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					@ -24,10 +24,8 @@
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					static uint8_t debouncing = DEBOUNCE;
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					// bit array of key state(1:on, 0:off)
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					static matrix_row_t *matrix;
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					static matrix_row_t *matrix_debounced;
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					static matrix_row_t matrix0[MATRIX_ROWS];
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					static matrix_row_t matrix1[MATRIX_ROWS];
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					static matrix_row_t matrix[MATRIX_ROWS];
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					static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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					#define _DDRA (uint8_t *const)&DDRA
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					@ -165,11 +163,9 @@ void matrix_init(void)
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					    // initialize matrix state: all keys off
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					    for (uint8_t i=0; i < MATRIX_ROWS; i++)  {
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					        matrix0[i] = 0;
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					        matrix1[i] = 0;
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					        matrix[i] = 0;
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					        matrix_debouncing[i] = 0;
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					    }
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					    matrix = matrix0;
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					    matrix_debounced = matrix1;
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					}
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					uint8_t matrix_scan(void)
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					@ -178,10 +174,10 @@ uint8_t matrix_scan(void)
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					        pull_column(col);   // output hi on theline
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					        _delay_us(3);       // without this wait it won't read stable value.
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					        for (uint8_t row = 0; row < MATRIX_ROWS; row++) {  // 0-5
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					            bool prev_bit = matrix[row] & ((matrix_row_t)1<<col);
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					            bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
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					            bool curr_bit = !(*row_pin[row] & row_bit[row]);
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					            if (prev_bit != curr_bit) {
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					                matrix[row] ^= ((matrix_row_t)1<<col);
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					                matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
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					                if (debouncing) {
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					                    debug("bounce!: "); debug_hex(debouncing); print("\n");
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					                }
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					@ -195,9 +191,9 @@ uint8_t matrix_scan(void)
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					        if (--debouncing) {
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					            _delay_ms(1);
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					        } else {
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					            matrix_row_t *tmp = matrix_debounced;
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					            matrix_debounced = matrix;
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					            matrix = tmp;
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					            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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					                matrix[i] = matrix_debouncing[i];
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					            }
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					        }
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					    }
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					@ -213,13 +209,13 @@ bool matrix_is_modified(void)
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					inline
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					bool matrix_is_on(uint8_t row, uint8_t col)
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					{
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					    return (matrix_debounced[row] & ((matrix_row_t)1<<col));
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					    return (matrix[row] & ((matrix_row_t)1<<col));
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					}
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					inline
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					matrix_row_t matrix_get_row(uint8_t row)
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					{
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					    return matrix_debounced[row];
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					    return matrix[row];
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					}
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					void matrix_print(void)
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