将字符串从 pyserial 发送到 arduino

Question

Hello i need to send spotify song name from python to arduino, but arduino receive only numbers like '122', '117' etc. How to send all string? Here is my code

python code:

import serial
import time
from SwSpotify import spotify

ser = serial.Serial('COM3', 9600)

while True:
   print(spotify.song())
   ser.write(spotify.song().encode())
   time.sleep(5)

Arduino code:

#include <LiquidCrystal_PCF8574.h>
#include <Wire.h>

LiquidCrystal_PCF8574 lcd(0x27); // set the LCD address to 0x27 for a 16 chars and 2 line display


int incomingByte;     

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2); 
  lcd.clear();
  lcd.setBacklight(255);
  lcd.print("Hello!");
}

void loop() {
  if (Serial.available() > 0) {
    incomingByte = Serial.read();
    lcd.clear();
    lcd.print(incomingByte);
  }
}

Answer 1

In order to display a character use lcd.write

http://www.arduino.cc/en/Tutorial/LiquidCrystalSerialDisplay

 */ // include the library code: #include <LiquidCrystal.h> // initialize the library by associating any needed LCD interface pin // with the arduino pin number it is connected to const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; LiquidCrystal lcd(rs, en, d4, d5, d6, d7); void setup() { // set up the LCD's number of columns and rows: lcd.begin(16, 2); // initialize the serial communications: Serial.begin(9600); } void loop() { // when characters arrive over the serial port... if (Serial.available()) { // wait a bit for the entire message to arrive delay(100); // clear the screen lcd.clear(); // read all the available characters while (Serial.available() > 0) { // display each character to the LCD lcd.write(Serial.read()); } } }

Please read manuals and refer to Arduino's examples and tutorials