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AM2432: modbus end of frame detection and IRQ

Guillaume Henri
Expert 4376 points
Part Number: AM2432

Tool/software:

Hi Sitara champs,

Is it possible to detect automatically a modbus end of frame to generate an interruption ?

Thank you!

Best,

Guillaume

  • 0
    TI__Mastermind 47851 points
    Guillaume Henri said:
    Is it possible to detect automatically a modbus end of frame to generate an interruption ?

    Can you provide more details ? Modbus RTU or TCP? Which HWIP is used ? Which specific packets need end of frame interrupt generation?

  • 0 in reply to PratheeshGangadhar
    TI__Expert 4376 points

    Hello !

    The customer is expecting a “timeout feature” in MODBUS feature on OMAP2432 USART  as described in the here below extract from a competitor device datasheet :

     

    The Time out feature is characterized here below :

     

    From a firmware point of view, this feature is a true game changer to offload CPU especially for higher baudrates.

    Baudrates to be supported :

    4800 (Customer), 9600 (Customer), 19200 (Customer), 38400 (Customer), 57600 (tools), 115200 (tools), 230400 (tools), 460800 (tools), 921600 (tools)

     

    QUESTION : is there an equivalent function on AM243x or more generally TI UART HW IP blocks?

    Thank you !

    Best,

    Guillaume

  • 0 in reply to Guillaume Henri
    TI__Guru**** 191889 points

    Hello Guillaume

    Thank you.

    I have reached out to the internal experts and will update when i hear back.

    Regards,

    Sreenivasa