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-rw-r--r--keyboards/dichotemy/matrix.c178
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diff --git a/keyboards/dichotemy/matrix.c b/keyboards/dichotemy/matrix.c
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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_quantum(void) {
+ matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+ matrix_scan_kb();
+}
+
+__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;
+}