arduino 操纵杆库，不要停止操纵杆
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【中文标题】arduino 操纵杆库，不要停止操纵杆【英文标题】：arduino joystick library, don't stop joystick 【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()
【问题讨论】：
【参考方案1】：在 setup() 中的代码中稍作修正；
Joystick.setYAxis(0);
Joystick.setYAxis(0);
改为：
Joystick.setXAxis(0);
Joystick.setYAxis(0);
尝试在操作之前或之后重置为初始值。
if (currentDpadState != lastDpadState[i])
reset();
switch (i)
...
void reset()
Joystick.setXAxis(0);
Joystick.setYAxis(0);
【讨论】：
【参考方案2】：我的问题是使用操纵杆而不是 hatSwitch。
我想要的实现是只输入一次方向键，所以我使用了hatswitch。
#include <Joystick.h>
#define OFFSET_BUTTON 2
#define OFFSET_DPAD 18
Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,
JOYSTICK_TYPE_GAMEPAD,
9,1,
false, false, false, false, false, false,
false, false, false, false, false);
void setup()
pinMode(2, INPUT_PULLUP); // Button 1
pinMode(3, INPUT_PULLUP); // Button 2
pinMode(4, INPUT_PULLUP); // Button 3
pinMode(5, INPUT_PULLUP); // Button 4
pinMode(6, INPUT_PULLUP); // Button 5
pinMode(7, INPUT_PULLUP); // Button 6
pinMode(8, INPUT_PULLUP); // Button 7
pinMode(9, INPUT_PULLUP); // Button 8
pinMode(10, INPUT_PULLUP); // Button 9
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();
// Last state of the pins
int lastDpadState[2][4] = 0,0,0,0, 0,0,0,0;
int lastButtonState[10] = 0,0,0,0,0,0,0,0,0,0; // Button 1 - 10
void updateDpad()
bool valueChanged[2] = false, false;
int currentPin = 18;
// Read pin values
for (int hatSwitch = 0; hatSwitch < 2; hatSwitch++)
for (int index = 0; index < 4; index++)
int currentDpadState = !digitalRead(currentPin++);
if (currentDpadState != lastDpadState[hatSwitch][index])
valueChanged[hatSwitch] = true;
lastDpadState[hatSwitch][index] = currentDpadState;
for (int hatSwitch = 0; hatSwitch < 2; hatSwitch++)
if (valueChanged[hatSwitch])
if ((lastDpadState[hatSwitch][0] == 0)
&& (lastDpadState[hatSwitch][1] == 0)
&& (lastDpadState[hatSwitch][2] == 0)
&& (lastDpadState[hatSwitch][3] == 0))
Joystick.setHatSwitch(hatSwitch, -1);
if (lastDpadState[hatSwitch][0] == 1)
Joystick.setHatSwitch(hatSwitch, 0); // up
if (lastDpadState[hatSwitch][1] == 1)
Joystick.setHatSwitch(hatSwitch, 90); // right
if (lastDpadState[hatSwitch][2] == 1)
Joystick.setHatSwitch(hatSwitch, 180); // down
if (lastDpadState[hatSwitch][3] == 1)
Joystick.setHatSwitch(hatSwitch, 270);
// if the value changed
// for each hat switch
void updateButton()
for (int i = 0; i <= 9; i++)
int currentButtonState = !digitalRead(i + OFFSET_BUTTON);
if (currentButtonState != lastButtonState[i])
Joystick.setButton(i, currentButtonState);
lastButtonState[i] = currentButtonState;
void loop()
updateDpad();
updateButton();
delay(50);
【讨论】：
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