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@ -1,459 +0,0 @@ |
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/* |
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Copyright 2012 Jun Wako <wakojun@gmail.com> |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/* |
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* scan matrix |
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*/ |
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#include <stdint.h> |
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#include <stdbool.h> |
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#include <avr/io.h> |
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#include "wait.h" |
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#include "print.h" |
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#include "debug.h" |
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#include "util.h" |
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#include "matrix.h" |
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#include "split_util.h" |
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#include "pro_micro.h" |
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#include "config.h" |
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#include "timer.h" |
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#ifdef USE_I2C |
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# include "i2c.h" |
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#else // USE_SERIAL |
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# include "serial.h" |
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#endif |
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#ifndef DEBOUNCE |
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# define DEBOUNCE 5 |
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#endif |
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#if (DEBOUNCE > 0) |
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static uint16_t debouncing_time; |
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static bool debouncing = false; |
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#endif |
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#if (MATRIX_COLS <= 8) |
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# define print_matrix_header() print("\nr/c 01234567\n") |
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# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row)) |
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# define matrix_bitpop(i) bitpop(matrix[i]) |
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# define ROW_SHIFTER ((uint8_t)1) |
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#else |
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# error "Currently only supports 8 COLS" |
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#endif |
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static matrix_row_t matrix_debouncing[MATRIX_ROWS]; |
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#define ERROR_DISCONNECT_COUNT 5 |
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#define ROWS_PER_HAND (MATRIX_ROWS/2) |
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static uint8_t error_count = 0; |
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static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; |
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static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; |
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/* matrix state(1:on, 0:off) */ |
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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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#if (DIODE_DIRECTION == COL2ROW) |
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static void init_cols(void); |
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static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row); |
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static void unselect_rows(void); |
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static void select_row(uint8_t row); |
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static void unselect_row(uint8_t row); |
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#elif (DIODE_DIRECTION == ROW2COL) |
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static void init_rows(void); |
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static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col); |
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static void unselect_cols(void); |
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static void unselect_col(uint8_t col); |
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static void select_col(uint8_t col); |
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#endif |
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__attribute__ ((weak)) |
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void matrix_init_kb(void) { |
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matrix_init_user(); |
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} |
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__attribute__ ((weak)) |
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void matrix_scan_kb(void) { |
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matrix_scan_user(); |
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} |
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__attribute__ ((weak)) |
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void matrix_init_user(void) { |
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} |
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__attribute__ ((weak)) |
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void matrix_scan_user(void) { |
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} |
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inline |
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uint8_t matrix_rows(void) |
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{ |
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return MATRIX_ROWS; |
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} |
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inline |
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uint8_t matrix_cols(void) |
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{ |
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return MATRIX_COLS; |
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} |
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void matrix_init(void) |
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{ |
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debug_enable = true; |
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debug_matrix = true; |
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debug_mouse = true; |
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// initialize row and col |
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#if (DIODE_DIRECTION == COL2ROW) |
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unselect_rows(); |
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init_cols(); |
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#elif (DIODE_DIRECTION == ROW2COL) |
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unselect_cols(); |
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init_rows(); |
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#endif |
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TX_RX_LED_INIT; |
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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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matrix[i] = 0; |
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matrix_debouncing[i] = 0; |
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} |
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matrix_init_quantum(); |
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} |
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uint8_t _matrix_scan(void) |
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{ |
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int offset = isLeftHand ? 0 : (ROWS_PER_HAND); |
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#if (DIODE_DIRECTION == COL2ROW) |
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// Set row, read cols |
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for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) { |
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# if (DEBOUNCE > 0) |
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bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row); |
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if (matrix_changed) { |
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debouncing = true; |
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debouncing_time = timer_read(); |
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} |
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# else |
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read_cols_on_row(matrix+offset, current_row); |
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# endif |
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} |
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#elif (DIODE_DIRECTION == ROW2COL) |
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// Set col, read rows |
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for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { |
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# if (DEBOUNCE > 0) |
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bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col); |
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if (matrix_changed) { |
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debouncing = true; |
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debouncing_time = timer_read(); |
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} |
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# else |
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read_rows_on_col(matrix+offset, current_col); |
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# endif |
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} |
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#endif |
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# if (DEBOUNCE > 0) |
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if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCE)) { |
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for (uint8_t i = 0; i < ROWS_PER_HAND; i++) { |
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matrix[i+offset] = matrix_debouncing[i+offset]; |
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} |
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debouncing = false; |
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} |
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# endif |
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return 1; |
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} |
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#ifdef USE_I2C |
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// Get rows from other half over i2c |
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int i2c_transaction(void) { |
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int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0; |
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int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE); |
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if (err) goto i2c_error; |
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// start of matrix stored at 0x00 |
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err = i2c_master_write(0x00); |
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if (err) goto i2c_error; |
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// Start read |
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err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ); |
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if (err) goto i2c_error; |
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if (!err) { |
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int i; |
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for (i = 0; i < ROWS_PER_HAND-1; ++i) { |
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matrix[slaveOffset+i] = i2c_master_read(I2C_ACK); |
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} |
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matrix[slaveOffset+i] = i2c_master_read(I2C_NACK); |
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i2c_master_stop(); |
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} else { |
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i2c_error: // the cable is disconnceted, or something else went wrong |
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i2c_reset_state(); |
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return err; |
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} |
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return 0; |
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} |
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#else // USE_SERIAL |
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int serial_transaction(void) { |
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int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0; |
