Added Example for OLED and Wifi. Improved OLED code.

airgradienthq · Aug 13, 2020 · f170404 · f170404
1 parent 16a29b4
commit f170404
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Showing 3 changed files with 98 additions and 12 deletions.
diff --git a/examples/C02_PM_SHT_OLED/C02_PM_SHT_OLED.ino b/examples/C02_PM_SHT_OLED/C02_PM_SHT_OLED.ino
@@ -10,7 +10,7 @@ void setup(){
   Serial.begin(9600);
   display.init();
   display.flipScreenVertically();
-  showTextRectangle("Init", String(ESP.getChipId(),HEX));
+  showTextRectangle("Init", String(ESP.getChipId(),HEX),true);
 
   ag.PMS_Init();
   ag.CO2_Init();
@@ -23,19 +23,23 @@ void loop(){
   int PM2 = ag.getPM2_Raw();
   int CO2 = ag.getCO2_Raw();
   TMP_RH result = ag.periodicFetchData();
-  showTextRectangle(String(result.t),String(result.rh)+"%");
+  showTextRectangle(String(result.t),String(result.rh)+"%",false);
   delay(2000);
-  showTextRectangle("PM2",String(PM2));
+  showTextRectangle("PM2",String(PM2),false);
   delay(2000);
-  showTextRectangle("CO2",String(CO2));
+  showTextRectangle("CO2",String(CO2),false);
   delay(2000);
 }
 
 // DISPLAY
-void showTextRectangle(String ln1, String ln2) {
+void showTextRectangle(String ln1, String ln2, boolean small) {
   display.clear();
   display.setTextAlignment(TEXT_ALIGN_LEFT);
-  display.setFont(ArialMT_Plain_24);
+  if (small) {
+    display.setFont(ArialMT_Plain_16);
+  } else {
+    display.setFont(ArialMT_Plain_24);
+  }
   display.drawString(32, 12, ln1);
   display.drawString(32, 36, ln2);
   display.display();

diff --git a/examples/C02_PM_SHT_OLED_WIFI/C02_PM_SHT_OLED_WIFI.ino b/examples/C02_PM_SHT_OLED_WIFI/C02_PM_SHT_OLED_WIFI.ino
@@ -17,7 +17,7 @@ void setup(){
 
   display.init();
   display.flipScreenVertically();
-  showTextRectangle("Init", String(ESP.getChipId(),HEX));
+  showTextRectangle("Init", String(ESP.getChipId(),HEX),true);
 
   ag.PMS_Init();
   ag.CO2_Init();
@@ -32,11 +32,11 @@ void loop(){
   int CO2 = ag.getCO2_Raw();
   TMP_RH result = ag.periodicFetchData();
 
-  showTextRectangle(String(result.t),String(result.rh)+"%");
+  showTextRectangle(String(result.t),String(result.rh)+"%",false);
   delay(2000);
-  showTextRectangle("PM2",String(PM2));
+  showTextRectangle("PM2",String(PM2),false);
   delay(2000);
-  showTextRectangle("CO2",String(CO2));
+  showTextRectangle("CO2",String(CO2),false);
   delay(2000);
 
   // send payload
@@ -57,10 +57,14 @@ void loop(){
 }
 
 // DISPLAY
-void showTextRectangle(String ln1, String ln2) {
+void showTextRectangle(String ln1, String ln2, boolean small) {
   display.clear();
   display.setTextAlignment(TEXT_ALIGN_LEFT);
-  display.setFont(ArialMT_Plain_24);
+  if (small) {
+    display.setFont(ArialMT_Plain_16);
+  } else {
+    display.setFont(ArialMT_Plain_24);
+  }
   display.drawString(32, 12, ln1);
   display.drawString(32, 36, ln2);
   display.display();

diff --git a/examples/PM_OLED_WIFI/PM_OLED_WIFI.ino b/examples/PM_OLED_WIFI/PM_OLED_WIFI.ino
@@ -0,0 +1,78 @@
+#include <AirGradient.h>
+#include <WiFiManager.h>
+#include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
+
+#include <Wire.h>
+#include "SSD1306Wire.h"
+
+AirGradient ag = AirGradient();
+
+SSD1306Wire display(0x3c, SDA, SCL);
+
+String APIROOT = "http://hw.airgradient.com/";
+
+void setup(){
+  Serial.begin(9600);
+
+  display.init();
+  display.flipScreenVertically();
+  showTextRectangle("Init", String(ESP.getChipId(),HEX),true);
+
+  ag.PMS_Init();
+
+  connectToWifi();
+  delay(2000);
+}
+
+void loop(){
+  int PM = ag.getPM2_Raw();
+  showTextRectangle("PM2",String(PM),false);
+
+  // send payload
+  String payload = "{\"pm02\":" + String(PM) +  ",\"wifi\":" + String(WiFi.RSSI()) +  "}";
+  Serial.println(payload);
+  String POSTURL = APIROOT + "sensors/airgradient:" + String(ESP.getChipId(),HEX) + "/measures";
+  Serial.println(POSTURL);
+  HTTPClient http;
+  http.begin(POSTURL);
+  http.addHeader("content-type", "application/json");
+  int httpCode = http.POST(payload);
+  String response = http.getString();
+  Serial.println(httpCode);
+  Serial.println(response);
+  http.end();
+
+  delay(30000);
+}
+
+// DISPLAY
+void showTextRectangle(String ln1, String ln2, boolean small) {
+  display.clear();
+  display.setTextAlignment(TEXT_ALIGN_LEFT);
+  if (small) {
+    display.setFont(ArialMT_Plain_16);
+  } else {
+    display.setFont(ArialMT_Plain_24);
+  }
+  display.drawString(32, 12, ln1);
+  display.drawString(32, 36, ln2);
+  display.display();
+}
+
+
+
+// Wifi Manager
+void connectToWifi(){
+  WiFiManager wifiManager;
+  //WiFi.disconnect(); //to delete previous saved hotspot
+  String HOTSPOT = "AIRGRADIENT-"+String(ESP.getChipId(),HEX);
+  wifiManager.setTimeout(120);
+  if(!wifiManager.autoConnect((const char*)HOTSPOT.c_str())) {
+      //Serial.println("failed to connect and hit timeout");
+      delay(3000);
+      ESP.restart();
+      delay(5000);
+  }
+
+}