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Diffstat (limited to 'unix/modtermios.c')
| -rw-r--r-- | unix/modtermios.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/unix/modtermios.c b/unix/modtermios.c new file mode 100644 index 0000000000..b705303556 --- /dev/null +++ b/unix/modtermios.c @@ -0,0 +1,155 @@ +/* + * This file is part of the Micro Python project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2014 Paul Sokolovsky + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include <sys/types.h> +#include <termios.h> +#include <unistd.h> +#include <errno.h> + +#include "mpconfig.h" +#include "misc.h" +#include "nlr.h" +#include "qstr.h" +#include "obj.h" +#include "runtime.h" +#include "objlist.h" + +#define RAISE_ERRNO(err_flag, error_val) \ + { if (err_flag == -1) \ + { nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(error_val))); } } + +STATIC mp_obj_t mod_termios_tcgetattr(mp_obj_t fd_in) { + struct termios term; + int fd = mp_obj_get_int(fd_in); + + int res = tcgetattr(fd, &term); + RAISE_ERRNO(res, errno); + + mp_obj_list_t *r = mp_obj_new_list(7, NULL); + r->items[0] = MP_OBJ_NEW_SMALL_INT(term.c_iflag); + r->items[1] = MP_OBJ_NEW_SMALL_INT(term.c_oflag); + r->items[2] = MP_OBJ_NEW_SMALL_INT(term.c_cflag); + r->items[3] = MP_OBJ_NEW_SMALL_INT(term.c_lflag); + r->items[4] = MP_OBJ_NEW_SMALL_INT(cfgetispeed(&term)); + r->items[5] = MP_OBJ_NEW_SMALL_INT(cfgetospeed(&term)); + + mp_obj_list_t *cc = mp_obj_new_list(NCCS, NULL); + r->items[6] = cc; + for (int i = 0; i < NCCS; i++) { + if (i == VMIN || i == VTIME) { + cc->items[i] = MP_OBJ_NEW_SMALL_INT(term.c_cc[i]); + } else { + // https://docs.python.org/3/library/termios.html says value is *string*, + // but now way unicode chars could be there. + cc->items[i] = mp_obj_new_bytes(&term.c_cc[i], 1); + } + } + return r; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_termios_tcgetattr_obj, mod_termios_tcgetattr); + +STATIC mp_obj_t mod_termios_tcsetattr(mp_obj_t fd_in, mp_obj_t when_in, mp_obj_t attrs_in) { + struct termios term; + int fd = mp_obj_get_int(fd_in); + int when = mp_obj_get_int(when_in); + assert(MP_OBJ_IS_TYPE(attrs_in, &mp_type_list)); + mp_obj_list_t *attrs = attrs_in; + + term.c_iflag = mp_obj_get_int(attrs->items[0]); + term.c_oflag = mp_obj_get_int(attrs->items[1]); + term.c_cflag = mp_obj_get_int(attrs->items[2]); + term.c_lflag = mp_obj_get_int(attrs->items[3]); + + mp_obj_list_t *cc = attrs->items[6]; + for (int i = 0; i < NCCS; i++) { + if (i == VMIN || i == VTIME) { + term.c_cc[i] = mp_obj_get_int(cc->items[i]); + } else { + uint len; + term.c_cc[i] = *mp_obj_str_get_data(cc->items[i], &len); + } + } + + int res = cfsetispeed(&term, mp_obj_get_int(attrs->items[4])); + RAISE_ERRNO(res, errno); + res = cfsetispeed(&term, mp_obj_get_int(attrs->items[5])); + RAISE_ERRNO(res, errno); + + res = tcsetattr(fd, when, &term); + RAISE_ERRNO(res, errno); + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_termios_tcsetattr_obj, mod_termios_tcsetattr); + +STATIC mp_obj_t mod_termios_setraw(mp_obj_t fd_in) { + struct termios term; + int fd = mp_obj_get_int(fd_in); + int res = tcgetattr(fd, &term); + RAISE_ERRNO(res, errno); + + term.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON); + term.c_oflag = 0; + term.c_cflag = (term.c_cflag & ~(CSIZE | PARENB)) | CS8; + term.c_lflag = 0; + term.c_cc[VMIN] = 1; + term.c_cc[VTIME] = 0; + res = tcsetattr(fd, TCSAFLUSH, &term); + RAISE_ERRNO(res, errno); + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_termios_setraw_obj, mod_termios_setraw); + +STATIC const mp_map_elem_t mp_module_termios_globals_table[] = { + { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_termios) }, + { MP_OBJ_NEW_QSTR(MP_QSTR_tcgetattr), (mp_obj_t)&mod_termios_tcgetattr_obj }, + { MP_OBJ_NEW_QSTR(MP_QSTR_tcsetattr), (mp_obj_t)&mod_termios_tcsetattr_obj }, + { MP_OBJ_NEW_QSTR(MP_QSTR_setraw), (mp_obj_t)&mod_termios_setraw_obj }, + +#define C(name) { MP_OBJ_NEW_QSTR(MP_QSTR_ ## name), MP_OBJ_NEW_SMALL_INT(name) } + C(TCSANOW), + + C(B9600), + C(B57600), + C(B115200), +#undef C +}; + +STATIC const mp_obj_dict_t mp_module_termios_globals = { + .base = {&mp_type_dict}, + .map = { + .all_keys_are_qstrs = 1, + .table_is_fixed_array = 1, + .used = MP_ARRAY_SIZE(mp_module_termios_globals_table), + .alloc = MP_ARRAY_SIZE(mp_module_termios_globals_table), + .table = (mp_map_elem_t*)mp_module_termios_globals_table, + }, +}; + +const mp_obj_module_t mp_module_termios = { + .base = { &mp_type_module }, + .name = MP_QSTR_termios, + .globals = (mp_obj_dict_t*)&mp_module_termios_globals, +}; |