Python没有输出。连接到 Arduino

Question

请问为什么这个源代码在屏幕上没有输出。另外请告诉我为什么以及如何修复它。

该项目基于此源代码。 AutoRCCar on GitHub

我已经用这段代码刷了我的 Arduino Uno

    // assign pin num
int right_pin = 6;
int left_pin = 7;
int forward_pin = 10;
int reverse_pin = 9;

// duration for output
int time = 50;
// initial command
int command = 0;

void setup() {
  pinMode(right_pin, OUTPUT);
  pinMode(left_pin, OUTPUT);
  pinMode(forward_pin, OUTPUT);
  pinMode(reverse_pin, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  //receive command
  if (Serial.available() > 0){
    command = Serial.read();
  }
  else{
    reset();
  }
   send_command(command,time);
}

void right(int time){
  digitalWrite(right_pin, LOW);
  delay(time);
}

void left(int time){
  digitalWrite(left_pin, LOW);
  delay(time);
}

void forward(int time){
  digitalWrite(forward_pin, LOW);
  delay(time);
}

void reverse(int time){
  digitalWrite(reverse_pin, LOW);
  delay(time);
}

void forward_right(int time){
  digitalWrite(forward_pin, LOW);
  digitalWrite(right_pin, LOW);
  delay(time);
}

void reverse_right(int time){
  digitalWrite(reverse_pin, LOW);
  digitalWrite(right_pin, LOW);
  delay(time);
}

void forward_left(int time){
  digitalWrite(forward_pin, LOW);
  digitalWrite(left_pin, LOW);
  delay(time);
}

void reverse_left(int time){
  digitalWrite(reverse_pin, LOW);
  digitalWrite(left_pin, LOW);
  delay(time);
}

void reset(){
  digitalWrite(right_pin, HIGH);
  digitalWrite(left_pin, HIGH);
  digitalWrite(forward_pin, HIGH);
  digitalWrite(reverse_pin, HIGH);
}

void send_command(int command, int time){
  switch (command){

     //reset command
     case 0: reset(); break;

     // single command
     case 1: forward(time); break;
     case 2: reverse(time); break;
     case 3: right(time); break;
     case 4: left(time); break;

     //combination command
     case 6: forward_right(time); break;
     case 7: forward_left(time); break;
     case 8: reverse_right(time); break;
     case 9: reverse_left(time); break;

     default: Serial.print("Invalid Command\n");
    }
}

然后我运行了 rc_control_test.py
守则

__author__ = 'zhengwang'

import serial
import pygame
from pygame.locals import *


class RCTest(object):

    def __init__(self):
        pygame.init()
        self.ser = serial.Serial('COM3', 115200, timeout=1)
        self.send_inst = True
        self.steer()

    def steer(self):

        while self.send_inst:
            for event in pygame.event.get():
                if event.type == KEYDOWN:
                    key_input = pygame.key.get_pressed()

                    # complex orders
                    if key_input[pygame.K_UP] and key_input[pygame.K_RIGHT]:
                        print("Forward Right")
                        self.ser.write(chr(6))

                    elif key_input[pygame.K_UP] and key_input[pygame.K_LEFT]:
                        print("Forward Left")
                        self.ser.write(chr(7))

                    elif key_input[pygame.K_DOWN] and key_input[pygame.K_RIGHT]:
                        print("Reverse Right")
                        self.ser.write(chr(8))

                    elif key_input[pygame.K_DOWN] and key_input[pygame.K_LEFT]:
                        print("Reverse Left")
                        self.ser.write(chr(9))

                    # simple orders
                    elif key_input[pygame.K_UP]:
                        print("Forward")
                        self.ser.write(chr(1))

                    elif key_input[pygame.K_DOWN]:
                        print("Reverse")
                        self.ser.write(chr(2))

                    elif key_input[pygame.K_RIGHT]:
                        print("Right")
                        self.ser.write(chr(3))

                    elif key_input[pygame.K_LEFT]:
                        print("Left")
                        self.ser.write(chr(4))

                    # exit
                    elif key_input[pygame.K_x] or key_input[pygame.K_q]:
                        print 'Exit'
                        self.send_inst = False
                        self.ser.write(chr(0))
                        self.ser.close()
                        break

                elif event.type == pygame.KEYUP:
                    self.ser.write(chr(0))

if __name__ == '__main__':
    RCTest()

但只有在控制台中显示这个

RESTART: C:\Users\Raptor_Is_Online\Desktop\AutoRCCar\test\rc_control_test.py

如果可能，请帮助我。欢迎提出任何问题。 我对 Python 很陌生，因为我目前正在学习 C++，但这个项目是用 Python 编写的。我该如何解决这个问题？？

Answer 1

使用“pygame.display.set_mode()”它将初始化窗口单击箭头键，您将获得输出