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- unified hd44780 sub-driver that replaces picanlcd & lcdserializer while

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providing the same functions (Matteo Pillon)
- character mapping for special (almost) hd44780-compatible LCDs (Matteo Pillon)
This commit is contained in:
marschap
2006-08-13 11:13:13 +00:00
parent 81c0072b82
commit 5f4cfa3b88
13 changed files with 259 additions and 337 deletions
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server/drivers/hd44780.c
+62 -18
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@@ -27,6 +27,9 @@
*
* Modified October 2001 to read the configfile.
*
* Modified August 2006 by Pillon Matteo <matteo.pillon@email.it> to
* allow user selecting charmaps
*
* Moved the delay timing code by Charles Steinkuehler to timing.h.
* Guillaume Filion <gfk@logidac.com>, December 2001
*
@@ -116,6 +119,9 @@ MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 1; // yes, we have no global variables (except for constants)
MODULE_EXPORT char *symbol_prefix = "HD44780_";
#define IF_TYPE_PARPORT 0
#define IF_TYPE_USB 1
#define IF_TYPE_SERIAL 2
/////////////////////////////////////////////////////////////////
// Opens com port and sets baud correctly...
@@ -128,7 +134,7 @@ HD44780_init (Driver * drvthis)
char buf[40];
char *s;
int i;
int usb = 0;
int if_type = IF_TYPE_PARPORT;
PrivateData *p;
// Alocate and store private data
@@ -163,10 +169,16 @@ HD44780_init (Driver * drvthis)
return -1; // fatal error
} else {
p->connectiontype_index = i;
/* check if ConnectionType contains the string "USB" or "usb" */
if ((strstr(connectionMapping[i].name, "usb") != NULL) ||
(strstr(connectionMapping[i].name, "USB") != NULL))
usb = 1;
/* check if ConnectionType contains the string "usb" or "USB" */
if ((strstr(connectionMapping[p->connectiontype_index].name, "usb") != NULL) ||
(strstr(connectionMapping[p->connectiontype_index].name, "USB") != NULL))
if_type = IF_TYPE_USB;
/* check if it is the serial driver */
for (i = 0; i < (sizeof(serial_interfaces)/sizeof(SerialInterface)); i++) {
if (strcasecmp(connectionMapping[p->connectiontype_index].name,
serial_interfaces[i].name)==0)
if_type = IF_TYPE_SERIAL;
}
}
// Get and parse vspan only when specified
@@ -284,6 +296,28 @@ HD44780_init (Driver * drvthis)
}
}
// Get configured charmap
char conf_charmap[MAX_CHARMAP_NAME_LENGHT];
strncpy(conf_charmap, drvthis->config_get_string(drvthis->name, "charmap", 0, "hd44780_default"), MAX_CHARMAP_NAME_LENGHT);
conf_charmap[MAX_CHARMAP_NAME_LENGHT-1]='\0';
p->charmap=0;
for (i=0; i<(sizeof(available_charmaps)/sizeof(struct charmap)); i++) {
if (strcasecmp(conf_charmap, available_charmaps[i].name) == 0) {
p->charmap=i;
break;
}
}
if (p->charmap != i) {
report(RPT_ERR, "%s: Charmap %s is unknown", drvthis->name, conf_charmap);
report(RPT_ERR, "%s: Available charmaps:", drvthis->name);
for (i=0; i<(sizeof(available_charmaps)/sizeof(struct charmap)); i++) {
report(RPT_ERR, " %s", available_charmaps[i].name);
}
return -1;
}
report(RPT_INFO, "%s: Using %s charmap", drvthis->name, available_charmaps[p->charmap].name);
// Output latch state - init to a non-valid value
p->output_state = 999999;
@@ -303,18 +337,28 @@ HD44780_init (Driver * drvthis)
HD44780_clear (drvthis);
sprintf (buf, "HD44780 %dx%d", p->width, p->height );
HD44780_string (drvthis, 1, 1, buf);
if (usb) {
sprintf(buf, "USB %s%s%s",
(p->have_backlight ? " bl" : ""),
(p->have_keypad ? " key" : ""),
(p->have_output ? " out" : ""));
}
else {
sprintf(buf, "LPT 0x%03X%s%s%s", p->port,
(p->have_backlight ? " bl" : ""),
(p->have_keypad ? " key" : ""),
(p->have_output ? " out" : ""));
}
switch(if_type) {
case IF_TYPE_USB:
sprintf (buf, "USB %s%s%s",
(p->have_backlight?" bl":""),
(p->have_keypad?" key":""),
(p->have_output?" out":"")
);
break;
case IF_TYPE_SERIAL:
sprintf (buf, "SERIAL %s%s%s",
(p->have_backlight?" bl":""),
(p->have_keypad?" key":""),
(p->have_output?" out":"")
);
break;
default:
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);
@@ -475,7 +519,7 @@ HD44780_flush (Driver *drvthis)
drawing = 1;
HD44780_position(drvthis,x,y);
}
p->hd44780_functions->senddata (p, p->spanList[y], RS_DATA, HD44780_charmap[(unsigned char)ch]);
p->hd44780_functions->senddata (p, p->spanList[y], RS_DATA, available_charmaps[p->charmap].charmap[(unsigned char)ch]);
p->hd44780_functions->uPause (p, 40); // Minimum exec time for all commands
p->lcd_contents[(y*wid)+x] = ch;
count++;