【发布时间】：2020-10-06 19:25:11
【问题描述】：
我正在使用 arduino pro micro 在操纵杆上制作游戏手柄。
从控制台输入上下等命令，树莓派的gpio会输出，arduino会接收并输入到游戏机。
我使用 ArduinoJoystickLibrary。 https://github.com/MHeironimus/ArduinoJoystickLibrary
我想玩 GBA 游戏，但 Dpad 一直在输入。 我怎样才能只按一次向上键？
另外，在下面的gif中，向上和向下键一次按一次，但按右键或中间的其他键没有反应。
作为附录，我使用了一个叫做复古怪胎的游戏机。 retro freak
代码使用如下
arduino_pro_micro_gamepad.ino
#include <Joystick.h>
#define OFFSET_BUTTON 2
#define OFFSET_DPAD 18
Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,JOYSTICK_TYPE_GAMEPAD,
4, 0, // Button Count, Hat Switch Count
true, true, false, // X and Y, but no Z Axis
false, false, false, // No Rx, Ry, or Rz
false, false, // No rudder or throttle
false, false, false); // No accelerator, brake, or steering
void setup() {
// Initialize Button Pins
pinMode(2, INPUT_PULLUP); // Button 1
pinMode(3, INPUT_PULLUP); // Button 2
pinMode(4, INPUT_PULLUP); // Button 3
pinMode(5, INPUT_PULLUP); // Button 3
pinMode(18, INPUT_PULLUP); // D-pad Up
pinMode(19, INPUT_PULLUP); // D-pad Right
pinMode(20, INPUT_PULLUP); // D-pad Down
pinMode(21, INPUT_PULLUP); // D-pad Left
Joystick.begin();
Joystick.setXAxisRange(-1, 1);
Joystick.setYAxisRange(-1, 1);
Joystick.setYAxis(0);
Joystick.setYAxis(0);
}
// Last state of the buttons
int lastDpadState[4] = {0,0,0,0}; // Up, Right, Down, Left
int lastButtonState[4] = {0,0,0,0}; // Button 1 - 4
void updateDpad() {
for (int i = 0; i <= 3; i++) {
int currentDpadState = digitalRead(i + OFFSET_DPAD);
if (currentDpadState != lastDpadState[i]) {
switch (i) {
case 0: // UP
if (currentDpadState == 1) {
Joystick.setYAxis(-1);
}
break;
case 1: // RIGHT
if (currentDpadState == 1) {
Joystick.setXAxis(1);
}
break;
case 2: // DOWN
if (currentDpadState == 1) {
Joystick.setYAxis(1);
}
break;
case 3: // LEFT
if (currentDpadState == 1) {
Joystick.setXAxis(-1);
}
break;
}
lastDpadState[i] = currentDpadState;
}
}
}
void updateButton() {
for (int i = 0; i <= 3; i++) {
int currentButtonState = !digitalRead(i + OFFSET_BUTTON);
if (currentButtonState != lastButtonState[i]) {
Joystick.setButton(i, currentButtonState);
lastButtonState[i] = currentButtonState;
}
}
}
void loop() {
updateDpad();
updateButton();
delay(5);
}
raspi_game_input.py
import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(27, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(23, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(24, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(16, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(20, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(21, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(26, GPIO.OUT, initial=GPIO.HIGH)
def on(gpio_number):
GPIO.output(gpio_number, GPIO.LOW)
sleep(0.05)
GPIO.output(gpio_number, GPIO.HIGH)
def key_select(input_key):
if input_key == 'a':
on(17)
elif input_key == 'b':
on(27)
elif input_key == 'home':
on(23)
elif input_key == 'game':
on(24)
elif input_key == 'u':
on(16)
elif input_key == 'd':
on(20)
elif input_key == 'r':
on(21)
elif input_key == 'l':
on(26)
else:
pass
if __name__ == '__main__':
try:
while True:
print('push button')
key = input()
print(f'input is ${key}')
key_select(key)
except KeyboardInterrupt:
GPIO.cleanup()
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