TMS570LC4357: TMS570LC4357

sichen MU

Part Number: TMS570LC4357
Other Parts Discussed in Thread: TMS570LS3137, HALCOGEN

I am testing EMAC in TMS570LC4357 , I can see PHY RXD0 - RXD3 RX_DV signals, but MCU not enter EMACRxIntISR interrupt service program ,

but software run in TMS570LS3137 is correct, I just modify Input Multiplexing PINMMR87 PINMMR89 PINMMR90 PINMMR91 and VCLKACON1 = 0x1090009,

all pins is same in two MCU , and frequency is 160M

over 4 years ago

+1 QJ Wang over 4 years ago

TI__Guru**** 196566 points

Hi Sichen,

We have two lwip examples: lwip demo and active webserver demo. Both demos have a CCS example project for TMS570LC43x device.

Here is the link to download the lwip demo:

http://software-dl.ti.com/hercules/hercules_docs/latest/hercules/Examples/Examples.html#lightweight-ip-lwip-demo

+1 sichen MU over 4 years ago in reply to QJ Wang

Prodigy 50 points

TX0HDP = 0xFC520000 ，0xFC520000(EMAC_CTRL_RAM_0_BASE) is filled data according to Figure 32-5. Basic Descriptor Format, then initiates transmit DMA operations, but not run to EMACTxIntISR interrupt service program

+1 sichen MU over 4 years ago in reply to sichen MU

Prodigy 50 points

hi, 0xFC520000(EMAC_CTRL_RAM_0_BASE) big-endian(TMS570LS3137) and little-endian(TMS570LC4357) ?

+1 QJ Wang over 4 years ago in reply to sichen MU

TI__Guru**** 196566 points

Both TMS570LS3137 and TMS570LC4357 are big-endian.

For TMS570LC43x EMAC, the CPU reads/writes to EMAC CPPI memory are byte-swapped. This is a bug.

The workaround is:

The software must apply byte swapping before writing data to the CPPI memory, or after reading the CPPI memory. This is already done if using HalCoGen to develop the software.

Please refer to HL_emac.c generated by HalCoGen. EMACSwizzleData() is called to swap the bytes.

Arm-based microcontrollers

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TMS570LC4357: TMS570LC4357