add i2c temp sensor

support BH1750 light sensor
extract a few more fields from openweather (min,max,pressure values)

README.md

@@ -53,8 +53,43 @@ https://api.openweathermap.org/data/2.5/forecast?q=Boeblingen,de&units=metric&&a
 
 The query string could contain cnt=N param to limit output list, but cnt=2 would mean get +3 and +6 hour forcast for today, looks there is no 'one-item-per-day' filter in the api.
 
+#### ArduinJson
 We use ArduinJson to parse the response as a stream directly after submitting the api request. Some ArduinoJson filtering is applied to further reduce the returned data.
 
+##### ArduinJson Filter (example)
+More info here: https://arduinojson.org/v6/example/filter/
+
+Assistant:
+
+https://arduinojson.org/v6/assistant/#
+
+```
+{
+  "city": true,
+  "list": [
+    {
+      "dt": true,
+      "weather": [
+        {
+          "icon": true,
+          "id": true
+        }
+      ],
+      "wind": {
+        "speed": true
+      },
+      "main": {
+        "temp": true,
+        "temp_min": true,
+        "temp_max": true,
+        "pressure": true,
+        "grnd_level": true,
+        "humidity": true
+      }
+    }
+  ]
+}
+```
 
 ## Issues
 * the "middle" row of the clock digigts is somehow "mirrowed" at the top row, so it is slightly visible but not very bight.

code/include/common.h

@@ -1,9 +1,12 @@
 #ifndef COMMON_H
 #define COMMON_H
 
+#include <array>
+
 #include "config.h"
 #include "rgb_display.h"
 #include "light_sensor.h"
+#include "temp_pressure_sensor.h"
 
 #include <WiFi.h>
 #include <PubSubClient.h>
@@ -31,9 +34,10 @@ extern HTTPClient http;
 extern unsigned long lastStatusSend;
 
 //Time of last sensor events
-extern unsigned long lastSensorRead;
-extern unsigned long lastLightRead;
+extern unsigned long lastI2cSensorRead;
 extern unsigned long lastLedBlink;
+extern unsigned long lastMqttSensorRead;
+extern unsigned long lastMqttSensorShow;
 
 //Log message persistence
 //Is a log message currently displayed?
@@ -53,8 +57,9 @@ extern MatrixPanel_I2S_DMA *dma_display;
 extern struct tm timeinfo;
 
 //Flags to trigger display section updates
+// fixme: differentiate between external (mqtt) and internal (i2c) sensors
 extern bool clockStartingUp;
-extern bool newSensorData;
+extern bool newMqttSensorData;
 extern bool sensorDead;
 
 //The actual sensor data
@@ -67,7 +72,10 @@ struct forecast_info {
   long time;
   int condition;
   float temp;
+  float temp_min;
+  float temp_max;
   int pressure;
+  int grnd_level;
   int humidity;
   float wind;
 };
@@ -77,8 +85,8 @@ struct city_info {
   long sunset;
   struct forecast_info forecasts[5];
 };
-//extern struct forecast_info forecasts[5];
-extern struct city_info my_weather;
+
+extern struct city_info myWeather;
 
 //Just a heartbeat for the watchdog...
 extern bool heartBeat;
@@ -90,6 +98,35 @@ extern BH1750 lightSensor;
 extern Adafruit_TSL2591 lightSensor;
 #endif
 
+// map sensors in the array to some name or Id !?
+enum SensorId {
+  CO2_HOME1 = 0, // at my desk
+
+};
+
+enum SensorType {
+  TEMPERATURE = 0, /* degree celcius             */
+  HUMIDITY,        /* (rel) percentage           */
+  PRESSURE,        /* barometric pressure in Pa. */
+  LIGHT,           /* light level in lux         */
+  CO2              /* co2 level ppm              */
+};
+
+struct MqttSensor
+{
+  SensorType type;
+  unsigned long lastRead;  // millis() timestamp
+  bool newData;            // mqtt data received
+  bool isDead;             // no new data within SENSOR_DEAD_INTERVAL_SEC
+
+  union {
+    int   val_i;
+    float val_f;
+  };
+};
+typedef std::array<MqttSensor, NUM_MQTT_SENSORS> MqttSensors;
+
+extern MqttSensors mySensors;
 
