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MSP430FR5729: COMMUNICATION PROBLEM

Part Number: MSP430FR5729
Other Parts Discussed in Thread: TM4C123BE6PM

HELLO,

I HAVE USED TM4C123BE6PM & MSP430FR5729 MICRO CONTROLLER IN MY DESIGN.BOTH CONTROLLER ARE POWERED ON SAME POWER SUPPLY. THEY ARE COMMUNICATE WITH EACH OTHER DIRECTLY THROUGH UART. IN TM123 MICRO. I HAVE USED UART7 (PE1,PE0) & IN FR MICRO. UCA0 (P2.0,P2.1) UART ARE USED. BUT DURING TESTING I AM FACING PROBLEM OF 'TIME OUT ERROR' ON MODBUS POLL SOFTWARE. I HAVE ALREADY CHECKED MY CONNECTION MEANS TX INTO RX & RX INTO TX FOR SERIAL COMMUNICATION. IS ANYONE HAS SOLUTION REGARDING THIS PROBLEM THEN PLS REPLY ASAP.

REGADS,

DIPESH KARLI

  • Hello Dipesh,

    Is the MSP430FR5729 the master or slave in Modbus communication? Does your Modbus poll software refer to the TM4C or MSP430? The issue could be something as simple as baud rate mismatch but it is impossible to narrow your issue without the proper history, code initialization, debug efforts, or oscilloscope/logic analyzer screenshots. e2e.ti.com/.../

    Regards,
    Ryan