added BME280 sensor

ESPsensor/ESP-Now.ino

@@ -0,0 +1,32 @@
+void init_espnow()
+{
+    if (esp_now_init() != 0)
+        goto_sleep();
+
+    esp_now_set_kok(kok, 16);
+
+    esp_now_set_self_role(ESP_NOW_ROLE_COMBO);
+
+    esp_now_add_peer(gmac, ESP_NOW_ROLE_COMBO, WIFI_CHANNEL, key, 16);
+    esp_now_set_peer_key(gmac, key, 16);
+
+    esp_now_register_send_cb(txcb);
+    esp_now_register_recv_cb(rxcb);
+}
+
+void send_data()
+{
+    uint8_t byteArray[sizeof(tx)];
+    memcpy(byteArray, &tx, sizeof(tx));
+    esp_now_send(gmac, byteArray, sizeof(tx));
+
+    SENT = true;
+}
+
+void txcb(uint8_t *mac, uint8_t sendStatus)
+{
+    if (sendStatus == 0)
+        ACK = true;
+}
+
+void rxcb(uint8_t *senderMac, uint8_t *incomingData, uint8_t len) {}

ESPsensor/ESPsensor.ino

@@ -10,8 +10,10 @@ extern "C"
 
 #include <Wire.h>
 #include <SI7021.h>
+#include <BME280_t.h>
 
 SI7021 sensor;
+BME280<> BMESensor;
 
 void initVariant()
 {
@@ -23,26 +25,15 @@ void initVariant()
 
 void setup()
 {
-  if (sensor.begin(2, 0))
-  // if (sensor.begin(0, 2))
-    SI = true;
-
-  if (esp_now_init() != 0)
-    goto_sleep();
-
-  esp_now_set_kok(kok, 16);
-
-  esp_now_set_self_role(ESP_NOW_ROLE_COMBO);
-
-  esp_now_add_peer(gmac, ESP_NOW_ROLE_COMBO, WIFI_CHANNEL, key, 16);
-  esp_now_set_peer_key(gmac, key, 16);
-
-  esp_now_register_send_cb(txcb);
-  esp_now_register_recv_cb(rxcb);
+  init_espnow();
+  init_sensors();
 }
 
 void loop()
 {
+  if (!PREP)
+    prepare_data();
+
   if (!SENT)
     send_data();
 
@@ -53,41 +44,12 @@ void loop()
     goto_sleep();
 }
 
-void send_data()
-{
-  char tx[128];
-
-  float tmp = 0;
-  float hum = 0;
-  float vin = 0;
-
-  if (SI)
-  {
-    si7021_env data = sensor.getHumidityAndTemperature();
-
-    tmp = (float)data.celsiusHundredths / 100;
-    hum = (float)data.humidityBasisPoints / 100;
-  }
-  vin = (float)ESP.getVcc() / FACTOR;
-
-  sprintf(tx, "{\"t\":\"%s\",\"n\":\"%s\",\"ID\":\"%x\",\"v\":%d,\"tmp\":%.2f,\"hum\":%.2f,\"vin\":%.2f}", TIP, NAME, ESP.getChipId(), VERSION, tmp, hum, vin);
-
-  uint8_t byteArray[sizeof(tx)];
-  memcpy(byteArray, &tx, sizeof(tx));
-  esp_now_send(gmac, byteArray, sizeof(tx));
-
-  SENT = true;
-}
-
-void txcb(uint8_t *mac, uint8_t sendStatus)
+void goto_sleep()
 {
-  if (sendStatus == 0)
-    ACK = true;
+  ESP.deepSleepInstant(SLEEP, RF_NO_CAL);
 }
 
-void rxcb(uint8_t *senderMac, uint8_t *incomingData, uint8_t len) {}
-
-void goto_sleep()
+void goto_sleep_short()
 {
-  ESP.deepSleepInstant(SLEEP, RF_NO_CAL);
+  ESP.deepSleepInstant(60 * 1000 * 1000, RF_NO_CAL);
 }

