From 472d14b048f90c54d802ed75a8fc5c410bcad1c3 Mon Sep 17 00:00:00 2001
From: Marcus <marcus@deltalima.org>
Date: Tue, 8 Aug 2023 20:36:16 +0200
Subject: [PATCH] add i2c 16x2 display output

---
 main/main.ino | 60 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 57 insertions(+), 3 deletions(-)

diff --git a/main/main.ino b/main/main.ino
index 8999e98..7ada6b7 100644
--- a/main/main.ino
+++ b/main/main.ino
@@ -5,6 +5,9 @@
 
 #include <OneWire.h>
 #include <DallasTemperature.h>
+#include <LiquidCrystal_I2C.h>
+
+LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows
 
 // Data wire is conntec to the Arduino digital pin 4
 #define ONE_WIRE_BUS 2
@@ -38,7 +41,32 @@ uint8_t addrSensor1[8] = { 0x28, 0xFF, 0x64, 0x1F, 0x79, 0xD1, 0xB1, 0x75 };
 uint8_t addrSensor2[8] = { 0x28, 0xFF, 0x64, 0x1F, 0x79, 0xD7, 0xDA, 0x9A };
 
 void setup() {
-  // put your setup code here, to run once:
+  lcd.init(); // initialize the lcd
+  lcd.backlight();
+
+  lcd.clear();                 // clear display
+  lcd.setCursor(0, 0);         // move cursor to   (0, 0)
+  lcd.print("*fridge control*");        // print message at (0, 0)
+  lcd.setCursor(0, 1);         // move cursor to   (0, 0)
+  lcd.print("    by DeltaLima");
+  delay(1500);
+  
+  // display default values
+  lcd.clear();
+  lcd.setCursor(0, 0);
+  lcd.print("1: H");
+  lcd.print(HTemp1);
+  lcd.print(" L");
+  lcd.print(LTemp1);
+    
+  lcd.setCursor(0, 1);
+  lcd.print("2: H");
+  lcd.print(HTemp2);
+  lcd.print(" L");
+  lcd.print(LTemp2);
+  delay(3500);
+
+  // init MOSFET Pins
   pinMode(MOSFET1, OUTPUT);
   pinMode(MOSFET2, OUTPUT);
 
@@ -48,9 +76,9 @@ void setup() {
 }
 
 void loop() {
-
+  // get sensor values
   sensors.requestTemperatures(); 
-  
+
   tempSensor1 = sensors.getTempC(addrSensor1);
   if(tempSensor1 > HTemp1) {
     digitalWrite(MOSFET1, HIGH);
@@ -69,6 +97,30 @@ void loop() {
     fetState2 = 0;
   }
 
+  // LCD Display
+  lcd.clear();                 
+  lcd.setCursor(0, 0);         
+  lcd.print("1: ");        
+  lcd.print(tempSensor1);
+  lcd.print(" ");
+  lcd.print((char)223);
+  lcd.print("C");
+  lcd.setCursor(14,0);
+  lcd.print("|");
+  lcd.print(fetState1);
+  
+  lcd.setCursor(0, 1);
+  lcd.print("2: ");
+  lcd.print(tempSensor2);
+  lcd.print(" ");
+  lcd.print((char)223);
+  lcd.print("C");
+  lcd.setCursor(14,1);
+  lcd.print("|");  
+  lcd.print(fetState2);
+
+    
+  // JSON
   StaticJsonDocument<96> jsonOut;
   //jsonOut["sensor"] = "1";
   jsonOut["1"]["temp"] = tempSensor1;
@@ -79,6 +131,8 @@ void loop() {
   jsonOut["2"]["state"] = fetState2;
   serializeJson(jsonOut, Serial);
   Serial.println();
+
+
   delay(5000);
   
 }