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/**************************************************************************
*
* Copyright (c) 2013 Alcatel-Lucent
*
* Alcatel Lucent licenses this file to You under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. A copy of the License is contained the
* file LICENSE at the top level of this repository.
* You may also obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**************************************************************************
*
* tsi.c:
*
* Touch Screen Interface...
*
* Original author: Ed Sutter (ed.sutter@alcatel-lucent.com)
*
*/
#include "config.h"
#if INCLUDE_TSI & INCLUDE_FBI
#include "genlib.h"
#include "cli.h"
#include "fbi.h"
#include "tsi.h"
#include "timer.h"
int
tsi_scribble(int width, long color)
{
int x, y, xx, yy, done, last_x, last_y;
static int xadjust, yadjust;
printf("Entering 'scribble' mode, hit any key to terminate...\n");
last_x = last_y = done = 0;
while (!done) {
/* Use 'a', 'd', 'w' and 'x' as special input to adjust the
* coordinates between touch and frame buffer.
*/
if (gotachar()) {
switch(getchar()) {
case 'a': // LEFT
xadjust--;
break;
case 'd': // RIGHT
xadjust++;
break;
case 'w': // UP
yadjust--;
break;
case 'x': // DOWN
yadjust++;
break;
default:
done = 1;
break;
}
}
if (tsi_active()) {
x = tsi_getx();
y = tsi_gety();
/* If incoming coordinate is ever more than 'PEN_MOVE_FILTER'
* pixels away from the previous position, then assume it
* to be noise and don't display it.
*/
if ((x < (last_x + PEN_MOVE_FILTER)) &&
(x > (last_x - PEN_MOVE_FILTER)) &&
(y < (last_y + PEN_MOVE_FILTER)) &&
(y > (last_y - PEN_MOVE_FILTER)))
{
x += xadjust;
y += yadjust;
for(xx = x-width;xx <= x+width;xx++) {
for(yy = y-width;yy <= y+width;yy++)
fbi_setpixel(xx,yy,color);
}
}
last_x = x;
last_y = y;
}
}
if ((xadjust != 0) || (yadjust != 0))
printf("Xadjust: %d, Yadjust: %d\n",xadjust, yadjust);
return(0);
}
#define WFNT_FILTER 200
char *TsiHelp[] = {
"Touch screen interface",
"-[v] {cmd} [args...]",
#if INCLUDE_VERBOSEHELP
"Options:",
" -v additive verbosity",
"",
"Commands:",
" scribble {width} {color} # draw on the frame buffer",
" wft [msec-timeout] # wait for touch",
" wfnt [msec-timeout] # wait for no touch",
"",
"Notes:",
" Shell variable 'TSI_X' and 'TSI_Y' are populated by 'wft'.",
#endif
0,
};
int
TsiCmd(int argc,char *argv[])
{
static int tsiInitialized;
int opt, verbose;
char *cmd, *arg1;
static struct elapsed_tmr tmr;
// Make sure the touch-screen interface is initialized...
if (!tsiInitialized) {
if (tsi_init() == -1) {
printf("Error intializing touch screen!\n");
return(CMD_FAILURE);
}
tsiInitialized = 1;
}
verbose = 0;
while((opt=getopt(argc,argv,"v")) != -1) {
switch(opt) {
case 'v':
verbose++;
break;
default:
return(CMD_PARAM_ERROR);
}
}
if (argc < optind + 1)
return(CMD_FAILURE);
cmd = argv[optind];
arg1 = argv[optind+1];
if (strcmp(cmd,"scribble") == 0) {
int width;
long color;
if (argc != optind+3)
return(CMD_PARAM_ERROR);
width = strtol(arg1,0,0);
color = strtol(argv[optind+2],0,0);
tsi_scribble(width,color);
}
else if (strcmp(cmd,"wfnt") == 0) {
int x, y;
int filter, ftot;
if (argc == optind+2) {
int timeout = strtol(arg1,0,0);
startElapsedTimer(&tmr,timeout);
while(1) {
x = tsi_getx();
y = tsi_gety();
if (!tsi_active()) {
for(ftot=0,filter=0;filter<WFNT_FILTER;filter++)
ftot += tsi_active() ? 0 : 1;
if (ftot == WFNT_FILTER)
break;
}
if(msecElapsed(&tmr)) {
x = y = -1;
break;
}
}
}
else {
while(1) {
x = tsi_getx();
y = tsi_gety();
if (!tsi_active()) {
for(ftot=0,filter=0;filter<WFNT_FILTER;filter++)
ftot += tsi_active() ? 0 : 1;
if (ftot == WFNT_FILTER)
break;
}
}
}
shell_sprintf("TSI_X","%d",x);
shell_sprintf("TSI_Y","%d",y);
}
else if (strcmp(cmd,"wft") == 0) {
int x, y;
if (argc == optind+2) {
int timeout = strtol(arg1,0,0);
startElapsedTimer(&tmr,timeout);
while(1) {
if (tsi_active()) {
x = tsi_getx();
y = tsi_gety();
break;
}
if(msecElapsed(&tmr)) {
x = y = -1;
break;
}
}
}
else {
while(!tsi_active());
x = tsi_getx();
y = tsi_gety();
}
shell_sprintf("TSI_X","%d",x);
shell_sprintf("TSI_Y","%d",y);
}
else
return(CMD_PARAM_ERROR);
return(CMD_SUCCESS);
}
#endif
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