f28335 custom board: sci communication issue

ashok kumar6

Other Parts Discussed in Thread: TMS320F28335, CONTROLSUITE

Hi all,

Board: TMS320F28335 custom board

Software: Example_2833xSci_Echoback.c modified as per the board configuration, The sci interfaced with SCIB, modified the code to support only transimition. Please find the sci_tx.patch file in attached zip folder with this post.

Tool and base software: CCSV6.2, controlSUITE\device_support\f2833x\v141\DSP2833x_common\source\DSP2833x_Sci.c, Example_2833xSci_Echoback\Example_2833xSci_Echoback.c

Kindly let me know anybody has any clue on this issue, please let me know.

4578.sci_tx.zip

Issue: The characters are not displayed properly on the console.

Thanks in advance.

over 8 years ago

0 ashok kumar6 over 8 years ago

Expert 1790 points

Hi all,

I found the issue , it is related to with Baud rate register(SCIBAUD ) settings.

Now able to Transmit the Characters from Board to PC,

Now issue is with Reception, from PC to Board.

Other than Bard rate settings, do we need to look any other things. Please let us know.

Thanks

0 Cody Watkins over 8 years ago in reply to ashok kumar6

TI__Mastermind 42195 points

Ashok,

Baud rate, Stop bits, and Parity bits are usually a good place to start checking. The control for all of these can be found in SCICTL1 and SCICTL2.

It would also be good to check if RX is enabled, SCICTL1.RXENA. If enabled you should also check the error flags, which may indicate your issue(RX ERROR, BRKDT, FE, OE, and PE). A description of all of these can be found in SPRUFZ5a.

Regards,
Cody

0 ashok kumar6 over 8 years ago in reply to Cody Watkins

Expert 1790 points

Cody,

Thanks for you are reply.

Board is able to receive characters from the PC. The issue is with SCICTL1.RXENA. bit not enabled.

Please let me know if you have any idea how to intigrate the printf to the non RTOS application.??

Thanks

0 Cody Watkins over 8 years ago in reply to ashok kumar6

TI__Mastermind 42195 points

Ashok,

How printf work ? - C2000 microcontrollers forum - C2000™︎ microcontrollers - TI E2E support forums

e2e.ti.com

Hello, I'm using DELFINO DUAL, I see some example use the printf("message") that allow processor to send "message" to the CCS where you can see in the output

I think this forum post describes it pretty well. Let me know if you have another question! Please try to start new threads if they are unrelated though.

Regards,

Cody