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hd44780 driver: new ConnectionType ftdi (Thomas Jarosch)

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This commit is contained in:
marschap
2007-11-03 17:39:05 +00:00
parent 6af05c509a
commit 46347e8c94
10 changed files with 360 additions and 4 deletions
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server/drivers/Makefile.am
+3 -3
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@@ -23,7 +23,7 @@ EXTRA_PROGRAMS = bayrad CFontz CFontz633 CFontzPacket curses CwLnx ea65 EyeboxOn
noinst_LIBRARIES = libLCD.a libbignum.a
IOWarrior_CFLAGS = @LIBUSB_CFLAGS@ $(AM_CFLAGS)
hd44780_CFLAGS = @LIBUSB_CFLAGS@ $(AM_CFLAGS)
hd44780_CFLAGS = @LIBUSB_CFLAGS@ @LIBFTDI_CFLAGS@ $(AM_CFLAGS)
g15_CFLAGS = @LIBUSB_CFLAGS@ $(AM_CFLAGS)
lis_CFLAGS = @LIBFTDI_CFLAGS@ $(AM_CFLAGS)
picolcd_CFLAGS = @LIBUSB_CFLAGS@ $(AM_CFLAGS)
@@ -37,7 +37,7 @@ curses_LDADD = @LIBCURSES@
CwLnx_LDADD = libLCD.a libbignum.a
g15_LDADD = libLCD.a @LIBG15@
glcdlib_LDADD = libLCD.a @LIBGLCD@
hd44780_LDADD = libLCD.a @HD44780_DRIVERS@ @LIBUSB_LIBS@ libbignum.a
hd44780_LDADD = libLCD.a @HD44780_DRIVERS@ @LIBUSB_LIBS@ @LIBFTDI_LIBS@ libbignum.a
hd44780_DEPENDENCIES = @HD44780_DRIVERS@
icp_a106_LDADD = libLCD.a
imon_LDADD = libLCD.a
@@ -77,7 +77,7 @@ g15_SOURCES = lcd.h lcd_lib.h g15.h g15-num.c g15.c report.h
glcdlib_SOURCES = lcd.h lcd_lib.h glcdlib.h glcdlib.c report.h
glk_SOURCES = lcd.h glk.c glk.h glkproto.c glkproto.h report.h
hd44780_SOURCES = lcd.h lcd_lib.h hd44780.h hd44780.c hd44780-drivers.h hd44780-low.h hd44780-charmap.h report.h adv_bignum.h
EXTRA_hd44780_SOURCES = hd44780-4bit.c hd44780-4bit.h hd44780-ext8bit.c hd44780-ext8bit.h lcd_sem.c lcd_sem.h hd44780-serialLpt.c hd44780-serialLpt.h hd44780-serial.c hd44780-serial.h hd44780-winamp.c hd44780-winamp.h hd44780-bwct-usb.c hd44780-bwct-usb.h hd44780-lcd2usb.c hd44780-lcd2usb.h hd44780-lis2.c hd44780-lis2.h hd44780-i2c.c hd44780-i2c.h port.h lpt-port.h timing.h
EXTRA_hd44780_SOURCES = hd44780-4bit.c hd44780-4bit.h hd44780-ext8bit.c hd44780-ext8bit.h lcd_sem.c lcd_sem.h hd44780-serialLpt.c hd44780-serialLpt.h hd44780-serial.c hd44780-serial.h hd44780-winamp.c hd44780-winamp.h hd44780-bwct-usb.c hd44780-bwct-usb.h hd44780-lcd2usb.c hd44780-lcd2usb.h hd44780-lis2.c hd44780-lis2.h hd44780-i2c.c hd44780-i2c.h hd44780-ftdi.c hd44780-ftdi.h port.h lpt-port.h timing.h
icp_a106_SOURCES = lcd.h lcd_lib.h icp_a106.c icp_a106.h report.h
imon_SOURCES = lcd.h lcd_lib.h imon.h imon.c report.h
server/drivers/hd44780-drivers.h
+6
View File
@@ -23,6 +23,9 @@
# include "hd44780-bwct-usb.h"
# include "hd44780-lcd2usb.h"
#endif
#ifdef HAVE_LIBFTDI
# include "hd44780-ftdi.h"
#endif
#ifdef HAVE_I2C
# include "hd44780-i2c.h"
#endif
@@ -55,6 +58,9 @@ static const ConnectionMapping connectionMapping[] = {
{ "bwctusb", HD44780_CT_BWCTUSB, IF_TYPE_USB, hd_init_bwct_usb },
{ "lcd2usb", HD44780_CT_I2C, IF_TYPE_USB, hd_init_lcd2usb },
#endif
#ifdef HAVE_LIBFTDI
{ "ftdi", HD44780_CT_FTDI, IF_TYPE_USB, hd_init_ftdi },
#endif
#ifdef HAVE_I2C
{ "i2c", HD44780_CT_I2C, IF_TYPE_I2C, hd_init_i2c },
#endif
server/drivers/hd44780-ftdi.c
+158
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@@ -0,0 +1,158 @@
/*
* FTDI/USB driver module for Hitachi HD44780 based LCD displays
* connected to a FT2232C/D chip in 8 bit mode.
*
* Copyright (c) 2007, Intra2net AG <opensource@intra2net.com>
*
* This file is released under the GNU General Public License. Refer to the
* COPYING file distributed with this package.
