-/* $Id: drv_HD44780.c,v 1.53 2005/06/01 11:17:54 pk_richman Exp $
+/* $Id: drv_HD44780.c,v 1.54 2005/06/09 17:41:47 reinelt Exp $
*
* new style driver for HD44780-based displays
*
*
*
* $Log: drv_HD44780.c,v $
+ * Revision 1.54 2005/06/09 17:41:47 reinelt
+ * M50530 fixes (many thanks to Szymon Bieganski)
+ *
* Revision 1.53 2005/06/01 11:17:54 pk_richman
* marked unused parameters
*
/****************************************/
/*
- DISCLAIMER!!!!
-
- The following code is WORK IN PROGRESS, since it basicly 'works for us...'
+ DISCLAIMER!!!!
+
+ The following code is WORK IN PROGRESS, since it basicly 'works for us...'
- (C) 2005 Paul Kamphuis & Luis Correia
+ (C) 2005 Paul Kamphuis & Luis Correia
- We have removed all of the delays from this code, as the I2C bus is slow enough...
- (maximum possible speed is 100KHz only)
+ We have removed all of the delays from this code, as the I2C bus is slow enough...
+ (maximum possible speed is 100KHz only)
- */
+ */
static void drv_HD_I2C_nibble(unsigned char controller, unsigned char nibble)
{
unsigned char enable;
- unsigned char command; /* this is actually the first data byte on the PCF8574 */
+ unsigned char command; /* this is actually the first data byte on the PCF8574 */
unsigned char data_block[2];
/* enable signal: 'controller' is a bitmask */
/* bit n .. send to controller #n */
enable |= SIGNAL_ENABLE4;
/*
- The new method Paul Kamphuis has concocted places the 3 needed writes to the I2C device
- as a single operation, using the 'i2c_smbus_write_block_data' function.
- These actual writes are performed by putting the nibble along with the 'EN' signal.
+ The new method Paul Kamphuis has concocted places the 3 needed writes to the I2C device
+ as a single operation, using the 'i2c_smbus_write_block_data' function.
+ These actual writes are performed by putting the nibble along with the 'EN' signal.
- command = first byte to be written, which contains the nibble (DB0..DB3)
- data [0] = second byte to be written, which contains the nibble plus the EN signal
- data [1] = third byte to be written, which contains the nibble (DB0..DB3)
+ command = first byte to be written, which contains the nibble (DB0..DB3)
+ data [0] = second byte to be written, which contains the nibble plus the EN signal
+ data [1] = third byte to be written, which contains the nibble (DB0..DB3)
- Then we write the block as a whole.
+ Then we write the block as a whole.
- The main advantage we see is that we do 2 less IOCTL's from our driver.
- */
+ The main advantage we see is that we do 2 less IOCTL's from our driver.
+ */
- command = nibble;
+ command = nibble;
data_block[0] = nibble | enable;
data_block[1] = nibble;
- drv_generic_i2c_command(command,data_block,2);
+ drv_generic_i2c_command(command, data_block, 2);
}
}
-static void drv_HD_I2C_command(const unsigned char controller, const unsigned char cmd, __attribute__ ((unused))const int delay)
+static void drv_HD_I2C_command(const unsigned char controller, const unsigned char cmd, __attribute__ ((unused))
+ const int delay)
{
/* send data with RS disabled */
drv_HD_I2C_nibble(controller, ((cmd >> 4) & 0x0f));
drv_HD_I2C_nibble(controller, ((cmd) & 0x0f));
}
-static void drv_HD_I2C_data(const unsigned char controller, const char *string, const int len, __attribute__ ((unused)) const int delay)
+static void drv_HD_I2C_data(const unsigned char controller, const char *string, const int len, __attribute__ ((unused))
+ const int delay)
{
int l = len;
info("%s: using model '%s'", Name, Models[Model].name);
} else {
error("%s: empty '%s.Model' entry from %s", Name, section, cfg_source());
- if (model)
- free(model);
+ free(model);
return -1;
}
free(model);
bus = cfg_get(section, "Bus", "parport");
if (bus == NULL && *bus == '\0') {
error("%s: empty '%s.Bus' entry from %s", Name, section, cfg_source());
- if (bus)
- free(bus);
+ free(bus);
return -1;
}
-# /* $Id: drv_M50530.c,v 1.18 2005/05/08 04:32:44 reinelt Exp $
- *
- * new style driver for M50530-based displays
- *
- * Copyright (C) 2003 Michael Reinelt <reinelt@eunet.at>
- * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
- *
- * This file is part of LCD4Linux.
