Does CPTS detect the Ethernet Port Events by checking what?

Yuta Esaka

Hi.

I'm using AM335x GeneralPurpose EVM to implement PTP(IEEE1588). But, even if it transmits a PTP time sync packet, CPTS cannot detect an Ethernet port transmit event. In addition, even if it receives a PTP packet, it does not detect an Ethernet port receive event.

Does anything occur as a cause of this problem? Incidentally, it can detect other events(Timestamp push event, Timestamp rollover event and Timestamp half rollover event).

thanks.

over 12 years ago

0 Mugunthan V N over 12 years ago

TI__Intellectual 2750 points

Yuta Esaka

Can you verify whether you have enabled all the configuration bits properly in CPSW port registers for timestamping packets.

Regards
Mugunthan V N

0 Yuta Esaka over 12 years ago in reply to Mugunthan V N

Prodigy 80 points

Mugunthan

Thanks for your reply.

I have enabled the following bits of CPSW port registers.

*P1_CONTROL Register(P1_TS_320, P1_TS_319, P1_TS_129, P1_TS_ANNEX_D_EN, P1_TS_TX_EN, P1_TS_RX_EN)

*P1_TS_SEQ_MTYPE Register(P1_TS_MSG_TYPE_EN)

Is an additional setting required in order to detect an Ethernet port events?

My another register settings for timestamping is shown below.

*CPTS_CONTROL Register(HW4_TS_PUSH_EN, HW3_TS_PUSH_EN, HW2_TS_PUSH_EN, HW1_TS_PUSH_EN, CPTS_EN)

*CPTS_INT_ENABLE Register(TS_PEND_EN)

*CM_CPTS_RFT_CLKSEL Register(CLK_SEL=0)

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Does CPTS detect the Ethernet Port Events by checking what?