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1. Serial Communications Basics
1.5 Serial Communications Syntax
Characters
In this manual, all characters are expressed using the C-Language syntax:
decimal values ddd
2
hexadecimal values \xhh
3
Negative Values/Numbers
The 2s complement number system is used to express negative numbers
Pascal-language string
A Pascal-language string consists of one or more characters. The first character of the string contains the length of the string.
Therefore, a Pascal-language string is limited to 255 characters.
Pascal string ’Hello world”
length
\x0b
’h’
\x68
’e’
\x65
’l’
\x6c
’l’
\x6c
’o’
\x6f
”
\x20
’w’
\x77
’o’
\x6f
’r’
\x72
’l’
\x6c
’d’
\x64
C-language string
A C-language string consists of one or more characters. The last character of the string is always the NULL character \x00.There-
fore, the length of a C-language string is determined by the position of the NULL character...
C string ’Hello world”
’h’
\x68
’e’
\x65
’l’
\x6c
’l’
\x6c
’o’
\x6f
”
\x20
’w’
\x77
’o’
\x6f
’r’
\x72
’l’
\x6c
2. ddd=0...255
3. hh=00...ff
10 R5976614 GALAXY WARP™ 31032004