CCS C Compiler Manual PCB / PCM / PCH

PreProcessor
type=speed option the compiler will set the correct configuration bits for the USB
peripheral to operate at Full-Speed.
USB_LOW for devices with a built-in USB peripheral. When used with the type=speed
option the compiler will set the correct configuration bits for the USB peripheral to operate
at Low-Speed.
Also See:
delay_ms(), delay_us()
#use dynamic_memory
Syntax:
Elements:
Purpose:
Examples:
Example
Files:
Also See:
#USE DYNAMIC_MEMORY
None
This pre-processor directive instructs the compiler to create the
_DYNAMIC_HEAD object. _DYNAMIC_HEAD is the location where the first free
space is allocated.
#USE DYNAMIC_MEMORY
void main ( ){
}
ex_malloc.c
None
#use fast_io
Syntax:
Elements:
Purpose:
#USE FAST_IO (port)
port is A, B, C, D, E, F, G, H, J or ALL
Affects how the compiler will generate code for input and output instructions that
follow. This directive takes effect until another #use xxxx_IO directive is
encountered. The fast method of doing I/O will cause the compiler to perform I/O without
programming of the direction register. The compiler's default operation is the opposite of
this command, the direction I/O will be set/cleared on each I/O operation. The user must
ensure the direction register is set correctly via set_tris_X(). When linking multiple
compilation units be aware this directive only applies to the current compilation unit.
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