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 #include "host.h"
  36 #include "keyboard.h"
  37
  38
  39 /* KEY CODE to Matrix
  40  *
  41  * HID keycode(1 byte):
  42  * Higher 5 bits indicates ROW and lower 3 bits COL.
  43  *
  44  *  7 6 5 4 3 2 1 0
  45  * +---------------+
  46  * |  ROW  |  COL  |
  47  * +---------------+
  48  *
  49  * Matrix space(16 * 16):
  50  *   r\c0123456789ABCDEF
  51  *   0 +----------------+
  52  *   : |                |
  53  *   : |                |
  54  *  16 +----------------+
  55  */
  56 #define ROW_MASK 0xF0
  57 #define COL_MASK 0x0F
  58 #define CODE(row, col)  (((row) << 4) | (col))
  59 #define ROW(code)       (((code) & ROW_MASK) >> 4)
  60 #define COL(code)       ((code) & COL_MASK)
  61 #define ROW_BITS(code)  (1 << COL(code))
  62
  63
  64 // Integrated key state of all keyboards
  65 static report_keyboard_t keyboard_report;
  66
  67 static bool matrix_is_mod =false;
  68
  69 /*
  70  * USB Host Shield HID keyboards
  71  * This supports two cascaded hubs and four keyboards
  72  */
  73 USB usb_host;
  74 USBHub hub1(&usb_host);
  75 USBHub hub2(&usb_host);
  76 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd1(&usb_host);
  77 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd2(&usb_host);
  78 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd3(&usb_host);
  79 HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd4(&usb_host);
  80 KBDReportParser kbd_parser1;
  81 KBDReportParser kbd_parser2;
  82 KBDReportParser kbd_parser3;
  83 KBDReportParser kbd_parser4;
  84
  85
  86 uint8_t matrix_rows(void) { return MATRIX_ROWS; }
  87 uint8_t matrix_cols(void) { return MATRIX_COLS; }
  88 bool matrix_has_ghost(void) { return false; }
  89 void matrix_init(void) {
  90     // USB Host Shield setup
  91     usb_host.Init();
  92     kbd1.SetReportParser(0, (HIDReportParser*)&kbd_parser1);
  93     kbd2.SetReportParser(0, (HIDReportParser*)&kbd_parser2);
  94     kbd3.SetReportParser(0, (HIDReportParser*)&kbd_parser3);
  95     kbd4.SetReportParser(0, (HIDReportParser*)&kbd_parser4);
  96 }
  97
  98 static void or_report(report_keyboard_t report) {
  99     // integrate reports into keyboard_report
 100     keyboard_report.mods |= report.mods;
 101     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 102         if (IS_ANY(report.keys[i])) {
 103             for (uint8_t j = 0; j < KEYBOARD_REPORT_KEYS; j++) {
 104                 if (! keyboard_report.keys[j]) {
 105                     keyboard_report.keys[j] = report.keys[i];
 106                     break;
 107                 }
 108             }
 109         }
 110     }
 111 }
 112
 113 uint8_t matrix_scan(void) {
 114     static uint16_t last_time_stamp1 = 0;
 115     static uint16_t last_time_stamp2 = 0;
 116     static uint16_t last_time_stamp3 = 0;
 117     static uint16_t last_time_stamp4 = 0;
 118
 119     // check report came from keyboards
 120     if (kbd_parser1.time_stamp != last_time_stamp1 ||
 121         kbd_parser2.time_stamp != last_time_stamp2 ||
 122         kbd_parser3.time_stamp != last_time_stamp3 ||
 123         kbd_parser4.time_stamp != last_time_stamp4) {
 124
 125         last_time_stamp1 = kbd_parser1.time_stamp;
 126         last_time_stamp2 = kbd_parser2.time_stamp;
 127         last_time_stamp3 = kbd_parser3.time_stamp;
 128         last_time_stamp4 = kbd_parser4.time_stamp;
 129
 130         // clear and integrate all reports
 131         keyboard_report = {};
 132         or_report(kbd_parser1.report);
 133         or_report(kbd_parser2.report);
 134         or_report(kbd_parser3.report);
 135         or_report(kbd_parser4.report);
 136
 137         matrix_is_mod = true;
 138
 139         dprintf("state:  %02X %02X", keyboard_report.mods, keyboard_report.reserved);
 140         for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 141             dprintf(" %02X", keyboard_report.keys[i]);
 142         }
 143         dprint("\r\n");
 144     } else {
 145         matrix_is_mod = false;
 146     }
 147
 148     uint16_t timer;
 149     timer = timer_read();
 150     usb_host.Task();
 151     timer = timer_elapsed(timer);
 152     if (timer > 100) {
 153         dprintf("host.Task: %d\n", timer);
 154     }
 155
 156     static uint8_t usb_state = 0;
 157     if (usb_state != usb_host.getUsbTaskState()) {
 158         usb_state = usb_host.getUsbTaskState();
 159         dprintf("usb_state: %02X\n", usb_state);
 160
 161         // restore LED state when keyboard comes up
 162         if (usb_state == USB_STATE_RUNNING) {
 163             keyboard_set_leds(host_keyboard_leds());
 164         }
 165     }
 166     return 1;
 167 }
 168
 169 bool matrix_is_modified(void) {
 170     return matrix_is_mod;
 171 }
 172
 173 bool matrix_is_on(uint8_t row, uint8_t col) {
 174     uint8_t code = CODE(row, col);
 175
 176     if (IS_MOD(code)) {
 177         if (keyboard_report.mods & ROW_BITS(code)) {
 178             return true;
 179         }
 180     }
 181     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 182         if (keyboard_report.keys[i] == code) {
 183             return true;
 184         }
 185     }
 186     return false;
 187 }
 188
 189 matrix_row_t matrix_get_row(uint8_t row) {
 190     uint16_t row_bits = 0;
 191
 192     if (IS_MOD(CODE(row, 0)) && keyboard_report.mods) {
 193         row_bits |= keyboard_report.mods;
 194     }
 195
 196     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 197         if (IS_ANY(keyboard_report.keys[i])) {
 198             if (row == ROW(keyboard_report.keys[i])) {
 199                 row_bits |= ROW_BITS(keyboard_report.keys[i]);
 200             }
 201         }
 202     }
 203     return row_bits;
 204 }
 205
 206 uint8_t matrix_key_count(void) {
 207     uint8_t count = 0;
 208
 209     count += bitpop(keyboard_report.mods);
 210     for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
 211         if (IS_ANY(keyboard_report.keys[i])) {
 212             count++;
 213         }
 214     }
 215     return count;
 216 }
 217
 218 void matrix_print(void) {
 219     print("\nr/c 0123456789ABCDEF\n");
 220     for (uint8_t row = 0; row < matrix_rows(); row++) {
 221         xprintf("%02d: ", row);
 222         print_bin_reverse16(matrix_get_row(row));
 223         print("\n");
 224     }
 225 }
 226
 227 void led_set(uint8_t usb_led)
 228 {
 229     kbd1.SetReport(0, 0, 2, 0, 1, &usb_led);
 230     kbd2.SetReport(0, 0, 2, 0, 1, &usb_led);
 231     kbd3.SetReport(0, 0, 2, 0, 1, &usb_led);
 232     kbd4.SetReport(0, 0, 2, 0, 1, &usb_led);
 233 }