TSM320F2808 SCI Controller Programming

Joe Chen67

Other Parts Discussed in Thread: TMS320F2808

Can someone recommend a best practice programming for this SCI controller?

I am maintaining an existing C code for TMS320F2808 serial data transmit part. The code for the controller portion looks like this:

put a string of texts to the queue for SCI controller

put all bytes from the queue into the SCI TX FIFO

Set SCIFFTX's TXFFIEN = 1

DELAY(500ms) // To way for SCI controller completing TX.

What I don't like is the "DELAY(500ms)".

Is there a way to get a interrupt when SCI controller completes a transmit? Or a poll would be better this DELAY(500ms).

--Joe

over 11 years ago

0 Brett Larimore over 11 years ago

TI__Guru 57255 points

Hi Joe,

This is really a software architecture question and therefore it depends on what else is going on in your code.

However, the SCI peripheral does have the features built-in to give you something to poll or generate interrupts if you desire. I would recommend looking through the SCI reference guide for your device (can be found in the "Technical Documents"->"User's Guides" section of your specific device's product page) for more information:
http://www.ti.com/product/TMS320F2808/technicaldocuments#doctype6

Please note that if you decide to use interrupts and already have other interrupts running in your system, you should note that interrupts are not nested by default. See link: http://processors.wiki.ti.com/index.php/Interrupt_Nesting_on_C28x

Thank you,
Brett

0 Joe Chen67 over 11 years ago in reply to Brett Larimore

Intellectual 295 points

Thanks Brett! I'll try to following your links.

--Joe

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TSM320F2808 SCI Controller Programming