lesson 60 finished

Sensors/platformio.ini

@@ -12,8 +12,8 @@
 platform = atmelavr
 board = uno
 framework = arduino
-; lib_deps =
+lib_deps =
 ;   # RECOMMENDED
 ;   # Accept new functionality in a backwards compatible manner and patches
 ;   adafruit/DHT sensor library @ ^1.4.6
-;   arduino-libraries/LiquidCrystal @ ^1.0.7
+  arduino-libraries/LiquidCrystal @ ^1.0.7

Sensors/src/main.cpp

@@ -1,26 +1,54 @@
-// https://www.youtube.com/watch?v=M-UKXCUI0rE&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=53
-// https://www.youtube.com/watch?v=BTMMNsL0_b0&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=54
-// https://www.youtube.com/watch?v=2hwrDSVHQ-E&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=55
+// https://www.youtube.com/watch?v=A6kEroT-g2o&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=60
 
 
 #include <Arduino.h>
+#include <LiquidCrystal.h>
 
-int trigPin = 12;
-int echoPin = 11;
+const int rs = 7, en = 8, d4 = 9, d5 = 10, d6 = 11, d7 = 12;
+LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
+
+
+int trigPin = 2;
+int echoPin = 3;
 int pingTravleTime;
 float distance;
 const int pulsTime = 40; // uS
 const float pingTimeToDistance = 0.017; // uS to cm, travletime[s] * 340 m/s / 2
 
+int buttonPin = A0;
+int buttomState;
+
+int setTime = 500;
+int dt = 1000;
+
 void setup() {
   // put your setup code here, to run once:
   Serial.begin(9600);
+  Serial.println("Measurring Distance");
+
+  delay(setTime);
+
+  lcd.begin(16, 2);
+  lcd.print("Hello, World!");
+
   pinMode(trigPin, OUTPUT);
   pinMode(echoPin, INPUT);
+  pinMode(buttonPin, INPUT);
+  digitalWrite(buttonPin, HIGH);
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
+  // put your main code here, to run repeatedly
+  buttomState = digitalRead(buttonPin);
+  while (buttomState == HIGH)
+  {
+    lcd.setCursor(0, 0);
+    lcd.print("Place the Target");
+    lcd.setCursor(0, 1);
+    lcd.print("Press the Button");    
+    buttomState = digitalRead(buttonPin);
+  }
+  {
     digitalWrite(trigPin, LOW);
     delayMicroseconds(pulsTime);
     digitalWrite(trigPin, HIGH);
@@ -28,12 +56,27 @@ void loop() {
     digitalWrite(trigPin, LOW);
     pingTravleTime = pulseIn(echoPin, HIGH);
     delay(25);
+
+    distance = pingTravleTime * pingTimeToDistance; // Travel time to distance in cm
+
+    Serial.print("Ping Time and Distance:");
     Serial.print("Ping Time: ");
     Serial.print(pingTravleTime);
-
-  distance = pingTravleTime * pingTimeToDistance;
     Serial.print(" Distance: ");
     Serial.print(distance);
     Serial.println(" cm");
 
+    // Display on LCD
+    lcd.clear();
+    lcd.setCursor(0, 0);
+    lcd.print("Ping Time: ");
+    lcd.print(pingTravleTime);
+    lcd.print("us");
+    lcd.setCursor(0, 1);
+    lcd.print("Distance: ");
+    lcd.print(distance);
+    lcd.print("cm");
+  }
+  
+
 }