Added new sensor - HTU21D(F)

Sensors.c

@@ -79,6 +79,7 @@ static const SensorType* sensorTypes[] = {
     &Dallas,
     &AM2320_SW,
     &AM2320_I2C,
+    &HTU21x,
     &AHT10,
     &SHT30,
     &GXHT30,

Sensors.h

@@ -324,4 +324,5 @@ const GPIO*
 #include "./sensors/DHT20.h"
 #include "./sensors/SHT30.h"
 #include "./sensors/BMP180.h"
+#include "./sensors/HTU21x.h"
 #endif

sensors/HTU21x.c

@@ -0,0 +1,105 @@
+/*
+    Unitemp - Universal temperature reader
+    Copyright (C) 2023  Victor Nikitchuk (https://github.com/quen0n)
+
+    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 <https://www.gnu.org/licenses/>.
+*/
+#include "HTU21x.h"
+#include "../interfaces/I2CSensor.h"
+
+const SensorType HTU21x = {
+    .typename = "HTU21x",
+    .interface = &I2C,
+    .datatype = UT_DATA_TYPE_TEMP_HUM,
+    .pollingInterval = 250,
+    .allocator = unitemp_HTU21x_alloc,
+    .mem_releaser = unitemp_HTU21x_free,
+    .initializer = unitemp_HTU21x_init,
+    .deinitializer = unitemp_HTU21x_deinit,
+    .updater = unitemp_HTU21x_update};
+
+static uint8_t checkCRC(uint16_t data) {
+    for(uint8_t i = 0; i < 16; i++) {
+        if(data & 0x8000)
+            data = (data << 1) ^ 0x13100;
+        else
+            data <<= 1;
+    }
+    return (data >> 8);
+}
+
+bool unitemp_HTU21x_alloc(Sensor* sensor, char* args) {
+    UNUSED(args);
+    I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
+
+    //Адреса на шине I2C (7 бит)
+    i2c_sensor->minI2CAdr = 0x40 << 1;
+    i2c_sensor->maxI2CAdr = 0x40 << 1;
+    return true;
+}
+
+bool unitemp_HTU21x_free(Sensor* sensor) {
+    //Нечего высвобождать, так как ничего не было выделено
+    UNUSED(sensor);
+    return true;
+}
+
+bool unitemp_HTU21x_init(Sensor* sensor) {
+    I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
+
+    UNUSED(i2c_sensor);
+    return true;
+}
+
+bool unitemp_HTU21x_deinit(Sensor* sensor) {
+    I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
+    UNUSED(i2c_sensor);
+    return true;
+}
+
+UnitempStatus unitemp_HTU21x_update(Sensor* sensor) {
+    I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
+
+    //Датчик может быть всего один, так что норм
+    static bool temp_hum = false;
+
+    uint8_t data[3];
+
+    if(sensor->status == UT_SENSORSTATUS_POLLING) {
+        if(!unitemp_i2c_readArray(i2c_sensor, 3, data)) return UT_SENSORSTATUS_TIMEOUT;
+
+        uint16_t raw = ((uint16_t)data[0] << 8) | data[1];
+        if(checkCRC(raw) != data[2]) return UT_SENSORSTATUS_BADCRC;
+
+        if(temp_hum) {
+            sensor->temp = (0.002681f * raw - 46.85f);
+        } else {
+            sensor->hum = ((0.001907 * (raw ^ 0x02)) - 6);
+        }
+        temp_hum = !temp_hum;
+        return UT_SENSORSTATUS_OK;
+    }
+
+    if(temp_hum) {
+        //Запрос температуры
+        data[0] = 0xF3;
+        if(!unitemp_i2c_writeArray(i2c_sensor, 1, data)) return UT_SENSORSTATUS_TIMEOUT;
+    } else {
+        //Запрос влажности
+        data[0] = 0xF5;
+        if(!unitemp_i2c_writeArray(i2c_sensor, 1, data)) return UT_SENSORSTATUS_TIMEOUT;
+    }
+
+    return UT_SENSORSTATUS_POLLING;
+}

sensors/HTU21x.h

@@ -0,0 +1,62 @@
+/*
+    Unitemp - Universal temperature reader
+    Copyright (C) 2023  Victor Nikitchuk (https://github.com/quen0n)
+
+    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 <https://www.gnu.org/licenses/>.
+*/
+#ifndef UNITEMP_HTU21x
+#define UNITEMP_HTU21x
+
+#include "../unitemp.h"
+#include "../Sensors.h"
+extern const SensorType HTU21x;
+/**
+ * @brief Выделение памяти и установка начальных значений датчика HTU21x
+ *
+ * @param sensor Указатель на создаваемый датчик
+ * @return Истина при успехе
+ */
+bool unitemp_HTU21x_alloc(Sensor* sensor, char* args);
+
+/**
+ * @brief Инициализации датчика HTU21x
+ *
+ * @param sensor Указатель на датчик
+ * @return Истина если инициализация упспешная
+ */
+bool unitemp_HTU21x_init(Sensor* sensor);
+
+/**
+ * @brief Деинициализация датчика
+ *
+ * @param sensor Указатель на датчик
+ */
+bool unitemp_HTU21x_deinit(Sensor* sensor);
+
+/**
+ * @brief Обновление значений из датчика
+ *
+ * @param sensor Указатель на датчик
+ * @return Статус обновления
+ */
+UnitempStatus unitemp_HTU21x_update(Sensor* sensor);
+
+/**
+ * @brief Высвободить память датчика
+ *
+ * @param sensor Указатель на датчик
+ */
+bool unitemp_HTU21x_free(Sensor* sensor);
+
+#endif

unitemp.h

@@ -40,7 +40,7 @@
 //Имя приложения
 #define APP_NAME "Unitemp"
 //Версия приложения
-#define UNITEMP_APP_VER "1.0.1-dev"
+#define UNITEMP_APP_VER "1.0.2-dev"
 //Путь хранения файлов плагина
 #define APP_PATH_FOLDER "/ext/unitemp"
 //Имя файла с настройками