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1/*
2Copyright 2012 Jun Wako
3Copyright 2014 Jack Humbert
4
5This program is free software: you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation, either version 2 of the License, or
8(at your option) any later version.
9
10This program is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program. If not, see <http://www.gnu.org/licenses/>.
17*/
18#include <stdint.h>
19#include <stdbool.h>
20#if defined(__AVR__)
21#include <avr/io.h>
22#endif
23#include "wait.h"
24#include "print.h"
25#include "debug.h"
26#include "util.h"
27#include "matrix.h"
28#include "timer.h"
29#include "debounce.h"
30
31#if (MATRIX_COLS <= 8)
32# define print_matrix_header() print("\nr/c 01234567\n")
33# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
34# define matrix_bitpop(i) bitpop(matrix[i])
35# define ROW_SHIFTER ((uint8_t)1)
36#elif (MATRIX_COLS <= 16)
37# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
38# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
39# define matrix_bitpop(i) bitpop16(matrix[i])
40# define ROW_SHIFTER ((uint16_t)1)
41#elif (MATRIX_COLS <= 32)
42# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
43# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
44# define matrix_bitpop(i) bitpop32(matrix[i])
45# define ROW_SHIFTER ((uint32_t)1)
46#endif
47
48/* matrix state(1:on, 0:off) */
49static matrix_row_t matrix[MATRIX_ROWS];
50
51
52__attribute__ ((weak))
53void matrix_init_kb(void) {
54 matrix_init_user();
55}
56
57__attribute__ ((weak))
58void matrix_scan_kb(void) {
59 matrix_scan_user();
60}
61
62__attribute__ ((weak))
63void matrix_init_user(void) {
64}
65
66__attribute__ ((weak))
67void matrix_scan_user(void) {
68}
69
70inline
71uint8_t matrix_rows(void) {
72 return MATRIX_ROWS;
73}
74
75inline
76uint8_t matrix_cols(void) {
77 return MATRIX_COLS;
78}
79
80void matrix_init(void) {
81 debounce_init(MATRIX_ROWS);
82 matrix_init_quantum();
83}
84
85uint8_t matrix_scan(void)
86{
87 bool matrix_has_changed = false;
88
89 SERIAL_UART_INIT();
90
91 uint32_t timeout = 0;
92
93 //the s character requests the RF slave to send the matrix
94 SERIAL_UART_DATA = 's';
95
96 //trust the external keystates entirely, erase the last data
97 uint8_t uart_data[17] = {0};
98
99 //there are 16 bytes corresponding to 16 columns, and an end byte
100 for (uint8_t i = 0; i < 17; i++) {
101 //wait for the serial data, timeout if it's been too long
102 //this only happened in testing with a loose wire, but does no
103 //harm to leave it in here
104 while(!SERIAL_UART_RXD_PRESENT){
105 timeout++;
106 if (timeout > 10000){
107 break;
108 }
109 }
110 uart_data[i] = SERIAL_UART_DATA;
111 }
112
113 //check for the end packet, the key state bytes use the LSBs, so 0xE0
114 //will only show up here if the correct bytes were recieved
115 if (uart_data[10] == 0xE0)
116 {
117 //shifting and transferring the keystates to the QMK matrix variable
118 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
119 matrix[i] = (uint16_t) uart_data[i*2] | (uint16_t) uart_data[i*2+1] << 8;
120 }
121 }
122
123 debounce(matrix, matrix, MATRIX_ROWS, matrix_has_changed);
124
125 matrix_scan_quantum();
126
127 return matrix_has_changed;
128}
129
130inline
131bool matrix_is_on(uint8_t row, uint8_t col)
132{
133 return (matrix[row] & ((matrix_row_t)1<<col));
134}
135
136inline
137matrix_row_t matrix_get_row(uint8_t row)
138{
139 return matrix[row];
140}
141
142void matrix_print(void)
143{
144 print_matrix_header();
145
146 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
147 phex(row); print(": ");
148 print_matrix_row(row);
149 print("\n");
150 }
151}
152
153uint8_t matrix_key_count(void)
154{
155 uint8_t count = 0;
156 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
157 count += matrix_bitpop(i);
158 }
159 return count;
160}