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dda
dda
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How to send the variable which storea number to Arduino via Python over serial?

So what I have done is calledcall an API in pythonPython and it gives as output as a single digit number and an Arduino program which receives this number over serial and displays it on a 7 segment-segment display over the serial.

I wrote a different program in which arduinoArduino sends the data and pythona Python program receives thatit. That worked but the following program is not working. What is the problem?

I am using pythonPython 3 and Arduino UNOUno.

PYTHON PROGRAMPython program:

ARDUINO PROGRAMArduino program:

int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
int h=9;
int rx_byte = 0;

void setup() 
 {     
  Serial.begin(9600);          
  pinMode(a, OUTPUT);  
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(h, OUTPUT);
  digitalWrite(h, 0);  // start with the "dot" off
}

void loop()
  {
  if (Serial.available() > 0)
  {
     rx_byte = Serial.read(); //reading serial
    switch (rx_byte) {
    case 0:
        zero();
        break;
    case 1:
        one();
        break;
    case 2:
        two();
        break;
    case 3:
        three();
        break;
    case 4:
        four();
        break;
    case 5:
        five();
        break;
    case 6:
        six();
        break;
    case 7:
        seven();
        break;
    case 8:
        eight();
        break;
    case 9:
        nine();
        break;
    }
    
 } 
}

    // write '9'

    void eight() {
        digitalWrite(a, 1);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);


    }
    void seven() {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 0);

}
    void six() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);
    }
    void five() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 0);
        digitalWrite(f, 1);
        digitalWrite(g, 1);

    }
    void four()
    {
    digitalWrite(a, 0);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);
    }
    void three()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 1);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 1);

}
    void two()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 0);
    digitalWrite(d, 1);
    digitalWrite(e, 1);
    digitalWrite(f, 0);
    digitalWrite(g, 1);
}
    void one()
    {
        digitalWrite(a, 0);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 0);
        digitalWrite(e, 0);
        digitalWrite(f, 0);
        digitalWrite(g, 0);

}
 void zero()
  {
     digitalWrite(a, 1);
     digitalWrite(b, 1);
     digitalWrite(c, 1);
     digitalWrite(d, 1);
     digitalWrite(e, 1);
     digitalWrite(f, 1);
     digitalWrite(g, 0);

}
void nine()
  {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);

}

I am quite new to programming PLEASE HELP :). Please help.

How to send the variable which store number to Arduino via Python over serial?

So what I have done is called an API in python and it gives output as a single digit number and an Arduino program which receives this number and displays on 7 segment display over the serial.

I wrote a different program in which arduino sends the data and python receives that worked but following program is not working. What is the problem?

I am using python 3 and Arduino UNO.

PYTHON PROGRAM:

ARDUINO PROGRAM:

int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
int h=9;
int rx_byte = 0;

void setup() 
 {     
  Serial.begin(9600);          
  pinMode(a, OUTPUT);  
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(h, OUTPUT);
  digitalWrite(h, 0);  // start with the "dot" off
}

void loop()
 {
  if (Serial.available() > 0)
  {
     rx_byte = Serial.read(); //reading serial
    switch (rx_byte) {
    case 0:
        zero();
        break;
    case 1:
        one();
        break;
    case 2:
        two();
        break;
    case 3:
        three();
        break;
    case 4:
        four();
        break;
    case 5:
        five();
        break;
    case 6:
        six();
        break;
    case 7:
        seven();
        break;
    case 8:
        eight();
        break;
    case 9:
        nine();
        break;
    }
    
 }}

    // write '9'

    void eight() {
        digitalWrite(a, 1);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);


    }
    void seven() {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 0);

}
    void six() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);
    }
    void five() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 0);
        digitalWrite(f, 1);
        digitalWrite(g, 1);

    }
    void four()
    {
    digitalWrite(a, 0);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);
    }
    void three()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 1);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 1);

}
    void two()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 0);
    digitalWrite(d, 1);
    digitalWrite(e, 1);
    digitalWrite(f, 0);
    digitalWrite(g, 1);
}
    void one()
    {
        digitalWrite(a, 0);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 0);
        digitalWrite(e, 0);
        digitalWrite(f, 0);
        digitalWrite(g, 0);

}
 void zero()
  {
     digitalWrite(a, 1);
     digitalWrite(b, 1);
     digitalWrite(c, 1);
     digitalWrite(d, 1);
     digitalWrite(e, 1);
     digitalWrite(f, 1);
     digitalWrite(g, 0);

}
void nine()
 {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);

}

I am quite new programming PLEASE HELP :)

How to send a number to Arduino via Python over serial?

I call an API in Python and it gives as output as a single digit and an Arduino program receives this number over serial and displays it on a 7-segment display.

I wrote a different program in which Arduino sends the data and a Python program receives it. That worked but the following program is not working. What is the problem?

I am using Python 3 and Arduino Uno.

