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-rw-r--r--cfg.c6
-rw-r--r--drv_HD44780.c108
-rw-r--r--lcd4linux.conf.sample4
3 files changed, 85 insertions, 33 deletions
diff --git a/cfg.c b/cfg.c
index be21ea6..bb4351d 100644
--- a/cfg.c
+++ b/cfg.c
@@ -1,4 +1,4 @@
-/* $Id: cfg.c,v 1.43 2004/11/29 04:42:06 reinelt Exp $^
+/* $Id: cfg.c,v 1.44 2005/01/17 06:29:24 reinelt Exp $^
*
* config file stuff
*
@@ -23,6 +23,9 @@
*
*
* $Log: cfg.c,v $
+ * Revision 1.44 2005/01/17 06:29:24 reinelt
+ * added software-controlled backlight support to HD44780
+ *
* Revision 1.43 2004/11/29 04:42:06 reinelt
* removed the 99999 msec limit on widget update time (thanks to Petri Damsten)
*
@@ -777,7 +780,6 @@ static int cfg_read (const char *file)
int cfg_init (const char *file)
{
if (cfg_check_source(file) == -1) {
- error("config file '%s' is insecure, aborting", file);
return -1;
}
diff --git a/drv_HD44780.c b/drv_HD44780.c
index 1dd6200..3cc9197 100644
--- a/drv_HD44780.c
+++ b/drv_HD44780.c
@@ -1,4 +1,4 @@
-/* $Id: drv_HD44780.c,v 1.40 2004/11/30 05:01:25 reinelt Exp $
+/* $Id: drv_HD44780.c,v 1.41 2005/01/17 06:29:24 reinelt Exp $
*
* new style driver for HD44780-based displays
*
@@ -29,6 +29,9 @@
*
*
* $Log: drv_HD44780.c,v $
+ * Revision 1.41 2005/01/17 06:29:24 reinelt
+ * added software-controlled backlight support to HD44780
+ *
* Revision 1.40 2004/11/30 05:01:25 reinelt
* removed compiler warnings for deactivated i2c bus
*
@@ -280,6 +283,7 @@ static unsigned char SIGNAL_RW;
static unsigned char SIGNAL_RS;
static unsigned char SIGNAL_ENABLE;
static unsigned char SIGNAL_ENABLE2;
+static unsigned char SIGNAL_BACKLIGHT;
static unsigned char SIGNAL_GPO;
/* maximum time to wait for the busy-flag (in usec) */
@@ -306,20 +310,21 @@ typedef struct {
#define CAP_PARPORT (1<<0)
#define CAP_I2C (1<<1)
#define CAP_GPO (1<<2)
-#define CAP_BRIGHTNESS (1<<3)
-#define CAP_BUSY4BIT (1<<4)
-#define CAP_HD66712 (1<<5)
-#define CAP_LCM162 (1<<6)
+#define CAP_BACKLIGHT (1<<3)
+#define CAP_BRIGHTNESS (1<<4)
+#define CAP_BUSY4BIT (1<<5)
+#define CAP_HD66712 (1<<6)
+#define CAP_LCM162 (1<<7)
#define BUS_PP CAP_PARPORT
#define BUS_I2C CAP_I2C
static MODEL Models[] = {
- { 0x01, "generic", CAP_PARPORT|CAP_I2C|CAP_GPO },
+ { 0x01, "generic", CAP_PARPORT|CAP_I2C|CAP_GPO|CAP_BACKLIGHT },
{ 0x02, "Noritake", CAP_PARPORT|CAP_I2C|CAP_GPO|CAP_BRIGHTNESS },
{ 0x03, "Soekris", CAP_PARPORT|CAP_BUSY4BIT },
- { 0x04, "HD66712", CAP_PARPORT|CAP_I2C|CAP_GPO|CAP_HD66712 },
+ { 0x04, "HD66712", CAP_PARPORT|CAP_I2C|CAP_GPO|CAP_BACKLIGHT|CAP_HD66712 },
{ 0x05, "LCM-162", CAP_PARPORT|CAP_LCM162 },
{ 0xff, "Unknown", 0 }
};
@@ -623,32 +628,44 @@ static int drv_HD_PP_load (const char *section)
return -1;
}
- /* the LCM-162 is hardwired */
+ /* Soft-Wiring */
if (Capabilities & CAP_LCM162) {
- if ((SIGNAL_RS = drv_generic_parport_hardwire_ctrl ("RS", "SELECT"))==0xff) return -1;
- if ((SIGNAL_RW = drv_generic_parport_hardwire_ctrl ("RW", "INIT" ))==0xff) return -1;
