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[lcd4linux @ 2006-02-21 21:43:03 by harbaum]

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Keypad support for LCD2USB

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@644 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
harbaum
2006-02-21 21:43:03 +00:00
parent 6fcef13439
commit 033a575a18
1 changed files with 67 additions and 16 deletions
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83
drv_LCD2USB.c
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@@ -1,4 +1,4 @@
/* $Id: drv_LCD2USB.c,v 1.6 2006/02/12 14:32:24 harbaum Exp $
/* $Id: drv_LCD2USB.c,v 1.7 2006/02/21 21:43:03 harbaum Exp $
*
* driver for USB2LCD display interface
* see http://www.harbaum.org/till/lcd2usb for schematics
@@ -24,6 +24,9 @@
*
*
* $Log: drv_LCD2USB.c,v $
* Revision 1.7 2006/02/21 21:43:03 harbaum
* Keypad support for LCD2USB
*
* Revision 1.6 2006/02/12 14:32:24 harbaum
* Configurable bus/device id
*
@@ -69,19 +72,25 @@
#include "debug.h"
#include "cfg.h"
#include "timer.h"
#include "qprintf.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "widget_keypad.h"
#include "drv.h"
#include "drv_generic_text.h"
#include "drv_generic_keypad.h"
/* vid/pid donated by FTDI */
#define LCD_USB_VENDOR 0x0403
#define LCD_USB_DEVICE 0xC630
/* number of buttons on display */
#define L2U_BUTTONS (2)
#define LCD_ECHO (0<<5)
#define LCD_CMD (1<<5)
#define LCD_DATA (2<<5)
@@ -127,11 +136,11 @@ static int drv_L2U_open(char *bus_id, char *device_id)
info("%s: scanning USB for LCD2USB interface ...", Name);
if(bus_id != NULL)
info("%s: scanning for bus id: %s", Name, bus_id);
if (bus_id != NULL)
info("%s: scanning for bus id: %s", Name, bus_id);
if(device_id != NULL)
info("%s: scanning for device id: %s", Name, device_id);
if (device_id != NULL)
info("%s: scanning for device id: %s", Name, device_id);
usb_debug = 0;
@@ -141,15 +150,15 @@ static int drv_L2U_open(char *bus_id, char *device_id)
busses = usb_get_busses();
for (bus = busses; bus; bus = bus->next) {
/* search this bus if no bus id was given or if this is the given bus id */
if(!bus_id || (bus_id && !strcasecmp(bus->dirname, bus_id))) {
/* search this bus if no bus id was given or if this is the given bus id */
if (!bus_id || (bus_id && !strcasecmp(bus->dirname, bus_id))) {
for (dev = bus->devices; dev; dev = dev->next) {
/* search this device if no device id was given or if this is the given device id */
if(!device_id || (device_id && !strcasecmp(dev->filename, device_id))) {
/* search this device if no device id was given or if this is the given device id */
if (!device_id || (device_id && !strcasecmp(dev->filename, device_id))) {
if ((dev->descriptor.idVendor == LCD_USB_VENDOR) && (dev->descriptor.idProduct == LCD_USB_DEVICE)) {
info("%s: found LCD2USB interface on bus %s device %s", Name, bus->dirname, dev->filename);
info("%s: found LCD2USB interface on bus %s device %s", Name, bus->dirname, dev->filename);
lcd = usb_open(dev);
if (usb_claim_interface(lcd, 0) < 0) {
error("%s: usb_claim_interface() failed!", Name);
@@ -286,9 +295,7 @@ static unsigned long drv_L2U_get_buttons(void)
{
int buttons = drv_L2U_get(LCD_GET_BUTTONS);
if (buttons != -1)
info("%s: button state 0:%s 1:%s", Name, (buttons & 1) ? "on" : "off", (buttons & 2) ? "on" : "off");
else {
if (buttons == -1) {
error("%s: unable to read button state", Name);
buttons = 0;
}
@@ -433,6 +440,42 @@ static int drv_L2U_brightness(int brightness)
return brightness;
}
static void drv_L2U_timer(void __attribute__ ((unused)) * notused)
{
static unsigned long last_but = 0;
unsigned long new_but = drv_L2U_get_buttons();
int i;
/* check if button state changed */
if (new_but ^ last_but) {
/* send single keypad events for all changed buttons */
for (i = 0; i < L2U_BUTTONS; i++)
if ((new_but & (1 << i)) ^ (last_but & (1 << i)))
drv_generic_keypad_press(((new_but & (1 << i)) ? 0x80 : 0) | i);
}
last_but = new_but;
}
static int drv_L2U_keypad(const int num)
{
int val = 0;
/* check for key press event */
if (num & 0x80)
val = KEY_PRESSED;
else
val = KEY_RELEASED;
if ((num & 0x7f) == 0)
val += KEY_UP;
if ((num & 0x7f) == 1)
val += KEY_DOWN;
return val;
}
static int drv_L2U_start(const char *section, const int quiet)
{
@@ -454,6 +497,7 @@ static int drv_L2U_start(const char *section, const int quiet)
DROWS = rows;
DCOLS = cols;
KEYPADSIZE = L2U_BUTTONS;
/* bus id and device id are strings and not just intergers, since */
/* the windows port of libusb treats them as strings. And this way */
@@ -475,8 +519,9 @@ static int drv_L2U_start(const char *section, const int quiet)
if (!controllers)
return -1;
/* call get_buttons to make compiler happy ... */
drv_L2U_get_buttons();
/* regularly request key state */
/* Fixme: make 100msec configurable */
timer_add(drv_L2U_timer, NULL, 100, 0);
if (cfg_number(section, "Contrast", 0, 0, 255, &contrast) > 0) {
drv_L2U_contrast(contrast);
@@ -553,7 +598,7 @@ int drv_L2U_init(const char *section, const int quiet)
int asc255bug;
int ret;
info("%s: %s", Name, "$Revision: 1.6 $");
info("%s: %s", Name, "$Revision: 1.7 $");
/* display preferences */
XRES = 5; /* pixel width of one char */
@@ -565,6 +610,7 @@ int drv_L2U_init(const char *section, const int quiet)
/* real worker functions */
drv_generic_text_real_write = drv_L2U_write;
drv_generic_text_real_defchar = drv_L2U_defchar;
drv_generic_keypad_real_press = drv_L2U_keypad;
/* start display */
if ((ret = drv_L2U_start(section, quiet)) != 0)
@@ -591,6 +637,10 @@ int drv_L2U_init(const char *section, const int quiet)
if (!asc255bug)
drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */
/* initialize generic key pad driver */
if ((ret = drv_generic_keypad_init(section, Name)) != 0)
return ret;
/* register text widget */
wc = Widget_Text;
wc.draw = drv_generic_text_draw;
@@ -621,6 +671,7 @@ int drv_L2U_quit(const int quiet)
info("%s: shutting down.", Name);
drv_generic_text_quit();
drv_generic_keypad_quit();
/* clear display */
drv_L2U_clear();