keyboard/hhkb/rn42/rn42_task.c

   1 #include <stdint.h>
   2 #include <string.h>
   3 #include <avr/pgmspace.h>
   4 #include <avr/eeprom.h>
   5 #include "keycode.h"
   6 #include "serial.h"
   7 #include "host.h"
   8 #include "action.h"
   9 #include "action_util.h"
  10 #include "lufa.h"
  11 #include "rn42_task.h"
  12 #include "print.h"
  13 #include "debug.h"
  14 #include "timer.h"
  15 #include "wait.h"
  16 #include "command.h"
  17 #include "battery.h"
  18
  19 static bool config_mode = false;
  20 static bool force_usb = false;
  21
  22 static void status_led(bool on)
  23 {
  24     if (on) {
  25         DDRE  |=  (1<<6);
  26         PORTE &= ~(1<<6);
  27     } else {
  28         DDRE  |=  (1<<6);
  29         PORTE |=  (1<<6);
  30     }
  31 }
  32
  33 void rn42_task_init(void)
  34 {
  35     battery_init();
  36 }
  37
  38 void rn42_task(void)
  39 {
  40     int16_t c;
  41     // Raw mode: interpret output report of LED state
  42     while ((c = rn42_getc()) != -1) {
  43         // LED Out report: 0xFE, 0x02, 0x01, <leds>
  44         // To get the report over UART set bit3 with SH, command.
  45         static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
  46         switch (state) {
  47             case LED_INIT:
  48                 if (c == 0xFE) state = LED_FE;
  49                 else {
  50                     if (0x0 <= c && c <= 0x7f) xprintf("%c", c);
  51                     else xprintf(" %02X", c);
  52                 }
  53                 break;
  54             case LED_FE:
  55                 if (c == 0x02) state = LED_02;
  56                 else           state = LED_INIT;
  57                 break;
  58             case LED_02:
  59                 if (c == 0x01) state = LED_01;
  60                 else           state = LED_INIT;
  61                 break;
  62             case LED_01:
  63                 dprintf("LED status: %02X\n", c);
  64                 rn42_set_leds(c);
  65                 state = LED_INIT;
  66                 break;
  67             default:
  68                 state = LED_INIT;
  69         }
  70     }
  71
  72     /* Bluetooth mode when ready */
  73     if (!config_mode && !force_usb) {
  74         if (!rn42_rts() && host_get_driver() != &rn42_driver) {
  75             clear_keyboard();
  76             host_set_driver(&rn42_driver);
  77         } else if (rn42_rts() && host_get_driver() != &lufa_driver) {
  78             clear_keyboard();
  79             host_set_driver(&lufa_driver);
  80         }
  81     }
  82
  83
  84     static uint16_t prev_timer = 0;
  85     uint16_t e = timer_elapsed(prev_timer);
  86     if (e > 1000) {
  87         /* every second */
  88         prev_timer += e/1000*1000;
  89
  90         /* Low voltage alert */
  91         uint8_t bs = battery_status();
  92         if (bs == LOW_VOLTAGE) {
  93             battery_led(LED_ON);
  94         } else {
  95             battery_led(LED_CHARGER);
  96         }
  97
  98         /* every minute */
  99         uint32_t t = timer_read32()/1000;
 100         if (t%60 == 0) {
 101             uint16_t v = battery_voltage();
 102             uint8_t h = t/3600;
 103             uint8_t m = t%3600/60;
 104             uint8_t s = t%60;
 105             dprintf("%02u:%02u:%02u\t%umV\n", h, m, s, v);
 106             /* TODO: xprintf doesn't work for this.
