kopia lustrzana https://github.com/OpenRTX/OpenRTX
Linux: driver for unix pseudoTTY character device
Silvano Seva
rodzic
d808546031
commit
30be60183c
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@ -283,6 +283,7 @@ linux_platform_src = ['platform/targets/linux/emulator/emulator.c',
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'platform/drivers/NVM/nvmem_linux.c',
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'platform/drivers/GPS/GPS_linux.c',
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'platform/mcu/x86_64/drivers/delays.c',
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'platform/mcu/x86_64/drivers/pty.c',
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'platform/mcu/x86_64/drivers/rng.cpp',
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'platform/drivers/baseband/radio_linux.cpp',
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'platform/drivers/audio/audio_linux.c',
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@ -307,6 +308,7 @@ linux_def = def + {'SCREEN_WIDTH': '160', 'SCREEN_HEIGHT': '128', 'PIX_FMT_RGB56
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linux_def += {'VP_USE_FILESYSTEM':''}
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linux_inc = inc + ['platform/targets/linux',
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'platform/mcu/x86_64',
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'platform/targets/linux/emulator']
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if not meson.is_cross_build()
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@ -408,7 +410,7 @@ mod17_def = def + stm32f405_def + {'PLATFORM_MOD17': ''}
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linux_c_args = ['-ffunction-sections', '-fdata-sections', '-DPLATFORM_LINUX']
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linux_cpp_args = ['-ffunction-sections', '-fdata-sections', '-std=c++14', '-DPLATFORM_LINUX']
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linux_l_args = ['-lm', '-lreadline', '-lpulse-simple', '-Wl,--gc-sections']
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linux_l_args = ['-lm', '-lreadline', '-lpulse-simple', '-Wl,--gc-sections', '-Wl,-Map,main.map']
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# Add AddressSanitizer if required
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if get_option('asan')
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@ -0,0 +1,102 @@
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/***************************************************************************
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* Copyright (C) 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#define _XOPEN_SOURCE 600
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "pty.h"
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static int pty_init(const struct chardev *dev)
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{
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int ptyFd = posix_openpt(O_RDWR);
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if(ptyFd < 0)
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return errno;
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int rc = grantpt(ptyFd);
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if (rc != 0)
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return errno;
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rc = unlockpt(ptyFd);
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if (rc != 0)
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return errno;
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printf("Successfully open pseudoTTY on %s\n", ptsname(ptyFd));
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*((int *)dev->data) = ptyFd;
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return 0;
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}
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static int pty_terminate(const struct chardev *dev)
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{
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int ptyFd = *((int *)dev->data);
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if(ptyFd < 0)
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return -ENOENT;
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close(ptyFd);
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*((int *)dev->data) = -1;
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return 0;
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}
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static ssize_t pty_read(const struct chardev *dev, void *data, const size_t len)
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{
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int ptyFd = *((int *)dev->data);
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if(ptyFd < 0)
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return -ENOENT;
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return read(ptyFd, data, len);
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}
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static ssize_t pty_write(const struct chardev *dev, const void *data,
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const size_t len)
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{
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int ptyFd = *((int *)dev->data);
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if(ptyFd < 0)
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return -ENOENT;
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return write(ptyFd, data, len);
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}
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static int pty_ioctl(const struct chardev *dev, const int cmd, const void *arg)
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{
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(void) dev;
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(void) cmd;
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(void) arg;
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return 0;
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}
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const struct chardev_api pty_chardev_api =
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{
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.init = &pty_init,
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.terminate = &pty_terminate,
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.read = &pty_read,
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.write = &pty_write,
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.ioctl = &pty_ioctl
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};
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@ -0,0 +1,48 @@
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/***************************************************************************
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* Copyright (C) 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef PTY_H
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#define PTY_H
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#include <interfaces/chardev.h>
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/**
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* Set up a linux PTY character device.
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* This macro instantiates and initializes the data structures for a PTY character
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* device.
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*
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* @param name: device name.
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*/
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#define CHARDEV_PTY_DEFINE(name) \
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static int data_##name; \
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struct chardev name = \
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{ \
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.config = NULL, \
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.data = &data_##name, \
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.api = &pty_chardev_api \
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};
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/**
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* Character device API definition for linux PTY.
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*/
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extern const struct chardev_api pty_chardev_api;
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#endif
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