1 files changed, 150 insertions, 0 deletions
diff --git a/ports/unix/modtermios.c b/ports/unix/modtermios.c
new file mode 100644
index 000000000..fe19aac83
--- /dev/null
+++ b/ports/unix/modtermios.c
@@ -0,0 +1,150 @@
+/*
+ * This file is part of the MicroPython 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 "py/objlist.h"
+#include "py/runtime.h"
+#include "py/mphal.h"
+
+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_TO_PTR(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_TO_PTR(mp_obj_new_list(NCCS, NULL));
+    r->items[6] = MP_OBJ_FROM_PTR(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 no way unicode chars could be there, if c_cc is defined to be a
+            // a "char". But it's type is actually cc_t, which can be anything.
+            // TODO: For now, we still deal with it like that.
+            cc->items[i] = mp_obj_new_bytes((byte*)&term.c_cc[i], 1);
+        }
+    }
+    return MP_OBJ_FROM_PTR(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);
+    if (when == 0) {
+        // We don't export TCSANOW and friends to save on code space. Then
+        // common lazy sense says that passing 0 should be godo enough, and
+        // it is e.g. for glibc. But for other libc's it's not, so set just
+        // treat 0 as defauling to TCSANOW.
+        when = TCSANOW;
+    }
+
+    assert(MP_OBJ_IS_TYPE(attrs_in, &mp_type_list));
+    mp_obj_list_t *attrs = MP_OBJ_TO_PTR(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 = MP_OBJ_TO_PTR(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 {
+            term.c_cc[i] = *mp_obj_str_get_str(cc->items[i]);
+        }
+    }
+
+    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_rom_map_elem_t mp_module_termios_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_termios) },
+    { MP_ROM_QSTR(MP_QSTR_tcgetattr), MP_ROM_PTR(&mod_termios_tcgetattr_obj) },
+    { MP_ROM_QSTR(MP_QSTR_tcsetattr), MP_ROM_PTR(&mod_termios_tcsetattr_obj) },
+    { MP_ROM_QSTR(MP_QSTR_setraw), MP_ROM_PTR(&mod_termios_setraw_obj) },
+
+#define C(name) { MP_ROM_QSTR(MP_QSTR_ ## name), MP_ROM_INT(name) }
+    C(TCSANOW),
+
+    C(B9600),
+    #ifdef B57600
+    C(B57600),
+    #endif
+    #ifdef B115200
+    C(B115200),
+    #endif
+#undef C
+};
+
+STATIC MP_DEFINE_CONST_DICT(mp_module_termios_globals, mp_module_termios_globals_table);
+
+const mp_obj_module_t mp_module_termios = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&mp_module_termios_globals,
+};