ESPsensor/example_private.h

@@ -84,6 +84,7 @@ uint8_t key[16] = {0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0
 // sleep time (message rate)
 /////////////////////////////////////////////////
 #define SLEEP 10 * 60 * 1000 * 1000 // 1 minute
+//            min  sec  msec   usec
 /////////////////////////////////////////////////
 
 /////////////////////////////////////////////////
@@ -101,7 +102,23 @@ uint8_t key[16] = {0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0xFE, 0xED, 0
 /////////////////////////////////////////////////
 // flags
 /////////////////////////////////////////////////
+bool PREP = false; // prepare data flag
 bool SENT = false; // data sent flag
 bool ACK = false;  // data sent ok flag
 bool SI = false;   // SI7021 present
+bool BME = false;  // BME280 present
+bool DS = false;   // DS18B20 present
+/////////////////////////////////////////////////
+
+char tx[128];
+
+/////////////////////////////////////////////////
+// BME280
+/////////////////////////////////////////////////
+// input your correct sensor altitude in meters
+#define MYALTITUDE 100 // altitude in meters
+// this value is needed for correct normalized
+// pressure value (USA & Canada)
+//
+// OpenWeatherMap reports normalized pres. for Europe
 /////////////////////////////////////////////////

ESPsensor/sensors.ino

@@ -0,0 +1,52 @@
+void init_sensors()
+{
+    if (sensor.begin(2, 0))
+    {
+        SI = true;
+        return;
+    }
+
+    if (BMESensor.begin())
+    {
+        BME = true;
+        return;
+    }
+
+    // add DS18B20 init here
+
+    if (!SI && !BME && !DS)
+        goto_sleep();
+}
+
+void prepare_data()
+{
+
+    float vin = (float)ESP.getVcc() / FACTOR;
+
+    if (SI)
+    {
+        si7021_env data = sensor.getHumidityAndTemperature();
+
+        float temp = data.celsiusHundredths / 100.0F;
+        float hum = data.humidityBasisPoints / 100.0F;
+        float dew = 243.04 * (log(hum / 100.0) + ((17.625 * temp) / (243.04 + temp))) / (17.625 - log(hum / 100.0) - ((17.625 * temp) / (243.04 + temp)));
+
+        sprintf(tx, "{\"t\":\"%s\",\"n\":\"%s\",\"ID\":\"%x\",\"v\":%d,\"tmp\":%.2f,\"hum\":%.2f,\"dew\":%.2f,\"vin\":%.2f}", TIP, NAME, ESP.getChipId(), VERSION, temp, hum, dew, vin);
+    }
+
+    if (BME)
+    {
+        BMESensor.refresh();
+        // on the first reading, only after power down, BME280 reports erroneous values.
+        // will need to discard the first reading in next version
+
+        float temp = BMESensor.temperature;
+        float hum = BMESensor.humidity;
+        float dew = 243.04 * (log(hum / 100.0) + ((17.625 * temp) / (243.04 + temp))) / (17.625 - log(hum / 100.0) - ((17.625 * temp) / (243.04 + temp)));
+        float relativepressure = BMESensor.seaLevelForAltitude(MYALTITUDE) / 100.0F;
+
+        sprintf(tx, "{\"t\":\"%s\",\"n\":\"%s\",\"ID\":\"%x\",\"v\":%d,\"tmp\":%.2f,\"hum\":%.2f,\"dew\":%.2f,\"prs\":%.2f,\"prn\":%.2f,\"vin\":%.2f}", TIP, NAME, ESP.getChipId(), VERSION, temp, hum, dew, BMESensor.pressure / 100.0F, relativepressure, vin);
+    }
+
+    PREP = true;
+}

platformio.ini

@@ -24,7 +24,8 @@ board_build.f_cpu           = 80000000L
 monitor_speed               = 115200
 upload_speed                = 921600
 upload_resetmethod          = nodemcu
-lib_deps                    = 536 ;Si7021@06fadfb576
+lib_deps                    = 536 ; Si7021@06fadfb576
+                              1554 ; BME280_Light@600667f3a6
 
 
 build_flags = -D VERSION=1