Python program:

Arduino program:

int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
int h=9;
int rx_byte = 0;

void setup() {
  Serial.begin(9600);
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(h, OUTPUT);
  digitalWrite(h, 0);  // start with the "dot" off
}

void loop() {
  if (Serial.available() > 0) {
    rx_byte = Serial.read(); //reading serial
    switch (rx_byte) {
    case 0:
      zero();
      break;
    case 1:
      one();
      break;
    case 2:
      two();
      break;
    case 3:
      three();
      break;
    case 4:
      four();
      break;
    case 5:
      five();
      break;
    case 6:
      six();
      break;
    case 7:
      seven();
      break;
    case 8:
      eight();
      break;
    case 9:
      nine();
      break;
    }
  } 
}

// write '9'

void eight() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 1);


}
void seven() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 0);

}
void six() {
  digitalWrite(a, 1);
  digitalWrite(b, 0);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}
void five() {
  digitalWrite(a, 1);
  digitalWrite(b, 0);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);

}
void four() {
  digitalWrite(a, 0);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}
void three() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 1);

}
void two() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 0);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 0);
  digitalWrite(g, 1);
}
void one() {
  digitalWrite(a, 0);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 0);

}
void zero() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 0);

}
void nine() {
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);

}

I am quite new to programming. Please help.

Source Link
user36950
user36950
  • 1
  • 1

How to send the variable which store number to Arduino via Python over serial?

So what I have done is called an API in python and it gives output as a single digit number and an Arduino program which receives this number and displays on 7 segment display over the serial.

I wrote a different program in which arduino sends the data and python receives that worked but following program is not working. What is the problem?

I am using python 3 and Arduino UNO.

PYTHON PROGRAM:

import serial ,requests, json, time 
arduino = serial.Serial('COM1', 9600, timeout=.1)
time.sleep(1)
response = requests.get("https://traffic.cit.api.here.com/traffic/6.1/flow.json?bbox=12.9808%2C77.5759%3B12.9803%2C77.5767&app_id=zbvY0tdRs089c3ZTKqWR&app_code=pxAtGksNBgVD9V5XF5nEzA",)
#CALLING API
response.content.decode("utf-8")
data = response.json()
text = str(data) #CONVERSION TO STRING
l = len(text)
for i in range(0,l): #Taking out the number
    if text[i] == 'J':
        j = text[i + 5]
        print (j)
        arduino.write(j) #writing over serial
        break

ARDUINO PROGRAM:

int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
int h=9;
int rx_byte = 0;

void setup() 
{     
  Serial.begin(9600);          
  pinMode(a, OUTPUT);  
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(h, OUTPUT);
  digitalWrite(h, 0);  // start with the "dot" off
}

void loop()
{
  if (Serial.available() > 0)
  {
     rx_byte = Serial.read(); //reading serial
    switch (rx_byte) {
    case 0:
        zero();
        break;
    case 1:
        one();
        break;
    case 2:
        two();
        break;
    case 3:
        three();
        break;
    case 4:
        four();
        break;
    case 5:
        five();
        break;
    case 6:
        six();
        break;
    case 7:
        seven();
        break;
    case 8:
        eight();
        break;
    case 9:
        nine();
        break;
    }
    
}}

    // write '9'

    void eight() {
        digitalWrite(a, 1);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);


    }
    void seven() {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 0);

}
    void six() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 1);
        digitalWrite(f, 1);
        digitalWrite(g, 1);
    }
    void five() {
        digitalWrite(a, 1);
        digitalWrite(b, 0);
        digitalWrite(c, 1);
        digitalWrite(d, 1);
        digitalWrite(e, 0);
        digitalWrite(f, 1);
        digitalWrite(g, 1);

    }
    void four()
    {
    digitalWrite(a, 0);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);
    }
    void three()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 1);
    digitalWrite(e, 0);
    digitalWrite(f, 0);
    digitalWrite(g, 1);

}
    void two()
    {
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 0);
    digitalWrite(d, 1);
    digitalWrite(e, 1);
    digitalWrite(f, 0);
    digitalWrite(g, 1);
}
    void one()
    {
        digitalWrite(a, 0);
        digitalWrite(b, 1);
        digitalWrite(c, 1);
        digitalWrite(d, 0);
        digitalWrite(e, 0);
        digitalWrite(f, 0);
        digitalWrite(g, 0);

}
 void zero()
 {
     digitalWrite(a, 1);
     digitalWrite(b, 1);
     digitalWrite(c, 1);
     digitalWrite(d, 1);
     digitalWrite(e, 1);
     digitalWrite(f, 1);
     digitalWrite(g, 0);

}
void nine()
{
    digitalWrite(a, 1);
    digitalWrite(b, 1);
    digitalWrite(c, 1);
    digitalWrite(d, 0);
    digitalWrite(e, 0);
    digitalWrite(f, 1);
    digitalWrite(g, 1);

}

I am quite new programming PLEASE HELP :)