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29 | const int top_margin; |
29 | const int top_margin; |
30 | const int bottom_margin; |
30 | const int bottom_margin; |
31 | const int plot_height; |
31 | const int plot_height; |
32 | 32 | ||
33 | /// @brief persistent storage - a trail of pixels follow the plotted point. . |
33 | /// @brief persistent storage - a trail of pixels follow the plotted point. . |
34 | static unsigned const PERSIST= 64; |
34 | static unsigned const PERSIST= 40; |
35 | 35 | ||
36 | uint8_t persist_x[PERSIST]; |
36 | uint8_t persist_x[PERSIST]; |
37 | uint8_t persist_y[PERSIST]; |
37 | uint8_t persist_y[PERSIST]; |
38 | uint8_t next_persist; |
38 | uint8_t next_persist; |
39 | }; |
39 | }; |
40 | 40 |