58 lines
2.2 KiB
C
58 lines
2.2 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) 2019 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-module/gamepadshift/__init__.h"
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#include "py/mpstate.h"
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#include "shared-bindings/gamepadshift/GamePadShift.h"
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void gamepadshift_tick(void) {
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void *singleton = MP_STATE_VM(gamepad_singleton);
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if (singleton == NULL || !mp_obj_is_type(MP_OBJ_FROM_PTR(singleton), &gamepadshift_type)) {
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return;
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}
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gamepadshift_obj_t *self = MP_OBJ_TO_PTR(singleton);
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uint8_t current = 0;
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uint8_t bit = 1;
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common_hal_digitalio_digitalinout_set_value(self->latch_pin, 1);
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for (int i = 0; i < 8; ++i) {
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common_hal_digitalio_digitalinout_set_value(self->clock_pin, 0);
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if (common_hal_digitalio_digitalinout_get_value(self->data_pin)) {
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current |= bit;
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}
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common_hal_digitalio_digitalinout_set_value(self->clock_pin, 1);
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bit <<= 1;
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}
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common_hal_digitalio_digitalinout_set_value(self->latch_pin, 0);
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self->pressed |= self->last & current;
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self->last = current;
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}
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void gamepadshift_reset(void) {
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MP_STATE_VM(gamepad_singleton) = NULL;
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}
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