mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
[lcd4linux @ 2004-02-01 08:05:12 by reinelt]
Crystalfontz 633 extensions (CRC checking and stuff) Models table for HD44780 Noritake VFD BVrightness patch from Bill Paxton git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@349 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
reinelt
+25
-14
@@ -1,4 +1,4 @@
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/* $Id: drv_Crystalfontz.c,v 1.7 2004/01/30 20:57:56 reinelt Exp $
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/* $Id: drv_Crystalfontz.c,v 1.8 2004/02/01 08:05:12 reinelt Exp $
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*
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* new style driver for Crystalfontz display modules
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*
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@@ -23,6 +23,11 @@
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*
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*
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* $Log: drv_Crystalfontz.c,v $
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* Revision 1.8 2004/02/01 08:05:12 reinelt
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* Crystalfontz 633 extensions (CRC checking and stuff)
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* Models table for HD44780
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* Noritake VFD BVrightness patch from Bill Paxton
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*
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* Revision 1.7 2004/01/30 20:57:56 reinelt
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* HD44780 patch from Martin Hejl
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* dmalloc integrated
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@@ -116,23 +121,23 @@ static MODEL Models[] = {
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// x^0 + x^5 + x^12
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#define CRCPOLY 0x8408
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static unsigned short CRC=0xffff;
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static unsigned short CRC16 (unsigned short crc, unsigned char *p, size_t len)
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static unsigned short CRC (unsigned char *p, size_t len, unsigned short seed)
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{
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int i;
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while (len--) {
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crc ^= *p++;
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seed ^= *p++;
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for (i = 0; i < 8; i++)
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crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY : 0);
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seed = (seed >> 1) ^ ((seed & 1) ? CRCPOLY : 0);
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}
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return ~crc;
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return ~seed;
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}
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static void drv_CF_write_crc (char *string, int len)
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{
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unsigned char buffer[16+2];
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unsigned short crc;
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if (len>sizeof(buffer)-2) {
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error ("%s: internal error: packet length %d exceeds buffer size %d", Name, len, sizeof(buffer)-2);
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@@ -140,9 +145,12 @@ static void drv_CF_write_crc (char *string, int len)
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}
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strcpy (buffer, string);
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CRC = CRC16(CRC, buffer, len);
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buffer[len] = (CRC >> 8);
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buffer[len+1] = CRC & 0xff;
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crc = CRC(buffer, len, 0xffff);
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buffer[len] = crc & 0xff;
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buffer[len+1] = (crc >> 8);
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drv_generic_serial_write (buffer, len+2);
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}
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@@ -219,16 +227,19 @@ static int drv_CF_start (char *section)
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drv_CF_write ("\1", 2);
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usleep(250*1000);
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#if 1
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{
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int len=drv_generic_serial_read (buffer, 16);
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debug ("Michi: len=<%d> buffer=<%s>", len, buffer);
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while (1) {
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int len;
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// memset(buffer, 0, sizeof(buffer));
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len=drv_generic_serial_read (buffer, 16);
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debug ("Michi1: len=<%d> buffer=<%d> <%d> <%d> <%d> <%s>", len, buffer[0], buffer[1], buffer[2], buffer[3], buffer);
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usleep(250*1000);
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}
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#else
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if (drv_generic_serial_read (buffer, 16)==16) {
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info ("%s: display reports serial number 0x%x", Name, *(short*)buffer);
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}
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#endif
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// initialize global variables
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DROWS = Models[Model].rows;
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DCOLS = Models[Model].cols;
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+150
-53
@@ -1,4 +1,4 @@
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/* $Id: drv_HD44780.c,v 1.7 2004/01/30 07:12:35 reinelt Exp $
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/* $Id: drv_HD44780.c,v 1.8 2004/02/01 08:05:12 reinelt Exp $
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*
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* new style driver for HD44780-based displays
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*
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@@ -29,6 +29,11 @@
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*
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*
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* $Log: drv_HD44780.c,v $
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* Revision 1.8 2004/02/01 08:05:12 reinelt
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* Crystalfontz 633 extensions (CRC checking and stuff)
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* Models table for HD44780
