From 026b932554395c82b0a2db8e56ecd708afc540d1 Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Tue, 17 Mar 2020 11:10:39 +0100
Subject: [PATCH] Add Dew Point to BME sensors

Add Dew Point to BME sensors
---
 tasmota/xsns_09_bmp.ino | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tasmota/xsns_09_bmp.ino b/tasmota/xsns_09_bmp.ino
index 057dac9df..220608160 100644
--- a/tasmota/xsns_09_bmp.ino
+++ b/tasmota/xsns_09_bmp.ino
@@ -541,14 +541,17 @@ void BmpShow(bool json)
       dtostrfd(bmp_sealevel, Settings.flag2.pressure_resolution, sea_pressure);
       char humidity[33];
       dtostrfd(bmp_sensors[bmp_idx].bmp_humidity, Settings.flag2.humidity_resolution, humidity);
+      float f_dewpoint = CalcTempHumToDew(bmp_temperature, bmp_sensors[bmp_idx].bmp_humidity);
+      char dewpoint[33];
+      dtostrfd(f_dewpoint, Settings.flag2.temperature_resolution, dewpoint);
 #ifdef USE_BME680
       char gas_resistance[33];
       dtostrfd(bmp_sensors[bmp_idx].bmp_gas_resistance, 2, gas_resistance);
 #endif  // USE_BME680
 
       if (json) {
-        char json_humidity[40];
-        snprintf_P(json_humidity, sizeof(json_humidity), PSTR(",\"" D_JSON_HUMIDITY "\":%s"), humidity);
+        char json_humidity[80];
+        snprintf_P(json_humidity, sizeof(json_humidity), PSTR(",\"" D_JSON_HUMIDITY "\":%s,\"" D_JSON_DEWPOINT "\":%s"), humidity, dewpoint);
         char json_sealevel[40];
         snprintf_P(json_sealevel, sizeof(json_sealevel), PSTR(",\"" D_JSON_PRESSUREATSEALEVEL "\":%s"), sea_pressure);
 #ifdef USE_BME680
@@ -588,6 +591,7 @@ void BmpShow(bool json)
         WSContentSend_PD(HTTP_SNS_TEMP, name, temperature, TempUnit());
         if (bmp_sensors[bmp_idx].bmp_model >= 2) {
           WSContentSend_PD(HTTP_SNS_HUM, name, humidity);
+          WSContentSend_PD(HTTP_SNS_DEW, name, dewpoint, TempUnit());
         }
         WSContentSend_PD(HTTP_SNS_PRESSURE, name, pressure, PressureUnit().c_str());
         if (Settings.altitude != 0) {