Data Sheet

dScript

dScript User Manual v2.15

Expressions

Expressions are a sequence of variables and operators. They are used to assign values to

either numeric or string variables.

Numeric expressions

X = A + B

This will add the variables A and B together and assign the result to variable X. An expression

may have any number of operations.

X = A + B * C

Expressions are always evaluated from left to right. No precedence is given to multiply and

divide as some compilers do. If A=2, B=3 and C=4 then the expression above will yield 20.

2 + 3 = 5

5 * 4 = 20

Parenthesis may be used to change the order the expression is evaluated.

X = A + (B * C)

will give the result 14

This following expression will use the raw value from the ADC (Analogue to Digital Converter)

and scale this to read temperature in degrees C.

Temperature = ((ADC2*3223)-500000)/10000

Although the parenthesis is not actually required here as we want to evaluate from left to

right, it is included for clarity. The following works just as well:

Temperature = ADC2*3223-500000/10000

X = X + 1

X += 1

The above expressions are functionally identical