micropython/ports/samd/machine_led.c

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