From cad8164882cb08ff7a0d83bc73d18f8c3ade21e6 Mon Sep 17 00:00:00 2001 From: arendst Date: Wed, 6 Dec 2017 13:59:33 +0100 Subject: [PATCH] Add sht3x_v2 for testing Possibly fix loss of sht3x sensor (#1314) --- sonoff/user_config.h | 11 +-- sonoff/xsns_14_sht3x_v2.ino | 144 ++++++++++++++++++++++++++++++++++++ 2 files changed, 150 insertions(+), 5 deletions(-) create mode 100644 sonoff/xsns_14_sht3x_v2.ino diff --git a/sonoff/user_config.h b/sonoff/user_config.h index 4ea4bb232..5a35fcfd0 100644 --- a/sonoff/user_config.h +++ b/sonoff/user_config.h @@ -168,11 +168,12 @@ //#define USE_DS18x20_LEGACY // Optional for more than one DS18x20 sensors with dynamic scan using library OneWire (+1k5 code) #define USE_I2C // I2C using library wire (+10k code, 0k2 mem) - Disable by // - #define USE_SHT // Add I2C emulating code for SHT1X sensor -// #define USE_SHT3X // Add I2C code for SHT3x sensor - #define USE_HTU // Add I2C code for HTU21/SI7013/SI7020/SI7021 sensor - #define USE_BMP // Add I2C code for BMP/BME280 sensor - #define USE_BH1750 // Add I2C code for BH1750 sensor + #define USE_SHT // Add I2C emulating code for SHT1X sensor (+1k4 code) +// #define USE_SHT3X // Add I2C code for SHT3x sensor based on Adafruit (+0k7 code) +// #define USE_SHT3X_V2 // Add I2C code for SHT3x sensor based on EspEasy (+0k7 code) + #define USE_HTU // Add I2C code for HTU21/SI7013/SI7020/SI7021 sensor (+1k5 code) + #define USE_BMP // Add I2C code for BMP/BME280 sensor (+4k code) + #define USE_BH1750 // Add I2C code for BH1750 sensor (+0k5 code) // #define USE_VEML6070 // Add I2C code for VEML6070 sensor (+0k5 code) // #define USE_ADS1115 // Add I2C code for ADS1115 16 bit A/D converter based on Adafruit ADS1x15 library (library not needed) (+0k7 code) // #define USE_ADS1115_I2CDEV // Add I2C code for ADS1115 16 bit A/D converter using library i2cdevlib-Core and i2cdevlib-ADS1115 (+2k code) diff --git a/sonoff/xsns_14_sht3x_v2.ino b/sonoff/xsns_14_sht3x_v2.ino new file mode 100644 index 000000000..b048c0c0f --- /dev/null +++ b/sonoff/xsns_14_sht3x_v2.ino @@ -0,0 +1,144 @@ +/* + xsns_14_sht3x.ino - SHT3X temperature and humidity sensor support for Sonoff-Tasmota + + Copyright (C) 2017 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 . +*/ + +#ifdef USE_I2C +#ifdef USE_SHT3X_V2 +/*********************************************************************************************\ + * SHT3X - Temperature and Humidy + * + * Required library: none but based on EspEasy plugin 68 + * + * I2C Address: 0x44 or 0x45 +\*********************************************************************************************/ + +#define SHT3X_ADDR_GND 0x44 // address pin low (GND) +#define SHT3X_ADDR_VDD 0x45 // address pin high (VDD) + +uint8_t sht3x_type = 0; +uint8_t sht3x_address; +uint8_t sht3x_addresses[] = { SHT3X_ADDR_GND, SHT3X_ADDR_VDD }; + +bool Sht3xInit() +{ + if (sht3x_type) { + return I2cWrite8(sht3x_address, 0x20, 0x32); // Periodic 0.5mps and repeatability high + } + return false; +} + +bool Sht3xRead(float &t, float &h) +{ + unsigned int data[6]; + + t = NAN; + h = NAN; + + I2cWrite8(sht3x_address, 0xE0, 0x00); // Fetch data + Wire.requestFrom(sht3x_address, (uint8_t)6); + if (Wire.available() != 6) { + return false; + } + // Read 6 bytes of data + // cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc + for (uint8_t i = 0; i < 6; i++) { + data[i] = Wire.read(); + } + t = ConvertTemp((float)((((data[0] << 8) | data[1]) * 175) / 65535.0) - 45); + h = (float)((((data[3] << 8) | data[4]) * 100) / 65535.0); + return (!isnan(t) && !isnan(h)); +} + +/********************************************************************************************/ + +void Sht3xDetect() +{ + if (sht3x_type) { + return; + } + + sht3x_type = 1; + for (byte i = 0; i < sizeof(sht3x_addresses); i++) { + sht3x_address = sht3x_addresses[i]; + if (Sht3xInit()) { + snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "SHT3X", sht3x_address); + AddLog(LOG_LEVEL_DEBUG); + return; + } + } + sht3x_type = 0; +} + +void Sht3xShow(boolean json) +{ + if (sht3x_type) { + float t; + float h; + if (Sht3xRead(t, h)) { + char temperature[10]; + char humidity[10]; + dtostrfd(t, Settings.flag2.temperature_resolution, temperature); + dtostrfd(h, Settings.flag2.humidity_resolution, humidity); + + if (json) { + snprintf_P(mqtt_data, sizeof(mqtt_data), JSON_SNS_TEMPHUM, mqtt_data, "SHT3X", temperature, humidity); +#ifdef USE_DOMOTICZ + DomoticzTempHumSensor(temperature, humidity); +#endif // USE_DOMOTICZ +#ifdef USE_WEBSERVER + } else { + snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_TEMP, mqtt_data, "SHT3X", temperature, TempUnit()); + snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_HUM, mqtt_data, "SHT3X", humidity); +#endif // USE_WEBSERVER + } + } + } +} + +/*********************************************************************************************\ + * Interface +\*********************************************************************************************/ + +#define XSNS_14 + +boolean Xsns14(byte function) +{ + boolean result = false; + + if (i2c_flg) { + switch (function) { + case FUNC_XSNS_INIT: + Sht3xDetect(); + break; +// case FUNC_XSNS_PREP: +// break; + case FUNC_XSNS_JSON_APPEND: + Sht3xShow(1); + break; +#ifdef USE_WEBSERVER + case FUNC_XSNS_WEB: + Sht3xShow(0); + break; +#endif // USE_WEBSERVER + } + } + return result; +} + +#endif // USE_SHT3X_V2 +#endif // USE_I2C \ No newline at end of file