ff54c47e64
examples/oneshot/oneshot_main.c: examples/alarm/alarm_main.c: examples/ajoystick/ajoy_main.c examples/djoystick/djoy_main.c examples/buttons/buttons_main.c examples/zerocross/zerocross_main.c graphics/traveler/src/trv_input.c graphics/ft80x/
416 lines
12 KiB
C
416 lines
12 KiB
C
/****************************************************************************
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* apps/graphics/ft80x/ft80x_touch.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <signal.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/lcd/ft80x.h>
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#include "graphics/ft80x.h"
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#include "ft80x.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ft80x_touch_gettransform
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*
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* Description:
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* Read the touch transfrom matrix
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* matrix - The location to return the transfrom matrix
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_touch_gettransform(int fd, FAR uint32_t matrix[6])
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{
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int ret;
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/* Read FT80X_REG_TOUCH_TRANSFORM_A through FT80X_REG_TOUCH_TRANSFORM_F */
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#ifdef CONFIG_LCD_FT800
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ret = ft80x_getregs(fd, FT80X_REG_TOUCH_TRANSFORM_A, 6, matrix);
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#else
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ret = ft80x_getregs(fd, FT80X_REG_CTOUCH_TRANSFORM_A, 6, matrix);
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#endif
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getregs failed: %d\n", ret);
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}
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return ret;
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}
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/****************************************************************************
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* Name: ft80x_touch_tag
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*
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* Description:
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* Read the current touch tag. The touch tag is an 8-bit value
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* identifying the specific graphics object on the screen that is being
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* touched. The value zero indicates that there is no graphic object being
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* touched.
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*
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* Only a single touch can be queried. For the FT801 in "extended",
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* multi-touch mode, this value indicates only the tag associated with
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* touch 0.
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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*
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* Returned Value:
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* A value of 1-255 is returned if a graphics object is touched. Zero is
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* returned if no graphics object is touched. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_touch_tag(int fd)
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{
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uint8_t tag;
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int ret;
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#if defined(CONFIG_LCD_FT800)
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/* Read REG_TOUCH_TAG */
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ret = ft80x_getreg8(fd, FT80X_REG_TOUCH_TAG, &tag);
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#elif defined(CONFIG_LCD_FT801)
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/* Read REG_CTOUCH_TAG */
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ret = ft80x_getreg8(fd, FT80X_REG_CTOUCH_TAG, &tag);
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#endif
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg8 failed: %d\n", ret);
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return ret;
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}
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return (int)tag;
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}
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/****************************************************************************
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* Name: ft80x_touch_waittag
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*
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* Description:
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* Wait until there is a change in the touch tag.
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* oldtag - The previous tag value. This function will return when the
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* current touch tag differs from this value.
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*
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* Returned Value:
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* A value of 1-255 is returned if a graphics object is touched. Zero is
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* returned if no graphics object is touched. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_touch_waittag(int fd, uint8_t oldtag)
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{
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struct ft80x_notify_s notify;
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struct timespec timeout;
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sigset_t set;
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uint8_t tag;
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int ret;
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/* Block the signal so that it will pend if received asynchronously */
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(void)sigemptyset(&set);
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(void)sigaddset(&set, CONFIG_GRAPHICS_FT80X_TAG_SIGNAL);
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ret = pthread_sigmask(SIG_BLOCK, &set, NULL);
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if (ret < 0)
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{
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ret = -errno;
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ft80x_err("ERROR: pthread_sigmask for signal %d failed: %d\n",
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CONFIG_GRAPHICS_FT80X_TAG_SIGNAL, ret);
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return ret;
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}
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notify.event.sigev_notify = SIGEV_SIGNAL;
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notify.event.sigev_signo = CONFIG_GRAPHICS_FT80X_TAG_SIGNAL;
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notify.pid = getpid();
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notify.id = FT80X_NOTIFY_TAG;
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notify.enable = false;
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for (; ; )
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{
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/* Read the current touch tag. */
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ret = ft80x_touch_tag(fd);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_touch_tag failed: %d\n", ret);
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return ret;
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}
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/* Check if the touch tag has already changed */
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tag = (uint8_t)(ret & 0xff);
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ft80x_info("oldtag=%u tag=%u\n", oldtag, tag);
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if (tag == oldtag)
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{
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/* The tag has changed... return success */
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ret = OK;
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break;
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}
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/* Set up to receive a notification when the touch tag changes.
