kopia lustrzana https://github.com/micropython/micropython
147 wiersze
5.2 KiB
C
147 wiersze
5.2 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Paul Sokolovsky
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <termios.h>
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#include <unistd.h>
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#include <errno.h>
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#include "mpconfig.h"
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#include "misc.h"
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#include "nlr.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime.h"
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#include "objlist.h"
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#define RAISE_ERRNO(err_flag, error_val) \
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{ if (err_flag == -1) \
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{ nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(error_val))); } }
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STATIC mp_obj_t mod_termios_tcgetattr(mp_obj_t fd_in) {
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struct termios term;
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int fd = mp_obj_get_int(fd_in);
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int res = tcgetattr(fd, &term);
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RAISE_ERRNO(res, errno);
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mp_obj_list_t *r = mp_obj_new_list(7, NULL);
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r->items[0] = MP_OBJ_NEW_SMALL_INT(term.c_iflag);
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r->items[1] = MP_OBJ_NEW_SMALL_INT(term.c_oflag);
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r->items[2] = MP_OBJ_NEW_SMALL_INT(term.c_cflag);
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r->items[3] = MP_OBJ_NEW_SMALL_INT(term.c_lflag);
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r->items[4] = MP_OBJ_NEW_SMALL_INT(cfgetispeed(&term));
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r->items[5] = MP_OBJ_NEW_SMALL_INT(cfgetospeed(&term));
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mp_obj_list_t *cc = mp_obj_new_list(NCCS, NULL);
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r->items[6] = cc;
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for (int i = 0; i < NCCS; i++) {
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if (i == VMIN || i == VTIME) {
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cc->items[i] = MP_OBJ_NEW_SMALL_INT(term.c_cc[i]);
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} else {
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// https://docs.python.org/3/library/termios.html says value is *string*,
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// but no way unicode chars could be there.
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cc->items[i] = mp_obj_new_bytes(&term.c_cc[i], 1);
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}
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}
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return r;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_termios_tcgetattr_obj, mod_termios_tcgetattr);
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STATIC mp_obj_t mod_termios_tcsetattr(mp_obj_t fd_in, mp_obj_t when_in, mp_obj_t attrs_in) {
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struct termios term;
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int fd = mp_obj_get_int(fd_in);
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int when = mp_obj_get_int(when_in);
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assert(MP_OBJ_IS_TYPE(attrs_in, &mp_type_list));
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mp_obj_list_t *attrs = attrs_in;
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term.c_iflag = mp_obj_get_int(attrs->items[0]);
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term.c_oflag = mp_obj_get_int(attrs->items[1]);
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term.c_cflag = mp_obj_get_int(attrs->items[2]);
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term.c_lflag = mp_obj_get_int(attrs->items[3]);
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mp_obj_list_t *cc = attrs->items[6];
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for (int i = 0; i < NCCS; i++) {
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if (i == VMIN || i == VTIME) {
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term.c_cc[i] = mp_obj_get_int(cc->items[i]);
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} else {
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mp_uint_t len;
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term.c_cc[i] = *mp_obj_str_get_data(cc->items[i], &len);
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}
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}
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int res = cfsetispeed(&term, mp_obj_get_int(attrs->items[4]));
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RAISE_ERRNO(res, errno);
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res = cfsetispeed(&term, mp_obj_get_int(attrs->items[5]));
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RAISE_ERRNO(res, errno);
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res = tcsetattr(fd, when, &term);
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RAISE_ERRNO(res, errno);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_termios_tcsetattr_obj, mod_termios_tcsetattr);
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STATIC mp_obj_t mod_termios_setraw(mp_obj_t fd_in) {
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struct termios term;
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int fd = mp_obj_get_int(fd_in);
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int res = tcgetattr(fd, &term);
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RAISE_ERRNO(res, errno);
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term.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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term.c_oflag = 0;
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term.c_cflag = (term.c_cflag & ~(CSIZE | PARENB)) | CS8;
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term.c_lflag = 0;
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term.c_cc[VMIN] = 1;
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term.c_cc[VTIME] = 0;
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res = tcsetattr(fd, TCSAFLUSH, &term);
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RAISE_ERRNO(res, errno);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_termios_setraw_obj, mod_termios_setraw);
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STATIC const mp_map_elem_t mp_module_termios_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_termios) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_tcgetattr), (mp_obj_t)&mod_termios_tcgetattr_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_tcsetattr), (mp_obj_t)&mod_termios_tcsetattr_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_setraw), (mp_obj_t)&mod_termios_setraw_obj },
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#define C(name) { MP_OBJ_NEW_QSTR(MP_QSTR_ ## name), MP_OBJ_NEW_SMALL_INT(name) }
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C(TCSANOW),
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C(B9600),
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C(B57600),
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C(B115200),
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#undef C
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_termios_globals, mp_module_termios_globals_table);
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const mp_obj_module_t mp_module_termios = {
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.base = { &mp_type_module },
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.name = MP_QSTR_termios,
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.globals = (mp_obj_dict_t*)&mp_module_termios_globals,
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};
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