Animator is a device, rather 5×16 matrix LED, which are used to display simple animation . Initially, the device serves to something completely different and it was controlled directly from the parallel port for the program written in Pascal. The idea has proved to be a bit pointless because the program does not provide an even faster refresh rate. LPT port had already been occupied by an LCD display 2×16, so I built an adapter into a serial port (for uprocesorze AT90S2313) and wrote the software.
Interruption of timer a0 (listing below) results in an increase in variable “Item”, and thus monitoring and subsequent columns display podanien PORTB (anod LEDs) with another variable array. The display is refreshed with a frequency of 50Hz.
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