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-rw-r--r--keyboards/converter/xt_usb/matrix.c309
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diff --git a/keyboards/converter/xt_usb/matrix.c b/keyboards/converter/xt_usb/matrix.c
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+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+Copyright 2016 Ethan Apodaca <papodaca@gmail.com>
+
+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>
+#include "action.h"
+#include "print.h"
+#include "util.h"
+#include "debug.h"
+#include "xt.h"
+#include "matrix.h"
+
+
+static void matrix_make(uint8_t code);
+static void matrix_break(uint8_t code);
+
+static uint8_t matrix[MATRIX_ROWS];
+#define ROW(code) (code>>3)
+#define COL(code) (code&0x07)
+
+__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) {
+}
+
+void matrix_init(void)
+{
+ debug_enable = true;
+ xt_host_init();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+
+ matrix_init_quantum();
+}
+
+// convert E0-escaped codes into unused area
+static uint8_t move_e0code(uint8_t code) {
+ switch(code) {
+ // Original IBM XT keyboard has these keys
+ case 0x37: return 0x54; // Print Screen
+ case 0x46: return 0x55; // Ctrl + Pause
+ case 0x1C: return 0x6F; // Keypad Enter
+ case 0x35: return 0x7F; // Keypad /
+
+ // Any XT keyobard with these keys?
+ // http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
+ // https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc
+ case 0x5B: return 0x5A; // Left GUI
+ case 0x5C: return 0x5B; // Right GUI
+ case 0x5D: return 0x5C; // Application
+ case 0x5E: return 0x5D; // Power(not used)
+ case 0x5F: return 0x5E; // Sleep(not used)
+ case 0x63: return 0x5F; // Wake (not used)
+ case 0x48: return 0x60; // Up
+ case 0x4B: return 0x61; // Left
+ case 0x50: return 0x62; // Down
+ case 0x4D: return 0x63; // Right
+ case 0x52: return 0x71; // Insert
+ case 0x53: return 0x72; // Delete
+ case 0x47: return 0x74; // Home
+ case 0x4F: return 0x75; // End
+ case 0x49: return 0x77; // Home
+ case 0x51: return 0x78; // End
+ case 0x1D: return 0x7A; // Right Ctrl
+ case 0x38: return 0x7C; // Right Alt
+ }
+ return 0x00;
+}
+
+uint8_t matrix_scan(void)
+{
+ static enum {
+ INIT,
+ E0,
+ // Pause: E1 1D 45, E1 9D C5
+ E1,
+ E1_1D,
+ E1_9D,
+ } state = INIT;
+
+ uint8_t code = xt_host_recv();
+ if (!code) return 0;
+ xprintf("%02X ", code);
+ switch (state) {
+ case INIT:
+ switch (code) {
+ case 0xE0:
+ state = E0;
+ break;
+ case 0xE1:
+ state = E1;
+ break;
+ default:
+ if (code < 0x80)
+ matrix_make(code);
+ else
+ matrix_break(code & 0x7F);
+ break;
+ }
+ break;
+ case E0:
+ switch (code) {
+ case 0x2A:
+ case 0xAA:
+ case 0x36:
+ case 0xB6:
+ //ignore fake shift
+ state = INIT;
+ break;
+ default:
+ if (code < 0x80)
+ matrix_make(move_e0code(code));
+ else
+ matrix_break(move_e0code(code & 0x7F));
+ state = INIT;
+ break;
+ }
+ break;
+ case E1:
+ switch (code) {
+ case 0x1D:
+ state = E1_1D;
+ break;
+ case 0x9D:
+ state = E1_9D;
+ break;
+ default:
+ state = INIT;
+ break;
+ }
+ break;
+ case E1_1D:
+ switch (code) {
+ case 0x45:
+ matrix_make(0x55);
+ break;
+ default:
+ state = INIT;
+ break;
+ }
+ break;
+ case E1_9D:
+ switch (code) {
+ case 0x45:
+ matrix_break(0x55);
+ break;
+ default:
+ state = INIT;
+ break;
+ }
+ break;
+ default:
+ state = INIT;
+ }
+ matrix_scan_quantum();
+ return 1;
+}
+
+inline
+uint8_t matrix_get_row(uint8_t row)
+{
+ return matrix[row];
+}
+
+inline
+static void matrix_make(uint8_t code)
+{
+ if (!matrix_is_on(ROW(code), COL(code))) {
+ matrix[ROW(code)] |= 1<<COL(code);
+ }
+}
+
+inline
+static void matrix_break(uint8_t code)
+{
+ if (matrix_is_on(ROW(code), COL(code))) {
+ matrix[ROW(code)] &= ~(1<<COL(code));
+ }
+}
+
+void matrix_clear(void)
+{
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+ return (matrix_get_row(row) & (1<<col));
+}
+
+#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))
+#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))
+#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))
+#endif
+
+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");
+ }
+}
+
+/*
+XT Scancodes
+============
+- http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
+- https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc
+
+01-53: Normal codes used in original XT keyboard
+54-7F: Not used in original XT keyboard
+
+ 0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 50 - - - - * * x x x x * * * o o o
+ 60 * * * * x x x x x x x x x x x *
+ 70 x * * x * * x * * x * x * x x *
+
+-: codes existed in original XT keyboard
+*: E0-escaped codes converted into unused code area(internal use in TMK)
+x: Non-espcaped codes(not used in real keyboards probably, for CodeSet2-CodeSet1 translation purpose)
+o: reserved
+
+Usage in TMK:
+
+ 00 (reserved) DO NOT USE
+ 54 PrintScr*
+ 55 Pause*
+ 56 Euro2
+ 57 F11
+ 58 F12
+ 59 Keypad =
+ 5A LGUI*
+ 5B RGUI*
+ 5C APP*
+ 5D (reserved)
+ 5E (reserved)
+ 5F (reserved)
+ 60 cursor*
+ 61 cursor*
+ 62 cursor*
+ 63 cursor*
+ 64 F13
+ 65 F14
+ 66 F15
+ 67 F16
+ 68 F17
+ 69 F18
+ 6A F19
+ 6B F20
+ 6C F21
+ 6D F22
+ 6E F23
+ 6F Keypad Enter*
+ 70 KANA
+ 71 nav*
+ 72 nav*
+ 73 RO
+ 74 nav*
+ 75 nav*
+ 76 F24
+ 77 nav*
+ 78 nav*
+ 79 HENKAN
+ 7A RCTL*
+ 7B MUHENKAN
+ 7C RALT*
+ 7D JPY
+ 7E Keypad ,
+ 7F Keypad / *
+
+*/
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