*
*/
#include "hd44780-ftdi.h"
#include "report.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <usb.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
// initialize the driver
int
hd_init_ftdi(Driver *drvthis)
{
int vendor_id, product_id;
int f;
PrivateData *p = (PrivateData*) drvthis->private_data;
p->hd44780_functions->senddata = ftdi_HD44780_senddata;
p->hd44780_functions->backlight = ftdi_HD44780_backlight;
p->hd44780_functions->scankeypad = ftdi_HD44780_scankeypad;
p->hd44780_functions->close = ftdi_HD44780_close;
// Load config
vendor_id = drvthis->config_get_int(drvthis->name, "VendorID", 0, 0x0403);
product_id = drvthis->config_get_int(drvthis->name, "ProductID", 0, 0x6001);
p->ftdi_line_RS = drvthis->config_get_int(drvthis->name, "ftdi_line_RS", 0, 0x01);
p->ftdi_line_RW = drvthis->config_get_int(drvthis->name, "ftdi_line_RW", 0, 0x02);
p->ftdi_line_E = drvthis->config_get_int(drvthis->name, "ftdi_line_E", 0, 0x04);
p->ftdi_line_backlight = drvthis->config_get_int(drvthis->name, "ftdi_line_backlight", 0, 0x08);
// Init 1. channel: data
ftdi_init(&p->ftdic);
ftdi_set_interface(&p->ftdic, INTERFACE_A);
f = ftdi_usb_open(&p->ftdic, vendor_id, product_id);
if(f < 0 && f != -5) {
report(RPT_ERR, "unable to open ftdi device: %d (%s)", f, ftdi_get_error_string(&p->ftdic));
return -1;
}
debug(RPT_DEBUG, "ftdi open succeeded(channel 1): %d", f);
debug(RPT_DEBUG, "enabling bitbang mode(channel 1)\n");
ftdi_enable_bitbang(&p->ftdic, 0xFF);
// Init 2. channel: control
ftdi_init(&p->ftdic2);
ftdi_set_interface(&p->ftdic2, INTERFACE_B);
f = ftdi_usb_open(&p->ftdic2, vendor_id, product_id);
if(f < 0 && f != -5) {
report(RPT_ERR, "unable to open second ftdi device: %d (%s)", f, ftdi_get_error_string(&p->ftdic2));
return -2;
}
debug(RPT_DEBUG, "ftdi open succeeded(channel 2): %d", f);
debug(RPT_DEBUG, "enabling bitbang mode (channel 2)");
ftdi_enable_bitbang(&p->ftdic2, 0xFF);
// FTDI bug: Sometimes first write gets lost on kernel 2.6, needs investigation.
ftdi_HD44780_senddata (p, 0, RS_INSTR, FUNCSET | IF_8BIT);
usleep (4100);
common_init(p, IF_8BIT);
return 0;
}
// ftdi_HD44780_senddata
void
ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch)
{
// Output data on first channel
int f = ftdi_write_data(&p->ftdic, &ch, 1);
if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", f, ftdi_get_error_string(&p->ftdic));
exit (-1);
}
// Setup RS and R/W and E
ch = p->ftdi_line_E | p->backlight_bit;
if (flags == RS_DATA) {
ch |= p->ftdi_line_RS;
}
f = ftdi_write_data(&p->ftdic2, &ch, 1);
if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", f, ftdi_get_error_string(&p->ftdic2));
exit(-1);
}
// Disable E
ch = 0x00 | p->backlight_bit;
if (flags == RS_DATA) {
ch |= p->ftdi_line_RS;
}
f = ftdi_write_data(&p->ftdic2, &ch, 1);
if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", f, ftdi_get_error_string(&p->ftdic2));
exit(-1);
}
}
void
ftdi_HD44780_backlight(PrivateData *p, unsigned char state)
{
int f;
p->backlight_bit = state ? p->ftdi_line_backlight : 0;
f = ftdi_write_data(&p->ftdic2, &state, 1);
if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", f, ftdi_get_error_string(&p->ftdic2));
exit(-1);
}
}
unsigned char
ftdi_HD44780_scankeypad(PrivateData *p)
{
return 0;
}
void
ftdi_HD44780_close(PrivateData *p)
{
ftdi_disable_bitbang(&p->ftdic);
ftdi_usb_close(&p->ftdic);
ftdi_deinit(&p->ftdic);
ftdi_disable_bitbang(&p->ftdic2);
ftdi_usb_close(&p->ftdic2);
ftdi_deinit(&p->ftdic2);
}
/* EOF */
server/drivers/hd44780-ftdi.h
+15
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@@ -0,0 +1,15 @@
#ifndef HD_FTDI_H
#define HD_FTDI_H
#include "lcd.h" /* for Driver */
#include "hd44780-low.h"
// initialise this particular driver
int hd_init_ftdi(Driver *drvthis);
void ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch);
void ftdi_HD44780_backlight(PrivateData *p, unsigned char state);
unsigned char ftdi_HD44780_scankeypad(PrivateData *p);
void ftdi_HD44780_close(PrivateData *p);
#endif
server/drivers/hd44780-low.h
+15 -1
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@@ -25,6 +25,9 @@
# endif
# endif
#ifdef HAVE_LIBFTDI
# include <ftdi.h>
#endif
// symbolic names for connection types
#define HD44780_CT_UNKNOWN 0
@@ -42,7 +45,8 @@
#define HD44780_CT_MPLAY 12
#define HD44780_CT_BWCTUSB 13
#define HD44780_CT_LCDUSB 14
#define HD44780_CT_I2C 15
#define HD44780_CT_FTDI 15
#define HD44780_CT_I2C 16
// symbolic names for interface types
#define IF_TYPE_UNKNOWN 0
@@ -103,6 +107,16 @@ typedef struct driver_private_data {
int usbIndex; /* USB interface index */
#endif
#ifdef HAVE_LIBFTDI
// FTDI connection type
struct ftdi_context ftdic, ftdic2;
int ftdi_line_RS;
int ftdi_line_RW;
int ftdi_line_E;
int ftdi_line_backlight;
#endif
int charmap;
int width, height;