Team Eta / Mbed OS Smart_Baby_Monitor

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Dependencies:   Hexi_KW40Z

HTU21D.h@0:69293b19ee19, 2018-02-28 (annotated)

Committer:
Team_Eta_MBED
Date:
Wed Feb 28 16:34:40 2018 +0000
Revision:
0:69293b19ee19
Smart Baby Monitor Foundations

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Team_Eta_MBED 0:69293b19ee19 1 /**
Team_Eta_MBED 0:69293b19ee19 2 * EE 4391 Senior Design
Team_Eta_MBED 0:69293b19ee19 3 * Professor Hinkle and Dr. Compeau
Team_Eta_MBED 0:69293b19ee19 4 * @author Team Eta
Team_Eta_MBED 0:69293b19ee19 5 * Texas State University
Team_Eta_MBED 0:69293b19ee19 6 *
Team_Eta_MBED 0:69293b19ee19 7 * @section DESCRIPTION
Team_Eta_MBED 0:69293b19ee19 8 *
Team_Eta_MBED 0:69293b19ee19 9 * Honeywell HTU21D Humidity and Temperature sensor.
Team_Eta_MBED 0:69293b19ee19 10 * Datasheet, specs, and information:
Team_Eta_MBED 0:69293b19ee19 11 * https://cdn.sparkfun.com/assets/6/a/8/e/f/525778d4757b7f50398b4567.pdf
Team_Eta_MBED 0:69293b19ee19 12 */
Team_Eta_MBED 0:69293b19ee19 13
Team_Eta_MBED 0:69293b19ee19 14 #ifndef HTU21D_H
Team_Eta_MBED 0:69293b19ee19 15 #define HTU21D_H
Team_Eta_MBED 0:69293b19ee19 16
Team_Eta_MBED 0:69293b19ee19 17 /**
Team_Eta_MBED 0:69293b19ee19 18 * Includes
Team_Eta_MBED 0:69293b19ee19 19 */
Team_Eta_MBED 0:69293b19ee19 20 #include "mbed.h"
Team_Eta_MBED 0:69293b19ee19 21
Team_Eta_MBED 0:69293b19ee19 22 /**
Team_Eta_MBED 0:69293b19ee19 23 * Defines
Team_Eta_MBED 0:69293b19ee19 24 */
Team_Eta_MBED 0:69293b19ee19 25 // Acquired from Datasheet.
Team_Eta_MBED 0:69293b19ee19 26
Team_Eta_MBED 0:69293b19ee19 27 #define HTU21D_I2C_ADDRESS 0x40
Team_Eta_MBED 0:69293b19ee19 28 #define TRIGGER_TEMP_MEASURE 0xE3
Team_Eta_MBED 0:69293b19ee19 29 #define TRIGGER_HUMD_MEASURE 0xE5
Team_Eta_MBED 0:69293b19ee19 30
Team_Eta_MBED 0:69293b19ee19 31
Team_Eta_MBED 0:69293b19ee19 32 //Commands.
Team_Eta_MBED 0:69293b19ee19 33 #define HTU21D_EEPROM_WRITE 0x80
Team_Eta_MBED 0:69293b19ee19 34 #define HTU21D_EEPROM_READ 0x81
Team_Eta_MBED 0:69293b19ee19 35
Team_Eta_MBED 0:69293b19ee19 36
Team_Eta_MBED 0:69293b19ee19 37 /**
Team_Eta_MBED 0:69293b19ee19 38 * Honeywell HTU21D digital humidity and temperature sensor.
Team_Eta_MBED 0:69293b19ee19 39 */
Team_Eta_MBED 0:69293b19ee19 40 class HTU21D {
Team_Eta_MBED 0:69293b19ee19 41
Team_Eta_MBED 0:69293b19ee19 42 public:
Team_Eta_MBED 0:69293b19ee19 43
Team_Eta_MBED 0:69293b19ee19 44 /**
Team_Eta_MBED 0:69293b19ee19 45 * Constructor.
Team_Eta_MBED 0:69293b19ee19 46 *
Team_Eta_MBED 0:69293b19ee19 47 * @param sda mbed pin to use for SDA line of I2C interface.
Team_Eta_MBED 0:69293b19ee19 48 * @param scl mbed pin to use for SCL line of I2C interface.
Team_Eta_MBED 0:69293b19ee19 49 */
Team_Eta_MBED 0:69293b19ee19 50 HTU21D(PinName sda, PinName scl);
Team_Eta_MBED 0:69293b19ee19 51
Team_Eta_MBED 0:69293b19ee19 52
Team_Eta_MBED 0:69293b19ee19 53 //Samples the temperature, input void, outputs an int in celcius.
Team_Eta_MBED 0:69293b19ee19 54 int sample_ctemp(void);
Team_Eta_MBED 0:69293b19ee19 55
Team_Eta_MBED 0:69293b19ee19 56 //Samples the temperature, input void, outputs an int in fahrenheit.
Team_Eta_MBED 0:69293b19ee19 57 int sample_ftemp(void);
Team_Eta_MBED 0:69293b19ee19 58
Team_Eta_MBED 0:69293b19ee19 59 //Samples the temperature, input void, outputs an int in kelvin.
Team_Eta_MBED 0:69293b19ee19 60 int sample_ktemp(void);
Team_Eta_MBED 0:69293b19ee19 61
Team_Eta_MBED 0:69293b19ee19 62 //Samples the humidity, input void, outputs and int.
Team_Eta_MBED 0:69293b19ee19 63 int sample_humid(void);
Team_Eta_MBED 0:69293b19ee19 64
Team_Eta_MBED 0:69293b19ee19 65
Team_Eta_MBED 0:69293b19ee19 66
Team_Eta_MBED 0:69293b19ee19 67 private:
Team_Eta_MBED 0:69293b19ee19 68
Team_Eta_MBED 0:69293b19ee19 69 I2C* i2c_;
Team_Eta_MBED 0:69293b19ee19 70
Team_Eta_MBED 0:69293b19ee19 71 /**
Team_Eta_MBED 0:69293b19ee19 72 * Write to EEPROM or RAM on the device.
Team_Eta_MBED 0:69293b19ee19 73 *
Team_Eta_MBED 0:69293b19ee19 74 * @param EepromOrRam 0x80 -> Writing to EEPROM
Team_Eta_MBED 0:69293b19ee19 75 * @param address Address to write to.
Team_Eta_MBED 0:69293b19ee19 76 * @param data Data to write.
Team_Eta_MBED 0:69293b19ee19 77 */
Team_Eta_MBED 0:69293b19ee19 78 void write(int EepromOrRam, int address, int data);
Team_Eta_MBED 0:69293b19ee19 79
Team_Eta_MBED 0:69293b19ee19 80 /**
Team_Eta_MBED 0:69293b19ee19 81 * Read EEPROM or RAM on the device.
Team_Eta_MBED 0:69293b19ee19 82 *
Team_Eta_MBED 0:69293b19ee19 83 * @param EepromOrRam 0x81 -> Reading from EEPROM
Team_Eta_MBED 0:69293b19ee19 84 * @param address Address to read from.
Team_Eta_MBED 0:69293b19ee19 85 * @return The contents of the memory address.
Team_Eta_MBED 0:69293b19ee19 86 */
Team_Eta_MBED 0:69293b19ee19 87 int read(int EepromOrRam, int address);
Team_Eta_MBED 0:69293b19ee19 88
Team_Eta_MBED 0:69293b19ee19 89 };
Team_Eta_MBED 0:69293b19ee19 90
Team_Eta_MBED 0:69293b19ee19 91 #endif /* HTU21D_H */