TMS570LS1224: MibSpi Slave receive operation

Varun Malladi

Part Number: TMS570LS1224
Other Parts Discussed in Thread: HALCOGEN, TMS570LS3137

Hello,

I am trying to communicate tms570ls1224 as MibSpi3 slave and when i send 8 16-bits from the master to the slave I see only the first word.

I have TMS570LS12X Launchpad: Launchpad does not have MibSpi3 CS0 pin on the launchpad. Is CS0 pin must? If it is, is there any workaround?
I have kept it as CS1 for now and the picture is my Halcogen Configuration for TG0. I am using TG0.
I have configured SIMO,SOMI,CLK, CS1 as necessary pins functional with input/output.
Are any of my configs wrong? Like Trigger events?
What should I do to receive full 8 words from the master? The Master SPI would send all words in one transfer( meaning the CS is active for all the words

Thank you in advance.

Regards

Varun

over 6 years ago

0 Miro over 6 years ago

TI__Mastermind 21425 points

Hello Varun,
On TMS570LS12X Launchpad nCS0 is exposed on J6 pin 5.

Best regards,
Miro

0 Varun Malladi over 6 years ago in reply to Miro

Intellectual 270 points

Thanks for the reply.
Yes its on J6-5th pin.

But I am still receiving only first word. If i activate the CS Hold, I get garbage values after the first correct word. How to trigger the Mibspi to collect data once CS0 pin goes low?

Is there any configuration to do that? I dont see a CS0 as trigger source.

Regards
Varun

0 Miro over 6 years ago in reply to Varun Malladi

TI__Mastermind 21425 points

Hello Varun,

Attached is working example (Master TMS570LS3137 (HDK )and Slave TMS570LS1224 - Launchpad ) with HALCoGen projects as well.

3021.mibspi_master_slave.zip

Best regards,

Miro

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TMS570LS1224: MibSpi Slave receive operation