Sundance SMT6025 v.2.9 - Manual (Page 16)

Version 2.9 Page 16 of 45 SMT6025 User Manual
11 Functional description
Once an interface to the hardware has been obtained by calling
SmtOpenBoard(), the interface allows you to access the following features
available on various Sundance carrier boards.
Functionality SMT320-327 SMT300-310-310Q
Comport access Supported Supported
Downloading files Supported Supported
Mailboxes Not supported Supported
High speed channel Not supported Supported
Board state Supported Supported
Read and write carrier board registers Supported Supported
PCI bridge chip register access Supported Supported
DSP Interrupt Supported Supported
Table 2 - Supported functionality for Sundance carrier boards
12 Host comport
The simplest and most general I/O mechanism that can be used to communicate
between the host and the Root DSP is the host comport.
It is a sequential, bi-directional link that gives typical transfer speeds of up to
2MB/s. It is also used for loading programs into the DSP. Refer to the user
manual of your TIM for information about the supported file formats.
The functions used to transfer data over this link are blocking. This means that
they do not return until the transfer has completed. To force pending read or
write operation to complete by throwing an exception of the type SMTExc, use
CpCancel().
12.1 CpRead
Read data from the comport.
Prototype:
void IFHw::CpRead( void *pBuf, UINT nBytes )
Parameters:
pBuf Pointer to a buffer to receive the data read from the
comport.
User Manual (QCF42); Version 2.9, 22/02/02; © Sundance Multiprocessor Technology Ltd. 2002