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The SLCD driver is now fully functional for Sure PIC32MX board

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This commit is contained in:
Gregory Nutt 2013-05-27 11:39:13 -06:00
parent 819e151ef5
commit 2dae842445
2 changed files with 26 additions and 4 deletions
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2
ChangeLog.txt
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@ -564,3 +564,5 @@
segment LCDs (2013-5-24). segment LCDs (2013-5-24).
* apps/examples/slcd: Extend SLCD test to handle multi-line displays * apps/examples/slcd: Extend SLCD test to handle multi-line displays
(2013-5-26). (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).

22
examples/slcd/slcd_main.c
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@ -279,6 +279,8 @@ int slcd_main(int argc, char *argv[])
if (!priv->initialized) if (!priv->initialized)
{ {
unsigned long brightness;
/* Initialize the output stream */ /* Initialize the output stream */
memset(priv, 0, sizeof(struct slcd_test_s)); memset(priv, 0, sizeof(struct slcd_test_s));
@ -296,8 +298,11 @@ int slcd_main(int argc, char *argv[])
goto errout_with_fd; 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); 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 */ /* 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_encode(SLCDCODE_CLEAR, 0, &priv->stream);
slcd_flush(&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; priv->initialized = true;
} }