168 lines
4.8 KiB
C
168 lines
4.8 KiB
C
/*
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Copyright 2012 Jun Wako
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Copyright 2014 Jack Humbert
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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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#include <stdint.h>
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#include <stdbool.h>
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#if defined(__AVR__)
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#include <avr/io.h>
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#endif
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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 "timer.h"
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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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#elif (MATRIX_COLS <= 16)
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# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
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# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
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# define matrix_bitpop(i) bitpop16(matrix[i])
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# define ROW_SHIFTER ((uint16_t)1)
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#elif (MATRIX_COLS <= 32)
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# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
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# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
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# define matrix_bitpop(i) bitpop32(matrix[i])
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# define ROW_SHIFTER ((uint32_t)1)
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#endif
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#define MAIN_ROWMASK 0xFFF0;
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#define LOWER_ROWMASK 0x1F80;
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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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__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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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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return MATRIX_COLS;
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}
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void matrix_init(void) {
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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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SERIAL_UART_INIT();
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uint32_t timeout = 0;
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//the s character requests the RF slave to send the matrix
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SERIAL_UART_DATA = 's';
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//trust the external keystates entirely, erase the last data
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uint8_t uart_data[7] = {0};
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//there are 10 bytes corresponding to 10 columns, and an end byte
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for (uint8_t i = 0; i < 7; i++) {
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//wait for the serial data, timeout if it's been too long
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//this only happened in testing with a loose wire, but does no
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//harm to leave it in here
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while(!SERIAL_UART_RXD_PRESENT){
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timeout++;
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if (timeout > 10000){
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break;
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}
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}
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uart_data[i] = SERIAL_UART_DATA;
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}
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//check for the end packet, the key state bytes use the LSBs, so 0xE0
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//will only show up here if the correct bytes were recieved
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if (uart_data[6] == 0x96) { //this is an arbitrary binary checksum (10010110)
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//shifting and transferring the keystates to the QMK matrix variable
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//bits 1-12 are row 1, 13-24 are row 2, 25-36 are row 3,
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//bits 37-42 are row 4 (only 6 wide, 1-3 are 0, and 10-12 are 0)
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//bits 43-48 are row 5 (same as row 4)
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/* ASSUMING MSB FIRST */
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matrix[0] = (((uint16_t) uart_data[0] << 8) | ((uint16_t) uart_data[1])) & MAIN_ROWMASK;
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matrix[1] = ((uint16_t) uart_data[1] << 12) | ((uint16_t) uart_data[2] << 4);
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matrix[2] = (((uint16_t) uart_data[3] << 8) | ((uint16_t) uart_data[4])) & MAIN_ROWMASK;
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matrix[3] = (((uint16_t) uart_data[4] << 9) | ((uint16_t) uart_data[5] << 1)) & LOWER_ROWMASK;
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matrix[4] = ((uint16_t) uart_data[5] << 7) & LOWER_ROWMASK;
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/* OK, TURNS OUT THAT WAS A BAD ASSUMPTION */
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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//I've unpacked these into the mirror image of what QMK expects them to be, so...
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matrix[i] = ((matrix[i] * 0x0802LU & 0x22110LU) | (matrix[i] * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16;
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//bithack mirror! Doesn't make any sense, but works - and efficiently.
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}
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}
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matrix_scan_quantum();
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return 1;
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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_matrix_header();
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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phex(row); print(": ");
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print_matrix_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 += matrix_bitpop(i);
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}
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return count;
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}
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