trouble with dm642 ddk uart

This question has suggested answer(s)

Posted by Xavier15128

on Oct 14 2009 23:17 PM

Expert1750 points

Hi,all:

This is my first time to use DDK to develop the uart aaplication,

as i am not so familiar with mini-driver and class driver,

so can anyone give me some suggestions.

Thank you!

---------------------

another problem is that i see the ddk (uart.pdf ,spru616.pdf),i find the introduction of the "uarttest" example

"This example demonstrates synchronous (blocking) use of the mini-drivers for the UART. It uses TSK threads and the GIO class
driver API. When you examine the configuration file, notice the TSK and UDEV objects. The GIO objects are created dynamically at runtime.
Located in TI_DIR\ddk\apps\uart."

in spru616, it notes that

The GIO module has the following features:
❏ Provides blocking (synchronous) read/write APIs.

the problem comes ,what dose "synchronous (blocking)"mean?

Can i use the same way as uarttest used to implement my uart(tl16C754),or is there any other ways ?

thank you![*-)]

All Replies

Posted by TimHarron

on Oct 15 2009 15:16 PM

Suggested Answer

Genius16780 points

Xavier
the problem comes ,what dose "synchronous (blocking)"mean?

"Blocking" is a term used to denote suspending a thread until some condition is met. For example, in a video processing task after it completes a frame you might want to suspend it from executing until another frame is ready. This is considered "blocking" and it can be synchronized based on receiving a new frame.

Xavier
Can i use the same way as uarttest used to implement my uart(tl16C754),or is there any other ways ?

There are several ways to implement your own UART, but if you want to leverage the uarttest software that already exists this might be the easiest.

-Tim

---------------------------------------------------------------------------------------------------------
Please click the Verify Answer button on this post if it answers your question.
---------------------------------------------------------------------------------------------------------