mangavalk/lcdproc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix deprecation message by migrating to to ftdi_set_bitmode(). Fix style.

Browse Source
This commit is contained in:
mmdolze
2011-04-06 19:04:03 +00:00
parent 55d4668ff9
commit fa07c1ebc1
1 changed files with 50 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files
server/drivers/hd44780-ftdi.c
+50 -48
View File
@@ -1,8 +1,21 @@
/** \file server/drivers/hd44780-ftdi.c /** \file server/drivers/hd44780-ftdi.c
* \c ftdi connection type of \c hd44780 driver for Hitachi HD44780 based LCD displays. * \c ftdi connection type of \c hd44780 driver for Hitachi HD44780 based LCD displays.
*
\verbatim
info for 4bit mode (ftdi_mode == 4):
wiring example:
FTDI chip: D0 D1 D2 D3 D4 D5 D6 D7
| | | | | | | |
HD44780: D4 D5 D6 D7 EN RS RW n/c
in LCDd.conf we then need to define
ftdi_line_RS=0x40
ftdi_line_RW=0x20
ftdi_line_EN=0x10
\endverbatim
*/ */
/* /*-
* FTDI/USB driver module for Hitachi HD44780 based LCD displays * FTDI/USB driver module for Hitachi HD44780 based LCD displays
* connected to a FT2232C/D chip in 8 bit mode. * connected to a FT2232C/D chip in 8 bit mode.
* *
@@ -16,23 +29,6 @@
* *
*/ */
/* info for 4bit mote (ftdi_mode == 4):
wiring example:
FTDI chip: D0 D1 D2 D3 D4 D5 D6 D7
| | | | | | | |
HD44780: D4 D5 D6 D7 EN RS RW n/c
in LCDd.conf we then need to define
ftdi_line_RS=0x40
ftdi_line_RW=0x20
ftdi_line_EN=0x10
*/
#include "hd44780-ftdi.h"
#include "hd44780-low.h"
#include "report.h"
#include <stdlib.h> #include <stdlib.h>
#include <unistd.h> #include <unistd.h>
#include <string.h> #include <string.h>
@@ -47,8 +43,11 @@
# include "config.h" # include "config.h"
#endif #endif
#include "hd44780-ftdi.h"
#include "hd44780-low.h"
#include "report.h"
// connection type specific functions to be exposed using pointers in init() /* connection type specific functions to be exposed using pointers in init() */
void ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch); void ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch);
void ftdi_HD44780_backlight(PrivateData *p, unsigned char state); void ftdi_HD44780_backlight(PrivateData *p, unsigned char state);
void ftdi_HD44780_close(PrivateData *p); void ftdi_HD44780_close(PrivateData *p);
@@ -66,30 +65,30 @@ hd_init_ftdi(Driver *drvthis)
int vendor_id, product_id; int vendor_id, product_id;
int f; int f;
PrivateData *p = (PrivateData*) drvthis->private_data; PrivateData *p = (PrivateData *)drvthis->private_data;
p->hd44780_functions->senddata = ftdi_HD44780_senddata; p->hd44780_functions->senddata = ftdi_HD44780_senddata;
p->hd44780_functions->backlight = ftdi_HD44780_backlight; p->hd44780_functions->backlight = ftdi_HD44780_backlight;
p->hd44780_functions->close = ftdi_HD44780_close; p->hd44780_functions->close = ftdi_HD44780_close;
// Load config /* Load config */
vendor_id = drvthis->config_get_int(drvthis->name, "VendorID", 0, 0x0403); vendor_id = drvthis->config_get_int(drvthis->name, "VendorID", 0, 0x0403);
product_id = drvthis->config_get_int(drvthis->name, "ProductID", 0, 0x6001); product_id = drvthis->config_get_int(drvthis->name, "ProductID", 0, 0x6001);
