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Add support for sensor SHT3x (#1314)

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* Add support for sensor SHT3x (#1314)
This commit is contained in:
arendst 2017-12-28 17:08:32 +01:00
parent 20619ac41b
commit 1e336f5e20
5 changed files with 17 additions and 330 deletions
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1
sonoff/_releasenotes.ino
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@ -1,6 +1,7 @@
/* 5.10.0e
* Add Italian language file (#1449)
* Fix Wemo Emulation once again closest to issue (#1357)
* Add support for sensor SHT3x
*
* 5.10.0d
* Renamed commands Color2,3,4 to Color3,4,5

4
sonoff/user_config.h
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@ -173,9 +173,7 @@
// -- I2C sensors ---------------------------------
#define USE_I2C // I2C using library wire (+10k code, 0k2 mem, 124 iram)
#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_SHT3X_V3 // Add I2C code for SHT3x sensor based on Wemos (+0k7 code)
#define USE_SHT3X // Add I2C code for SHT3x sensor (+0k6 code)
#define USE_HTU // Add I2C code for HTU21/SI7013/SI7020/SI7021 sensor (+1k5 code)
#define USE_BMP // Add I2C code for BMP085/BMP180/BMP280/BME280 sensor (+4k code)
// #define USE_BME680 // Add additional support for BME680 sensor using Adafruit Sensor and BME680 libraries (+6k code)

44
sonoff/xsns_14_sht3x.ino
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@ -22,26 +22,16 @@
/*********************************************************************************************\
* SHT3X - Temperature and Humidy
*
* Required library: none but based on Adafruit Industries SHT31 library
*
* I2C Address: 0x44 or 0x45
\*********************************************************************************************/
#define SHT3X_ADDR_GND 0x44 // address pin low (GND)
#define SHT3X_ADDR_VDD 0x45 // address pin high (VDD)
#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 Sht3xConvert()
{
if (sht3x_type) {
return I2cWrite8(sht3x_address, 0x2C, 0x06);
}
return false;
}
bool Sht3xRead(float &t, float &h)
{
unsigned int data[6];
@ -49,22 +39,20 @@ bool Sht3xRead(float &t, float &h)
t = NAN;
h = NAN;
Wire.requestFrom(sht3x_address, (uint8_t)6);
if (Wire.available() != 6) {
Wire.beginTransmission(sht3x_address);
Wire.write(0x2C); // Enable clock stretching
Wire.write(0x06); // High repeatability
if (Wire.endTransmission() != 0) { // Stop I2C transmission
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();
}
// delay(50);
// if (Wire.available() != 0) {
// return false;
// }
delay(30); // Timing verified with logic analyzer (10 is to short)
Wire.requestFrom(sht3x_address, (uint8_t)6); // Request 6 bytes of data
for (int i = 0; i < 6; i++) {
data[i] = Wire.read(); // cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc
};
t = ConvertTemp((float)((((data[0] << 8) | data[1]) * 175) / 65535.0) - 45);
h = (float)((((data[3] << 8) | data[4]) * 100) / 65535.0);
return true;
return (!isnan(t) && !isnan(h));
}
/********************************************************************************************/
@ -75,10 +63,12 @@ void Sht3xDetect()
return;
}
float t;
float h;
sht3x_type = 1;
for (byte i = 0; i < sizeof(sht3x_addresses); i++) {
sht3x_address = sht3x_addresses[i];
if (Sht3xConvert()) {
if (Sht3xRead(t, h)) {
snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "SHT3X", sht3x_address);
AddLog(LOG_LEVEL_DEBUG);
return;
@ -128,16 +118,12 @@ boolean Xsns14(byte function)
case FUNC_INIT:
Sht3xDetect();
break;
case FUNC_PREP_BEFORE_TELEPERIOD:
Sht3xConvert();
break;
case FUNC_JSON_APPEND:
Sht3xShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_APPEND:
Sht3xShow(0);
Sht3xConvert();
break;
#endif // USE_WEBSERVER
}

142
sonoff/xsns_14_sht3x_v2.ino
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@ -1,142 +0,0 @@
/*
xsns_14_sht3x.ino - SHT3X temperature and humidity sensor support for Sonoff-Tasmota
Copyright (C) 2018 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_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 true;
}
/********************************************************************************************/
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_INIT:
Sht3xDetect();
break;
case FUNC_JSON_APPEND:
Sht3xShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_APPEND:
Sht3xShow(0);
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_SHT3X_V2
#endif // USE_I2C

156
sonoff/xsns_14_sht3x_v3.ino
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@ -1,156 +0,0 @@
/*
xsns_14_sht3x.ino - SHT3X temperature and humidity sensor support for Sonoff-Tasmota
Copyright (C) 2018 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_SHT3X_V3
/*********************************************************************************************\
* SHT3X - Temperature and Humidy
*
* Required library: none but based on Wemos library
*
* 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 Sht3xConvert()
{
if (sht3x_type) {
// Start I2C Transmission
Wire.beginTransmission(sht3x_address);
// Send measurement command
Wire.write(0x2C);
Wire.write(0x06);
// Stop I2C transmission
if (Wire.endTransmission() != 0) {
return false;
}
}
return true;
}
bool Sht3xRead(float &t, float &h)
{
unsigned int data[6];
t = NAN;
h = NAN;
// Request 6 bytes of data
Wire.requestFrom(sht3x_address, (uint8_t)6);
// Read 6 bytes of data
// cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc
for (int i = 0; i < 6; i++) {
data[i] = Wire.read();
};
delay(50);
if (Wire.available() != 0) {
return false;
}
// Convert the data
t = ConvertTemp((float)((((data[0] << 8) | data[1]) * 175) / 65535.0) - 45);
h = (float)((((data[3] << 8) | data[4]) * 100) / 65535.0);
return true;
}
/********************************************************************************************/
void Sht3xDetect()
{
if (sht3x_type) {
return;
}
sht3x_type = 1;
for (byte i = 0; i < sizeof(sht3x_addresses); i++) {
sht3x_address = sht3x_addresses[i];
if (Sht3xConvert()) {
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_INIT:
Sht3xDetect();
break;
case FUNC_PREP_BEFORE_TELEPERIOD:
Sht3xConvert();
break;
case FUNC_JSON_APPEND:
Sht3xShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_APPEND:
Sht3xShow(0);
Sht3xConvert();
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_SHT3X_V3
#endif // USE_I2C