Add support for Honeywell I2C HIH series

Add support for Honeywell I2C HIH series Humidity and Temperetaure sensor (#6808)

tasmota/_changelog.ino

@@ -1,6 +1,7 @@
 /*********************************************************************************************\
  * 7.0.0.2 20191102
  * Add command WebColor19 to control color of Module and Name (#6811)
+ * Add support for Honeywell I2C HIH series Humidity and Temperetaure sensor (#6808)
  *
  * 7.0.0.1 20191027
  * Remove references to versions before 6.0

tasmota/my_user_config.h

@@ -402,6 +402,7 @@
 //  #define USE_CHIRP                              // Enable CHIRP soil moisture sensor (variable I2C address, default 0x20)
 //  #define USE_PAJ7620                            // Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
 //  #define USE_PCF8574                            // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x27 and 0x38 - 0x3F) (+1k9 code)
+//  #define USE_HIH6                               // Enable Honeywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
 
 //  #define USE_DISPLAY                            // Add I2C Display Support (+2k code)
     #define USE_DISPLAY_MODES1TO5                // Enable display mode 1 to 5 in addition to mode 0

tasmota/support_features.ino

@@ -480,7 +480,9 @@ void GetFeatures(void)
 #ifdef USE_ARDUINO_SLAVE
   feature5 |= 0x00010000;  // xdrv_31_arduino_slave.ino
 #endif
-//  feature5 |= 0x00020000;
+#ifdef USE_HIH6
+  feature5 |= 0x00020000;  // xsns_55_hih_series.ino
+#endif
 //  feature5 |= 0x00040000;
 //  feature5 |= 0x00080000;
 

tasmota/tasmota_post.h

@@ -157,6 +157,7 @@ char* ToHex_P(const unsigned char * in, size_t insz, char * out, size_t outsz, c
 //#define USE_CHIRP                                // Enable CHIRP soil moisture sensor (variable I2C address, default 0x20)
 //#define USE_PAJ7620                              // Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
 //#define USE_PCF8574                              // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x27 and 0x38 - 0x3F) (+1k9 code)
+//#define USE_HIH6                                 // Enable Honywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
 
 #define USE_MHZ19                                // Add support for MH-Z19 CO2 sensor (+2k code)
 #define USE_SENSEAIR                             // Add support for SenseAir K30, K70 and S8 CO2 sensor (+2k3 code)

