mirror of
https://github.com/DarkFlippers/unleashed-firmware
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90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/*
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Unitemp - Universal temperature reader
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Copyright (C) 2022 Victor Nikitchuk (https://github.com/quen0n)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "SHT30.h"
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#include "../interfaces/I2CSensor.h"
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const SensorType SHT30 = {
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.typename = "SHT30",
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.altname = "SHT30/31/35",
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.interface = &I2C,
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.datatype = UT_TEMPERATURE | UT_HUMIDITY,
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.pollingInterval = 1000,
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.allocator = unitemp_SHT30_I2C_alloc,
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.mem_releaser = unitemp_SHT30_I2C_free,
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.initializer = unitemp_SHT30_init,
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.deinitializer = unitemp_SHT30_I2C_deinit,
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.updater = unitemp_SHT30_I2C_update};
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const SensorType GXHT30 = {
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.typename = "GXHT30",
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.altname = "GXHT30/31/35",
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.interface = &I2C,
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.datatype = UT_TEMPERATURE | UT_HUMIDITY,
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.pollingInterval = 1000,
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.allocator = unitemp_SHT30_I2C_alloc,
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.mem_releaser = unitemp_SHT30_I2C_free,
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.initializer = unitemp_GXHT30_init,
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.deinitializer = unitemp_SHT30_I2C_deinit,
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.updater = unitemp_SHT30_I2C_update};
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bool unitemp_SHT30_I2C_alloc(Sensor* sensor, char* args) {
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UNUSED(args);
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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//Адреса на шине I2C (7 бит)
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i2c_sensor->minI2CAdr = 0x44 << 1;
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i2c_sensor->maxI2CAdr = 0x45 << 1;
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return true;
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}
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bool unitemp_SHT30_I2C_free(Sensor* sensor) {
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//Нечего высвобождать, так как ничего не было выделено
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UNUSED(sensor);
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return true;
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}
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bool unitemp_SHT30_init(Sensor* sensor) {
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UNUSED(sensor);
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return true;
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}
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bool unitemp_GXHT30_init(Sensor* sensor) {
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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//Включение режима автоматического преобразования 2 раза в сек
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uint8_t data[2] = {0x22, 0x36};
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if(!unitemp_i2c_writeArray(i2c_sensor, 2, data)) return false;
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return true;
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}
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bool unitemp_SHT30_I2C_deinit(Sensor* sensor) {
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//Нечего деинициализировать
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UNUSED(sensor);
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return true;
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}
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UnitempStatus unitemp_SHT30_I2C_update(Sensor* sensor) {
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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//Получение данных
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uint8_t data[6] = {0xE0, 0x00};
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if(!unitemp_i2c_writeArray(i2c_sensor, 2, data)) return UT_SENSORSTATUS_TIMEOUT;
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if(!unitemp_i2c_readArray(i2c_sensor, 6, data)) return UT_SENSORSTATUS_TIMEOUT;
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sensor->temp = -45 + 175 * (((uint16_t)(data[0] << 8) | data[1]) / 65535.0f);
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sensor->hum = 100 * (((uint16_t)(data[3] << 8) | data[4]) / 65535.0f);
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return UT_SENSORSTATUS_OK;
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}
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