 // utility functions
 String epoch2String(unsigned long);

code/include/config.h

@@ -8,17 +8,20 @@
 #define MQTT_HOSTNAME "esp32-morphclock"
 #define MQTT_CLIENT_ID MQTT_HOSTNAME
 #define MQTT_REPORT_INTERVAL_MILLIS 30000
+#define MQTT_SENSOR_DISPLAY_INTERVALL_SEC 10
 
 // MQTT Topics
 #define MQTT_TEMPERATURE_SENSOR_TOPIC MQTT_CLIENT_ID "/sensor/temperature"
 #define MQTT_HUMIDITY_SENSOR_TOPIC    MQTT_CLIENT_ID "/sensor/humidity"
-#define MQTT_CO2_SENSOR_TOPIC         MQTT_CLIENT_ID "/co2_ampel1/co2ppm"
+//#define MQTT_CO2_SENSOR_TOPIC         MQTT_CLIENT_ID "/co2_ampel1/co2ppm"
+#define MQTT_CO2_SENSOR_TOPIC         "co2_ampel_7448/co2ppm"
 #define MQTT_STATUS_TOPIC             MQTT_CLIENT_ID "/state"
 #define MQTT_GENERAL_CMD_TOPIC        MQTT_CLIENT_ID "/cmd"
 #define MQTT_UPDATE_CMD_TOPIC         MQTT_CLIENT_ID "/cmd/update"
 //#define MQTT_VERSION_CMD_TOPIC        MQTT_CLIENT_ID "/cmd/version"
 #define MQTT_SEND_MESSAGE_TOPIC       MQTT_CLIENT_ID "/message/send"
-#define MQTT_BUZZER_CONFIG_TOPIC      MQTT_CLIENT_ID "/buzzer/config"
+#define MQTT_CONFIG_BUZZER_TOPIC      MQTT_CLIENT_ID "/config/buzzer"
+#define MQTT_CONFIG_BRIGHTNESS_TOPIC  MQTT_CLIENT_ID "/config/brightness"
 
 // How often we refresh the time from the NTP server
 #define NTP_REFRESH_INTERVAL_SEC 3600
@@ -82,7 +85,7 @@
 #define LIGHT_DATA_COLOR ((0x00 & 0xF8) << 8) | ((0xFF & 0xFC) << 3) | (0x00 >> 3)
 //Maximum lux value that will be accepted as valid (sometimes the sensor will return erroneous values)
 #define LIGHT_THRESHOLD 54612.5
-#define LIGHT_READ_INTERVAL_SEC 3
+#define I2C_READ_INTERVAL_SEC 5
 
 // Log messages at the bottom
 #define LOG_MESSAGE_COLOR ((0xFF & 0xF8) << 8) | ((0x00 & 0xFC) << 3) | (0x00 >> 3)
@@ -97,5 +100,8 @@
 // (limited by API throttling)
 #define WEATHER_REFRESH_INTERVAL_SEC 900
 
+// number of mqtt sensor readings
+#define NUM_MQTT_SENSORS 3
+
 
 #endif

code/include/config_64x64.h

@@ -41,6 +41,24 @@
 #define SENSOR_DATA_WIDTH ((PANEL_WIDTH / 2) - 2)
 #define SENSOR_DATA_HEIGHT 16
 