 107             xprintf("%02u:%02u:%02u\t%umV\n", (t/3600), (t%3600/60), (t%60), v);
 108             */
 109         }
 110     }
 111
 112
 113     /* Connection monitor */
 114     if (!rn42_rts() && rn42_linked()) {
 115         status_led(true);
 116     } else {
 117         status_led(false);
 118     }
 119 }
 120
 121
 122
 123 /******************************************************************************
 124  * Command
 125  ******************************************************************************/
 126 static host_driver_t *prev_driver = &rn42_driver;
 127
 128 static void print_rn42(void)
 129 {
 130     int16_t c;
 131     while ((c = rn42_getc()) != -1) {
 132         xprintf("%c", c);
 133     }
 134 }
 135
 136 static void clear_rn42(void)
 137 {
 138     while (rn42_getc() != -1) ;
 139 }
 140
 141 #define SEND_STR(str)       send_str(PSTR(str))
 142 #define SEND_COMMAND(cmd)   send_command(PSTR(cmd))
 143
 144 static void send_str(const char *str)
 145 {
 146     uint8_t c;
 147     while ((c = pgm_read_byte(str++)))
 148         rn42_putc(c);
 149 }
 150
 151 static const char *send_command(const char *cmd)
 152 {
 153     static const char *s;
 154     send_str(cmd);
 155     wait_ms(500);
 156     s = rn42_gets(100);
 157     xprintf("%s\r\n", s);
 158     print_rn42();
 159     return s;
 160 }
 161
 162 static void enter_command_mode(void)
 163 {
 164     prev_driver = host_get_driver();
 165     clear_keyboard();
 166     host_set_driver(&rn42_config_driver);   // null driver; not to send a key to host
 167     rn42_disconnect();
 168     while (rn42_linked()) ;
 169
 170     print("Entering config mode ...\n");
 171     wait_ms(1100);          // need 1 sec
 172     SEND_COMMAND("$$$");
 173     wait_ms(600);           // need 1 sec
 174     print_rn42();
 175     const char *s = SEND_COMMAND("v\r\n");
 176     if (strncmp("v", s, 1) != 0) SEND_COMMAND("+\r\n"); // local echo on
 177 }
 178
 179 static void exit_command_mode(void)
 180 {
 181     print("Exiting config mode ...\n");
 182     SEND_COMMAND("---\r\n");    // exit
 183
 184     rn42_autoconnect();
 185     clear_keyboard();
 186     host_set_driver(prev_driver);
 187 }
 188
 189 static void init_rn42(void)
 190 {
 191     // RN-42 configure
 192     if (!config_mode) enter_command_mode();
 193     SEND_COMMAND("SF,1\r\n");  // factory defaults
 194     SEND_COMMAND("S-,TmkBT\r\n");
 195     SEND_COMMAND("SS,Keyboard/Mouse\r\n");
 196     SEND_COMMAND("SM,4\r\n");  // auto connect(DTR)
 197     SEND_COMMAND("SW,8000\r\n");   // Sniff disable
 198     SEND_COMMAND("S~,6\r\n");   // HID profile
 199     SEND_COMMAND("SH,003C\r\n");   // combo device, out-report, 4-reconnect
 200     SEND_COMMAND("SY,FFF4\r\n");   // transmit power -12
 201     SEND_COMMAND("R,1\r\n");
 202     if (!config_mode) exit_command_mode();
 203 }
 204
 205 #if 0
 206 // Switching connections
 207 // NOTE: Remote Address doesn't work in the way manual says.
 208 // EEPROM address for link store
 209 #define RN42_LINK0  (uint8_t *)128
 210 #define RN42_LINK1  (uint8_t *)140
 211 #define RN42_LINK2  (uint8_t *)152
 212 #define RN42_LINK3  (uint8_t *)164
 213 static void store_link(uint8_t *eeaddr)
 214 {
 215     enter_command_mode();
 216     SEND_STR("GR\r\n"); // remote address
 217     const char *s = rn42_gets(500);
 218     if (strcmp("GR", s) == 0) s = rn42_gets(500);   // ignore local echo
 219     xprintf("%s(%d)\r\n", s, strlen(s));
 220     if (strlen(s) == 12) {
 221         for (int i = 0; i < 12; i++) {
 222             eeprom_write_byte(eeaddr+i, *(s+i));
 223             dprintf("%c ", *(s+i));
 224         }
 225         dprint("\r\n");
 226     }
 227     exit_command_mode();
 228 }
 229
 230 static void restore_link(const uint8_t *eeaddr)
 231 {
 232     enter_command_mode();
 233     SEND_COMMAND("SR,Z\r\n");   // remove remote address
 234     SEND_STR("SR,");            // set remote address from EEPROM
 235     for (int i = 0; i < 12; i++) {
 236         uint8_t c = eeprom_read_byte(eeaddr+i);
 237         rn42_putc(c);
 238         dprintf("%c ", c);
 239     }
 240     dprintf("\r\n");
 241     SEND_COMMAND("\r\n");
 242     SEND_COMMAND("R,1\r\n");    // reboot
 243     exit_command_mode();
 244 }
 245
 246 static const char *get_link(uint8_t * eeaddr)
 247 {
 248     static char s[13];
 249     for (int i = 0; i < 12; i++) {
 250         uint8_t c = eeprom_read_byte(eeaddr+i);
 251         s[i] = c;
 252     }
 253     s[12] = '\0';
 254     return s;
 255 }
 256 #endif
 257
 258 static void pairing(void)
 259 {
 260     enter_command_mode();
