add circuitpython code

1 files changed, 127 insertions, 0 deletions

diff --git a/circuitpython/shared-bindings/canio/Match.c b/circuitpython/shared-bindings/canio/Match.c
new file mode 100644
index 0000000..52262b0
--- /dev/null
+++ b/circuitpython/shared-bindings/canio/Match.c
@@ -0,0 +1,127 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Jeff Epler for Adafruit Industries
+ *
+ * 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 "shared-bindings/canio/Match.h"
+
+#include "py/objproperty.h"
+#include "py/runtime.h"
+
+//| class Match:
+//|     """Describe CAN bus messages to match"""
+//|
+//|
+//|     def __init__(self, id: int, *, mask: Optional[int] = None, extended: bool = False) -> None:
+//|         """Construct a Match with the given properties.
+//|
+//|         If mask is not None, then the filter is for any id which matches all
+//|         the nonzero bits in mask. Otherwise, it matches exactly the given id.
+//|         If extended is true then only extended ids are matched, otherwise
+//|         only standard ids are matched."""
+//|
+
+STATIC mp_obj_t canio_match_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    enum { ARG_id, ARG_mask, ARG_extended, NUM_ARGS };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_id, MP_ARG_INT | MP_ARG_REQUIRED },
+        { MP_QSTR_mask, MP_ARG_OBJ, {.u_obj = mp_const_none } },
+        { MP_QSTR_extended, MP_ARG_BOOL, {.u_bool = false} },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    MP_STATIC_ASSERT(MP_ARRAY_SIZE(allowed_args) == NUM_ARGS);
+
+    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    int id_bits = args[ARG_extended].u_bool ? 0x1fffffff : 0x7ff;
+    int id = args[ARG_id].u_int;
+    int mask = args[ARG_mask].u_obj == mp_const_none ?  id_bits : mp_obj_get_int(args[ARG_mask].u_obj);
+
+    if (id & ~id_bits) {
+        mp_raise_ValueError_varg(translate("%q out of range"), MP_QSTR_id);
+    }
+
+    if (mask & ~id_bits) {
+        mp_raise_ValueError_varg(translate("%q out of range"), MP_QSTR_mask);
+    }
+
+    canio_match_obj_t *self = m_new_obj(canio_match_obj_t);
+    self->base.type = &canio_match_type;
+    common_hal_canio_match_construct(self, id, mask, args[ARG_extended].u_bool);
+    return self;
+}
+
+//|     id: int
+//|     """The id to match"""
+//|
+
+STATIC mp_obj_t canio_match_id_get(mp_obj_t self_in) {
+    canio_match_obj_t *self = self_in;
+    return MP_OBJ_NEW_SMALL_INT(common_hal_canio_match_get_id(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(canio_match_id_get_obj, canio_match_id_get);
+
+MP_PROPERTY_GETTER(canio_match_id_obj,
+    (mp_obj_t)&canio_match_id_get_obj);
+
+//|
+//|     mask: int
+//|     """The optional mask of ids to match"""
+//|
+
+STATIC mp_obj_t canio_match_mask_get(mp_obj_t self_in) {
+    canio_match_obj_t *self = self_in;
+    return MP_OBJ_NEW_SMALL_INT(common_hal_canio_match_get_mask(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(canio_match_mask_get_obj, canio_match_mask_get);
+
+MP_PROPERTY_GETTER(canio_match_mask_obj,
+    (mp_obj_t)&canio_match_mask_get_obj);
+
+//|     extended: bool
+//|     """True to match extended ids, False to match standard ides"""
+//|
+
+STATIC mp_obj_t canio_match_extended_get(mp_obj_t self_in) {
+    canio_match_obj_t *self = self_in;
+    return mp_obj_new_bool(common_hal_canio_match_get_extended(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(canio_match_extended_get_obj, canio_match_extended_get);
+
+MP_PROPERTY_GETTER(canio_match_extended_obj,
+    (mp_obj_t)&canio_match_extended_get_obj);
+
+STATIC const mp_rom_map_elem_t canio_match_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_id), MP_ROM_PTR(&canio_match_id_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mask), MP_ROM_PTR(&canio_match_mask_obj) },
+    { MP_ROM_QSTR(MP_QSTR_extended), MP_ROM_PTR(&canio_match_extended_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(canio_match_locals_dict, canio_match_locals_dict_table);
+
+const mp_obj_type_t canio_match_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_Match,
+    .make_new = canio_match_make_new,
+    .locals_dict = (mp_obj_dict_t *)&canio_match_locals_dict,
+};