diff options
| -rw-r--r-- | drv_HD44780.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drv_HD44780.c b/drv_HD44780.c index c3d776e..371adec 100644 --- a/drv_HD44780.c +++ b/drv_HD44780.c @@ -1,4 +1,4 @@ -/* $Id: drv_HD44780.c,v 1.8 2004/02/01 08:05:12 reinelt Exp $ +/* $Id: drv_HD44780.c,v 1.9 2004/02/01 11:51:22 hejl Exp $ * * new style driver for HD44780-based displays * @@ -29,6 +29,9 @@ * * * $Log: drv_HD44780.c,v $ + * Revision 1.9 2004/02/01 11:51:22 hejl + * Fixes for busy flag + * * Revision 1.8 2004/02/01 08:05:12 reinelt * Crystalfontz 633 extensions (CRC checking and stuff) * Models table for HD44780 @@ -315,7 +318,9 @@ static void drv_HD_byte (unsigned char controller, unsigned char data, unsigned static void drv_HD_command (unsigned char controller, unsigned char cmd, int delay) { unsigned char enable; - + + if (UseBusy) wait_for_busy_flag(controller); + if (Bits==8) { // enable signal: 'controller' is a bitmask @@ -357,8 +362,6 @@ static void drv_HD_data (unsigned char controller, char *string, int len, int de // sanity check if (len<=0) return; - if (UseBusy) wait_for_busy_flag(controller); - if (Bits==8) { // enable signal: 'controller' is a bitmask @@ -599,13 +602,13 @@ static int drv_HD_start (char *section) cfg_number(section, "UseBusy", 0, 0, 1, &UseBusy); // make sure we don't use the busy flag with RW wired to GND - if (UseBusy && SIGNAL_RW) { + if (UseBusy && !SIGNAL_RW) { error("%s: Busyflag is to be used, but RW is wired to GND", Name); UseBusy=0; } - // make shure the display supports busy-flag checking in 4-Bit-Mode - // at the moment this is inly possible with martin Hejl's gpio driver, + // make sure the display supports busy-flag checking in 4-Bit-Mode + // at the moment this is inly possible with Martin Hejl's gpio driver, // which allows to use 4 bits as input and 4 bits as output if (UseBusy && Bits==4 && !(Capabilities&CAP_BUSY4BIT)) { error("%s: Model '%s' does not support busy-flag checking in 4-bit-mode", Name, Models[Model].name); |