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* Noritake VFD BVrightness patch from Bill Paxton
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*
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* Revision 1.7 2004/01/30 07:12:35 reinelt
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* HD44780 busy-flag support from Martin Hejl
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* loadavg() uClibc replacement from Martin Heyl
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@@ -93,6 +98,8 @@
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static char Name[]="HD44780";
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static int Model;
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static int Capabilities;
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/* low level communication timings [nanoseconds]
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* as these values differ from spec to spec,
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@@ -131,7 +138,7 @@ static unsigned char SIGNAL_GPO;
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/* maximum time to wait for the busy-flag (in usec) */
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#define MAX_BUSYFLAG_WAIT 100000
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static int use_busy_flag = 0;
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static int UseBusy = 0;
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// Fixme
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@@ -139,6 +146,23 @@ static int GPOS;
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// static int GPO=0;
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typedef struct {
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int type;
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char *name;
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int capabilities;
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} MODEL;
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#define CAP_BRIGHTNESS (1<<0)
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#define CAP_BUSY4BIT (1<<1)
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static MODEL Models[] = {
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{ 0x01, "generic", 0 },
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{ 0x02, "Noritake", CAP_BRIGHTNESS },
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{ 0x03, "Soekris", CAP_BUSY4BIT },
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{ 0xff, "Unknown", 0 }
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};
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// ****************************************
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// *** hardware dependant functions ***
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// ****************************************
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@@ -321,7 +345,7 @@ static void drv_HD_command (unsigned char controller, unsigned char cmd, int del
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}
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// wait for command completion
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if (!use_busy_flag) udelay(delay);
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if (!UseBusy) udelay(delay);
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}
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@@ -333,7 +357,7 @@ static void drv_HD_data (unsigned char controller, char *string, int len, int de
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// sanity check
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if (len<=0) return;
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if (use_busy_flag) wait_for_busy_flag(controller);
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if (UseBusy) wait_for_busy_flag(controller);
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if (Bits==8) {
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@@ -345,7 +369,7 @@ static void drv_HD_data (unsigned char controller, char *string, int len, int de
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if (controller&0x01) enable|=SIGNAL_ENABLE;
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if (controller&0x02) enable|=SIGNAL_ENABLE2;
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if (!use_busy_flag) {
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if (!UseBusy) {
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// clear RW, set RS
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drv_generic_parport_control (SIGNAL_RW | SIGNAL_RS, SIGNAL_RS);
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// Address set-up time
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@@ -354,7 +378,7 @@ static void drv_HD_data (unsigned char controller, char *string, int len, int de
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while (len--) {
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if (use_busy_flag) {
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if (UseBusy) {
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wait_for_busy_flag(controller);
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// clear RW, set RS
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drv_generic_parport_control (SIGNAL_RW | SIGNAL_RS, SIGNAL_RS);
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@@ -369,19 +393,19 @@ static void drv_HD_data (unsigned char controller, char *string, int len, int de
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drv_generic_parport_toggle (enable, 1, T_PW);
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// wait for command completion
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if (!use_busy_flag) udelay(delay);
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if (!UseBusy) udelay(delay);
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}
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} else { // 4 bit mode
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while (len--) {
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if (use_busy_flag) wait_for_busy_flag(controller);
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if (UseBusy) wait_for_busy_flag(controller);
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// send data with RS enabled
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drv_HD_byte (controller, *(string++), SIGNAL_RS);
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// wait for command completion
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if (!use_busy_flag) udelay(delay);
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if (!UseBusy) udelay(delay);
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}
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}
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}
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@@ -416,11 +440,81 @@ static void drv_HD_goto (int row, int col)
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}
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static void drv_HD_write (char *string, int len)
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{
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drv_HD_data (currController, string, len, T_EXEC);
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}
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static void drv_HD_defchar (int ascii, char *buffer)
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{
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// define chars on *both* controllers!
