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Eval Board AM3359 with Display and Ethercat

LucaM
Prodigy 230 points
Other Parts Discussed in Thread: AM3359, AM3358, TMDXEVM3358

Hello,

I need to test both Ethercat and a 7'' LCD Display with AM3359.

1) Is there some problem to configure both the peripherals int he same uP?

2) Is there an eval board of TI for this purpose? I see that tmdxice3359 has AM3359 uP with Ethercat but no display, while TMDXEVM3358 has the AM3358 uP with display but no Ethercat. A solution which comprises both Ethercat and display?

Thanks in advance.

  • 0
    TI__Mastermind 44306 points

    IGianluca,

    if you need two port EtherCAT (slave) with a display this is difficult. The pin-mux doesn't really support that.

    What is your application?

    Regards.

  • 0 in reply to Frank Walzer
    Prodigy 230 points

    Thanks Frank,

    it's an industrial application. We need Ethercat industrial interface but we would like to have also the possibility to provide the connections for an LCD display.

    Is it possible to put only one Ethercat slave port and the display?

    Regards.

  • 0 in reply to LucaM
    TI__Mastermind 44306 points

    Gianluca,

    I am not sure where EtherCAT slave with one port makes sense. It then always needs to be the last in a chain.

    Generally you can combine a 16-bit LCD with 2 PRU-MIIs. It depends however on what other peripherals are needed. So you will have to do a small pin-mux exercise using your block diagram and the pin-mux tool. This is the first step for any AM335x design anyway.

    Regards.

  • 0 in reply to Frank Walzer
    Intellectual 425 points

    Frank,

    Perhaps you can spell this out. As after looking at the pin-mux in the datasheet, I don't see any reasonable use of the LCD signals when the PRU/Ethernet signals are being used. How can one get 16-bit LCD use in a dual-port EtherCat solution. I would like to know this too.

    Thanks,

    Matt

  • 0 in reply to Matt Pope
    TI__Guru 62855 points

    The AM335x PRU Ethernet port 0 consumes the same terminals as LCD_DATA[15:8] so you would only be able to implement a color display with eight bits of color.  This may also require you to manipulate the data in the display buffer to shift the more significant color bits down into the lower bits connected to the display.

    Have you considered other peripheral interfaces to connect a display.  For example, there may be some SPI or I2C based displays that  meet your requirements.

    Regards,
    Paul

  • 0 in reply to peaves
    Prodigy 10 points

    I have the same problems. Need to combine ethercat and a 7" resistive touch-display. is ist possible to connect a touch-display (SPI, I2C,....) to the ICE or IDK????

    or is it possible to combine the tmdssk3358 and tmdxice3359 or other boards??

    and sorry about the broken english - i´m german :-)

    regards,

    ulf

     

  • 0 in reply to Ulf Stabenow
    TI__Mastermind 44306 points

    Ulf,

    yes you can use SPI or I2C interfaces together with EtherCAT slave on AM335x. You might want to have a look at the ICE schematics and the expansion connectors.

    Regards.