 261     SEND_COMMAND("SR,Z\r\n");   // remove remote address
 262     SEND_COMMAND("R,1\r\n");    // reboot
 263     exit_command_mode();
 264 }
 265
 266 bool command_extra(uint8_t code)
 267 {
 268     uint32_t t;
 269     uint16_t b;
 270     switch (code) {
 271         case KC_H:
 272         case KC_SLASH: /* ? */
 273             print("\n\n----- Bluetooth RN-42 Help -----\n");
 274             print("i:       RN-42 info\n");
 275             print("b:       battery voltage\n");
 276             print("Del:     enter/exit RN-42 config mode\n");
 277             print("Slck:    RN-42 initialize\n");
 278 #if 0
 279             print("1-4:     restore link\n");
 280             print("F1-F4:   store link\n");
 281 #endif
 282             print("p:       pairing\n");
 283
 284             if (config_mode) {
 285                 return true;
 286             } else {
 287                 print("u:       toggle Force USB mode\n");
 288                 return false;   // to display default command help
 289             }
 290         case KC_P:
 291             pairing();
 292             return true;
 293 #if 0
 294         /* Store link address to EEPROM */
 295         case KC_F1:
 296             store_link(RN42_LINK0);
 297             return true;
 298         case KC_F2:
 299             store_link(RN42_LINK1);
 300             return true;
 301         case KC_F3:
 302             store_link(RN42_LINK2);
 303             return true;
 304         case KC_F4:
 305             store_link(RN42_LINK3);
 306             return true;
 307         /* Restore link address to EEPROM */
 308         case KC_1:
 309             restore_link(RN42_LINK0);
 310             return true;
 311         case KC_2:
 312             restore_link(RN42_LINK1);
 313             return true;
 314         case KC_3:
 315             restore_link(RN42_LINK2);
 316             return true;
 317         case KC_4:
 318             restore_link(RN42_LINK3);
 319             return true;
 320 #endif
 321         case KC_I:
 322             print("\n----- RN-42 info -----\n");
 323             xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
 324             xprintf("force_usb: %X\n", force_usb);
 325             xprintf("rn42: %s\n", rn42_rts() ? "OFF" : (rn42_linked() ? "CONN" : "ON"));
 326             xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
 327             xprintf("config_mode: %X\n", config_mode);
 328             xprintf("USB State: %s\n",
 329                     (USB_DeviceState == DEVICE_STATE_Unattached) ? "Unattached" :
 330                     (USB_DeviceState == DEVICE_STATE_Powered) ? "Powered" :
 331                     (USB_DeviceState == DEVICE_STATE_Default) ? "Default" :
 332                     (USB_DeviceState == DEVICE_STATE_Addressed) ? "Addressed" :
 333                     (USB_DeviceState == DEVICE_STATE_Configured) ? "Configured" :
 334                     (USB_DeviceState == DEVICE_STATE_Suspended) ? "Suspended" : "?");
 335             xprintf("battery: ");
 336             switch (battery_status()) {
 337                 case FULL_CHARGED:  xprintf("FULL"); break;
 338                 case CHARGING:      xprintf("CHARG"); break;
 339                 case DISCHARGING:   xprintf("DISCHG"); break;
 340                 case LOW_VOLTAGE:   xprintf("LOW"); break;
 341                 default:            xprintf("?"); break;
 342             };
 343             xprintf("\n");
 344             xprintf("RemoteWakeupEnabled: %X\n", USB_Device_RemoteWakeupEnabled);
 345             xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
 346             t = timer_read32()/1000;
 347             uint8_t d = t/3600/24;
 348             uint8_t h = t/3600;
 349             uint8_t m = t%3600/60;
 350             uint8_t s = t%60;
 351             xprintf("uptime: %02u %02u:%02u:%02u\n", d, h, m, s);
 352 #if 0
 353             xprintf("LINK0: %s\r\n", get_link(RN42_LINK0));
 354             xprintf("LINK1: %s\r\n", get_link(RN42_LINK1));
 355             xprintf("LINK2: %s\r\n", get_link(RN42_LINK2));
 356             xprintf("LINK3: %s\r\n", get_link(RN42_LINK3));
 357 #endif
 358             return true;
 359         case KC_B:
 360             // battery monitor
 361             t = timer_read32()/1000;
 362             b = battery_voltage();
 363             xprintf("BAT: %umV\t", b);
 364             xprintf("%02u:",   t/3600);
 365             xprintf("%02u:",   t%3600/60);
 366             xprintf("%02u\n",  t%60);
 367             return true;
 368         case KC_U:
 369             if (config_mode) return false;
