Arduino Keypad: the following key does not respond

Question

I was wondering, by the time I press the following key, it does not return to the main_screen() function. How can I fix my code?

void loop()
 { 
 int exit = 0;
 char input = customKeypad.getKey();
 
 main_screen();
 if (input=='A')
 { 
 delay(100);
 lcd.clear();
 
 do{
 
 lcd.setCursor(1,0);
 lcd.print("Enter minutes: ");
 
 
 if (input=='B')
 {
 break;
 lcd.clear();
 }
 }
 while(1);
 }

}

• ArduinoFan: can you also share the complete code?

Answer 1

You need to read the input again after you get input == 'A'. At the moment, when you enter the do ... while loop, the input is always 'A', so input == 'B' is never true, and the loop never exits.