124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/*
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* This file is part of the MicroPython 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) 2016 Scott Shawcroft
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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 "shared-bindings/board/__init__.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "py/nlr.h"
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "supervisor/shared/translate.h"
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//| class Pin:
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//| """Identifies an IO pin on the microcontroller."""
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//|
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//| def __init__(self, ):
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//| """Identifies an IO pin on the microcontroller. They are fixed by the
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//| hardware so they cannot be constructed on demand. Instead, use
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//| `board` or `microcontroller.pin` to reference the desired pin."""
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//| ...
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//|
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static void get_pin_name(const mcu_pin_obj_t *self, qstr* package, qstr* module, qstr* name) {
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const mp_map_t* board_map = &board_module_globals.map;
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for (uint8_t i = 0; i < board_map->alloc; i++) {
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if (board_map->table[i].value == self) {
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*package = 0;
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*module = MP_QSTR_board;
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*name = MP_OBJ_QSTR_VALUE(board_map->table[i].key);
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return;
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}
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}
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const mp_map_t* mcu_map = &mcu_pin_globals.map;
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for (uint8_t i = 0; i < mcu_map->alloc; i++) {
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if (mcu_map->table[i].value == self) {
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*package = MP_QSTR_microcontroller;
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*module = MP_QSTR_pin;
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*name = MP_OBJ_QSTR_VALUE(mcu_map->table[i].key);
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return;
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}
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}
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}
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STATIC void mcu_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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mcu_pin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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qstr package;
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qstr module;
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qstr name;
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get_pin_name(self, &package, &module, &name);
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mp_printf(print, "%q.%q.%q", MP_QSTR_microcontroller, MP_QSTR_pin, name);
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}
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const mp_obj_type_t mcu_pin_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Pin,
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.print = mcu_pin_print
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};
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mcu_pin_obj_t *validate_obj_is_pin(mp_obj_t obj) {
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if (!MP_OBJ_IS_TYPE(obj, &mcu_pin_type)) {
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mp_raise_TypeError_varg(translate("Expected a %q"), mcu_pin_type.name);
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}
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return MP_OBJ_TO_PTR(obj);
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}
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// Validate that the obj is a pin or None. Return an mcu_pin_obj_t* or NULL, correspondingly.
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mcu_pin_obj_t *validate_obj_is_pin_or_none(mp_obj_t obj) {
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if (obj == mp_const_none) {
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return NULL;
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}
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return validate_obj_is_pin(obj);
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}
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mcu_pin_obj_t *validate_obj_is_free_pin(mp_obj_t obj) {
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mcu_pin_obj_t *pin = validate_obj_is_pin(obj);
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assert_pin_free(pin);
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return pin;
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}
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// Validate that the obj is a free pin or None. Return an mcu_pin_obj_t* or NULL, correspondingly.
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mcu_pin_obj_t *validate_obj_is_free_pin_or_none(mp_obj_t obj) {
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if (obj == mp_const_none) {
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return NULL;
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}
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mcu_pin_obj_t *pin = validate_obj_is_pin(obj);
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assert_pin_free(pin);
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return pin;
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}
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void assert_pin_free(const mcu_pin_obj_t* pin) {
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if (pin != NULL && pin != MP_OBJ_TO_PTR(mp_const_none) && !common_hal_mcu_pin_is_free(pin)) {
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qstr package;
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qstr module;
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qstr name;
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get_pin_name(pin, &package, &module, &name);
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mp_raise_ValueError_varg(translate("%q in use"), name);
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}
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}
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