#include <LiquidCrystal.h>
LiquidCrystal lcd(PB10, PB11, PB12, PB13, PB14, PB15); //(rs, enable, d4, d5, d6, d7)


void setup() {
  Serial2.begin(9600);
  pinMode(PC13, OUTPUT);
  lcd.begin(16, 2);

  Serial2.println("--- MENU ---");
  Serial2.println("1 blink02");
  Serial2.println("2 blink2_1");
  Serial2.println("3 serial to PC");
  Serial2.println("4 LCD");
  Serial2.println("5 --- ---");
  Serial2.println("");
  Serial2.println("     1 -- 5 ?");
}


void loop() {
  while (Serial2.available() == 0) {} // シリアル通信でデータが送られてくるまで待つ。
  char c = Serial2.read(); // 一文字分データを取り出す。
  
  if (c == '1') { //
    while (1) {
      digitalWrite(PC13, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(200);              // wait for 0.2 second
      digitalWrite(PC13, LOW);    // turn the LED off by making the voltage LOW
      delay(200);              // wait for 0.2 second
    }
  }
  if (c == '2') { //
    while (1) {
      digitalWrite(PC13, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(1000);              // wait for a second
      digitalWrite(PC13, LOW);    // turn the LED off by making the voltage LOW
      delay(2000);              // wait for 2 seconds
    }
  }

  if (c == '3') { //
    Serial2.println("Hello World! 999");
    while (1) {
      digitalWrite(PC13, HIGH);
      delay(100);              
      digitalWrite(PC13, LOW);  
      delay(50);              
    }
  }

  if (c == '4') { //
    lcd.setCursor(0, 0); //(col, row)
    lcd.clear();
    lcd.print("hello world!");
    delay(5000);              // wait for 5 seconds
    lcd.setCursor(3, 1); //(col, row)
    lcd.print("1234567890");
    while (1) {
      digitalWrite(PC13, HIGH); 
      delay(500);              
      digitalWrite(PC13, LOW); 
      delay(50);              
    }
  }

}