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@@ -68,9 +68,15 @@ extern "C" volatile uint32_t _millis;
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#include "HAL_timers.h"
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#include "HardwareSerial.h"
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-#define ST7920_DELAY_1 DELAY_NS(600)
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-#define ST7920_DELAY_2 DELAY_NS(750)
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-#define ST7920_DELAY_3 DELAY_NS(750)
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+#ifndef ST7920_DELAY_1
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+ #define ST7920_DELAY_1 DELAY_NS(600)
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+#endif
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+#ifndef ST7920_DELAY_2
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+ #define ST7920_DELAY_2 DELAY_NS(750)
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+#endif
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+#ifndef ST7920_DELAY_3
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+ #define ST7920_DELAY_3 DELAY_NS(750)
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+#endif
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extern HalSerial usb_serial;
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