Source Files; File Format And File Name - Epson S5U1C17001C Manual

2 Source Files

This chapter explains the rules and grammar involved with the creation of source files.

2.1 File Format and File Name

Use the GNU17 IDE editor or a general-purpose editor to create source files.
 File format

Save data in a standard text file.
 File name

C source file <filename>.c
Assembly source file <filename>.s
Specify the <filename> with not more than 32 alphanumeric characters shown as follows:
a–z, A–Z, 0–9 and _
This rule applies to file names for all the S1C17 tools.
 Directory name

Only alphanumeric characters can be used for directory names just as for file names. Do not use spaces or other symbols. Up to
64 characters can be used for a path name including directory and file names.
 Global variables/static variables

Up to 200 characters can be used to name global and static variables.
A total of 32,000 global and static variables can be accepted.
 File size

The following shows the guide about the upper limit of the C source file size:
 In the case of a source file that contains only variables, constants and arrays, up to 100,000 lines can be accepted.
 In the case of a source file that contains only executable codes (not including arrays and variables), up to 20,000 lines can be
accepted. However, the number of acceptable lines varies depending on the source density.
 Consider these two conditions above as reference for sources in which variables, constants, arrays and executable codes are
mixed.
 The number of lines shown above varies depending on compile environment conditions. Moreover, the compiler may be
forcibly terminated due to insufficient resources. In this case, build the program under a resource-rich environment or divide
the source file into multiple files before compiling. (Resources described here depend on the OS used rather than the RAM
capacity of the PC.)
 Up to 512 characters can be used per line in C source files.
 In the case of assembly source files, up to 30,000 lines can be accepted.
 Tab setting

The recommended tab stop is every 4 characters. This is the default tab setting when the IDE displays sources.
 EOF

Make sure that each statement starts on a new line and that EOF is entered after line feed (so that EOF will stand independent at
the file end).
S5U1C17001C Manual
(Rev. 1.0)
Seiko Epson Corporation
2 Source Files
2-1