procedure CharliePlexing( ... )

This procedure may be called from within an interrupt procedure.

Each time it is called, the one LED is treated.

The procedure have to be called often enough to have a smooth rendering for the eyes.

If the BOLD option is used, the interface is:

 procedure CharliePlexing(LEDs, B_LEDs: tLED_Mask);

 Where:

     - LEDs is the mask of the LEDs to be on (first is bit 0).

     - B_LEDs is the mask of the LEDs to be BOLD.

• Bold LEDs are lighted during a doubled period than others.

Otherwise the interface is simplified:

 procedure CharliePlexing(LEDs: tLEDs_Mask);

 Where:

     - LEDs is the mask of the LEDs to be on (first is bit 0).