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drv_HD_command (allControllers, 0x40|8*ascii, T_EXEC);
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drv_HD_data (allControllers, buffer, 8, T_WRCG);
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}
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static int drv_HD_brightness (int brightness)
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{
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char cmd;
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if (!(Capabilities & CAP_BRIGHTNESS)) return -1;
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if (brightness<0) brightness=0;
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if (brightness>3) brightness=3;
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cmd='0'+brightness;
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drv_HD_command (allControllers, 0x38, T_EXEC); // enable function
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drv_HD_data (allControllers, &cmd, 1, T_WRCG); // set brightness
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return brightness;
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}
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// Fixme
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#if 0
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static void drv_HD_setGPO (int bits)
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{
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if (Lcd.gpos>0) {
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// put data on DB1..DB8
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drv_generic_parport_data (bits);
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// 74HCT573 set-up time
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ndelay(20);
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// send data
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// 74HCT573 enable pulse width = 24ns
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drv_generic_parport_toggle (SIGNAL_GPO, 1, 230);
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}
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}
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#endif
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static int drv_HD_start (char *section)
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{
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char *model, *s;
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int rows=-1, cols=-1, gpos=-1;
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char *s;
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model=cfg_get(section, "Model", NULL);
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if (model!=NULL && *model!='\0') {
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int i;
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for (i=0; Models[i].type!=0xff; i++) {
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if (strcasecmp(Models[i].name, model)==0) break;
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}
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if (Models[i].type==0xff) {
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error ("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source());
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return -1;
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}
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Model=i;
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Capabilities=Models[Model].capabilities;
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info ("%s: using model '%s'", Name, Models[Model].name);
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} else {
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error ("%s: no '%s.Model' entry from %s", Name, section, cfg_source());
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return -1;
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}
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s=cfg_get(section, "Size", NULL);
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if (s==NULL || *s=='\0') {
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error ("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
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@@ -499,59 +593,42 @@ static int drv_HD_start (char *section)
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drv_HD_command (allControllers, 0x08, T_EXEC); // Display off, cursor off, blink off
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drv_HD_command (allControllers, 0x0c, T_CLEAR); // Display on, cursor off, blink off, wait 1.64 ms
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drv_HD_command (allControllers, 0x06, T_EXEC); // curser moves to right, no shift
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// maybe use busy-flag from now on
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// (we can't use the busy flag during the init sequence)
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cfg_number(section, "UseBusy", 0, 0, 1, &UseBusy);
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// make sure we don't use the busy flag with RW wired to GND
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if (UseBusy && SIGNAL_RW) {
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error("%s: Busyflag is to be used, but RW is wired to GND", Name);
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UseBusy=0;
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}
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// Save it in a local variable, until init is complete (for init, we can't use the busy flag)
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if (cfg_number(section, "UseBusy", 0, 0, 1, &use_busy_flag)<0) return -1;
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// Make sure we don't use the busy flag, if it's set to GND
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if (SIGNAL_RW == 0 && use_busy_flag != 0 ) {
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debug("HD44780: Busyflag is to be used, but wiring set RW to GND. Disabling busy-flag");
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use_busy_flag=0;
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// make shure the display supports busy-flag checking in 4-Bit-Mode
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// at the moment this is inly possible with martin Hejl's gpio driver,
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// which allows to use 4 bits as input and 4 bits as output
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if (UseBusy && Bits==4 && !(Capabilities&CAP_BUSY4BIT)) {
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error("%s: Model '%s' does not support busy-flag checking in 4-bit-mode", Name, Models[Model].name);
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UseBusy=0;
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}
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info("HD44780: %susing Busyflag", use_busy_flag?"":"not ");
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info("%s: %susing busy-flag checking", Name, UseBusy?"":"not ");
