You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/**
|
|
* buttons.c - Provides ability to read button state.
|
|
* Copyright (C) 2020 Clyne Sullivan
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
* See the GNU General Public License for more details.
|
|
*/
|
|
|
|
#include "buttons.h"
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
unsigned char button_state = 0;
|
|
|
|
static void buttonStateHandler(void *arg)
|
|
{
|
|
int pad = (unsigned int)arg & 0xFF;
|
|
int bit = 1 << ((unsigned int)arg >> 8);
|
|
|
|
if (!palReadPad(GPIOA, pad)) {
|
|
if ((button_state & bit) != bit)
|
|
button_state |= bit;
|
|
} else {
|
|
if ((button_state & bit) == bit)
|
|
button_state &= ~(bit);
|
|
}
|
|
}
|
|
|
|
void buttons_init()
|
|
{
|
|
palSetPadMode(GPIOA, 0, PAL_MODE_INPUT_PULLUP); // Joy A (UL)
|
|
palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_PULLUP); // Joy B (UR)
|
|
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLUP); // Joy C (DR)
|
|
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_PULLUP); // Joy D (DL)
|
|
palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_PULLUP); // Joy button
|
|
palSetPadMode(GPIOA, 7, PAL_MODE_INPUT_PULLUP); // Button 1
|
|
palSetPadMode(GPIOA, 9, PAL_MODE_INPUT_PULLUP); // Button 2
|
|
palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLUP); // Button 3
|
|
palEnablePadEvent(GPIOA, 0, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 1, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 2, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 3, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 6, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 7, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 9, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palEnablePadEvent(GPIOA, 10, PAL_EVENT_MODE_BOTH_EDGES);
|
|
palSetPadCallback(GPIOA, 0, buttonStateHandler, (void *)0x0700);
|
|
palSetPadCallback(GPIOA, 1, buttonStateHandler, (void *)0x0601);
|
|
palSetPadCallback(GPIOA, 2, buttonStateHandler, (void *)0x0502);
|
|
palSetPadCallback(GPIOA, 3, buttonStateHandler, (void *)0x0403);
|
|
palSetPadCallback(GPIOA, 6, buttonStateHandler, (void *)0x0306);
|
|
palSetPadCallback(GPIOA, 7, buttonStateHandler, (void *)0x0207);
|
|
palSetPadCallback(GPIOA, 9, buttonStateHandler, (void *)0x0109);
|
|
palSetPadCallback(GPIOA, 10, buttonStateHandler, (void *)0x000A);
|
|
}
|
|
|