CCS/TMS320F28027: SCI interrupt within Timer interrupt

Indrajit Lawande95

Part Number: TMS320F28027
Other Parts Discussed in Thread: C2000WARE

Tool/software: Code Composer Studio

Hi I am using f28027F launchpad for SCI(UART ) communication . I want that SCI communication to be happen every 1 sec . so i have decided to use timer 0 to create interrupt every 1 sec.

But when it enters into timer ISR , i have to add SCI interrupt for sci communication , will it works. That is within timer interrupt i have to use sci interrupt . My question is if i programme like that will that configuration runs every 1 sec and send some data from SCI port to external device.

If not suggest me some links , projects or any method so that i can do scheduling of task.

Thanks .

over 8 years ago

0 Ozino Odharo over 8 years ago

TI__Mastermind 21305 points

Hi Indrajit,

There are some sci and interrupt examples provided in C2000Ware under device_support/f2802x/examples that may be able to give you a starting point. Additionally, you might want to look in the RTOS forum for more information regarding scheudling of tasks. https://e2e.ti.com/support/embedded/tirtos/

Hope this helps.

Regards,

Ozino

0 Indrajit Lawande95 over 8 years ago in reply to Ozino Odharo

Expert 1350 points

Thanks for your suggestion .
I will go through that .
Also i have used SCI interrupt and it is working perfectly . Now i have to add the same code within timer interrupt ISR so that timer generate interrupt and then within timer interrupt ISR i will perform SCI communication instead of polling method i have to use interrupt method to communicate with external device to send some data and receive some data. Actually my question was if i do like this, SCI interrupt cause any problem to Timer interrupt ? I don't know how to handle nested interrupt .
Thank You.

0 Ozino Odharo over 8 years ago in reply to Indrajit Lawande95

TI__Mastermind 21305 points

Hi Indrajit,

For more information with regards to handling nested interrupts, please refer to the wiki page:

Regards,

Ozino

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CCS/TMS320F28027: SCI interrupt within Timer interrupt