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if (serial_update_buffers()) { |
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return 1; |
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} |
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for (int i = 0; i < ROWS_PER_HAND; ++i) { |
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matrix[slaveOffset+i] = serial_slave_buffer[i]; |
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} |
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return 0; |
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} |
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#endif |
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uint8_t matrix_scan(void) |
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{ |
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uint8_t ret = _matrix_scan(); |
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#ifdef USE_I2C |
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if( i2c_transaction() ) { |
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#else // USE_SERIAL |
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if( serial_transaction() ) { |
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#endif |
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// turn on the indicator led when halves are disconnected |
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TXLED1; |
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error_count++; |
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if (error_count > ERROR_DISCONNECT_COUNT) { |
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// reset other half if disconnected |
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int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0; |
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for (int i = 0; i < ROWS_PER_HAND; ++i) { |
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matrix[slaveOffset+i] = 0; |
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} |
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} |
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} else { |
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// turn off the indicator led on no error |
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TXLED0; |
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error_count = 0; |
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} |
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matrix_scan_quantum(); |
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return ret; |
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} |
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void matrix_slave_scan(void) { |
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_matrix_scan(); |
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int offset = (isLeftHand) ? 0 : ROWS_PER_HAND; |
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#ifdef USE_I2C |
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for (int i = 0; i < ROWS_PER_HAND; ++i) { |
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i2c_slave_buffer[i] = matrix[offset+i]; |
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} |
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#else // USE_SERIAL |
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for (int i = 0; i < ROWS_PER_HAND; ++i) { |
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serial_slave_buffer[i] = matrix[offset+i]; |
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} |
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#endif |
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} |
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bool matrix_is_modified(void) |
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{ |
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if (debouncing) return false; |
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return true; |
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} |
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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[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[row]; |
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} |
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void matrix_print(void) |
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{ |
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print("\nr/c 0123456789ABCDEF\n"); |
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) { |
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phex(row); print(": "); |
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pbin_reverse16(matrix_get_row(row)); |
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print("\n"); |
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} |
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} |
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uint8_t matrix_key_count(void) |
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{ |
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uint8_t count = 0; |
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) { |
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count += bitpop16(matrix[i]); |
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} |
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return count; |
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} |
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#if (DIODE_DIRECTION == COL2ROW) |
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static void init_cols(void) |
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{ |
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for(uint8_t x = 0; x < MATRIX_COLS; x++) { |
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uint8_t pin = col_pins[x]; |
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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} |
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static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) |
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{ |
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// Store last value of row prior to reading |
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matrix_row_t last_row_value = current_matrix[current_row]; |
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// Clear data in matrix row |
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current_matrix[current_row] = 0; |
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// Select row and wait for row selecton to stabilize |
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select_row(current_row); |
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wait_us(30); |
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// For each col... |
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for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) { |
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// Select the col pin to read (active low) |
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uint8_t pin = col_pins[col_index]; |
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uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)); |
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// Populate the matrix row with the state of the col pin |
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current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index); |
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} |
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// Unselect row |
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unselect_row(current_row); |
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return (last_row_value != current_matrix[current_row]); |
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} |
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static void select_row(uint8_t row) |
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{ |
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uint8_t pin = row_pins[row]; |
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_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT |
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_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW |
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} |
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static void unselect_row(uint8_t row) |
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{ |
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uint8_t pin = row_pins[row]; |
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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static void unselect_rows(void) |
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{ |
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for(uint8_t x = 0; x < ROWS_PER_HAND; x++) { |
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uint8_t pin = row_pins[x]; |
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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} |
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#elif (DIODE_DIRECTION == ROW2COL) |
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static void init_rows(void) |
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{ |
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for(uint8_t x = 0; x < ROWS_PER_HAND; x++) { |
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uint8_t pin = row_pins[x]; |
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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} |
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static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) |
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{ |
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bool matrix_changed = false; |
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// Select col and wait for col selecton to stabilize |
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select_col(current_col); |
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wait_us(30); |
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// For each row... |
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for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) |
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{ |
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// Store last value of row prior to reading |
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matrix_row_t last_row_value = current_matrix[row_index]; |
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// Check row pin state |
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if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0) |
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{ |
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// Pin LO, set col bit |
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current_matrix[row_index] |= (ROW_SHIFTER << current_col); |
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} |
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else |
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{ |
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// Pin HI, clear col bit |
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current_matrix[row_index] &= ~(ROW_SHIFTER << current_col); |
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} |
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// Determine if the matrix changed state |
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if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) |
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{ |
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matrix_changed = true; |
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} |
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} |
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// Unselect col |
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unselect_col(current_col); |
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return matrix_changed; |
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} |
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static void select_col(uint8_t col) |
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{ |
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uint8_t pin = col_pins[col]; |
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_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT |
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_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW |
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} |
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static void unselect_col(uint8_t col) |
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{ |
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uint8_t pin = col_pins[col]; |
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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static void unselect_cols(void) |
|
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{ |
|
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for(uint8_t x = 0; x < MATRIX_COLS; x++) { |
|
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|
uint8_t pin = col_pins[x]; |
|
|
|
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN |
|
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|
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI |
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} |
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} |
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#endif |