- *
- * LCD4Linux is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * LCD4Linux is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * $Log: drv_M50530.c,v $
- * Revision 1.18 2005/05/08 04:32:44 reinelt
- * CodingStyle added and applied
- *
- * Revision 1.17 2005/05/05 08:36:12 reinelt
- * changed SELECT to SLCTIN
- *
- * Revision 1.16 2005/01/18 06:30:23 reinelt
- * added (C) to all copyright statements
- *
- * Revision 1.15 2005/01/06 16:54:53 reinelt
- * M50530 fixes
- *
- * Revision 1.14 2004/06/26 12:04:59 reinelt
- *
- * uh-oh... the last CVS log message messed up things a lot...
- *
- * Revision 1.13 2004/06/26 09:27:20 reinelt
- *
- * added '-W' to CFLAGS
- * changed all C++ comments to C ones
- * cleaned up a lot of signed/unsigned mistakes
- *
- * Revision 1.12 2004/06/20 10:09:54 reinelt
- *
- * 'const'ified the whole source
- *
- * Revision 1.11 2004/06/06 06:51:59 reinelt
- *
- * do not display end splash screen if quiet=1
- *
- * Revision 1.10 2004/06/05 06:41:39 reinelt
- *
- * chancged splash screen again
- *
- * Revision 1.9 2004/06/05 06:13:12 reinelt
- *
- * splash screen for all text-based display drivers
- *
- * Revision 1.8 2004/06/02 09:41:19 reinelt
- *
- * prepared support for startup splash screen
- *
- * Revision 1.7 2004/06/01 06:45:29 reinelt
- *
- * some Fixme's processed
- * documented some code
- *
- * Revision 1.6 2004/05/31 05:38:02 reinelt
- *
- * fixed possible bugs with user-defined chars (clear high bits)
- * thanks to Andy Baxter for debugging the MilfordInstruments driver!
- *
- * Revision 1.5 2004/05/29 15:53:28 reinelt
- *
- * M50530: reset parport signals on exit
- * plugin_ppp: ppp() has two parameters, not three
- * lcd4linux.conf.sample: diskstats() corrected
- *
- * Revision 1.4 2004/05/26 11:37:36 reinelt
- *
- * Curses driver ported.
- *
- * Revision 1.3 2004/03/19 09:17:46 reinelt
- *
- * removed the extra 'goto' function, row and col are additional parameters
- * of the write() function now.
- *
- * Revision 1.2 2004/02/15 21:43:43 reinelt
- * T6963 driver nearly finished
- * framework for graphic displays done
- * i2c_sensors patch from Xavier
- * some more old generation files removed
- *
- * Revision 1.1 2004/02/15 08:22:47 reinelt
- * ported USBLCD driver to NextGeneration
- * added drv_M50530.c (I forgot yesterday, sorry)
- * removed old drivers M50530.c and USBLCD.c
- *
- */
+/* $Id: drv_M50530.c,v 1.19 2005/06/09 17:41:47 reinelt Exp $
+ *
+ * new style driver for M50530-based displays
+ *
+ * Copyright (C) 2003 Michael Reinelt <reinelt@eunet.at>
+ * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * LCD4Linux is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * $Log: drv_M50530.c,v $
+ * Revision 1.19 2005/06/09 17:41:47 reinelt
+ * M50530 fixes (many thanks to Szymon Bieganski)
+ *
+ * Revision 1.18 2005/05/08 04:32:44 reinelt
+ * CodingStyle added and applied
+ *
+ * Revision 1.17 2005/05/05 08:36:12 reinelt
+ * changed SELECT to SLCTIN
+ *
+ * Revision 1.16 2005/01/18 06:30:23 reinelt
+ * added (C) to all copyright statements
+ *
+ * Revision 1.15 2005/01/06 16:54:53 reinelt
+ * M50530 fixes
+ *
+ * Revision 1.14 2004/06/26 12:04:59 reinelt
+ *
+ * uh-oh... the last CVS log message messed up things a lot...
