280374fa63
While it is traditional to have buttons on pins that are pulled up, and have the button connect them to the ground, some CircuitPython boards (notably the CPX) have the button pins pulled low and the button connects them to VCC. This patch makes the gamepad only change the pin's pull if it wasn't already set when passed to the constructor, and also makes it consider a button pressed when its value is the opposite of its pull.
58 lines
2.1 KiB
C
58 lines
2.1 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 Radomir Dopieralski for Adafruit Industries
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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 <stdbool.h>
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#include "__init__.h"
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#include "GamePad.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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void gamepad_tick(void) {
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if (!gamepad_singleton) {
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return;
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}
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uint8_t gamepad_current = 0;
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for (int i=0; i<8; ++i) {
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digitalio_digitalinout_obj_t* pin = gamepad_singleton->pins[i];
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if (!pin) {
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break;
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}
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digitalio_pull_t pull = common_hal_digitalio_digitalinout_get_pull(pin);
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bool value = common_hal_digitalio_digitalinout_get_value(pin);
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if ((pull == PULL_UP && !value) || (pull == PULL_DOWN && value)) {
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gamepad_current |= 1 << i;
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}
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}
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gamepad_singleton->pressed |= gamepad_singleton->last & gamepad_current;
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gamepad_singleton->last = gamepad_current;
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}
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void gamepad_reset(void) {
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gamepad_singleton = NULL;
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}
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