Initial dump from Sourceforge website

dev/adc_diff

@@ -0,0 +1,76 @@
+Index: adc7843.c
+===================================================================
+RCS file: /cvsroot/pgui/pgserver/input/adc7843.c,v
+retrieving revision 1.6
+diff -u -r1.6 adc7843.c
+--- adc7843.c	3 Jul 2002 22:03:29 -0000	1.6
++++ adc7843.c	6 Nov 2002 00:25:45 -0000
+@@ -60,16 +60,16 @@
+ 
+ int adc7843_fd;
+ 
+-struct tpanel_sample {
+-	u16 state;
+-	u16 x;
+-	u16 y;
+-};
+-
+ /******************************************** Implementations */
+ 
+ g_error adc7843_init(void) {
+    adc7843_fd = open("/dev/tpanel",O_NONBLOCK);
++
++   /* devfs name */
++
++   if (adc7843_fd <= 0)
++      adc7843_fd = open("/dev/misc/adc7843", O_NONBLOCK);
++
+    if (adc7843_fd <= 0)
+      return mkerror(PG_ERRT_IO, 74);
+    
+@@ -87,9 +87,10 @@
+ }
+ 
+ int adc7843_fd_activate(int fd) {
+-   struct tpanel_sample ts;
++   int state;
+    char buffer[6];
+-   int trigger, x, y;
++   int trigger;
++   static int x=0, y=0;
+ 
+    if (!cal) {
+       if (!vid)
+@@ -107,17 +108,22 @@
+      return 1;
+     
+    /* Convert the bytes to unsigned integers... */
+-   ts.state = ( ( (buffer[0]) << 8 ) + buffer[1] );
+-   ts.x = ( ( (buffer[2]) << 8 ) + buffer[3] );
+-   ts.y = ( ( (buffer[4]) << 8 ) + buffer[5] );
+-   x = ts.x;
+-   y = ts.y;
+-
+-   /* Converte to screen coordinates... */
+-   x = ( ( ts.x - cal->min_x ) * cal->x_res / ( cal->max_x - cal->min_x ) );
+-   y = ( ( ts.y - cal->min_y ) * cal->y_res / ( cal->max_y - cal->min_y ) );
++   state = ( ( (buffer[0]) << 8 ) + buffer[1] );
++
++   /* save x,y in static variables. when pen up, send the last known
++      coordinates */
++
++   if (state) { 
++      x = ( ( (buffer[2]) << 8 ) + buffer[3] );
++      y = ( ( (buffer[4]) << 8 ) + buffer[5] );
++
++      /* Convert to screen coordinates... */
++      x = ( ( x - cal->min_x ) * cal->x_res / ( cal->max_x - cal->min_x ) );
++      y = ( ( y - cal->min_y ) * cal->y_res / ( cal->max_y - cal->min_y ) );
++   }
+    
+-   infilter_send_pointing(PG_TRIGGER_PNTR_STATUS,x,y,ts.state,NULL);
++   infilter_send_pointing(PG_TRIGGER_PNTR_STATUS,x,y,state,NULL);
++
+    return 1;
+ }
+