+ *
+ * Revision 1.13 2004/06/26 09:27:20 reinelt
+ *
+ * added '-W' to CFLAGS
+ * changed all C++ comments to C ones
+ * cleaned up a lot of signed/unsigned mistakes
+ *
+ * Revision 1.12 2004/06/20 10:09:54 reinelt
+ *
+ * 'const'ified the whole source
+ *
+ * Revision 1.11 2004/06/06 06:51:59 reinelt
+ *
+ * do not display end splash screen if quiet=1
+ *
+ * Revision 1.10 2004/06/05 06:41:39 reinelt
+ *
+ * chancged splash screen again
+ *
+ * Revision 1.9 2004/06/05 06:13:12 reinelt
+ *
+ * splash screen for all text-based display drivers
+ *
+ * Revision 1.8 2004/06/02 09:41:19 reinelt
+ *
+ * prepared support for startup splash screen
+ *
+ * Revision 1.7 2004/06/01 06:45:29 reinelt
+ *
+ * some Fixme's processed
+ * documented some code
+ *
+ * Revision 1.6 2004/05/31 05:38:02 reinelt
+ *
+ * fixed possible bugs with user-defined chars (clear high bits)
+ * thanks to Andy Baxter for debugging the MilfordInstruments driver!
+ *
+ * Revision 1.5 2004/05/29 15:53:28 reinelt
+ *
+ * M50530: reset parport signals on exit
+ * plugin_ppp: ppp() has two parameters, not three
+ * lcd4linux.conf.sample: diskstats() corrected
+ *
+ * Revision 1.4 2004/05/26 11:37:36 reinelt
+ *
+ * Curses driver ported.
+ *
+ * Revision 1.3 2004/03/19 09:17:46 reinelt
+ *
+ * removed the extra 'goto' function, row and col are additional parameters
+ * of the write() function now.
+ *
+ * Revision 1.2 2004/02/15 21:43:43 reinelt
+ * T6963 driver nearly finished
+ * framework for graphic displays done
+ * i2c_sensors patch from Xavier
+ * some more old generation files removed
+ *
+ * Revision 1.1 2004/02/15 08:22:47 reinelt
+ * ported USBLCD driver to NextGeneration
+ * added drv_M50530.c (I forgot yesterday, sorry)
+ * removed old drivers M50530.c and USBLCD.c
+ *
+ */
/*
*
static unsigned char SIGNAL_IOC2;
static unsigned char SIGNAL_GPO;
+static int FONT5X11;
+static int DDRAM;
+static int DUTY;
+
/* Fixme: GPO's not yet implemented */
static int GPOS;
/* static int GPO=0; */
unsigned int cmd;
unsigned int pos;
- pos = row * 48 + col;
- if (row > 3)
- pos -= 168;
+ if (row < 4) {
+ pos = row * (DDRAM >> DUTY) + col;
+ } else {
+ pos = (row - 4) * (DDRAM >> DUTY) + (DDRAM >> DUTY) / 2 + col;
+ }
+
drv_M5_command(0x300 | pos, 20);
while (l--) {
{
int i;
- drv_M5_command(0x300 + 192 + 8 * (ascii - CHAR0), 20);
+ drv_M5_command(0x300 + DDRAM + 8 * (ascii - CHAR0), 20);
- /* Fixme: looks like the M50530 cannot control the bottom line */
- /* therefore we have only 7 bytes here */
- for (i = 0; i < 7; i++) {
+ for (i = 0; i < YRES; i++) {
drv_M5_command(0x200 | (matrix[i] & 0x3f), 20);
}
}
static int drv_M5_start(const char *section, const int quiet)
{
- char *model, *s;
- int rows = -1, cols = -1, gpos = -1;
+ char *s;
+ int n;
+ int rows = -1, cols = -1;
