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/*
Copyright 2012 Jun Wako
Copyright 2014 Jack Humbert
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 <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#if defined(__AVR__)
#include <avr/io.h>
#endif
#include "wait.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "timer.h"
#if (MATRIX_COLS <= 8)
# define print_matrix_header() print("\nr/c 01234567\n")
# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
# define matrix_bitpop(i) bitpop(matrix[i])
# define ROW_SHIFTER ((uint8_t)1)
#elif (MATRIX_COLS <= 16)
# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
# define matrix_bitpop(i) bitpop16(matrix[i])
# define ROW_SHIFTER ((uint16_t)1)
#elif (MATRIX_COLS <= 32)
# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
# define matrix_bitpop(i) bitpop32(matrix[i])
# define ROW_SHIFTER ((uint32_t)1)
#endif
#define MAIN_ROWMASK 0xFFF0;
#define LOWER_ROWMASK 0x1F80;
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
__attribute__ ((weak))
void matrix_init_kb(void) {
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void) {
matrix_scan_user();
}
__attribute__ ((weak))
void matrix_init_user(void) {
}
__attribute__ ((weak))
void matrix_scan_user(void) {
}
inline
uint8_t matrix_rows(void) {
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void) {
return MATRIX_COLS;
}
void matrix_init(void) {
matrix_init_quantum();
}
uint8_t matrix_scan(void)
{
SERIAL_UART_INIT();
uint32_t timeout = 0;
//the s character requests the RF slave to send the matrix
SERIAL_UART_DATA = 's';
//trust the external keystates entirely, erase the last data
uint8_t uart_data[7] = {0};
//there are 10 bytes corresponding to 10 columns, and an end byte
for (uint8_t i = 0; i < 7; i++) {
//wait for the serial data, timeout if it's been too long
//this only happened in testing with a loose wire, but does no
//harm to leave it in here
while(!SERIAL_UART_RXD_PRESENT){
timeout++;
if (timeout > 10000){
break;
}
}
uart_data[i] = SERIAL_UART_DATA;
}
//check for the end packet, the key state bytes use the LSBs, so 0xE0
//will only show up here if the correct bytes were recieved
if (uart_data[6] == 0x96) { //this is an arbitrary binary checksum (10010110)
//shifting and transferring the keystates to the QMK matrix variable
//bits 1-12 are row 1, 13-24 are row 2, 25-36 are row 3,
//bits 37-42 are row 4 (only 6 wide, 1-3 are 0, and 10-12 are 0)
//bits 43-48 are row 5 (same as row 4)
/* ASSUMING MSB FIRST */
matrix[0] = (((uint16_t) uart_data[0] << 8) | ((uint16_t) uart_data[1])) & MAIN_ROWMASK;
matrix[1] = ((uint16_t) uart_data[1] << 12) | ((uint16_t) uart_data[2] << 4);
matrix[2] = (((uint16_t) uart_data[3] << 8) | ((uint16_t) uart_data[4])) & MAIN_ROWMASK;
matrix[3] = (((uint16_t) uart_data[4] << 9) | ((uint16_t) uart_data[5] << 1)) & LOWER_ROWMASK;
matrix[4] = ((uint16_t) uart_data[5] << 7) & LOWER_ROWMASK;
/* OK, TURNS OUT THAT WAS A BAD ASSUMPTION */
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
//I've unpacked these into the mirror image of what QMK expects them to be, so...
matrix[i] = ((matrix[i] * 0x0802LU & 0x22110LU) | (matrix[i] * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16;
//bithack mirror! Doesn't make any sense, but works - and efficiently.
}
}
matrix_scan_quantum();
return 1;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & ((matrix_row_t)1<col));
}
inline
matrix_row_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print_matrix_header();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
phex(row); print(": ");
print_matrix_row(row);
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += matrix_bitpop(i);
}
return count;
}
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