mangavalk/lcdproc
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Added Stephen Davies output register extension code.

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This commit is contained in:
robijn
2002-06-03 21:34:24 +00:00
parent f13e87b912
commit 77e6977196
7 changed files with 83 additions and 13 deletions
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server/drivers/hd44780.c
+32 -2
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@@ -9,7 +9,7 @@
*
* To add support for additional HD44780 connections:
* 1. Add a connection type and mapping to hd44780-drivers.h
* 2. Call your initialisation routine
* 2. Call your initialisation roUine
* 3. Create the low-level driver (use hd44780-ext8bit.c as a starting point)
* 4. Modify the makefile
*
@@ -151,6 +151,7 @@ HD44780_init (Driver * drvthis, char *args)
p->extIF = drvthis->config_get_bool( drvthis->name, "extended", 0, 0 );
p->have_keypad = drvthis->config_get_bool( drvthis->name, "keypad", 0, 0 );
p->have_backlight = drvthis->config_get_bool( drvthis->name, "backlight", 0, 0 );
p->have_output = drvthis->config_get_bool( drvthis->name, "outputport", 0, 0 );
p->delayMult = drvthis->config_get_int( drvthis->name, "delaymult", 0, 1 );
p->delayBus = drvthis->config_get_bool( drvthis->name, "delaybus", 0, 1 );
@@ -285,12 +286,16 @@ HD44780_init (Driver * drvthis, char *args)
}
}
// Output latch state - init to a non-valid value
p->output_state = 999999;
if ((p->hd44780_functions = (HD44780_functions *) malloc (sizeof (HD44780_functions))) == NULL) {
report (RPT_ERR, "Error mallocing");
return -1;
}
p->hd44780_functions->uPause = uPause;
p->hd44780_functions->scankeypad = HD44780_scankeypad;
p->hd44780_functions->output = NULL;
// Do connection type specific display init
connectionMapping[p->connectiontype_index].init_fn (drvthis);
@@ -299,7 +304,11 @@ HD44780_init (Driver * drvthis, char *args)
HD44780_clear (drvthis);
sprintf (buf, "HD44780 %dx%d", p->width, p->height );
HD44780_string (drvthis, 1, 1, buf);
sprintf (buf, "LPT 0x%x %s %s", p->port, (p->have_backlight?"bl":""), (p->have_keypad?"key":"") );
sprintf (buf, "LPT 0x%x%s%s%s", p->port,
(p->have_backlight?" bl":""),
(p->have_keypad?" key":""),
(p->have_output?" out":"")
);
HD44780_string (drvthis, 1, 2, buf);
HD44780_flush (drvthis);
sleep (2);
@@ -1186,6 +1195,27 @@ unsigned char HD44780_scankeypad(PrivateData *p)
}
/////////////////////////////////////////////////////////////
// Output to the optional output latch(es)
//
MODULE_EXPORT void
HD44780_output (Driver *drvthis, int on)
{
PrivateData *p = drvthis->private_data;
if (!p->have_output) return; /* output disabled */
if (!p->hd44780_functions->output) return; /* unsupported for selected connectiontype */
// perhaps it is better just to do this every time in case of a glitch
// but leaving this in does make sure that any latch-enable line glitches
// are more easily seen
if (p->output_state == on) return;
p->output_state = on;
p->hd44780_functions->output(p, on);
}
/////////////////////////////////////////////////////////////
// Parse the span list
// spanListArray - array to store vertical spans