Keyestudio 4WD Bluetooth Multi-functional Car Manual page 127

M_Control_IO_config();
Set_Speed(Lpwm_val,Rpwm_val);
Serial.begin(9600); //initialized serial port , using Bluetooth as serial port, setting baud at 9600
lcd.setCursor(0, 0); //setting cursor in the first row and column
lcd.print(" Wait Sigal");
stopp();
}
void loop()
{
lcd.setCursor(0, 0); //setting cursor in the first row and column
lcd.print("BluetoothControl");
if(Serial.available()) //to judge whether the serial port receives the data.
{
Bluetooth_val=Serial.read(); //reading (Bluetooth) data of serial port,giving the value of val;
switch(Bluetooth_val)
{
case 'U':advance(); //UP
break;
case 'D': back(); //back
break;
case 'L':turnL(); //Left
break;
case 'R':turnR(); //Right
break;
case 'S':stopp(); //stop
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