/*
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/*
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* Microwindows touch screen driver for ADS Graphics Client (www.flatpanels.com)
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* Microwindows touch screen driver for ADS Graphics Client (www.flatpanels.com)
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*
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*
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* Copyright (c) 2000 Century Software Embedded Technologies
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* Copyright (c) 2000 Century Software Embedded Technologies
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*
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*
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* Requires /dev/ts kernel driver (char special 190,34)
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* Requires /dev/ts kernel driver (char special 190,34)
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <errno.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <math.h>
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#include <math.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#include "device.h"
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#include "device.h"
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/* file descriptor for touch panel */
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/* file descriptor for touch panel */
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static int pd_fd = -1;
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static int pd_fd = -1;
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/* Hack extern to used when hiding the mouse cursor
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/* Hack extern to used when hiding the mouse cursor
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* There needs to be a better way to do this
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* There needs to be a better way to do this
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*/
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*/
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extern SCREENDEVICE scrdev;
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extern SCREENDEVICE scrdev;
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static int PD_Open(MOUSEDEVICE *pmd)
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static int PD_Open(MOUSEDEVICE *pmd)
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{
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{
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/*
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/*
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* open up the touch-panel device.
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* open up the touch-panel device.
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* Return the fd if successful, or negative if unsuccessful.
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* Return the fd if successful, or negative if unsuccessful.
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*/
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*/
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pd_fd = open("/dev/ts", O_NONBLOCK);
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pd_fd = open("/dev/ts", O_NONBLOCK);
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if (pd_fd < 0) {
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if (pd_fd < 0) {
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EPRINTF("Error %d opening touch panel\n", errno);
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EPRINTF("Error %d opening touch panel\n", errno);
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return -1;
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return -1;
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}
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}
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GdHideCursor(&scrdev);
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GdHideCursor(&scrdev);
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return pd_fd;
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return pd_fd;
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}
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}
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static void PD_Close(void)
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static void PD_Close(void)
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{
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{
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/* Close the touch panel device. */
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/* Close the touch panel device. */
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EPRINTF("PD_Close called\n");
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EPRINTF("PD_Close called\n");
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if (pd_fd >= 0)
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if (pd_fd >= 0)
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close(pd_fd);
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close(pd_fd);
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pd_fd = -1;
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pd_fd = -1;
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}
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}
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static int PD_GetButtonInfo(void)
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static int PD_GetButtonInfo(void)
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{
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{
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/* get "mouse" buttons supported */
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/* get "mouse" buttons supported */
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return MWBUTTON_L;
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return MWBUTTON_L;
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}
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}
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static void PD_GetDefaultAccel(int *pscale,int *pthresh)
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static void PD_GetDefaultAccel(int *pscale,int *pthresh)
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{
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{
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/*
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/*
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* Get default mouse acceleration settings
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* Get default mouse acceleration settings
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* This doesn't make sense for a touch panel.
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* This doesn't make sense for a touch panel.
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* Just return something inconspicuous for now.
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* Just return something inconspicuous for now.
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*/
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*/
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*pscale = 3;
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*pscale = 3;
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*pthresh = 5;
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*pthresh = 5;
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}
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}
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static int PD_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb)
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static int PD_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb)
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{
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{
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/* read a data point */
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/* read a data point */
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short data[3];
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short data[3];
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int bytes_read;
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int bytes_read;
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bytes_read = read(pd_fd, data, sizeof(data));
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bytes_read = read(pd_fd, data, sizeof(data));
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if (bytes_read != sizeof(data)) {
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if (bytes_read != sizeof(data)) {
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if (errno == EINTR || errno == EAGAIN)
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if (errno == EINTR || errno == EAGAIN)
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return 0;
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return 0;
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/*
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/*
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* kernel driver bug: select returns read available,
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* kernel driver bug: select returns read available,
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* but read returns -1
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* but read returns -1
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* we return 0 here to avoid GsError above
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* we return 0 here to avoid GsError above
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*/
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*/
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/*return -1;*/
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/*return -1;*/
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return 0;
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return 0;
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}
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}
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*px = (MWCOORD)data[0];
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*px = (MWCOORD)data[0];
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*py = (MWCOORD)data[1];
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*py = (MWCOORD)data[1];
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*pb = (data[2]>0?MWBUTTON_L:0);
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*pb = (data[2]>0?MWBUTTON_L:0);
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*pz = 0;
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*pz = 0;
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if((*px == -1 || *py == -1) && *pb >= 0)
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if((*px == -1 || *py == -1) && *pb >= 0)
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return 3; /* only have button data */
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return 3; /* only have button data */
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else if((*px == -1 || *py == -1) && *pb < 0)
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else if((*px == -1 || *py == -1) && *pb < 0)
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return 0; /* don't have any data */
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return 0; /* don't have any data */
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else
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else
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return 2; /* have full set of data */
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return 2; /* have full set of data */
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}
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}
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MOUSEDEVICE mousedev = {
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MOUSEDEVICE mousedev = {
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PD_Open,
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PD_Open,
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PD_Close,
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PD_Close,
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PD_GetButtonInfo,
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PD_GetButtonInfo,
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PD_GetDefaultAccel,
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PD_GetDefaultAccel,
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PD_Read,
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PD_Read,
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NULL
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NULL
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};
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};
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#ifdef TEST
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#ifdef TEST
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int main(int argc, char ** v)
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int main(int argc, char ** v)
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{
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{
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MWCOORD x, y, z;
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MWCOORD x, y, z;
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int b;
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int b;
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int result;
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int result;
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int mouse = -1;
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int mouse = -1;
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DPRINTF("Opening touch panel...\n");
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DPRINTF("Opening touch panel...\n");
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if((result=PD_Open(0)) < 0)
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if((result=PD_Open(0)) < 0)
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DPRINTF("Error %d, result %d opening touch-panel\n", errno, result);
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DPRINTF("Error %d, result %d opening touch-panel\n", errno, result);
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/* This stuff below can be used to set some of the parameters of the
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/* This stuff below can be used to set some of the parameters of the
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* driver from the command line before going in to the test loop.
