AM5728: EtherCAT data not copied to CPU memory

Rasty Slutsker

Expert 1860 points

Part Number: AM5728

Hi,

Problem: output data is not copied from EtherCAT frame to CPU memory.

void PDO_OutputMapping(void)
{

HW_EscReadIsr(((MEM_ADDR *)aPdOutputData), nEscAddrOutputData, nPdOutputSize );

APPL_OutputMapping((UINT16*) aPdOutputData);
}

nPdOutputSize is 11

nEscAddrOutputData is 0x1800.

Please advice.

no-output-data.zip

Thanks

Rasty

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

The RTOS team have been notified. They will respond here.

0 Paula Carrillo over 7 years ago

TI__Mastermind 40580 points

Hi Rasty, please help us with more information, so we can try to reproduce it here. What is your EtherCAT network configuration? how many slaves?
EtherCAT master IgH?, did you modified ESI file? or did you do any changes in EtherCAT slave PD mapping/size?

thank you,
Paula

0 Rasty Slutsker over 7 years ago in reply to Paula Carrillo

Expert 1860 points

Problem happens with non-overlapping pdos only.

You should be able to reproduce it with Twincat if you have separate parts for TX and RX in PDO.

We modified PDO size - 11 bytes in each direction.

We see it with single slave.

Best regards

Rasty

0 Rasty Slutsker over 7 years ago in reply to Rasty Slutsker

Expert 1860 points

Related to non-overlapping PDO Only overlapped PDOs works as expected.

Processors

Processors forum

AM5728: EtherCAT data not copied to CPU memory