Raspberry Pi - 捕获 GPIO 输入并忽略其他输入 10 秒

Question

因此，我创建了以下代码来捕获来自 Raspberry PI 3 B+ 的三个 GPIO 端子的输入。这段代码做了我想要的，除了似乎有一个缓冲区和 event_detect 系统，我想在第一个输入变为活动状态后清除它。该计划的目的是为人们提供类似游戏节目的体验，让人们同时尝试蜂拥而至。但只能有一个“第一个”人进来。程序应该检测第一个活动输入，并基本上忽略其余的 10 秒。

PS - 我对 Python 和 Raspberry pi 的细节非常陌生。

PPS - 我已将计时器减少到 3 秒，以便更轻松地排除故障。

# External module imports
from guizero import App, Text, TextBox, PushButton
import RPi.GPIO as GPIO
import sys
import time

# This procedure will watch three inputs and lock in the team that calls in first for 10seconds
# Change the colors of the buttons to show which team pressed in first.

def action1(dunno):
        # Team1 button pressed
        team1_btn.bg="green"
        team2_btn.bg="red"
        team3_btn.bg="red"
        sleep10()

def action2(dunno):
        # Team1 button pressed
        team1_btn.bg="red"
        team2_btn.bg="green"
        team3_btn.bg="red"
        sleep10()

def action3(dunno):
        # Team1 button pressed
        team1_btn.bg="red"
        team2_btn.bg="red"
        team3_btn.bg="green"
        sleep10()

def sleep10():
        #sleep for 10 seconds
        delay_timer.visible=True
        for i in range(3,0,-1):
                delay_timer.value=str(i)
                time.sleep(1)
        delay_timer.visible=False
        team1_btn.bg="light grey"
        team2_btn.bg="light grey"
        team3_btn.bg="light grey"


# Pin setup
GPIO.setmode(GPIO.BCM) # Broadcom pin-numbering scheme
GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(20, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(21, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.add_event_detect(16, GPIO.RISING, callback=action1, bouncetime=1800)
GPIO.add_event_detect(20, GPIO.RISING, callback=action2, bouncetime=1800)
GPIO.add_event_detect(21, GPIO.RISING, callback=action3, bouncetime=1800)


app = App(title="A07 DSS Tri-State - Jeopardy", width=700)
blank1 = Text(app, text="")
welcome_message = Text(app, text="This..      is..       Jeopardy!!", size=30, font="Times New Roman", color="blue")

blank2 = Text(app, text="")
blank3 = Text(app, text="")

team1_btn = PushButton(app, text="Team Black & Blue")
team1_btn.bg="light grey"
blank4 = Text(app, text="")
team2_btn = PushButton(app, text="Team Holiday Spirit")
team2_btn.bg="light grey"
blank5 = Text(app, text="")
team3_btn = PushButton(app, text="Team Creamsicle")
team3_btn.bg="light grey"
blank6 = Text(app, text="")
delay_timer = Text(app, text="0")
delay_timer.visible=False

app.display()

Answer 1

@Gajtguy 你还有这个代码吗？正在考虑一款像你提到的那样的游戏。