add oled support

geiger_interface.ino

@@ -4,6 +4,10 @@
 #define JSON_CONFIG_FILE "/config.json"
 #define TUBE_NAME "J305"
 #define TUBE_FACTOR 0.00812
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 64
+#define i2c_Address 0x3c
+#define OLED_RESET -1
 
 #include <ESP_DoubleResetDetector.h>
 #include <LittleFS.h>
@@ -12,6 +16,11 @@
 #include <ArduinoJson.h>
 #include <PubSubClient.h>
 #include <HTTPClient.h>
+#include "time.h"
+
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SH110X.h>
 
 DoubleResetDetector* drd;
 
@@ -19,6 +28,8 @@ WiFiClient espClient; // connection for MQTT
 WiFiClient espClient2; // connection fot HTTP Client
 PubSubClient client(espClient);
 
+Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+
 // Initialize LittleFS
 void initLittleFS() {
   if (!LittleFS.begin(true)) {
@@ -53,11 +64,17 @@ void ICACHE_RAM_ATTR  handleInterrupt() {
   GeigerCounts++;
 }
 
+const char* ntpServer = "europe.pool.ntp.org";
+const long  gmtOffset_sec = 3600; // GMT +1 = 3600
+const int   daylightOffset_sec = 3600;
+
 String GMCMap_Request_payload = "http://www.GMCmap.com/log2.asp";
 String GMCMap_Request = "";
 String GMCMap_Data = "";
 String GMCMap = "NONE";
 
+struct tm timeinfo;
+
 void saveConfigFile()
 {
   Serial.println(F("Saving config"));
@@ -152,6 +169,38 @@ void reconnect() {
   }
 }
 
+void lcdPrint(String x) {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(SH110X_WHITE);
+  display.setCursor(0, 10);
+  display.println(x);
+  display.display(); 
+}
+
+void lcdUpdate() {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(SH110X_WHITE);
+  display.setCursor(0, 0);
+  display.println(printLocalTime());
+  display.println("uSv/h: " + String(buf2));
+  display.println("CPM: " + String(buf));
+  display.display(); 
+}
+
+String printLocalTime()
+{
+  //if(!getLocalTime(&timeinfo)){
+  //  Serial.println("Failed to obtain time");
+  //  return "Failed to obtain time";
+  //}
+  char buffer[80];
+  //strftime(buffer, 80, "%H:%M:%S %d-%m-%Y ", &timeinfo);
+  strftime(buffer, 80, "%H:%M <|> %d-%m-%Y ", &timeinfo);
+  return String(buffer);
+}
+
 void setup() {
   // WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
   // it is a good practice to make sure your code sets wifi mode how you want it.
@@ -161,6 +210,10 @@ void setup() {
   attachInterrupt(digitalPinToInterrupt(interruptPin), handleInterrupt, FALLING   );
   initLittleFS();
 
+  display.begin(i2c_Address, true);
+
+  lcdPrint("Geiger Interace");
+
   drd = new DoubleResetDetector(DRD_TIMEOUT, DRD_ADDRESS);
   bool forceConfig = false;
   if (drd->detectDoubleReset()) {
@@ -205,7 +258,6 @@ void setup() {
     }
   }
 
-  //tutaj bez sensu
   strcpy(mqttServer, custom_mqttServer.getValue());
   strcpy(mqttUser, custom_mqttUser.getValue());
   strcpy(mqttPass, custom_mqttPass.getValue());
@@ -228,6 +280,9 @@ void setup() {
 
   client.setServer(mqttServer, 1883);
 
+  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
+  printLocalTime();
+
 }
 
 void loop() {
@@ -252,10 +307,16 @@ void loop() {
       client.publish("esp32/uSv", buf2);
       GeigerCounts = 0;
       mold += 60000;
+    lcdUpdate();
     }
     client.loop();
   }
 
+  getLocalTime(&timeinfo);
+  if (timeinfo.tm_sec == 0){
+    lcdUpdate();
+  }
+
   // if GMC IDs provided
   if (String(gmcAccountID) != "") {
     currentMillis = millis();