EMAC RECEIVING on OMAPL138

yugy

Intellectual 385 points

Other Parts Discussed in Thread: OMAPL138, SYSCONFIG

Hello,

I have got a trouble for weeks.

I am using EMAC to send and receive datas.Sending is OK,but receiving not.

I sent datas to OMAPL138 board with broadcast packets and normal packets on the host PC .

On the omapl138,I can see RXBCASTFRAMES and RXFRAGMENTS register increasing.

But when I checked RXINTSTATRAW register,I found it always be 0. Did it mean there was no packet received?

Also I found RXFILTERED register increasing.So I think all packets may be filtered.

How can i receive the packets?

Part of registers were set below:

// enable receive and transmit channel interrupts.

EMAC->RXINTMASKSET = 1;

EMAC->TXINTMASKSET = 1;

// enable unicast chan 0 only.

EMAC->RXUNICASTSET = 0x01;

//enable reception of almost all frames inc error

EMAC->RXMBPENABLE = 0x01E02020;

// enable receive

EMAC->RXCONTROL = 1;

How can I fix this problem?Thank you.

Best regards,

yugy

over 14 years ago

0 yugy over 14 years ago

Intellectual 385 points

Hi,

The RXGOODFRAMES statistics register was not 0.

But RXINTSTATRAW register was always 0.

Why?Anyone know?

Thank you.

0 yugy over 14 years ago in reply to yugy

Intellectual 385 points

// disable all auto functionality for loopback.

phy_reg = phyRegRead(g_active_phy_id, 27);

SETBIT(phy_reg, bitval_u32[15]);

phyRegWrite(g_active_phy_id, 27, phy_reg);

What do the codes mean? Will it cause receiving failure?

Any document about phy register?

I can't find it in sprufl5a(TMS320C674x and OMAP-L1x Processor Ethernet Media Access Controller (EMAC) and Management Data Input and Output (MDIO) Module).pdf.

0 yugy over 14 years ago in reply to yugy

Intellectual 385 points

I have solve the problem.thank you.

0 jc-ti over 14 years ago in reply to yugy

TI__Mastermind 27585 points

Hi Yugy, can you give a brief description on what you did to solve this, for the benefit of others with the same issue in the future? Thanks

Jeff

0 yugy over 14 years ago in reply to jc-ti

Intellectual 385 points

the SYSCONFIG KICKR 0 and SYSCONFIG KICKR 1 may be locked.

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EMAC RECEIVING on OMAPL138