/* * Author: Norbert Wesp * Copyright (c) 2017 Phytec Messtechnik GmbH. * * based on: RIOT-driver hdc1000 by Johann Fischer * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #pragma once #include #include #include #define HDC1000_NAME "hdc1000" #define HDC1000_i2C_ADDRESS 0x43 #define HDC1000_MANUFACTURER_ID 0x5449 /* ID of Texas Instruments */ #define HDC1000_DEVICE_ID 0x1000 /* ID of HDC1000 device */ /* HDC1000 Register Map */ #define HDC1000_TEMPERATURE 0x00 #define HDC1000_HUMIDITY 0x01 #define HDC1000_CONFIGURATION 0x02 #define HDC1000_MANUFACTURER_ID_REG 0xFE #define HDC1000_DEVICE_ID_REG 0xFF /* HDC1000 configuration register bitmap */ #define HDC1000_RST_SOFT 0x8000 #define HDC1000_HEAT (1 << 13) #define HDC1000_SEQ_MODE (1 << 12) #define HDC1000_BTST_LOW (1 << 11) #define HDC1000_TRES_14 (0) #define HDC1000_TRES_11 (1 << 10) #define HDC1000_HRES_14 (0) #define HDC1000_HRES_11 (1 << 8) #define HDC1000_HRES_8 (1 << 9) #define SLEEP_SEC (1000*1000) namespace upm { /** * @brief HDC1000 Temperature and Humidity Sensor * @defgroup hdc1000 libupm-hdc1000 * @ingroup ti i2c temp */ /** * @library hdc1000 * @sensor hdc1000 * @comname HDC1000 Temperature & Humidity Sensor * @type temp * @man ti * @web http://www.ti.com/lit/ds/symlink/hdc1000.pdf * @con i2c * * @brief API for the HDC1000 Temperature & Humidity Sensor * * Description in web-link above: * The HDC1000 is a digital humidity sensor with integrated temperature sensor * that provides excellent measurement accuracy at very low power. The device * measures humidity based on a novel capacitive sensor. The humidity and * temperature sensors are factory calibrated. The innovative * WLCSP (Wafer Level Chip Scale Package) simplifies board design with the use * of an ultra-compact package. The sensing element of the HDC1000 is placed on * the bottom part of the device, which makes the HDC1000 more robust against * dirt, dust, and other environmental contaminants. The HDC1000 is functional * within the full -40 to +125 [degC] temperature range. * * @snippet hdc1000.cxx Interesting */ class HDC1000 { public: /** * Instantiates an HDC1000 object * * @param bus Number of the used bus * @param devAddr Address of the used I2C device */ HDC1000 (int bus, int devAddr=HDC1000_i2C_ADDRESS); /** * Check device_id of sensor * * @return 0 on succes * -1 on error */ int checkID(void); /** * Performs a soft reset of the HDC1000 device to ensure * it is in a known state. */ void resetSensor(void); /** * Initiates a temperature/pressure mesasurement and waits * to complete. */ void sampleData(void); /** * Get the current measured humidity [RH] * * @param bSampleData Flag to read sensor * @return The humidity sensor temp in degC */ float getHumidity(int bSampleData = false); /** * Get the humidity cell temperature [degC] * * @param bSampleData Flag to read sensor * @return The humidity sensor temp in degC */ float getTemperature(int bSampleData = false); private: std::string m_name; int m_controlAddr; int m_bus; mraa::I2c m_i2ControlCtx; int32_t m_temperature; int32_t m_humidity; }; }