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我可以请知道为什么这个源代码在屏幕上没有输出。也请告诉我为什么以及如何修复它。Python没有输出。连接到Arduino
该项目基于此源代码。 AutoRCCar on GitHub
我纷纷亮出我的Arduino的乌诺与此代码
// 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");
}
}
然后我已运行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()
但在控制台
只有这显示RESTART: C:\Users\Raptor_Is_Online\Desktop\AutoRCCar\test\rc_control_test.py
如果poss请帮助我。任何和所有问题都欢迎。 我对Python非常陌生,因为我目前在学习C++,但是这个项目是在Python中。我该如何解决??
把更多的'打印()'和马贝你会看到哪里出了问题。问题是你如何运行Python代码,你是否安装了pygame和SDL1.2? – furas
我通过闲置运行我的代码。我按下运行模块,它打开了另一个空闲状态,我得到了上面提到的输出。是的,我有Pygame,但没有SDL 1.2。还有我应该在哪里打印()以及如何输入内容? @furas –
首先使用'python.exe your_script.py'直接在cmd.exe中运行。也许它会显示一些错误消息,哪个IDLE coldn't不显示,并重新启动。之后,你可以在任何地方放置print(),并在pygame.init()之前将值输出到变量中(例如print(“self.ser:”,self.ser)')和诸如'“的消息。通过这种方式,你可以看到它在什么时候崩溃以及在这个时刻变量的值是什么。或者学习如何使用调试器;) – furas