+ unsigned int SF;
- model = cfg_get(section, "Model", "generic");
- if (model != NULL && *model != '\0') {
+ s = cfg_get(section, "Model", "generic");
+ if (s != NULL && *s != '\0') {
int i;
for (i = 0; Models[i].type != 0xff; i++) {
- if (strcasecmp(Models[i].name, model) == 0)
+ if (strcasecmp(Models[i].name, s) == 0)
break;
}
+ free(s);
if (Models[i].type == 0xff) {
- error("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source());
+ error("%s: %s.Model '%s' is unknown from %s", Name, section, s, cfg_source());
return -1;
}
Model = i;
info("%s: using model '%s'", Name, Models[Model].name);
} else {
error("%s: empty '%s.Model' entry from %s", Name, section, cfg_source());
+ free(s);
return -1;
}
s = cfg_get(section, "Size", NULL);
if (s == NULL || *s == '\0') {
error("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
+ free(s);
return -1;
}
if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) {
- error("%s: bad size '%s'", Name, s);
+ error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
+ free(s);
return -1;
}
+ free(s);
+ DROWS = rows;
+ DCOLS = cols;
- if (cfg_number(section, "GPOs", 0, 0, 8, &gpos) < 0)
+ s = cfg_get(section, "Font", "5x7");
+ if (s == NULL && *s == '\0') {
+ error("%s: empty '%s.Font' entry from %s", Name, section, cfg_source());
+ free(s);
return -1;
- info("%s: controlling %d GPO's", Name, gpos);
+ }
+ if (strcasecmp(s, "5x7") == 0) {
+ XRES = 5;
+ YRES = 7;
+ FONT5X11 = 0;
+ } else if (strcasecmp(s, "5x11") == 0) {
+ XRES = 5;
+ YRES = 11;
+ FONT5X11 = 1;
+ } else {
+ error("%s: bad '%s.Font' entry '%s' from %s", Name, section, s, cfg_source());
+ error("%s: should be '5x7' or '5x11'", Name);
+ free(s);
+ return -1;
+ }
+ free(s);
+
+
+ if (DCOLS * DROWS > 256) {
+ error("%s: %s.Size '%dx%d' is too big, would require %d bytes", Name, section, DCOLS, DROWS, DCOLS * DROWS, cfg_source());
+ return -1;
+ } else if (DCOLS * DROWS > 224) {
+ DDRAM = 256;
+ CHARS = 0;
+ } else if (DCOLS * DROWS > 192) {
+ DDRAM = 224;
+ CHARS = FONT5X11 ? 2 : 4;
+ } else if (DCOLS * DROWS > 160) {
+ DDRAM = 192;
+ CHARS = FONT5X11 ? 4 : 8;
+ } else {
+ DDRAM = 160;
+ CHARS = FONT5X11 ? 6 : 12;
+ }
+ info("%s: using %d words DDRAM / %d words CGRAM (%d user chars)", Name, DDRAM, 256 - DDRAM, CHARS);
+
+ if (cfg_number(section, "DUTY", 2, 0, 2, &DUTY) < 0)
+ return -1;
+ info("%s: using duty %d: 1/%d, %d lines x %d words", Name, DUTY, (XRES + 1) << DUTY, 1 << DUTY, DDRAM >> DUTY);
- DROWS = rows;
- DCOLS = cols;
- GPOS = gpos;
+
+ if (cfg_number(section, "GPOs", 0, 0, 8, &n) < 0)
+ return -1;
+ GPOS = n;
+ info("%s: controlling %d GPO's", Name, GPOS);
if (drv_generic_parport_open(section, Name) != 0) {
error("%s: could not initialize parallel port!", Name);
/* clear all signals */
