( -- error? )
    open  0=  if true exit  then
-   d# 86400.000 to test-timeout
    ['] test-nonlinearity  catch  ?dup  if  .error fault  then
    close
    faults
@@ -1348,7 +1406,7 @@
    test-station case
       h#  1  of  mb-smt  exit  endof
       h#  2  of  mb-assy  exit  endof
-      h#  4  of  mb-final  exit  endof
+      h#  4  of  mb-smt  exit  endof
       h# 11  of  ir-pcb-smt  exit  endof
       h# 12  of  ir-pcb-assy  exit  endof
       h# 13  of  lg-tooling  exit  endof