// these config settings are not documented intentionally /* these config settings are not documented intentionally */
p->ftdi_mode = drvthis->config_get_int(drvthis->name, "ftdi_mode", 0, 8); p->ftdi_mode = drvthis->config_get_int(drvthis->name, "ftdi_mode", 0, 8);
p->ftdi_line_RS = drvthis->config_get_int(drvthis->name, "ftdi_line_RS", 0, 0x01); 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_RW = drvthis->config_get_int(drvthis->name, "ftdi_line_RW", 0, 0x02);
p->ftdi_line_EN = drvthis->config_get_int(drvthis->name, "ftdi_line_EN", 0, 0x04); p->ftdi_line_EN = drvthis->config_get_int(drvthis->name, "ftdi_line_EN", 0, 0x04);
p->ftdi_line_backlight = drvthis->config_get_int(drvthis->name, "ftdi_line_backlight", 0, 0x08); p->ftdi_line_backlight = drvthis->config_get_int(drvthis->name, "ftdi_line_backlight", 0, 0x08);
//some foolproof check /* some foolproof check */
if (p->ftdi_mode != 4 && p->ftdi_mode != 8) { if (p->ftdi_mode != 4 && p->ftdi_mode != 8) {
report(RPT_ERR, "invalid ftdi_mode: %d", p->ftdi_mode); report(RPT_ERR, "invalid ftdi_mode: %d", p->ftdi_mode);
return -1; return -1;
} }
// Init 1. channel: data /* Init 1. channel: data */
ftdi_init(&p->ftdic); ftdi_init(&p->ftdic);
ftdi_set_interface(&p->ftdic, INTERFACE_A); ftdi_set_interface(&p->ftdic, INTERFACE_A);
f = ftdi_usb_open(&p->ftdic, vendor_id, product_id); f = ftdi_usb_open(&p->ftdic, vendor_id, product_id);
@@ -102,7 +101,7 @@ hd_init_ftdi(Driver *drvthis)
debug(RPT_DEBUG, "enabling bitbang mode(channel 1)\n"); debug(RPT_DEBUG, "enabling bitbang mode(channel 1)\n");
if (p->ftdi_mode == 4) { if (p->ftdi_mode == 4) {
//set fast baudrate for 4 bit wiring to eliminate garbage on lcd /* set fast baudrate for 4 bit wiring to eliminate garbage on lcd */
f = ftdi_set_baudrate(&p->ftdic, 921600); f = ftdi_set_baudrate(&p->ftdic, 921600);
if (f < 0) { if (f < 0) {
report(RPT_ERR, "unable to open ftdi device: %d (%s)", f, ftdi_get_error_string(&p->ftdic)); report(RPT_ERR, "unable to open ftdi device: %d (%s)", f, ftdi_get_error_string(&p->ftdic));
@@ -110,10 +109,10 @@ hd_init_ftdi(Driver *drvthis)
} }
} }
ftdi_enable_bitbang(&p->ftdic, 0xFF); ftdi_set_bitmode(&p->ftdic, 0xFF, BITMODE_BITBANG);
if (p->ftdi_mode == 8) { if (p->ftdi_mode == 8) {
// Init 2. channel: control /* Init 2. channel: control */
ftdi_init(&p->ftdic2); ftdi_init(&p->ftdic2);
ftdi_set_interface(&p->ftdic2, INTERFACE_B); ftdi_set_interface(&p->ftdic2, INTERFACE_B);
f = ftdi_usb_open(&p->ftdic2, vendor_id, product_id); f = ftdi_usb_open(&p->ftdic2, vendor_id, product_id);
@@ -124,18 +123,21 @@ hd_init_ftdi(Driver *drvthis)
debug(RPT_DEBUG, "ftdi open succeeded(channel 2): %d", f); debug(RPT_DEBUG, "ftdi open succeeded(channel 2): %d", f);
debug(RPT_DEBUG, "enabling bitbang mode (channel 2)"); debug(RPT_DEBUG, "enabling bitbang mode (channel 2)");
ftdi_enable_bitbang(&p->ftdic2, 0xFF); ftdi_set_bitmode(&p->ftdic2, 0xFF, BITMODE_BITBANG);
// FTDI bug: Sometimes first write gets lost on kernel 2.6, needs investigation. /*
ftdi_HD44780_senddata (p, 0, RS_INSTR, FUNCSET | IF_8BIT); * FTDI bug: Sometimes first write gets lost on kernel 2.6, needs
usleep (4100); * investigation.
