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Cascading Dot Matrix and STM32

In order to connect the displays in cascading mode, the data output pin (Dout) of one is connected to data input pin (Din) of the other display. All the displays are connected to the same CS pin.

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LED dot matrix and STM32

Now in order to display any character (For eg ‘A’), Think of the Registers from 0x01 to 0x08 as the addresses of the 8 ROWs and we need to turn the respective LEDs ON in each ROW.

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