* apps/graphics/input/generator/input_gen_dev.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF 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. You may 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.
*
****************************************************************************/
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <nuttx/input/mouse.h>
#include "input_gen_internal.h"
* Pre-processor Definitions
****************************************************************************/
#define INPUT_GEN_DEV_PATH_UTOUCH "/dev/utouch"
#define INPUT_GEN_DEV_PATH_UBUTTON "/dev/ubutton"
#define INPUT_GEN_DEV_PATH_UMOUSE "/dev/umouse"
#define INPUT_GEN_DEV_PATH_UKEYBOARD "/dev/ukeyboard"
* Public Functions
****************************************************************************/
* Name: input_gen_dev2path
*
* Description:
* Convert device type to device path.
*
* Input Parameters:
* device - Device type
*
* Returned Value:
* Device path string.
*
****************************************************************************/
FAR const char *input_gen_dev2path(input_gen_dev_t device)
{
switch (device)
{
case INPUT_GEN_DEV_UTOUCH:
return INPUT_GEN_DEV_PATH_UTOUCH;
case INPUT_GEN_DEV_UBUTTON:
return INPUT_GEN_DEV_PATH_UBUTTON;
case INPUT_GEN_DEV_UMOUSE:
return INPUT_GEN_DEV_PATH_UMOUSE;
case INPUT_GEN_DEV_UKEYBOARD:
return INPUT_GEN_DEV_PATH_UKEYBOARD;
default:
gerr("ERROR: Invalid device type: %d\n", device);
return "";
}
}
* Name: input_gen_utouch_write
*
* Description:
* Write touch sample to the device.
*
* Input Parameters:
* fd - File descriptor of the device
* sample - Pointer to the touch sample structure
*
* Returned Value:
* Zero (OK) is returned on success. On failure, a negated errno value is
* returned.
*
****************************************************************************/
int input_gen_utouch_write(int fd, FAR const struct touch_sample_s *sample)
{
size_t nbytes = SIZEOF_TOUCH_SAMPLE_S(sample->npoints);
ssize_t ret = write(fd, sample, nbytes);
if (ret != nbytes)
{
gerr("ERROR: utouch_write failed: nbytes = %zu, ret = %zd, error = %d,"
" data = %" PRId32 " points, first at x = %d, y = %d,"
" pressure = %u\n",
nbytes, ret, errno, sample->npoints, sample->point[0].x,
sample->point[0].y, sample->point[0].pressure);
return ret < 0 ? -errno : -EIO;
}
ginfo("utouch_write: %" PRId32 " points, first at x = %d, y = %d, pressure = %u\n",
sample->npoints, sample->point[0].x, sample->point[0].y,
sample->point[0].pressure);
return OK;
}
* Name: input_gen_ubutton_write
*
* Description:
* Write button state to the device.
*
* Input Parameters:
* fd - File descriptor of the device
* mask - Button mask
*
* Returned Value:
* Zero (OK) is returned on success. On failure, a negated errno value is
* returned.
*
****************************************************************************/
int input_gen_ubutton_write(int fd, btn_buttonset_t mask)
{
ssize_t ret = write(fd, &mask, sizeof(mask));
if (ret != sizeof(mask))
{
gerr("ERROR: ubutton_write failed: %zd, error = %d\n", ret, errno);
return ret < 0 ? -errno : -EIO;
}
ginfo("ubutton_write: mask = 0x%08" PRIX32 "\n", mask);
return OK;
}
* Name: input_gen_umouse_write
*
* Description:
* Write mouse wheel state to the device.
*
* Input Parameters:
* fd - File descriptor of the device
* wheel - Mouse wheel value
*
* Returned Value:
* Zero (OK) is returned on success. On failure, a negated errno value is
* returned.
*
****************************************************************************/
#ifdef CONFIG_INPUT_MOUSE_WHEEL
int input_gen_umouse_write(int fd, int16_t wheel)
{
struct mouse_report_s sample;
ssize_t ret;
memset(&sample, 0, sizeof(sample));
sample.wheel = wheel;
ret = write(fd, &sample, sizeof(sample));
if (ret != sizeof(sample))
{
gerr("ERROR: umouse_write failed: %zd, error = %d\n", ret, errno);
return ret < 0 ? -errno : -EIO;
}
ginfo("umouse_write: wheel = %d\n", wheel);
return OK;
}
#endif
* Name: input_gen_grab / input_gen_ungrab
*
* Description:
* Grab or ungrab the input device.
*
* Input Parameters:
* dev - The input generator device.
*
* Returned Value:
* Zero (OK) is returned on success. On failure, a negated errno value is
* returned.
*
****************************************************************************/
int input_gen_grab(FAR struct input_gen_dev_s *dev)
{
* programs like LVGL from receiving events from the device.
*/
#if CONFIG_FS_LOCK_BUCKET_SIZE > 0
if (flock(dev->fd, LOCK_EX | LOCK_NB) < 0)
{
gerr("ERROR: input_gen_grab failed: %d\n", errno);
return -errno;
}
#endif
return OK;
}
int input_gen_ungrab(FAR struct input_gen_dev_s *dev)
{
#if CONFIG_FS_LOCK_BUCKET_SIZE > 0
if (flock(dev->fd, LOCK_UN) < 0)
{
gerr("ERROR: input_gen_ungrab failed: %d\n", errno);
return -errno;
}
#endif
return OK;
}