diff options
| -rw-r--r-- | drv_HD44780.c | 19 | ||||
| -rw-r--r-- | lcd4linux.conf.sample | 1 |
2 files changed, 17 insertions, 3 deletions
diff --git a/drv_HD44780.c b/drv_HD44780.c index d841a7b..8432057 100644 --- a/drv_HD44780.c +++ b/drv_HD44780.c @@ -1,4 +1,4 @@ -/* $Id: drv_HD44780.c,v 1.1 2004/01/20 15:32:49 reinelt Exp $ +/* $Id: drv_HD44780.c,v 1.2 2004/01/21 06:39:27 reinelt Exp $ * * new style driver for HD44780-based displays * @@ -29,6 +29,11 @@ * * * $Log: drv_HD44780.c,v $ + * Revision 1.2 2004/01/21 06:39:27 reinelt + * HD44780 missed the "clear display' sequence + * asc255bug handling added + * HD44780 tested, works here! + * * Revision 1.1 2004/01/20 15:32:49 reinelt * first version of Next Generation HD44780 (untested! but it compiles...) * some cleanup in the other drivers @@ -347,7 +352,9 @@ static int drv_HD_start (char *section) drv_HD_command (0x03, 0x08, T_EXEC); // Display off, cursor off, blink off drv_HD_command (0x03, 0x0c, T_CLEAR); // Display on, cursor off, blink off, wait 1.64 ms drv_HD_command (0x03, 0x06, T_EXEC); // curser moves to right, no shift - + drv_HD_command (0x03, 0x01, T_CLEAR); // clear *both* displays + drv_HD_command (0x03, 0x03, T_CLEAR); // return home + return 0; } @@ -424,6 +431,7 @@ int drv_HD_list (void) int drv_HD_init (char *section) { WIDGET_CLASS wc; + int asc255bug; int ret; XRES=5; @@ -443,8 +451,13 @@ int drv_HD_init (char *section) return ret; // add fixed chars to the bar driver + // most displays have a full block on ascii 255, but some have kind of + // an 'inverted P'. If you specify 'asc255bug 1 in the config, this + // char will not be used, but rendered by the bar driver + cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug); drv_generic_text_bar_add_segment ( 0, 0,255, 32); // ASCII 32 = blank - drv_generic_text_bar_add_segment (255,255,255,255); // ASCII 255 = block + if (!asc255bug) + drv_generic_text_bar_add_segment (255,255,255,255); // ASCII 255 = block // register text widget wc=Widget_Text; diff --git a/lcd4linux.conf.sample b/lcd4linux.conf.sample index 37beb54..5e08557 100644 --- a/lcd4linux.conf.sample +++ b/lcd4linux.conf.sample @@ -14,6 +14,7 @@ Display myHD44780 { # Port '0x378' Bits '8' Size '20x4' + asc255bug 1 Wire { RW 'GND' RS 'AUTOFD' |