- if ((SIGNAL_ENABLE = drv_generic_parport_hardwire_ctrl ("ENABLE", "AUTOFD"))==0xff) return -1;
- if ((SIGNAL_ENABLE2 = drv_generic_parport_hardwire_ctrl ("ENABLE2", "GND" ))==0xff) return -1;
- if ((SIGNAL_GPO = drv_generic_parport_hardwire_ctrl ("GPO", "GND" ))==0xff) return -1;
+ /* the LCM-162 is hardwired */
+ if ((SIGNAL_RS = drv_generic_parport_hardwire_ctrl ("RS", "SELECT")) == 0xff) return -1;
+ if ((SIGNAL_RW = drv_generic_parport_hardwire_ctrl ("RW", "INIT" )) == 0xff) return -1;
+ if ((SIGNAL_ENABLE = drv_generic_parport_hardwire_ctrl ("ENABLE", "AUTOFD")) == 0xff) return -1;
+ if ((SIGNAL_ENABLE2 = drv_generic_parport_hardwire_ctrl ("ENABLE2", "GND" )) == 0xff) return -1;
+ if ((SIGNAL_BACKLIGHT = drv_generic_parport_hardwire_ctrl ("BACKLIGHT", "GND" )) == 0xff) return -1;
+ if ((SIGNAL_GPO = drv_generic_parport_hardwire_ctrl ("GPO", "GND" )) == 0xff) return -1;
} else {
if (Bits==8) {
- if ((SIGNAL_RS = drv_generic_parport_wire_ctrl ("RS", "AUTOFD"))==0xff) return -1;
- if ((SIGNAL_RW = drv_generic_parport_wire_ctrl ("RW", "GND" ))==0xff) return -1;
- if ((SIGNAL_ENABLE = drv_generic_parport_wire_ctrl ("ENABLE", "STROBE"))==0xff) return -1;
- if ((SIGNAL_ENABLE2 = drv_generic_parport_wire_ctrl ("ENABLE2", "GND" ))==0xff) return -1;
- if ((SIGNAL_GPO = drv_generic_parport_wire_ctrl ("GPO", "GND" ))==0xff) return -1;
+ if ((SIGNAL_RS = drv_generic_parport_wire_ctrl ("RS", "AUTOFD")) == 0xff) return -1;
+ if ((SIGNAL_RW = drv_generic_parport_wire_ctrl ("RW", "GND" )) == 0xff) return -1;
+ if ((SIGNAL_ENABLE = drv_generic_parport_wire_ctrl ("ENABLE", "STROBE")) == 0xff) return -1;
+ if ((SIGNAL_ENABLE2 = drv_generic_parport_wire_ctrl ("ENABLE2", "GND" )) == 0xff) return -1;
} else {
- if ((SIGNAL_RS = drv_generic_parport_wire_data ("RS", "DB4"))==0xff) return -1;
- if ((SIGNAL_RW = drv_generic_parport_wire_data ("RW", "DB5"))==0xff) return -1;
- if ((SIGNAL_ENABLE = drv_generic_parport_wire_data ("ENABLE", "DB6"))==0xff) return -1;
- if ((SIGNAL_ENABLE2 = drv_generic_parport_wire_data ("ENABLE2", "GND"))==0xff) return -1;
- if ((SIGNAL_GPO = drv_generic_parport_wire_data ("GPO", "GND"))==0xff) return -1;
+ if ((SIGNAL_RS = drv_generic_parport_wire_data ("RS", "DB4")) == 0xff) return -1;
+ if ((SIGNAL_RW = drv_generic_parport_wire_data ("RW", "DB5")) == 0xff) return -1;
+ if ((SIGNAL_ENABLE = drv_generic_parport_wire_data ("ENABLE", "DB6")) == 0xff) return -1;
+ if ((SIGNAL_ENABLE2 = drv_generic_parport_wire_data ("ENABLE2", "GND")) == 0xff) return -1;
}
+ /* backlight and GPO are always control signals */
+ if ((SIGNAL_BACKLIGHT = drv_generic_parport_wire_ctrl ("BACKLIGHT", "GND" )) == 0xff) return -1;
+ if ((SIGNAL_GPO = drv_generic_parport_wire_ctrl ("GPO", "GND" )) == 0xff) return -1;
}
-
+
+ /* clear capabilities if corresponding signal is GND */
+ if (SIGNAL_BACKLIGHT == 0) {
+ Capabilities &= ~CAP_BACKLIGHT;
+ }
+ if (SIGNAL_GPO == 0) {
+ Capabilities &= ~CAP_GPO;
+ }
+
+
/* clear all signals */