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* NOTE that there is a race condition here between the preceding test
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* and the time when the event is registered. We catch this with a
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* timeout below.
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*/
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notify.enable = true;
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ret = ioctl(fd, FT80X_IOC_EVENTNOTIFY,
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(unsigned long)((uintptr_t)¬ify));
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if (ret < 0)
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{
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ret = -errno;
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ft80x_err("ERROR: ioctl(FT80X_IOC_EVENTNOTIFY) failed: %d\n", ret);
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break;
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}
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/* Now wait for the signal event (or a timeout) */
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timeout.tv_sec = 0;
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timeout.tv_nsec = 400 * 1000 * 1000;
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ret = sigtimedwait(&set, NULL, &timeout);
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/* Make sure that the event notification is again disabled */
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notify.enable = false;
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(void)ioctl(fd, FT80X_IOC_EVENTNOTIFY,
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(unsigned long)((uintptr_t)¬ify));
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/* Check if the signal was received correctly or if the timeout occurred. */
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if (ret < 0)
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{
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int errcode = errno;
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if (errcode != EAGAIN)
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{
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ft80x_err("ERROR: ioctl(FT80X_IOC_EVENTNOTIFY) failed: %d\n",
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errcode);
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ret = -errcode;
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break;
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}
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}
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}
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(void)pthread_sigmask(SIG_UNBLOCK, &set, NULL);
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return tag;
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}
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/****************************************************************************
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* Name: ft80x_touch_info
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*
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* Description:
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* Return the current touch tag and touch position information.
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*
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* For the FT801 in "extended", multi-touch mode, the tag value indicates
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* only the tag associated with touch 0.
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*
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* Touch positions of -32768 indicate that no touch is detected.
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* info - Location in which to return the touch information
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*
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* Returned Value:
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* A value of 1-255 is returned if a graphics object is touched. Zero is
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* returned if no graphics object is touched. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_touch_info(int fd, FAR struct ft80x_touchinfo_s *info)
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{
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int ret;
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DEBUGASSERT(info != NULL);
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#if defined(CONFIG_LCD_FT800)
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/* Read REG_TOUCH_TAG */
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ret = ft80x_getreg8(fd, FT80X_REG_TOUCH_TAG, &info->tag);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg8 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_TOUCH_TAG_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_TOUCH_TAG_XY, &info->tagpos.xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_TOUCH_RZ register */
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ret = ft80x_getreg16(fd, FT80X_REG_TOUCH_RZ,
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(FAR uint16_t *)&info->pressure);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg16 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_TOUCH_SCREEN_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_TOUCH_SCREEN_XY, &info->pos.xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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#elif defined(CONFIG_LCD_FT801)
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/* Read REG_CTOUCH_TAG */
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ret = ft80x_getreg8(fd, FT80X_REG_CTOUCH_TAG, &info->tag);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg8 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_CTOUCH_TAG_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TAG_XY, &info->tagpos.xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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#ifndef CONFIG_LCD_FT801_MULTITOUCH
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/* Read the FT80X_REG_CTOUCH_TOUCH0_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TOUCH0_XY, &info->pos.xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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#else
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/* Read the FT80X_REG_CTOUCH_TOUCH0_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TOUCH0_XY, &info->pos[0].xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_CTOUCH_TOUCH1_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TOUCH1_XY, &info->pos[1].xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_CTOUCH_TOUCH2_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TOUCH2_XY, &info->pos[2].xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_CTOUCH_TOUCH3_XY register */
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ret = ft80x_getreg32(fd, FT80X_REG_CTOUCH_TOUCH3_XY, &info->pos[3].xy);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg32 failed: %d\n", ret);
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return ret;
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}
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/* Read the FT80X_REG_CTOUCH_TOUCH4_X and Y registers */
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ret = ft80x_getreg16(fd, FT80X_REG_CTOUCH_TOUCH4_X,
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(FAR uint16_t *)&info->pos[4].u.x);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg16 failed: %d\n", ret);
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return ret;
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}
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ret = ft80x_getreg16(fd, FT80X_REG_CTOUCH_TOUCH4_Y,
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(FAR uint16_t *)&info->pos[4].u.y);
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if (ret < 0)
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{
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ft80x_err("ERROR: ft80x_getreg16 failed: %d\n", ret);
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return ret;
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}
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#endif /* CONFIG_LCD_FT801_MULTITOUCH */
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#endif /* CONFIG_LCD_FT800/1 */
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return OK;
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}
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