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MSP430FR4133: Possible to slave two processor LCD drives together to drive one LCD?

Robert Clark59
Intellectual 930 points
Part Number: MSP430FR4133

Hi All,

Another idea to drive more segments, using two processors to drive one LCD.

Could the LCD drives be synchronized? Four COMx lines from one processor, with two processors driving segment lines.

Could the two processors be synchronized?

I think plan A would be better, but is it possible? Each processor could manage functions on the touchscreen LCD panel,, while processing independently.

This would be an ideal solution.

If you have any experience with this, PLEASE let me know!

Thank you,

Robert.

  • 0
    TI__Mastermind 38410 points
    Hi,

    I don't think it is a good choice.
    1. If you use one processor to drive this LCD will save money and debug time than using FR4133 combined with 2 processors.
    2. To make the LCD work perfectly, you need to ensure the synchronous timing between COM and SEG. As you use three MCUs, it is really hard. The only thing can synchronize is the clock, but you can't make the code to run at the same time, change the IO state at the same time. Both hardware and software are great challenge.
    3. If you just want to drive this kind of LCD, just try another plan!

    Eason

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