From ed98250e62d9e37218931d09a4216ffe09d3ce3a Mon Sep 17 00:00:00 2001 From: Maarten Dekkers Date: Thu, 12 Jul 2018 21:42:36 +0200 Subject: Add kmini (#3386) * Add kmini * Change keyboard USB description --- keyboards/kmini/matrix.c | 303 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100755 keyboards/kmini/matrix.c (limited to 'keyboards/kmini/matrix.c') diff --git a/keyboards/kmini/matrix.c b/keyboards/kmini/matrix.c new file mode 100755 index 000000000..f0733340c --- /dev/null +++ b/keyboards/kmini/matrix.c @@ -0,0 +1,303 @@ +/* Copyright 2018 Maarten Dekkers + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include +#if defined(__AVR__) +#include +#endif +#include "wait.h" +#include "print.h" +#include "debug.h" +#include "util.h" +#include "matrix.h" +#include "timer.h" + + +/* Set 0 if debouncing isn't needed */ +#ifndef DEBOUNCING_DELAY +# define DEBOUNCING_DELAY 5 +#endif + +#define COL_SHIFTER ((uint32_t)1) + +static uint16_t debouncing_time; +static bool debouncing = false; + + +static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; + +/* matrix state(1:on, 0:off) */ +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +static void init_rows(void); +static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col); +static void unselect_cols(void); +static void select_col(uint8_t col); + +inline +uint8_t matrix_rows(void) { + return MATRIX_ROWS; +} + +inline +uint8_t matrix_cols(void) { + return MATRIX_COLS; +} + +void matrix_init(void) { + unselect_cols(); + init_rows(); + + // initialize matrix state: all keys off + for (uint8_t i=0; i < MATRIX_ROWS; i++) { + matrix[i] = 0; + matrix_debouncing[i] = 0; + } + + matrix_init_quantum(); +} + +uint8_t matrix_scan(void) +{ + // Set col, read rows + for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { + bool matrix_changed = read_rows_on_col(matrix_debouncing, current_col); + if (matrix_changed) { + debouncing = true; + debouncing_time = timer_read(); + } + } + + if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + debouncing = false; + } + + matrix_scan_quantum(); + return 1; +} + +inline +bool matrix_is_on(uint8_t row, uint8_t col) +{ + return (matrix[row] & ((matrix_row_t)1> 4) & _BV(E2 & 0xF)) == 0) + { + // Pin LO, set col bit + current_matrix[row_index] |= (COL_SHIFTER << current_col); + } + else + { + // Pin HI, clear col bit + current_matrix[row_index] &= ~(COL_SHIFTER << current_col); + } + } + else { + if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF))) + { + // Pin HI, set col bit + current_matrix[row_index] |= (COL_SHIFTER << current_col); + } + else + { + // Pin LO, clear col bit + current_matrix[row_index] &= ~(COL_SHIFTER << current_col); + } + } + + // Determine if the matrix changed state + if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) + { + matrix_changed = true; + } + } + + // Unselect cols + unselect_cols(); + + return matrix_changed; +} + +/* Row pin configuration + * row: 0 1 2 3 4 + * pin: D0 D1 D2 D3 D5 + * + * Caps lock uses its own pin E2 + */ +static void init_rows(void) { + DDRD &= ~((1<<0)| (1<<1) | (1<<2) | (1<<3) | (1<<5)); // IN + PORTD &= ~((1<<0)| (1<<1) | (1<<2) | (1<<3) | (1<<5)); // LO + + DDRE &= ~(1<<2); // IN + PORTE |= (1<<2); // HI +} + +/* Columns 0 - 16 + * col 0: B5 + * col 1: B6 + * These columns use a 74HC237D 3 to 8 bit demultiplexer. + * A B C GL1 + * col / pin: PF0 PF1 PC7 PC6 + * 2: 0 0 0 1 + * 3: 1 0 0 1 + * 4: 0 1 0 1 + * 5: 1 1 0 1 + * 6: 0 0 1 1 + * 7: 1 0 1 1 + * 8: 0 1 1 1 + * 9: 1 1 1 1 + * col 10: E6 + * col 11: B0 + * col 12: B7 + * col 13: D4 + * col 14: D6 + * col 15: D7 + * col 16: B4 + */ +static void unselect_cols(void) { + DDRB |= (1<<5) | (1<<6) | (1<<0) | (1<<7) | (1<<4); // OUT + PORTB &= ~((1<<5) | (1<<6) | (1<<0) | (1<<7) | (1<<4)); // LO + + DDRD |= (1<<4) | (1<<6) | (1<<7); // OUT + PORTD &= ~((1<<4) | (1<<6) | (1<<7)); // LO + + DDRE |= (1<<6); // OUT + PORTE &= ~((1<<6)); // LO + + DDRF |= (1<<0) | (1<<1); // OUT + PORTF &= ~((1<<0) | (1<<1)); // LO + + DDRC |= (1<<7) | (1<<6); // OUT + PORTC &= ~((1<<7) | (1<<6)); // LO +} + +static void select_col(uint8_t col) +{ + switch (col) { + case 0: + PORTB |= (1<<5); // HI + break; + case 1: + PORTB |= (1<<6); // HI + break; + case 2: + PORTC |= (1<<6); // HI + break; + case 3: + PORTC |= (1<<6); // HI + PORTF |= (1<<0); // HI + break; + case 4: + PORTC |= (1<<6); // HI + PORTF |= (1<<1); // HI + break; + case 5: + PORTC |= (1<<6); // HI + PORTF |= (1<<0); // HI + PORTF |= (1<<1); // HI + break; + case 6: + PORTC |= (1<<6); // HI + PORTC |= (1<<7); // HI + break; + case 7: + PORTC |= (1<<6); // HI + PORTF |= (1<<0); // HI + PORTC |= (1<<7); // HI + break; + case 8: + PORTC |= (1<<6); // HI + PORTF |= (1<<1); // HI + PORTC |= (1<<7); // HI + break; + case 9: + PORTC |= (1<<6); // HI + PORTF |= (1<<0); // HI + PORTF |= (1<<1); // HI + PORTC |= (1<<7); // HI + break; + case 10: + PORTE |= (1<<6); // HI + break; + case 11: + PORTB |= (1<<0); // HI + break; + case 12: + PORTB |= (1<<7); // HI + break; + case 13: + PORTD |= (1<<4); // HI + break; + case 14: + PORTD |= (1<<6); // HI + break; + case 15: + PORTD |= (1<<7); // HI + break; + case 16: + PORTB |= (1<<4); // HI + break; + } +} -- cgit v1.2.3-24-g4f1b