- if (Bits==8) {
- drv_generic_parport_control (SIGNAL_RS|SIGNAL_RW|SIGNAL_ENABLE|SIGNAL_ENABLE2|SIGNAL_GPO, 0);
+ if (Bits == 8) {
+ drv_generic_parport_control (SIGNAL_RS|SIGNAL_RW|SIGNAL_ENABLE|SIGNAL_ENABLE2|SIGNAL_BACKLIGHT|SIGNAL_GPO, 0);
} else {
drv_generic_parport_data (0);
}
@@ -702,7 +719,7 @@ static void drv_HD_PP_stop (void)
{
/* clear all signals */
if (Bits==8) {
- drv_generic_parport_control (SIGNAL_RS|SIGNAL_RW|SIGNAL_ENABLE|SIGNAL_ENABLE2|SIGNAL_GPO, 0);
+ drv_generic_parport_control (SIGNAL_RS|SIGNAL_RW|SIGNAL_ENABLE|SIGNAL_ENABLE2|SIGNAL_BACKLIGHT|SIGNAL_GPO, 0);
} else {
drv_generic_parport_data (0);
}
@@ -918,6 +935,19 @@ static void drv_HD_defchar (const int ascii, const unsigned char *matrix)
}
+static int drv_HD_backlight (int backlight)
+{
+ if (!(Capabilities & CAP_BACKLIGHT)) return -1;
+
+ if (backlight < 0) backlight = 0;
+ if (backlight > 1) backlight = 1;
+
+ drv_generic_parport_control (SIGNAL_BACKLIGHT, backlight);
+
+ return backlight;
+}
+
+
static int drv_HD_brightness (int brightness)
{
char cmd;
@@ -1099,10 +1129,18 @@ static int drv_HD_start (const char *section, const int quiet)
drv_HD_clear(); /* clear *both* displays */
drv_HD_command (allControllers, 0x03, T_CLEAR); /* return home */
+ /* maybe set backlight */
+ if (Capabilities & CAP_BACKLIGHT) {
+ int backlight;
+ if (cfg_number(section, "Backlight", 0, 0, 1, &backlight) > 0) {
+ drv_HD_backlight(backlight);
+ }
+ }
+
/* maybe set brightness */
if (Capabilities & CAP_BRIGHTNESS) {
int brightness;
- if (cfg_number(section, "Brightness", 0, 0, 3, &brightness)>0) {
+ if (cfg_number(section, "Brightness", 0, 0, 3, &brightness) > 0) {
drv_HD_brightness(brightness);
}
}
@@ -1130,11 +1168,20 @@ static int drv_HD_start (const char *section, const int quiet)
/****************************************/
+static void plugin_backlight (RESULT *result, RESULT *arg1)
+{
+ double backlight;
+
+ backlight = drv_HD_backlight(R2N(arg1));
+ SetResult(&result, R_NUMBER, &backlight);
+}
+
+
static void plugin_brightness (RESULT *result, RESULT *arg1)
{
double brightness;
- brightness=drv_HD_brightness(R2N(arg1));
+ brightness = drv_HD_brightness(R2N(arg1));
SetResult(&result, R_NUMBER, &brightness);
}
@@ -1226,6 +1273,9 @@ int drv_HD_init (const char *section, const int quiet)
widget_register(&wc);
/* register plugins */
+ if (Capabilities & CAP_BACKLIGHT) {
+ AddFunction ("LCD::backlight", 1, plugin_backlight);
+ }
if (Capabilities & CAP_BRIGHTNESS) {
AddFunction ("LCD::brightness", 1, plugin_brightness);
}
diff --git a/lcd4linux.conf.sample b/lcd4linux.conf.sample
index 8929d75..4faff44 100644
--- a/lcd4linux.conf.sample
+++ b/lcd4linux.conf.sample
@@ -728,8 +728,8 @@ Layout testMySQL {
#Display 'CF632'
#Display 'CF633'
#Display 'Curses'
-#Display 'M50530-24x8'
-Display 'LCDTerm'
+Display 'M50530-24x8'
+#Display 'LCDTerm'
#Display 'CT20x4'
#Display 'T6963-240x64'
#Display 'XWindow'
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 15:32:57 +0000