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You have to write to each segment in sequence in a continuous loop. Notice in the example sketch the function that writes to all 4 digital is being continuously called by the function WriteNumber(). If you do it fast enough it creates a persistence of vision (POV) effect and they all appear to be o...

Hi, I am having problems lighting more than on 7 segment at the same time. I follow the code example given, ported to mbed.org and ST NUCLEO-L152RE, but setting subsequent 7 segment digits clears the previous one so I only ever have one lit up. Or rather, if I OR the segment select masks I can have ...