ReadDigitalTemp

Syntax:

    ReadDigitalTemp

Command Availability:

Available on all microcontrollers.

Explanation:

Return the value of the sensor in two global variables. The following two lines must be included in the GCBASIC source file.

    #include <DS18B20.h>
    #define DQ PortC.3 ; change port configuration as required

This method returns whole part of the sensor value in the byte variable DSint, the method also returns decimal part of the sensor value in the byte variable DSdec.

Example:

    'Chip Settings. Assumes the development board with with a 16F877A
    #chip 16F877A,1

    *#include <DS18B20.h>*

    'Use LCD in 4 pin mode and define LCD pins
    #define LCD_IO 4
    #define LCD_WIDTH 20                ;specified lcd width for clarity only.  20 is the default width
    #define LCD_RW PORTE.1
    #define LCD_RS PORTE.0
    #define LCD_Enable PORTE.2
    #define LCD_DB4 PORTD.4
    #define LCD_DB5 PORTD.5
    #define LCD_DB6 PORTD.6
    #define LCD_DB7 PORTD.7

    ' DS18B20 port settings
    #define DQ PortC.3

    do forever

        ReadDigitalTemp

        ' Display the integer value of the sensor on the LCD
        cls
        print "Temp"
        locate 0,8
        print DSInt
        print "."
        print DSdec
        print chr(223)+"C"
        wait 2 s

    loop
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