From a26ee57eb8202e7da31049b1761ca74be5184414 Mon Sep 17 00:00:00 2001 From: René Werner Date: Mon, 22 Aug 2016 20:34:29 +0200 Subject: Added support for the Kitten Paw controller This adds support for the 2016 revision of the Kitten Paw [1] replacement controller by Bathroom Epiphanies. [1] http://bathroomepiphanies.com/controllers/ --- keyboards/kitten_paw/matrix.c | 164 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 keyboards/kitten_paw/matrix.c (limited to 'keyboards/kitten_paw/matrix.c') diff --git a/keyboards/kitten_paw/matrix.c b/keyboards/kitten_paw/matrix.c new file mode 100644 index 000000000..46875293f --- /dev/null +++ b/keyboards/kitten_paw/matrix.c @@ -0,0 +1,164 @@ +/* + Copyright 2014 Ralf Schmitt + + 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 +#include +#include "print.h" +#include "debug.h" +#include "util.h" +#include "matrix.h" + +#ifndef DEBOUNCING_DELAY +# define DEBOUNCING_DELAY 5 +#endif +static uint8_t debouncing = DEBOUNCING_DELAY; + +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +static uint8_t read_rows(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; +} + +/* Column pin configuration + * + * col: 0 1 2 3 4 5 6 7 + * pin: PC7 PD5 PD3 PD1 PC2 PD6 PD4 PD2 + * + * Rrr pin configuration + * + * These rrrs uses one 74HC154 4 to 16 bit demultiplexer (low + * active), together with 2 rrrs driven directly from the micro + * controller, to control the 18 rrrs. The rrrs are driven from + * pins B6,5,4,3,2,1,0. + */ +void matrix_init(void) { + DDRC &= ~0b10000100; // Row input pins + DDRD &= ~0b01111110; + PORTC |= 0b10000100; + PORTD |= 0b01111110; + + DDRB |= 0b01111111; // Column output pins + + for (uint8_t i=0; i < MATRIX_ROWS; i++) { + matrix[i] = 0; + matrix_debouncing[i] = 0; + } +} + +uint8_t matrix_scan(void) { + for (uint8_t col = 0; col < MATRIX_COLS; col++) { + select_col(col); + _delay_us(3); + uint8_t rows = read_rows(); + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<