kopia lustrzana https://github.com/micropython/micropython
173 wiersze
6.4 KiB
C
173 wiersze
6.4 KiB
C
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/*
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* This 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) 2016-2021 Damien P. George
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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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* Uses pins.h & pins.c to create board (MCU package) specific 'machine_led_obj' array.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "extmod/virtpin.h"
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#include "modmachine.h"
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#include "pins.h" // boards/<BOARD>/
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// ASF4 (MCU package specific pin defs in 'boards')
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#include "hal_gpio.h"
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#include "hpl_gpio.h"
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#include "hal_atomic.h"
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STATIC void machine_led_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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machine_led_obj_t *self = self_in;
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mp_printf(print, "LED(%u)", self->id);
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}
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// LED.init(mode, *, value=None)
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STATIC mp_obj_t machine_led_obj_init_helper(const machine_led_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_mode, ARG_value };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_mode, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
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{ MP_QSTR_value, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
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};
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// parse args
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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// set initial value (do this before configuring mode/pull)
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if (args[ARG_value].u_obj != mp_const_none) {
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gpio_set_pin_level(self->id, mp_obj_is_true(args[ARG_value].u_obj));
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}
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// configure mode
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gpio_set_pin_direction(self->id, GPIO_DIRECTION_OUT);
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return mp_const_none;
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}
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// constructor(id, ...)
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mp_obj_t mp_led_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
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// get the wanted LED object
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int wanted_led = mp_obj_get_int(args[0]);
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const machine_led_obj_t *self = NULL;
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if (0 <= wanted_led && wanted_led < MP_ARRAY_SIZE(machine_led_obj)) {
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self = (machine_led_obj_t *)&machine_led_obj[wanted_led];
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}
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// the array could be padded with 'nulls' (see other Ports).
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// Will also error if the asked for LED (index) is greater than the array row size.
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if (self == NULL || self->base.type == NULL) {
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mp_raise_ValueError(MP_ERROR_TEXT("invalid LED"));
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}
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if (n_args > 1 || n_kw > 0) {
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// mode given, so configure this GPIO
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mp_map_t kw_args;
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mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
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machine_led_obj_init_helper(self, n_args - 1, args + 1, &kw_args);
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}
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return MP_OBJ_FROM_PTR(self);
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}
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// fast method for getting/setting pin value
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STATIC mp_obj_t machine_led_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 0, 1, false);
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machine_led_obj_t *self = self_in;
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if (n_args == 0) {
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// get pin
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return MP_OBJ_NEW_SMALL_INT(gpio_get_pin_level(self->id));
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} else {
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// set pin
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bool value = mp_obj_is_true(args[0]);
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gpio_set_pin_level(self->id, value);
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return mp_const_none;
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}
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}
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// pin.init(mode)
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STATIC mp_obj_t machine_led_obj_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
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return machine_led_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(machine_led_init_obj, 1, machine_led_obj_init);
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// pin.value([value])
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STATIC mp_obj_t machine_led_value(size_t n_args, const mp_obj_t *args) {
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return machine_led_call(args[0], n_args - 1, 0, args + 1);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_led_value_obj, 1, 2, machine_led_value);
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// pin.low()
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STATIC mp_obj_t machine_led_low(mp_obj_t self_in) {
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machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
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gpio_set_pin_direction(self->id, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(self->id, false);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_led_low_obj, machine_led_low);
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// pin.high()
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STATIC mp_obj_t machine_led_high(mp_obj_t self_in) {
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machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
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gpio_set_pin_direction(self->id, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(self->id, true);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_led_high_obj, machine_led_high);
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// pin.toggle()
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STATIC mp_obj_t machine_led_toggle(mp_obj_t self_in) {
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machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
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gpio_set_pin_direction(self->id, GPIO_DIRECTION_OUT);
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gpio_toggle_pin_level(self->id);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_led_toggle_obj, machine_led_toggle);
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STATIC const mp_rom_map_elem_t machine_led_locals_dict_table[] = {
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// instance methods
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{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_led_init_obj) },
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{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&machine_led_value_obj) },
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{ MP_ROM_QSTR(MP_QSTR_low), MP_ROM_PTR(&machine_led_low_obj) },
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{ MP_ROM_QSTR(MP_QSTR_high), MP_ROM_PTR(&machine_led_high_obj) },
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{ MP_ROM_QSTR(MP_QSTR_off), MP_ROM_PTR(&machine_led_low_obj) },
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{ MP_ROM_QSTR(MP_QSTR_on), MP_ROM_PTR(&machine_led_high_obj) },
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{ MP_ROM_QSTR(MP_QSTR_toggle), MP_ROM_PTR(&machine_led_toggle_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_led_locals_dict, machine_led_locals_dict_table);
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const mp_obj_type_t machine_led_type = {
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{ &mp_type_type },
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.name = MP_QSTR_LED,
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.print = machine_led_print,
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.make_new = mp_led_make_new,
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.call = machine_led_call,
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.locals_dict = (mp_obj_t)&machine_led_locals_dict,
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};
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