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* driver from the command line before going in to the test loop.
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* Could this have been done better? Yup.
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* Could this have been done better? Yup.
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*/
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*/
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if(argc > 1) {
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if(argc > 1) {
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ioctl(result,1,atoi(v[1]));
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ioctl(result,1,atoi(v[1]));
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DPRINTF("Setting pressure to %d\n",atoi(v[1]));
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DPRINTF("Setting pressure to %d\n",atoi(v[1]));
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}
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}
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if(argc > 2) {
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if(argc > 2) {
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ioctl(result,2,atoi(v[2]));
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ioctl(result,2,atoi(v[2]));
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DPRINTF("Setting updelay to %d\n",atoi(v[2]));
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DPRINTF("Setting updelay to %d\n",atoi(v[2]));
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}
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}
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if(argc > 3) {
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if(argc > 3) {
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ioctl(result,3,atoi(v[3]));
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ioctl(result,3,atoi(v[3]));
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DPRINTF("Setting raw x to %d\n",atoi(v[3]));
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DPRINTF("Setting raw x to %d\n",atoi(v[3]));
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}
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}
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if(argc > 4) {
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if(argc > 4) {
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ioctl(result,4,atoi(v[4]));
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ioctl(result,4,atoi(v[4]));
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DPRINTF("Setting raw y to %d\n",atoi(v[4]));
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DPRINTF("Setting raw y to %d\n",atoi(v[4]));
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}
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}
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if(argc > 5) {
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if(argc > 5) {
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ioctl(result,5,atoi(v[5]));
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ioctl(result,5,atoi(v[5]));
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DPRINTF("Setting res x to %d\n",atoi(v[5]));
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DPRINTF("Setting res x to %d\n",atoi(v[5]));
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}
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}
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if(argc > 6) {
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if(argc > 6) {
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ioctl(result,6,atoi(v[6]));
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ioctl(result,6,atoi(v[6]));
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DPRINTF("Setting res y to %d\n",atoi(v[6]));
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DPRINTF("Setting res y to %d\n",atoi(v[6]));
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}
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}
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if(argc > 7) {
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if(argc > 7) {
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ioctl(result,7,atoi(v[7]));
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ioctl(result,7,atoi(v[7]));
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DPRINTF("Setting fudge x to %d\n",atoi(v[7]));
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DPRINTF("Setting fudge x to %d\n",atoi(v[7]));
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}
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}
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if(argc > 8) {
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if(argc > 8) {
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ioctl(result,8,atoi(v[8]));
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ioctl(result,8,atoi(v[8]));
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DPRINTF("Setting fudge y to %d\n",atoi(v[8]));
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DPRINTF("Setting fudge y to %d\n",atoi(v[8]));
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}
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}
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if(argc > 9) {
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if(argc > 9) {
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ioctl(result,9,atoi(v[9]));
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ioctl(result,9,atoi(v[9]));
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DPRINTF("Setting average sample to %d\n",atoi(v[9]));
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DPRINTF("Setting average sample to %d\n",atoi(v[9]));
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}
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}
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if(argc > 10) {
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if(argc > 10) {
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ioctl(result,10,atoi(v[10]));
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ioctl(result,10,atoi(v[10]));
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DPRINTF("Setting raw min x to %d\n",atoi(v[10]));
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DPRINTF("Setting raw min x to %d\n",atoi(v[10]));
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}
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}
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if(argc > 11) {
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if(argc > 11) {
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ioctl(result,11,atoi(v[11]));
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ioctl(result,11,atoi(v[11]));
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DPRINTF("Setting raw min y to %d\n",atoi(v[11]));
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DPRINTF("Setting raw min y to %d\n",atoi(v[11]));
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}
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}
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DPRINTF("Reading touch panel...\n");
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DPRINTF("Reading touch panel...\n");
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while(1) {
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while(1) {
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result = PD_Read(&x, &y, &z, &b);
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result = PD_Read(&x, &y, &z, &b);
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if( result > 0) {
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if( result > 0) {
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if(mouse != b) {
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if(mouse != b) {
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mouse = b;
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mouse = b;
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if(mouse)
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if(mouse)
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DPRINTF("Pen Down\n");
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DPRINTF("Pen Down\n");
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else
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else
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DPRINTF("Pen Up\n");
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DPRINTF("Pen Up\n");
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}
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}
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DPRINTF("%d,%d,%d,%d,%d\n", result, x, y, z, b);
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DPRINTF("%d,%d,%d,%d,%d\n", result, x, y, z, b);
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}
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}
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}
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}
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}
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}
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#endif
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#endif
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