File I/O Support; Extending I/O Support To New Devices - Analog Devices VISUALDSP++ 3.5 Manual

C/C++ Run-Time Model and Environment
Table 1-17. Miscellaneous Registers (Cont'd)
LPSTACKP
MSTAT
STACKA
STACKP
STACKA

File I/O Support

The VisualDSP++ environment provides access to files on a host system,
using functions. File I/O support is provided through a set of
stdio
low-level primitives that implement the
operations.The
seek
vide conventional C input and output facilities. The source files for the
I/O primitives are available under the VisualDSP++ installation in the
sub-directory
219x\lib\src\libio_src
Refer to "stdio.h" on page 3-13

Extending I/O Support To New Devices

The I/O primitives are implemented using an extensible device driver
mechanism. The default start-up code includes a device driver that can
perform I/O through the VisualDSP++ simulator and EZ-KIT Lite. Other
device drivers may be registered and then used through the normal
functions.
A device driver is a set of primitive functions, grouped together into a
structure. This structure is defined in
DevEntry
struct DevEntry {
int DeviceID;
void *data;
1-166
scratch
scratch
scratch
scratch
scratch
functions make use of these primitives to pro-
stdio
for more information.
VisualDSP++ 3.5 C/C++ Compiler and Library Manual
, ,
open close read
.
:
device.h
for ADSP-219x DSPs
, , and
write
stdio