让Arduino读取一个字符串（通过Python发送），相应地移动Motor进行输入，然后接收下一个字符串

Question

I am working on a Rubiks Cube Solver, which uses an Arduino and motors to move each face around. The Python script I use writes a move per line, then is meant to the first line, then the second line, and so on

x = 0
    with open(FILEPATH, "r") as f:
        lines = f.readlines()
        FileEnd = False
        while FileEnd == False:
            try:
                ser.write(lines[x])
                print lines[x]
                x += 1

            except serial.SerialException:
                time.sleep(1)

             except IndexError:
                FileEnd = True

The Arduino is supposed to receive this String, stop reading from the Serial, act accordingly as to what is in the String, then accept then next String.

void setup()
{
  Serial.begin(9600);
  Serial.flush();
  Serial.println("Power On");

}

void loop()
{
  Serial.begin(9600);
  // Read from Serial Port here
  Serial.end();
  // Act accordingly to String here
  Serial.flush();
  //Start all over again
}

I am faced with two Problems:

1) The Python script keeps sending each move, uncaring that Serial.end() should have occured

2) When I read the Serial Monitor, I see the same bunch of seemingly random characters that flood the entire moniter upon receiving input from the Python Script

Help Please? :3

Answer 1

I have a tiny bit of experience with doing stuff like this. I think pyserial may help in this case http://pyserial.sourceforge.net/ In terms of the serial monitor, I believe there is a way to flush the data before you sent with with pyserial. There are a lot of stuff out there with arduino and pyserial.

Answer 2

I would recommend sending the commands in G-Code Format.

There are several Arduino firmwares that already accept G-Code and drive multiple motors. This way you don't need to re-invent both the Serial Receiver, Multiple Motor Command Queue and Multiple Motor software drivers.

I would recommend Grbl firmware. It will run on an UNO and drive step motors from a variety of shields.

So that your Python can simply send and forget the G code commands, as needed.