The following files contain the source code for the low-level
stream I/O routines. When you use µVision IDE, you can simply add the
modified versions to the project.
C Source File
Description
PUTCHAR.C
Used by all stream routines that output
characters. You may adapt this routine to your individual
hardware (for example, LCD or LED displays).
The default version outputs characters via the serial interface.
An XON/XOFF protocol is used for flow control. Line feed
characters ('\n') are converted into carriage return/line
feed sequences ('\r\n').
GETKEY.C
Used by all stream routines that input characters.
You may adapt this routine to your individual hardware (for
example, matrix keyboards). The default version reads a character
via the serial interface. No data conversions are performed.
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