tasmota/xsns_55_hih_series.ino

@@ -0,0 +1,162 @@
+/*
+  xsns_55_hih_series.ino - Honeywell HIH series temperature and humidity sensor support for Tasmota
+
+  Copyright (C) 2019  Theo Arends
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef USE_I2C
+#ifdef USE_HIH6
+/*********************************************************************************************\
+ * HIH6130 - Temperature and Humidity
+ *
+ * https://sensing.honeywell.com/HIH6130-021-001-humidity-sensors
+ * https://sensing.honeywell.com/i2c-comms-humidicon-tn-009061-2-en-final-07jun12.pdf
+ * https://github.com/ControlEverythingCommunity/HIH6130/blob/master/Arduino/HIH6130.ino
+ *
+ * I2C Address: 0x27
+\*********************************************************************************************/
+
+#define XSNS_55             55
+
+#define HIH6_ADDR           0x27
+
+struct HIH6 {
+  float temperature = 0;
+  float humidity = 0;
+  uint8_t valid = 0;
+  uint8_t type = 0;
+  char types[4] = "HIH";
+} Hih6;
+
+bool Hih6Read(void)
+{
+  Wire.beginTransmission(HIH6_ADDR);
+  Wire.write(0x00);                                   // Select data register
+  if (Wire.endTransmission() != 0) { return false; }  // In case of error
+
+//  delay(40);                                          // Wait for Valid data or use Stale data
+
+  uint8_t data[4];
+  Wire.requestFrom(HIH6_ADDR, 4);
+  if (4 == Wire.available()) {
+    data[0] = Wire.read();                            // Status and Humidity msb
+    data[1] = Wire.read();                            // Humidity lsb
+    data[2] = Wire.read();                            // Temp msb
+    data[3] = Wire.read();                            // Temp lsb
+  } else { return false; }
+
+//  uint8_t status = data[0] >> 6;  // 0 = Valid data, 1 = Stale data, 2 = Command mode, 3 = Not used
+
+  // Convert the data to 14-bits
+  int temp = ((data[2] * 256) + (data[3] & 0xFC)) / 4;
+  Hih6.temperature = ConvertTemp((temp / 16384.0) * 165.0 - 40.0);
+  Hih6.humidity = ConvertHumidity(((((data[0] & 0x3F) * 256) + data[1]) * 100.0) / 16383.0);
+
+  Hih6.valid = SENSOR_MAX_MISS;
+  return true;
+}
+
+/********************************************************************************************/
+
+void Hih6Detect(void)
+{
+  if (Hih6.type) { return; }
+
+  Hih6.type = Hih6Read();
+  if (Hih6.type) {
+    AddLog_P2(LOG_LEVEL_DEBUG, S_LOG_I2C_FOUND_AT, Hih6.types, HIH6_ADDR);
+  }
+}
+
+void Hih6EverySecond(void)
+{
+  if ((100 - XSNS_55) == (uptime %100)) {
+    // 1mS
+    Hih6Detect();
+  }
+  else if (uptime &1) {
+    // HIH6130: 30mS
+    if (Hih6.type) {
+      if (!Hih6Read()) {
+        AddLogMissed(Hih6.types, Hih6.valid);
+//        if (!Hih6.valid) { Hih6.type = 0; }
+      }
+    }
+  }
+}
+
+void Hih6Show(bool json)
+{
+  if (Hih6.valid) {
+    char temperature[33];
+    dtostrfd(Hih6.temperature, Settings.flag2.temperature_resolution, temperature);
+    char humidity[33];
+    dtostrfd(Hih6.humidity, Settings.flag2.humidity_resolution, humidity);
+
+    if (json) {
+      ResponseAppend_P(JSON_SNS_TEMPHUM, Hih6.types, temperature, humidity);
+#ifdef USE_DOMOTICZ
+      if (0 == tele_period) {
+        DomoticzTempHumSensor(temperature, humidity);
+      }
+#endif  // USE_DOMOTICZ
+#ifdef USE_KNX
+      if (0 == tele_period) {
+        KnxSensor(KNX_TEMPERATURE, Hih6.temperature);
+        KnxSensor(KNX_HUMIDITY, Hih6.humidity);
+      }
+#endif  // USE_KNX
+#ifdef USE_WEBSERVER
+    } else {
+      WSContentSend_PD(HTTP_SNS_TEMP, Hih6.types, temperature, TempUnit());
+      WSContentSend_PD(HTTP_SNS_HUM, Hih6.types, humidity);
+#endif  // USE_WEBSERVER
+    }
+  }
+}
+
+/*********************************************************************************************\
+ * Interface
+\*********************************************************************************************/
+
+bool Xsns55(uint8_t function)
+{
+  bool result = false;
+
+  if (i2c_flg) {
+    switch (function) {
+      case FUNC_EVERY_SECOND:
+        Hih6EverySecond();
+        break;
+      case FUNC_JSON_APPEND:
+        Hih6Show(1);
+        break;
+#ifdef USE_WEBSERVER
+      case FUNC_WEB_SENSOR:
+        Hih6Show(0);
+        break;
+#endif  // USE_WEBSERVER
+      case FUNC_INIT:
+        Hih6Detect();
+        break;
+    }
+  }
+  return result;
+}
+
+#endif  // USE_HIH6
+#endif  // USE_I2C
+

tools/decode-status.py

@@ -185,7 +185,7 @@ a_features = [[
     "USE_INA226","USE_A4988_STEPPER","USE_DDS2382","USE_SM2135",
     "USE_SHUTTER","USE_PCF8574","USE_DDSU666","USE_DEEPSLEEP",
     "USE_SONOFF_SC","USE_SONOFF_RF","USE_SONOFF_L1","USE_EXS_DIMMER",
-    "USE_ARDUINO_SLAVE","","","",
+    "USE_ARDUINO_SLAVE","USE_HIH6","","",
     "","","","",
     "","","","",
     "","","",""