+// todo: change to SENSOR_1_DATA x/y, SENSOR_2_DATA x/y, and SENSOR_3_DATA x/y
+#define SENSOR_1_DATA_X 0
+#define SENSOR_1_DATA_Y 0
+#define SENSOR_1_DATA_WIDTH ((PANEL_WIDTH / 2) - 2)
+#define SENSOR_1_DATA_HEIGHT 8
+
+#define SENSOR_2_DATA_X 0
+#define SENSOR_2_DATA_Y 8
+#define SENSOR_2_DATA_WIDTH ((PANEL_WIDTH / 2) - 2)
+#define SENSOR_2_DATA_HEIGHT 8
+
+#define SENSOR_3_DATA_X 0
+#define SENSOR_3_DATA_Y 16
+#define SENSOR_3_DATA_WIDTH ((PANEL_WIDTH / 2) - 2)
+#define SENSOR_3_DATA_HEIGHT 8
+
+
+
 // ... FIXME: adjust to 64x64 if we want to use it (merged from bogdan)
 // Weather - today, and 5-day forecast
 #define WEATHER_TODAY_X 56

code/include/main.h

@@ -5,5 +5,6 @@
 void displayUpdater();    // Ticker callback
 //void sensorUpdater();     // Ticker callback
 void lightUpdate();
+void i2cSensorUpdate();
 
 #endif

code/include/rgb_display.h

@@ -1,7 +1,11 @@
 #ifndef RGB_DISPLAY_H
 #define RGB_DISPLAY_H
 
+
 #include "config.h"
+//#include "common.h"
+//struct MqttSensor;
+//typedef std::array<MqttSensor, NUM_MQTT_SENSORS> MqttSensors;
 
 /* Custom board
 #define R1_PIN 25

code/include/temp_pressure_sensor.h

@@ -0,0 +1,14 @@
+#ifndef TEMP_PRESSURE_SENSOR_H
+#define TEMP_PRESSURE_SENSOR_H
+
+#include <Wire.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BMP280.h>
+
+
+void configureTempSensor();
+float getTempData();
+float getPressureData();
+
+#endif
+

code/include/version.h

@@ -1,6 +1,6 @@
 #ifndef _PROG_VERSION_H__
 #define _PROG_VERSION_H__
 
-const char* PROG_VERSION = "0.1.1";
+const char* PROG_VERSION = "0.1.3";
 
 #endif

code/platformio.ini

@@ -59,4 +59,5 @@ build_flags =
 	-DMATRIX_HEIGHT=64
 	-DMATRIX_WIDTH=64
 	-DLIGHT_SENSOR_BH1750=1
+	-DTEMP_SENSOR_BMP280=1
 ;	-DLIGHT_SENSOR_TSL2591=1

code/src/clock.cpp

@@ -89,5 +89,5 @@ void displayDate() {
 
     // fixme: for some reason the minute update clear the col 0 of the sensor data (temp),
     // this call fixes the symptom ... but I don't know why we have that problem in the first place
-    displayWeatherData(my_weather);
+    displayWeatherData(myWeather);
 }

code/src/common.cpp

@@ -21,11 +21,12 @@ unsigned long lastStatusSend = 0;
 
 //Time of last client.loop()
 unsigned long lastLoop = 0;
-//Time of last weather sensor data receive
-unsigned long lastSensorRead = 0;
 //Time of last light sensor read
-unsigned long lastLightRead = 0;
-
+unsigned long lastI2cSensorRead = 0;
+//Time of last mqtt (weather) sensor data receive
+unsigned long lastMqttSensorRead = 0;
+// Time of last mqtt sensor data display update
+unsigned long lastMqttSensorShow = 0;
 
 // NTP
 const int8_t timeZone = 2;
@@ -39,7 +40,7 @@ MatrixPanel_I2S_DMA *dma_display = nullptr;
 
 // Flags to trigger display updates
 bool clockStartingUp = true;
-bool newSensorData = false;
+bool newMqttSensorData = false;
 bool sensorDead = true;
 
 //Heartbeat marker
@@ -59,7 +60,10 @@ int sensorCo2Mqtt;
 
 // 5-day forecast ids/icons (https://openweathermap.org/weather-conditions)
 //struct forecast_info forecasts[5];
-struct city_info my_weather;
+struct city_info myWeather;
+
+// NUM_MQTT_SENSORS sensors
+MqttSensors mySensors;
 
 String epoch2String(unsigned long t) {
   char buf[32];