IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation Index
Introduction
Programming notes - SC12 @CHIP-RTOS V1.10
Here are some useful notes for programming applications for the IPC@CHIP.
These notes contains general rules for programming DOS applications for the IPC@CHIP and important
information about internals of the @CHIP-RTOS which can prevent the programmers from making fatal
errors.
❍ Common notes for building IPC@CHIP user applications
❍ Using RTOS API
❍ Programming CGI functions
❍ Configure the FTP server
❍ Usage of the TCP/IP API
❍ General notes for the usage of the DOS and @CHIP-RTOS int API calls
❍ Using Hardware API
❍ Using Fossil API
❍ Working with Float Data Types
❍ Configure PPP client or server
Common notes for building IPC@CHIP user applications
1. Limited Flash Write Cycles (of IPC@CHIPs internal Flash):
To open files on the flash disk drive A: for reading or writing, you can use the standard C
functions fopen or open. We recommend the use of the fopen/fread/fwrite calls instead of
open/read/write to reduce the flash write cycles, because these cycles are limited.
For further information see the FlashWriteCycles document.
2. Compiler option settings:
We recommend the usage of large memory model for user applications.
The compiler must produce 186 processor instruction code.
The data alignment must be set to 8 Bit (Byte alignment), not to 16-Bit (Word alignment)!
3. No "exception handling" at Borland C 4.x or 5.x projects:
Users of Borland C-Compilers (which provides "exception handling libraries" as it's default setting
for 4.5 or 5.02) should choose for their program project "No exceptions" at the "Target Expert"
window. This setting saves Flash and RAM memory space.
4. Do not select "Test stack overflow" at Borland C 4.x or 5.x project compiler settings:
If "Test stack overflow" is selected a stack check is done at every function call. If stack overflow
is recognized the program halts.
This mechanism is not usable in user applications which are using several tasks inside their
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