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drv_HD_command (allControllers, 0x01, T_CLEAR); // clear *both* displays
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drv_HD_command (allControllers, 0x03, T_CLEAR); // return home
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// maybe set brightness
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if (Capabilities & CAP_BRIGHTNESS) {
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int brightness;
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if (cfg_number(section, "Brightness", 0, 0, 3, &brightness)==0) {
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drv_HD_brightness(brightness);
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}
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}
|
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|
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|
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return 0;
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}
|
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|
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static void drv_HD_write (char *string, int len)
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{
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drv_HD_data (currController, string, len, T_EXEC);
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}
|
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|
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|
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static void drv_HD_defchar (int ascii, char *buffer)
|
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{
|
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// define chars on *both* controllers!
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drv_HD_command (allControllers, 0x40|8*ascii, T_EXEC);
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drv_HD_data (allControllers, buffer, 8, T_WRCG);
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}
|
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|
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|
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// Fixme
|
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#if 0
|
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static void drv_HD_setGPO (int bits)
|
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{
|
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if (Lcd.gpos>0) {
|
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|
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// put data on DB1..DB8
|
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drv_generic_parport_data (bits);
|
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|
||||
// 74HCT573 set-up time
|
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ndelay(20);
|
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|
||||
// send data
|
||||
// 74HCT573 enable pulse width = 24ns
|
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drv_generic_parport_toggle (SIGNAL_GPO, 1, 230);
|
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}
|
||||
}
|
||||
#endif
|
||||
|
||||
// ****************************************
|
||||
// *** plugins ***
|
||||
// ****************************************
|
||||
@@ -575,7 +652,11 @@ static void drv_HD_setGPO (int bits)
|
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// list models
|
||||
int drv_HD_list (void)
|
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{
|
||||
printf ("any");
|
||||
int i;
|
||||
|
||||
for (i=0; Models[i].type!=0xff; i++) {
|
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printf ("%s ", Models[i].name);
|
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}
|
||||
return 0;
|
||||
}
|
||||
|
||||
@@ -665,3 +746,19 @@ DRIVER drv_HD44780 = {
|
||||
quit: drv_HD_quit,
|
||||
};
|
||||
|
||||
|
||||
#if 0
|
||||
+
|
||||
+// Change Noritake CU series VFD brightness level
|
||||
+ char tmpbuffer[2];
|
||||
+ int cu_vfd_brightness;
|
||||
+ if (cfg_number("CU_VFD_Brightness", 0, 0, 3, &cu_vfd_brightness)<0) return -1;
|
||||
+ if (cu_vfd_brightness) {
|
||||
+ snprintf (tmpbuffer, 2, "\%o", cu_vfd_brightness);
|
||||
+ HD_command (0x03, 0x38, T_EXEC); // enable function
|
||||
+ HD_write (0x03, tmpbuffer, 1, T_WRCG); // set brightness
|
||||
+ info ("HD44780: Noritake CU VFD detected. Brightness = %d (0-3)", cu_vfd_brightness);
|
||||
+ info (" Settings: 0=100\%, 1=75\%, 2=50\%, 3=25\%");
|
||||
+ }
|
||||
|
||||
#endif
|
||||
|
||||
+14
-3
@@ -1,4 +1,4 @@
|
||||
/* $Id: drv_generic_serial.c,v 1.3 2004/01/29 04:40:02 reinelt Exp $
|
||||
/* $Id: drv_generic_serial.c,v 1.4 2004/02/01 08:05:12 reinelt Exp $
|
||||
*
|
||||
* generic driver helper for serial and usbserial displays
|
||||
*
|
||||
@@ -23,6 +23,11 @@
|
||||
*
|
||||
*
|
||||
* $Log: drv_generic_serial.c,v $
|
||||
* Revision 1.4 2004/02/01 08:05:12 reinelt
|
||||
* Crystalfontz 633 extensions (CRC checking and stuff)
|
||||
* Models table for HD44780
|
||||
* Noritake VFD BVrightness patch from Bill Paxton
|
||||
*
|
||||
* Revision 1.3 2004/01/29 04:40:02 reinelt
|
||||
* every .c file includes "config.h" now
|
||||
*
|
||||
@@ -278,13 +283,19 @@ int drv_generic_serial_open (char *section, char *driver)
|
||||
}
|
||||
|
||||
|
||||
int drv_generic_serial_poll (char *string, int len)
|
||||
{
|
||||
if (Device==-1) return -1;
|
||||
return read (Device, string, len);
|
||||
}
|
||||
|
||||
|
||||
int drv_generic_serial_read (char *string, int len)
|
||||
{
|
||||
int run, ret;
|
||||
|
||||
if (Device==-1) return -1;
|
||||
for (run=0; run<10; run++) {
|
||||
ret=read (Device, string, len);
|
||||
ret=drv_generic_serial_poll(string, len);
|
||||
if (ret>=0 || errno!=EAGAIN) break;
|
||||
debug ("read(): EAGAIN");
|
||||
usleep(1000);
|
||||
|
||||
+11
-5
@@ -1,4 +1,4 @@
|
||||
/* $Id: drv_generic_serial.h,v 1.1 2004/01/20 14:26:09 reinelt Exp $
|
||||
/* $Id: drv_generic_serial.h,v 1.2 2004/02/01 08:05:12 reinelt Exp $
|
||||
*
|
||||
* generic driver helper for serial and usbserial displays
|
||||
*
|
||||
@@ -23,6 +23,11 @@
|
||||
*
|
||||
*
|
||||
* $Log: drv_generic_serial.h,v $
|
||||
* Revision 1.2 2004/02/01 08:05:12 reinelt
|
||||
* Crystalfontz 633 extensions (CRC checking and stuff)
|
||||
* Models table for HD44780
|
||||
* Noritake VFD BVrightness patch from Bill Paxton
|
||||
*
|
||||
* Revision 1.1 2004/01/20 14:26:09 reinelt
|
||||
* moved drv_generic to drv_generic_serial
|
||||
*
|
||||
@@ -47,9 +52,10 @@
|
||||
#ifndef _DRV_GENERIC_SERIALH_
|
||||
#define _DRV_GENERIC_SERIAL_H_
|
||||
|
||||
int drv_generic_serial_open (char *section, char *driver);
|
||||
int drv_generic_serial_read (char *string, int len);
|
||||
void drv_generic_serial_write (char *string, int len);
|
||||
int drv_generic_serial_close (void);
|
||||
int drv_generic_serial_open (char *section, char *driver);
|
||||
int drv_generic_serial_poll (char *string, int len);
|
||||
int drv_generic_serial_read (char *string, int len);
|
||||
void drv_generic_serial_write (char *string, int len);
|
||||
int drv_generic_serial_close (void);
|
||||
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user