 370             if (force_usb) {
 371                 print("Auto mode\n");
 372                 force_usb = false;
 373             } else {
 374                 print("USB mode\n");
 375                 force_usb = true;
 376                 clear_keyboard();
 377                 host_set_driver(&lufa_driver);
 378             }
 379             return true;
 380         case KC_DELETE:
 381             /* RN-42 Command mode */
 382             if (rn42_autoconnecting()) {
 383                 enter_command_mode();
 384
 385                 command_state = CONSOLE;
 386                 config_mode = true;
 387             } else {
 388                 exit_command_mode();
 389
 390                 command_state = ONESHOT;
 391                 config_mode = false;
 392             }
 393             return true;
 394         case KC_SCROLLLOCK:
 395             init_rn42();
 396             return true;
 397         default:
 398             if (config_mode)
 399                 return true;
 400             else
 401                 return false;   // yield to default command
 402     }
 403     return true;
 404 }
 405
 406 /*
 407  * RN-42 Command mode
 408  * sends charactors to the module
 409  */
 410 static uint8_t code2asc(uint8_t code);
 411 bool command_console_extra(uint8_t code)
 412 {
 413     rn42_putc(code2asc(code));
 414     return true;
 415 }
 416
 417 // convert keycode into ascii charactor
 418 static uint8_t code2asc(uint8_t code)
 419 {
 420     bool shifted = (get_mods() & (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))) ? true : false;
 421     switch (code) {
 422         case KC_A: return (shifted ? 'A' : 'a');
 423         case KC_B: return (shifted ? 'B' : 'b');
 424         case KC_C: return (shifted ? 'C' : 'c');
 425         case KC_D: return (shifted ? 'D' : 'd');
 426         case KC_E: return (shifted ? 'E' : 'e');
 427         case KC_F: return (shifted ? 'F' : 'f');
 428         case KC_G: return (shifted ? 'G' : 'g');
 429         case KC_H: return (shifted ? 'H' : 'h');
 430         case KC_I: return (shifted ? 'I' : 'i');
 431         case KC_J: return (shifted ? 'J' : 'j');
 432         case KC_K: return (shifted ? 'K' : 'k');
 433         case KC_L: return (shifted ? 'L' : 'l');
 434         case KC_M: return (shifted ? 'M' : 'm');
 435         case KC_N: return (shifted ? 'N' : 'n');
 436         case KC_O: return (shifted ? 'O' : 'o');
 437         case KC_P: return (shifted ? 'P' : 'p');
 438         case KC_Q: return (shifted ? 'Q' : 'q');
 439         case KC_R: return (shifted ? 'R' : 'r');
 440         case KC_S: return (shifted ? 'S' : 's');
 441         case KC_T: return (shifted ? 'T' : 't');
 442         case KC_U: return (shifted ? 'U' : 'u');
 443         case KC_V: return (shifted ? 'V' : 'v');
 444         case KC_W: return (shifted ? 'W' : 'w');
 445         case KC_X: return (shifted ? 'X' : 'x');
 446         case KC_Y: return (shifted ? 'Y' : 'y');
 447         case KC_Z: return (shifted ? 'Z' : 'z');
 448         case KC_1: return (shifted ? '!' : '1');
 449         case KC_2: return (shifted ? '@' : '2');
 450         case KC_3: return (shifted ? '#' : '3');
 451         case KC_4: return (shifted ? '$' : '4');
 452         case KC_5: return (shifted ? '%' : '5');
 453         case KC_6: return (shifted ? '^' : '6');
 454         case KC_7: return (shifted ? '&' : '7');
 455         case KC_8: return (shifted ? '*' : '8');
 456         case KC_9: return (shifted ? '(' : '9');
 457         case KC_0: return (shifted ? ')' : '0');
 458         case KC_ENTER: return '\n';
 459         case KC_ESCAPE: return 0x1B;
 460         case KC_BSPACE: return '\b';
 461         case KC_TAB: return '\t';
 462         case KC_SPACE: return ' ';
 463         case KC_MINUS: return (shifted ? '_' : '-');
 464         case KC_EQUAL: return (shifted ? '+' : '=');
 465         case KC_LBRACKET: return (shifted ? '{' : '[');
 466         case KC_RBRACKET: return (shifted ? '}' : ']');
 467         case KC_BSLASH: return (shifted ? '|' : '\\');
 468         case KC_NONUS_HASH: return (shifted ? '|' : '\\');
 469         case KC_SCOLON: return (shifted ? ':' : ';');
 470         case KC_QUOTE: return (shifted ? '"' : '\'');
 471         case KC_GRAVE: return (shifted ? '~' : '`');
 472         case KC_COMMA: return (shifted ? '<' : ',');
 473         case KC_DOT: return (shifted ? '>' : '.');
 474         case KC_SLASH: return (shifted ? '?' : '/');
 475         case KC_DELETE: return '\0';    // Delete to disconnect
 476         default: return ' ';
 477     }
 478 }