29 lines
762 B
C
29 lines
762 B
C
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#ifndef _IC74HC595_H_
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#define _IC74HC595_H_
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// We save 4 pins by updating all 3 shift registers at once
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// with one clock and one update signal. Each shift register
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// only needs its own data line.
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#define PIN_74HC595_SCOREBOARD_CLOCK 11
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#define PIN_74HC595_MATRIX_CLOCK 12
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#define PIN_74HC595_MATRIX_UPDATE 8
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#define PIN_74HC595_SCOREBOARD_UPDATE 17
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#define PIN_74HC595_MATRIX_DATA 18
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#define PIN_74HC595_SCOREBOARD_DATA 14
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typedef struct IC74HC595 {
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uint8_t updatepin;
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uint8_t datapin;
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uint8_t clockpin;
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} IC74HC595;
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extern IC74HC595 matrixcols;
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extern IC74HC595 scoreboard;
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int init74HC595(IC74HC595 *sr);
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int writeIC74HC595Char(IC74HC595 *sr, uint8_t value, uint8_t order);
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#endif // _IC74HC595_H_
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