diff options
Diffstat (limited to '')
| -rw-r--r-- | HD44780.c | 24 |
1 files changed, 17 insertions, 7 deletions
@@ -1,4 +1,4 @@ -/* $Id: HD44780.c,v 1.17 2001/03/14 16:47:41 reinelt Exp $ +/* $Id: HD44780.c,v 1.18 2001/03/15 09:47:13 reinelt Exp $ * * driver for display modules based on the HD44780 chip * @@ -20,6 +20,11 @@ * * * $Log: HD44780.c,v $ + * Revision 1.18 2001/03/15 09:47:13 reinelt + * + * some fixes to ppdef + * off-by-one bug in processor.c fixed + * * Revision 1.17 2001/03/14 16:47:41 reinelt * minor cleanups * @@ -315,16 +320,17 @@ static int HD_open (void) error ("open(%s) failed: %s", PPdev, strerror(errno)); return -1; } - + #if 0 - // FIXME: This doesn't work for some reason... if (ioctl(PPfd, PPEXCL)) { - error ("ioctl(%s, PPEXCL) failed: %s", PPdev, strerror(errno)); - return -1; + debug ("ioctl(%s, PPEXCL) failed: %s", PPdev, strerror(errno)); + } else { + debug ("ioctl(%s, PPEXCL) succeded."); } #endif + if (ioctl(PPfd, PPCLAIM)) { - error ("ioctl(%s, PPCLAIM) failed: %s", PPdev, strerror(errno)); + error ("ioctl(%s, PPCLAIM) failed: %d %s", PPdev, errno, strerror(errno)); return -1; } } else @@ -346,6 +352,7 @@ static int HD_open (void) HD_command (0x08, 40); // Display off, cursor off, blink off HD_command (0x0c, 1640); // Display on, cursor off, blink off, wait 1.64 ms HD_command (0x06, 40); // curser moves to right, no shift + return 0; } @@ -736,7 +743,7 @@ int HD_flush (void) if (Txt[row][col]=='\t') break; *p=Txt[row][col]; } - HD_write (buffer, p-buffer, 40); + HD_write (buffer, p-buffer, 40); // 40 usec delay for write } } @@ -749,6 +756,9 @@ int HD_quit (void) { if (PPdev) { debug ("closing ppdev %s", PPdev); + if (ioctl(PPfd, PPRELEASE)) { + error ("ioctl(%s, PPRELEASE) failed: %s", PPdev, strerror(errno)); + } if (close(PPfd)==-1) { error ("close(%s) failed: %s", PPdev, strerror(errno)); return -1; |