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https://github.com/1991Patrick/I2C_SHT2x.git
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60 lines
3.2 KiB
Plaintext
60 lines
3.2 KiB
Plaintext
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/*!
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* \file main.c
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* \author Patrick Taling
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* \date 31/03/2017
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* \version 1.0
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*
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* \brief
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* Simple I2C SHT2x library to measure relative humidity and temperature and write it to an I2C LCD with the ATxmega256a3u.
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* Rights are owned by the original authors (Atmel, w.e.dolman, Noel200 (Elektroda) and Sensirion)
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* The user is responsible for any damage on any devices
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*
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* \Hardware
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* # 1602 I2c HD44780 LCD from HobbyElectronica https://www.hobbyelectronica.nl/product/1602-lcd-i2c-blauw-backlight/
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* # HvA Xmega-bord (ATxmega256a3u with programmer/ USB-RS232-interface ATxmega32a4u)
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* # 3.3V - 5V levelshifter with two BS170 N-channel MOSFET
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* # Humidity/ temperature sensor module (EBM016) https://www.elektor.nl/humidity-sensor-module-ebm016
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*
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* \development
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* # Atmel Studio 7 (version: 7.0.118)
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* # OS Version: Microsoft Windows NT 6.2.9200.0 (Platform: Win32NT)
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* # Atmel Gallary (7.8)
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*
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* \details
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* #The file main.c is the main to write text to a I2C lcd (PCF8574T adress 0x27) with the ATxmega256a3u.
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* #For the use of the main code you need the i2c library from w.e.dolman (<a href="mailto:w.e.dolman@hva.nl">w.e.dolman@hva.nl</a>)
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* #For i2c.c use code 21.8 from "de taal C en de Xmega tweede druk" http://dolman-wim.nl/xmega/book/index.php
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* #For i2c.h use code 21.9 from "de taal C en de Xmega tweede druk" http://dolman-wim.nl/xmega/book/index.php
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*
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* #The main code needs some parts of the i2c_lcd library from Noel200 from http://www.elektroda.pl/rtvforum/topic2756081.html.
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* #The library can be downloaded from: http://www.elektroda.pl/rtvforum/login.php?redirect=download.php&id=670533.
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* #Go to LCD_PCF8574T/lcd_pcf/ and use i2c_lcd.c and i2c_lcd.h from the pakkage
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*
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* #The libraby needs some parts of the the SHT2x library from SENIRION from https://www.sensirion.com/en/products/humidity-sensors/humidity-temperature-sensor-sht2x-digital-i2c-accurate/
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* #The libraby can be download from: https://www.sensirion.com/en/products/all-documents-of-sensirions-humidity-sensors-for-download/
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* # Go to SHT2x/ Sample Code SHT21 and download the zip file Sensirion_Humidity_Sensors_SHT21_Sample_Code_C-file
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* \note the following files aren't fully used. Most parts are used in other .c of .h files or disabled.
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* DisplayDip204.C, DisplayDip204.h,
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* I2C_HAL.c, I2C_HAL.h,
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* System.c, System.h and
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* io70f3740.h.
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* \note for the use of two SHT2X you should use different IOs for SDA or additional hardware such as I2C multiplexer.
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* The adress of the SHT2x can’t be changed.
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*
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*
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* # All libraries are included in the folder i2c_SHT2x.
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* # For i2c.c and i2c.h use folder i2c_Dolman
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* # For i2c_lcd.c and i2c_lcd.h use folder i2c_lcd_Elektroda.
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* # For I2C_SHT2x.c, I2C_SHT2x.h and Typedefs.h use folder i2c_SHT2x_Sensirion.
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*
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* \verbatim
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* #include <i2c_lcd.h>
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* #include <I2C_SHT2x.h>
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* #include <Typedefs.h>
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\endverbatim
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* \par
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*
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* \note An AVR-project can use multiple I2C's. One shoud take care that
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* in different source files there are no multiple i2c_init
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* definitions for the same I2C.
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*/
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