drv_generic_parport_control(SIGNAL_EX | SIGNAL_IOC1 | SIGNAL_IOC2 | SIGNAL_GPO, 0);
- /* for any mysterious reason, this delay is necessary... */
+ /* for some mysterious reason, this delay is necessary... */
udelay(2000);
/* set direction: write */
drv_generic_parport_direction(0);
- drv_M5_command(0x00FA, 20); /* set function mode */
- drv_M5_command(0x0020, 20); /* set display mode */
- drv_M5_command(0x0050, 20); /* set entry mode */
- drv_M5_command(0x0030, 20); /* set display mode */
+
+ /* set function (SF) mode:
+ * Bit 0 : RAM 0
+ * Bit 1 : RAM 1
+ * Bit 2 : DUTY 0
+ * Bit 3 : DUTY 1
+ * Bit 4 : FONT: 0 = 5x12, 1 = 5x8
+ * Bit 5 : I/O: 0 = 4-bit, 1 = 8-bit
+ * Bit 6 : 1
+ * Bit 7 : 1
+ *
+ * RAM layout:
+ * 00: 256 words DDRAM, 0 words CGRAM
+ * 01: 224 words DDRAM, 32 words CGRAM
+ * 10: 192 words DDRAM, 64 words CGRAM
+ * 11: 160 words DDRAM, 96 words CGRAM
+ *
+ * Duty:
+ * 00: 1/8 (1/12 for 5x11), 1 line
+ * 00: 1/16 (1/24 for 5x11), 2 lines
+ * 00: 1/32 (1/48 for 5x11), 4 lines
+ * 11: undefined
+ */
+
+ /* 11100000 : SF, 8-bit mode */
+ SF = 0xE0;
+
+ /* RAM layout */
+ switch (DDRAM) {
+ case 160:
+ SF |= 0x03;
+ break;
+ case 192:
+ SF |= 0x02;
+ break;
+ case 224:
+ SF |= 0x01;
+ break;
+ case 256:
+ SF |= 0x00;
+ break;
+ }
+
+ /* Duty */
+ SF |= (DUTY << 2);
+
+ /* Font */
+ SF |= (!FONT5X11) << 4;
+
+
+ debug("SET FUNCTION MODE 0x%02x", SF);
+ drv_M5_command(SF, 20);
+
+
+ /* set display (SD) mode:
+ * Bit 0 : 1 = turn on character blinking
+ * Bit 0 : 1 = turn on cursor blinking
+ * Bit 0 : 1 = turn on underline display
+ * Bit 0 : 1 = turn on cursor
+ * Bit 0 : 1 = turn on display
+ * Bit 0 : 1
+ * Bit 0 : 0
+ * Bit 0 : 0
+ */
+
+ /* SD: 0x20 = 00100000 */
+ /* SD: turn off display */
+ drv_M5_command(0x0020, 20);
+
+
+ /* set entry (SE) mode:
+ * Bit 0 : 1 = inc/dec cursor address after Read
+ * Bit 1 : 1 = inc/dec cursor address after Write
+ * Bit 2 : 0 = inc, 1 = dec
+ * Bit 3 : 1 = inc/dec display start addr after Read
+ * Bit 4 : 1 = inc/dec display start addr after Write
+ * Bit 5 : 0 = inc, 1 = dec
+ * Bit 6 : 1
+ * Bit 7 : 0
+ *
+ */
+
+ /* SE: 0x50 = 01010000 */
+ /* SE: increment display start after Write */
+ drv_M5_command(0x0050, 20);
+
+
+ /* SD: 0x30 = 00110000 */
+ /* SD: turn on display */
+ drv_M5_command(0x0030, 20);
+
drv_M5_clear();
int ret;
/* display preferences */
- XRES = 5; /* pixel width of one char */
- YRES = 8; /* pixel height of one char */
- CHARS = 8; /* number of user-defineable characters */
+ XRES = -1; /* pixel width of one char */
+ YRES = -1; /* pixel height of one char */
+ CHARS = 0; /* number of user-defineable characters */
CHAR0 = 248; /* ASCII of first user-defineable char */
GOTO_COST = 1; /* number of bytes a goto command requires */
projects / lcd4linux.git / commitdiff