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MSP430FR5969-SP: In circuit serial programming via UART (RS-485 application)

Kevin DeFever1
Prodigy 10 points
Part Number: MSP430FR5969-SP
Other Parts Discussed in Thread: MSP430FR5969, MSPBSL

It is clearly understood that development programming can be achieved using the JTAG interface for program updates and debugging.

Application of the MSP430FR5969 will include using the UART for product communications via half-duplex RS485... 
MSP430FR5969 product will be on of several units addressed on the two wire RS-485 bus... all units will communicate with a "master PC" on the bus for telemetry feeds, and accepting operating instructions.

Is it feasible to implement in circuit serial programming such that the MSP430FR5969 can be reprogrammed by the "master" over the same serial interface?


  • 0
    TI__Mastermind 26420 points

    Hello Kevin,

    What you are looking for is referred to as a Bootloader or a BSL.  The FR5969 does have a UART BSL, but to invoke it externally also requires access to the TEST and /RST pins and I'm not sure that it will support half-duplex communication.  You would probably have to write a custom BSL to do what you are wanting... But I think it would be possible.  

    Check the MSPBSL page for more information on our existing bootloaders.  We do provide a few MSPFRBoot examples for main memory BSLs that you can modify.  

    Good luck!

    JD

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