The SLCD driver is now fully functional for Sure PIC32MX board

2 files changed, 26 insertions, 4 deletions

diff --git a/apps/ChangeLog.txt b/apps/ChangeLog.txt
index 910cd113e..4680ab194 100644
--- a/apps/ChangeLog.txt
+++ b/apps/ChangeLog.txt
@@ -85,7 +85,7 @@
 	* apps/examples/usbstorage: Can now be built as two NSH "built-in" commands:
 	  'msconn' will connect the USB mass storage device; 'msdis' will disconnect
 	  the USB storage device.
-	* apps/examples/nx*:  All NX header files moved from nuttx/include/nuttx to 
+	* apps/examples/nx*:  All NX header files moved from nuttx/include/nuttx to
 	  nuttx/include/nuttx/nx.
 	* apps/examples/usbstorage: Added instrumentation to monitor memory usage
 	  to check for memory leaks in the USB storage driver.
@@ -116,7 +116,7 @@
 	* apps/examples/lcdrw:  Add a test to verify if you can or can or read
 	  data from an LCD correctly.
 	* apps/examples/usbterm:  A USB terminal example.. more of a USB chat or
-	  serial bridge:  Data received on local console echoed via USB serial; 
+	  serial bridge:  Data received on local console echoed via USB serial;
 	  data received on USB serial is echoed on the local console.
 	* apps/examples/touchscreen:  Add a simple, generic test for any
 	  touschscreen driver.
@@ -301,7 +301,7 @@
 	  moved from apps/netutils/webserver/makefsdata to nuttx/tools/mkfsdata.pl
 	  (Part of a larger change submitted by Max Holtzberg).
 	* apps/netutils/webserver, apps/examples/uip, and apps/include/netutils/httpd.h:
-	  The "canned" version of the uIP web servers content that was at 
+	  The "canned" version of the uIP web servers content that was at
 	  netutils/webserver/httpd_fsdata.c has been replaced with a dynamically
 	  built configuration located at apps/examples/uip (Contributed by
 	  Max Holtzberg).
@@ -564,3 +564,5 @@
 	  segment LCDs (2013-5-24).
 	* apps/examples/slcd:  Extend SLCD test to handle multi-line displays
 	  (2013-5-26).
+	* apps/examples/slcd:  This test now sets the SLCD brightness level to
+	  the mid-point as part of its initialization (2013-5-27).
diff --git a/apps/examples/slcd/slcd_main.c b/apps/examples/slcd/slcd_main.c
index e7f0ff00f..ecdd4a2b2 100644
--- a/apps/examples/slcd/slcd_main.c
+++ b/apps/examples/slcd/slcd_main.c
@@ -279,6 +279,8 @@ int slcd_main(int argc, char *argv[])
 
   if (!priv->initialized)
     {
+      unsigned long brightness;
+
       /* Initialize the output stream */
 
       memset(priv, 0, sizeof(struct slcd_test_s));
@@ -296,8 +298,11 @@ int slcd_main(int argc, char *argv[])
           goto errout_with_fd;
         }
 
-      printf("Geometry rows: %d columns: %d nbars: %d\n",
+      printf("Attributes:\n");
+      printf("  rows: %d columns: %d nbars: %d\n",
              priv->attr.nrows, priv->attr.ncolumns, priv->attr.nbars);
+      printf("  max contrast: %d max brightness: %d\n",
+             priv->attr.maxcontrast, priv->attr.maxbrightness);
 
       /* Home the cursor and clear the display */
 
@@ -305,6 +310,21 @@ int slcd_main(int argc, char *argv[])
       slcd_encode(SLCDCODE_CLEAR, 0, &priv->stream);
       slcd_flush(&priv->stream);
 
+      /* Set the brightness to the mid value */
+
+      brightness = ((unsigned long)priv->attr.maxbrightness + 1) >> 1;
+      printf("Set brightness to %ld\n", brightness);
+
+      ret = ioctl(fd, SLCDIOC_SETBRIGHTNESS, brightness);
+      if (ret < 0)
+        {
+          /* Report the ioctl failure, but do not error out.  Some SLCDs
+           * do not support brightness settings.
+           */
+
+          printf("ioctl(SLCDIOC_GETATTRIBUTES) failed: %d\n", errno);
+        }
+
       priv->initialized = true;
     }