Dot matrix audio spectrum visualiser based on an stm32f107 STM eval board and several chained MAX2719 drivers
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stm32f107-audio-dotmatrix-v.../User/scrolltext.h

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#ifndef SCROLLTEXT_H
#define SCROLLTEXT_H
#include "dotmatrix.h"
#include "timebase.h"
volatile extern bool text_moving;
void printtext(DotMatrix_Cfg *disp, const char *text, int x, int y);
void scrolltext(DotMatrix_Cfg *disp, const char *text, ms_time_t step);
#endif // SCROLLTEXT_H