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