converter/usb_usb/usb_usb.cpp

   1 /*
   2 Copyright 2016 Jun Wako <wakojun@gmail.com>
   3
   4 This program is free software: you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation, either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 #include <stdint.h>
  19 #include <stdbool.h>
  20
  21 // USB HID host
  22 #include "Usb.h"
  23 #include "usbhub.h"
  24 #include "hid.h"
  25 #include "hidboot.h"
  26 #include "parser.h"
  27
  28 #include "keycode.h"
  29 #include "util.h"
  30 #include "print.h"
  31 #include "debug.h"
  32 #include "timer.h"
  33 #include "matrix.h"
  34 #include "led.h"
  35
  36
  37 /* KEY CODE to Matrix
  38  *
  39  * HID keycode(1 byte):
  40  * Higher 5 bits indicates ROW and lower 3 bits COL.
  41  *
  42  *  7 6 5 4 3 2 1 0
  43  * +---------------+
  44  * |  ROW  |  COL  |
  45  * +---------------+
  46  *
  47  * Matrix space(16 * 16):
  48  *   r\c0123456789ABCDEF
  49  *   0 +----------------+
  50  *   : |                |
  51  *   : |                |
  52  *  16 +----------------+
  53  */
  54 #define ROW_MASK 0xF0
  55 #define COL_MASK 0x0F
  56 #define CODE(row, col)  (((row) << 4) | (col))
  57 #define ROW(code)       (((code) & ROW_MASK) >> 4)
  58 #define COL(code)       ((code) & COL_MASK)
  59 #define ROW_BITS(code)  (1 << COL(code))
  60
  61
  62 // Integrated key state of all keyboards
  63 static report_keyboard_t keyboard_report;
  64
  65 static bool matrix_is_mod =false;
  66
  67 /*
  68  * USB Host Shield HID keyboards
  69  * This supports two cascaded hubs and four keyboards
  70  */
  71 USB usb_host;
  72 USBHub hub1(&usb_host);
  73 USBHub hub2(&usb_host);
  74 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd1(&usb_host);
  75 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd2(&usb_host);
  76 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd3(&usb_host);
  77 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd4(&usb_host);
  78 KBDReportParser kbd_parser1;
  79 KBDReportParser kbd_parser2;
  80 KBDReportParser kbd_parser3;
  81 KBDReportParser kbd_parser4;
  82
  83
  84 uint8_t matrix_rows(void) { return MATRIX_ROWS; }
  85 uint8_t matrix_cols(void) { return MATRIX_COLS; }
  86 bool matrix_has_ghost(void) { return false; }
  87 void matrix_init(void) {
  88     // USB Host Shield setup
  89     usb_host.Init();
  90     kbd1.SetReportParser(0, (HIDReportParser*)&kbd_parser1);
  91     kbd2.SetReportParser(0, (HIDReportParser*)&kbd_parser2);
  92     kbd3.SetReportParser(0, (HIDReportParser*)&kbd_parser3);
  93     kbd4.SetReportParser(0, (HIDReportParser*)&kbd_parser4);
  94 }
  95
  96 static void or_report(report_keyboard_t report) {
  97     // integrate reports into keyboard_report
  98     keyboard_report.mods |= report.mods;
  99     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 100         if (IS_ANY(report.keys[i])) {
 101             for (uint8_t j = 0; j < KEYBOARD_REPORT_KEYS; j++) {
 102                 if (! keyboard_report.keys[j]) {
 103                     keyboard_report.keys[j] = report.keys[i];
 104                     break;
 105                 }
 106             }
 107         }
 108     }
 109 }
 110
 111 uint8_t matrix_scan(void) {
 112     static uint16_t last_time_stamp1 = 0;
 113     static uint16_t last_time_stamp2 = 0;
 114     static uint16_t last_time_stamp3 = 0;
 115     static uint16_t last_time_stamp4 = 0;
 116
 117     // check report came from keyboards
 118     if (kbd_parser1.time_stamp != last_time_stamp1 ||
 119         kbd_parser2.time_stamp != last_time_stamp2 ||
 120         kbd_parser3.time_stamp != last_time_stamp3 ||
 121         kbd_parser4.time_stamp != last_time_stamp4) {
 122
 123         last_time_stamp1 = kbd_parser1.time_stamp;
 124         last_time_stamp2 = kbd_parser2.time_stamp;
 125         last_time_stamp3 = kbd_parser3.time_stamp;
 126         last_time_stamp4 = kbd_parser4.time_stamp;
 127
 128         // clear and integrate all reports
 129         keyboard_report = {};
 130         or_report(kbd_parser1.report);
 131         or_report(kbd_parser2.report);
 132         or_report(kbd_parser3.report);
 133         or_report(kbd_parser4.report);
 134
 135         matrix_is_mod = true;
 136
 137         dprintf("state:  %02X %02X", keyboard_report.mods, keyboard_report.reserved);
 138         for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 139             dprintf(" %02X", keyboard_report.keys[i]);
 140         }
 141         dprint("\r\n");
 142     } else {
 143         matrix_is_mod = false;
 144     }
 145
 146     uint16_t timer;
 147     timer = timer_read();
 148     usb_host.Task();
 149     timer = timer_elapsed(timer);
 150     if (timer > 100) {
 151         dprintf("host.Task: %d\n", timer);
 152     }
 153
 154     return 1;
 155 }
 156
 157 bool matrix_is_modified(void) {
 158     return matrix_is_mod;
 159 }
 160
 161 bool matrix_is_on(uint8_t row, uint8_t col) {
 162     uint8_t code = CODE(row, col);
 163
 164     if (IS_MOD(code)) {
 165         if (keyboard_report.mods & ROW_BITS(code)) {
 166             return true;
 167         }
 168     }
 169     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 170         if (keyboard_report.keys[i] == code) {
 171             return true;
 172         }
 173     }
 174     return false;
 175 }
 176
 177 matrix_row_t matrix_get_row(uint8_t row) {
 178     uint16_t row_bits = 0;
 179
 180     if (IS_MOD(CODE(row, 0)) && keyboard_report.mods) {
 181         row_bits |= keyboard_report.mods;
 182     }
 183
 184     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 185         if (IS_ANY(keyboard_report.keys[i])) {
 186             if (row == ROW(keyboard_report.keys[i])) {
 187                 row_bits |= ROW_BITS(keyboard_report.keys[i]);
 188             }
 189         }
 190     }
 191     return row_bits;
 192 }
 193
 194 uint8_t matrix_key_count(void) {
 195     uint8_t count = 0;
 196
 197     count += bitpop(keyboard_report.mods);
 198     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 199         if (IS_ANY(keyboard_report.keys[i])) {
 200             count++;
 201         }
 202     }
 203     return count;
 204 }
 205
 206 void matrix_print(void) {
 207     print("\nr/c 0123456789ABCDEF\n");
 208     for (uint8_t row = 0; row < matrix_rows(); row++) {
 209         xprintf("%02d: ", row);
 210         print_bin_reverse16(matrix_get_row(row));
 211         print("\n");
 212     }
 213 }
 214
 215 void led_set(uint8_t usb_led)
 216 {
 217     kbd1.SetReport(0, 0, 2, 0, 1, &usb_led);
 218     kbd2.SetReport(0, 0, 2, 0, 1, &usb_led);
 219     kbd3.SetReport(0, 0, 2, 0, 1, &usb_led);
 220     kbd4.SetReport(0, 0, 2, 0, 1, &usb_led);
 221 }