From e094cd42b578bc1f378c4fd5b1c6efe112ec7073 Mon Sep 17 00:00:00 2001 From: Vadim Brodsky Date: Fri, 13 Oct 2017 16:20:56 -0400 Subject: Add support for the JJ40 Keyboard (#1834) * Add support for JJ40 * Update readme * Update maintaner --- keyboards/jj40/matrix.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 keyboards/jj40/matrix.c (limited to 'keyboards/jj40/matrix.c') diff --git a/keyboards/jj40/matrix.c b/keyboards/jj40/matrix.c new file mode 100644 index 0000000000..140026013f --- /dev/null +++ b/keyboards/jj40/matrix.c @@ -0,0 +1,106 @@ +/* +Copyright 2017 Luiz Ribeiro + +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 + +#include "matrix.h" + +#ifndef DEBOUNCE +# define DEBOUNCE 5 +#endif + +static uint8_t debouncing = DEBOUNCE; + +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +void matrix_init(void) { + // all outputs for rows high + DDRB = 0xFF; + PORTB = 0xFF; + // all inputs for columns + DDRA = 0x00; + DDRC &= ~(0x111111<<2); + DDRD &= ~(1<> 1) & 0x55) | ((x << 1) & 0xaa); + x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc); + x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0); + return x; +} + +uint8_t matrix_scan(void) { + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + matrix_set_row_status(row); + _delay_us(5); + + matrix_row_t cols = ( + // cols 0..7, PORTA 0 -> 7 + (~PINA) & 0xFF + ) | ( + // cols 8..13, PORTC 7 -> 0 + bit_reverse((~PINC) & 0xFF) << 8 + ) | ( + // col 14, PORTD 7 + ((~PIND) & (1 << PIND7)) << 7 + ); + + if (matrix_debouncing[row] != cols) { + matrix_debouncing[row] = cols; + debouncing = DEBOUNCE; + } + } + + if (debouncing) { + if (--debouncing) { + _delay_ms(1); + } else { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + } + } + + matrix_scan_user(); + + return 1; +} + +inline matrix_row_t matrix_get_row(uint8_t row) { + return matrix[row]; +} + +void matrix_print(void) { +} -- cgit v1.2.3