From e99f63ef4135a9192c0067fa5daf12e96e13b1ec Mon Sep 17 00:00:00 2001
From: Mathieu Maret <mathieu.maret@gmail.com>
Date: Sun, 20 Mar 2016 00:14:24 +0100
Subject: [PATCH] Keep bmp180 status information

---
 WifiControlSensor/BMP180.ino            | 12 ++++++++++++
 WifiControlSensor/WebServer.ino         |  1 +
 WifiControlSensor/WifiControlSensor.ino | 10 ++++++----
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/WifiControlSensor/BMP180.ino b/WifiControlSensor/BMP180.ino
index 078e496..811b6b8 100644
--- a/WifiControlSensor/BMP180.ino
+++ b/WifiControlSensor/BMP180.ino
@@ -1,3 +1,15 @@
+SFE_BMP180 bmp180;
+int bmp180Connected = 0;
+
+int setupBMP180() {
+  bmp180Connected = bmp180.begin(SDA, SCL);
+  return bmp180Connected;
+}
+
+bool isBMPConnected() {
+  return bmp180Connected != 0;
+}
+
 int getTemperature(double &t) {
   char status;
   status = bmp180.startTemperature();
diff --git a/WifiControlSensor/WebServer.ino b/WifiControlSensor/WebServer.ino
index d835c87..c696495 100644
--- a/WifiControlSensor/WebServer.ino
+++ b/WifiControlSensor/WebServer.ino
@@ -5,6 +5,7 @@ void handleRoot() {
               "Current temperature " + String(temp, 2) + "C<br/>"
               "Current pressure " + String(pressure, 2) + "mB<br/>"
               "MQTT Status: " + (MQTT_isConnected() ? "Connected" : "Disconnected") + "<br/>"
+              "BMP 180 (Temp+Pression) Status: " + (isBMPConnected() ? "Connected" : "Disconnected") + "<br/>"
               "Free space: "+ ESP.getFreeSketchSpace() +"<br/>"
               "Free heap: "+ ESP.getFreeHeap() +"<br/>"
               "<a href=\"/setup\">Setup</a><br/>"
diff --git a/WifiControlSensor/WifiControlSensor.ino b/WifiControlSensor/WifiControlSensor.ino
index 9e64a8d..d780d8c 100644
--- a/WifiControlSensor/WifiControlSensor.ino
+++ b/WifiControlSensor/WifiControlSensor.ino
@@ -28,7 +28,7 @@
 
 //#define ENABLE_EXTRA_GPIO
 
-#define EEPROM_SIZE 512
+#define EEPROM_SIZE 256
 char eeprom[EEPROM_SIZE];
 
 #define WEB_DELAY_MS 100
@@ -49,7 +49,6 @@ uint8_t mode;
 const char *ssid = "ESPConfigurator";
 
 ESP8266WebServer server(80);
-SFE_BMP180 bmp180;
 
 /* WebServer decl*/
 void handleRoot();
@@ -68,6 +67,9 @@ void readEEPROM(uint8_t &bootMode, char **ssid, char **password, char **host, ch
 /* BMP180 decl */
 int getTemperature(double &t);
 int getTempAndPressure(double &t, double &p);
+int setupBMP180();
+bool isBMPConnected();
+
 
 /* MQTT decl */
 int MQTT_connect();
@@ -195,7 +197,7 @@ void setup() {
   if (mode == BOOTMODE_OTA) {
     setupOTA();
   } else {
-    if (bmp180.begin(SDA, SCL))
+    if (setupBMP180())
       Serial.println("BMP180 init success");
     setupWebServer(mode);
   }
@@ -210,7 +212,7 @@ void loop() {
     delay(WEB_DELAY_MS);
     nbCycle++;
     if (nbCycle > SAMPLING_PERIODE_MS / WEB_DELAY_MS) {
-      if (getTempAndPressure(temp, pressure) == 0) {
+      if (isBMPConnected() && getTempAndPressure(temp, pressure) == 0) {
         Serial.print("Current T°C ");
         Serial.print(temp);
         Serial.print( " Pressure mB ");