*/
ftdi_HD44780_senddata(p, 0, RS_INSTR, FUNCSET | IF_8BIT);
usleep(4100);
common_init(p, IF_8BIT); common_init(p, IF_8BIT);
} }
else if (p->ftdi_mode == 4) { else if (p->ftdi_mode == 4) {
ftdi_HD44780_senddata (p, 0, RS_INSTR, FUNCSET | IF_4BIT ); ftdi_HD44780_senddata(p, 0, RS_INSTR, FUNCSET | IF_4BIT);
ftdi_HD44780_senddata (p, 0, RS_INSTR, FUNCSET | IF_4BIT ); ftdi_HD44780_senddata(p, 0, RS_INSTR, FUNCSET | IF_4BIT);
ftdi_HD44780_senddata (p, 0, RS_INSTR, FUNCSET | IF_4BIT ); ftdi_HD44780_senddata(p, 0, RS_INSTR, FUNCSET | IF_4BIT);
common_init(p, IF_4BIT); common_init(p, IF_4BIT);
} }
@@ -156,15 +158,15 @@ void
ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch) ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch)
{ {
if (p->ftdi_mode == 8) { if (p->ftdi_mode == 8) {
// Output data on first channel /* Output data on first channel */
int f = ftdi_write_data(&p->ftdic, &ch, 1); int f = ftdi_write_data(&p->ftdic, &ch, 1);
if (f < 0) { if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting",
f, ftdi_get_error_string(&p->ftdic)); f, ftdi_get_error_string(&p->ftdic));
exit (-1); exit(-1);
} }
// Setup RS and R/W and EN /* Setup RS and R/W and EN */
ch = p->ftdi_line_EN | p->backlight_bit; ch = p->ftdi_line_EN | p->backlight_bit;
if (flags == RS_DATA) { if (flags == RS_DATA) {
ch |= p->ftdi_line_RS; ch |= p->ftdi_line_RS;
@@ -172,11 +174,11 @@ ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char fla
f = ftdi_write_data(&p->ftdic2, &ch, 1); f = ftdi_write_data(&p->ftdic2, &ch, 1);
if (f < 0) { if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting",
f, ftdi_get_error_string(&p->ftdic2)); f, ftdi_get_error_string(&p->ftdic2));
exit(-1); exit(-1);
} }
// Disable E /* Disable E */
ch = 0x00 | p->backlight_bit; ch = 0x00 | p->backlight_bit;
if (flags == RS_DATA) { if (flags == RS_DATA) {
ch |= p->ftdi_line_RS; ch |= p->ftdi_line_RS;
@@ -184,7 +186,7 @@ ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char fla
f = ftdi_write_data(&p->ftdic2, &ch, 1); f = ftdi_write_data(&p->ftdic2, &ch, 1);
if (f < 0) { if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting",
f, ftdi_get_error_string(&p->ftdic2)); f, ftdi_get_error_string(&p->ftdic2));
exit(-1); exit(-1);
} }
} }
@@ -196,20 +198,20 @@ ftdi_HD44780_senddata(PrivateData *p, unsigned char displayID, unsigned char fla
portControl = p->ftdi_line_RS; portControl = p->ftdi_line_RS;
} }
buf[0] = ((ch>>4) & 0x0F) | portControl | p->ftdi_line_EN; buf[0] = ((ch >> 4) & 0x0F) | portControl | p->ftdi_line_EN;
buf[1] = ((ch>>4) & 0x0F) | portControl; buf[1] = ((ch >> 4) & 0x0F) | portControl;
buf[2] = (ch & 0x0F) | portControl | p->ftdi_line_EN; buf[2] = (ch & 0x0F) | portControl | p->ftdi_line_EN;
buf[3] = (ch & 0x0F) | portControl; buf[3] = (ch & 0x0F) | portControl;
int f = ftdi_write_data(&p->ftdic, buf, 4); int f = ftdi_write_data(&p->ftdic, buf, 4);
if (f < 0) { if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting",
f, ftdi_get_error_string(&p->ftdic)); f, ftdi_get_error_string(&p->ftdic));
exit(-1); exit(-1);
} }
if (flags == RS_INSTR) { if (flags == RS_INSTR) {
usleep (4100); usleep(4100);
} }
} }
} }
@@ -231,7 +233,7 @@ ftdi_HD44780_backlight(PrivateData *p, unsigned char state)
f = ftdi_write_data(&p->ftdic2, &state, 1); f = ftdi_write_data(&p->ftdic2, &state, 1);
if (f < 0) { if (f < 0) {
p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting", p->hd44780_functions->drv_report(RPT_ERR, "failed to write: %d (%s). Exiting",
f, ftdi_get_error_string(&p->ftdic2)); f, ftdi_get_error_string(&p->ftdic2));
exit(-1); exit(-1);
} }
} }