Made pixy_test screen working again. Had to disable pixy_service. Recalibrated initial touch values.

discovery/libs/Pixy/src/pixy.cpp

@@ -112,7 +112,10 @@ extern "C"
 
   int pixy_service()
   {
-    return interpreter.service();
+      //Service calls are commented at the moment because they cause problems with USB on the discovery.
+      //TODO: Fix problems.
+       return -1;
+      //return interpreter.service();
   }
 
   int pixy_command(const char *name, ...)

discovery/src/ll_touch.c

@@ -103,7 +103,7 @@ void touch_test(uint16_t x, uint16_t y)
 bool ll_touch_init() 
 {
     touch_set_value_convert_mode(true); //Tell the touch module that we need converted values and display calibration
-    touch_set_calibration_values(0x0231, 0x0C08, 0x0287, 0x0B56); //set calibration values (copied from memory using the debugger)
+    touch_set_calibration_values(526, 2922, 588, 2736); //set calibration values (copied from memory using the debugger)
     
     
     //We have a ADS7843 Touch controller

discovery/utils/gdb_usb_breakpoints.script

@@ -0,0 +1,25 @@
+break usbh_msc_core.c:243
+  commands
+    p state
+    bt
+    c
+  end
+break usbh_msc_core.c:249
+  commands
+    c
+  end
+break usbh_msc_core.c:214
+  commands
+    p state
+    bt
+    c
+  end
+break usbh_msc_core.c:221
+  commands
+    c
+  end
+break newlib_stubs.c:153
+break newlib_stubs.c:158
+  commands
+    c
+  end