keyboard/hhkb_rn42/rn42/rn42_task.c

   1 #include <stdint.h>
   2 #include "keycode.h"
   3 #include "serial.h"
   4 #include "host.h"
   5 #include "action.h"
   6 #include "action_util.h"
   7 #include "lufa.h"
   8 #include "rn42_task.h"
   9 #include "print.h"
  10 #include "timer.h"
  11 #include "command.h"
  12
  13 static bool config_mode = false;
  14 static bool force_usb = false;
  15
  16 static void status_led(bool on)
  17 {
  18     if (on) {
  19         DDRE  |=  (1<<6);
  20         PORTE &= ~(1<<6);
  21     } else {
  22         DDRE  |=  (1<<6);
  23         PORTE |=  (1<<6);
  24     }
  25 }
  26
  27 static void battery_adc_init(void)
  28 {
  29     ADMUX = (1<<REFS1) | (1<<REFS0);                // Ref:2.56V band-gap, Input:ADC0(PF0)
  30     ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);  // Prescale:128 16MHz/128=125KHz
  31     ADCSRA |= (1<<ADEN);                            // enable ADC
  32 }
  33
  34 static uint16_t battery_adc(void)
  35 {
  36     volatile uint16_t bat;
  37     ADCSRA |= (1<<ADEN);
  38
  39     // discard first result
  40     ADCSRA |= (1<<ADSC);
  41     while (ADCSRA & (1<<ADSC)) ;
  42     bat = ADC;
  43
  44     // discard second result
  45     ADCSRA |= (1<<ADSC);
  46     while (ADCSRA & (1<<ADSC)) ;
  47     bat = ADC;
  48
  49     ADCSRA |= (1<<ADSC);
  50     while (ADCSRA & (1<<ADSC)) ;
  51     bat = ADC;
  52
  53     ADCSRA &= ~(1<<ADEN);
  54     return bat;
  55 }
  56
  57 static void battery_led(bool on)
  58 {
  59     if (on) {
  60         DDRF  |=  (1<<5);
  61         PORTF &= ~(1<<5);
  62     } else {
  63         DDRF  &= ~(1<<5);
  64         PORTF |=  (1<<5);
  65     }
  66 }
  67
  68 static bool battery_charging(void)
  69 {
  70     // MCP73831:STAT
  71     //   Hi-Z:   Shutdown/No Battery
  72     //   Low:    Charging
  73     //   Hi:     Charged
  74     DDRF  &= ~(1<<5);
  75     PORTF |=  (1<<5);
  76     return PINF&(1<<5) ? false : true;
  77 }
  78
  79 void rn42_task_init(void)
  80 {
  81     battery_adc_init();
  82
  83     // battery charging(input with pull-up)
  84     DDRF  &= ~(1<<5);
  85     PORTF |=  (1<<5);
  86 }
  87
  88 void rn42_task(void)
  89 {
  90     int16_t c;
  91     if (config_mode) {
  92         // Config mode: print output from RN-42
  93         while ((c = serial_recv2()) != -1) {
  94             // without flow control it'll fail to receive data when flooded
  95             xprintf("%c", c);
  96         }
  97     } else {
  98         // Raw mode: interpret output report of LED state
  99         while ((c = serial_recv2()) != -1) {
 100             // LED Out report: 0xFE, 0x02, 0x01, <leds>
 101             // To get the report over UART set bit3 with SH, command.
 102             static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
 103             xprintf("%02X\n", c);
 104             switch (state) {
 105                 case LED_INIT:
 106                     if (c == 0xFE) state = LED_FE;
 107                     else           state = LED_INIT;
 108                     break;
 109                 case LED_FE:
 110                     if (c == 0x02) state = LED_02;
 111                     else           state = LED_INIT;
 112                     break;
 113                 case LED_02:
 114                     if (c == 0x01) state = LED_01;
 115                     else           state = LED_INIT;
 116                     break;
 117                 case LED_01:
 118                     // TODO: move to rn42.c and make accessible with keyboard_leds()
 119                     xprintf("LED status: %02X\n", c);
 120                     state = LED_INIT;
 121                     break;
 122                 default:
 123                     state = LED_INIT;
 124             }
 125         }
 126     }
 127
 128     /* Bluetooth mode when ready */
 129     if (!config_mode && !force_usb) {
 130         if (!rn42_rts() && host_get_driver() != &rn42_driver) {
 131             clear_keyboard();
 132             host_set_driver(&rn42_driver);
 133         } else if (rn42_rts() && host_get_driver() != &lufa_driver) {
 134             clear_keyboard();
 135             host_set_driver(&lufa_driver);
 136         }
 137     }
 138 }
 139
 140
 141
 142 /******************************************************************************
 143  * Command
 144  ******************************************************************************/
 145 bool command_extra(uint8_t code)
 146 {
 147     uint32_t t;
 148     uint16_t b;
 149     static host_driver_t *prev_driver = &rn42_driver;
 150     switch (code) {
 151         case KC_H:
 152         case KC_SLASH: /* ? */
 153             print("\n\n----- Bluetooth RN-42 Help -----\n");
 154             print("Del: enter/exit config mode(auto_connect/disconnect)\n");
 155             print("i:   RN-42 info\n");
 156             print("b:   battery voltage\n");
 157
 158             if (config_mode) {
 159                 return true;
 160             } else {
 161                 print("u:   Force USB mode\n");
 162                 return false;   // to display default command help
 163             }
 164         case KC_DELETE:
 165             if (rn42_autoconnecting()) {
 166                 prev_driver = host_get_driver();
 167                 clear_keyboard();
 168                 _delay_ms(500);
 169                 host_set_driver(&rn42_config_driver);   // null driver; not to send a key to host
 170                 rn42_disconnect();
 171                 print("\nRN-42: disconnect\n");
 172                 print("Enter config mode\n");
 173                 print("type $$$ to start and + for local echo\n");
 174                 command_state = CONSOLE;
 175                 config_mode = true;
 176             } else {
 177                 rn42_autoconnect();
 178                 print("\nRN-42: auto_connect\n");
 179                 print("Exit config mode\n");
 180                 command_state = ONESHOT;
 181                 config_mode = false;
 182                 //clear_keyboard();
 183                 host_set_driver(prev_driver);
 184             }
 185             return true;
 186         case KC_U:
 187             if (config_mode) return false;
 188             if (force_usb) {
 189                 print("Auto mode\n");
 190                 force_usb = false;
 191             } else {
 192                 print("USB mode\n");
 193                 force_usb = true;
 194                 clear_keyboard();
 195                 host_set_driver(&lufa_driver);
 196             }
 197             return true;
 198         case KC_I:
 199             print("\n----- RN-42 info -----\n");
 200             xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
 201             xprintf("force_usb: %X\n", force_usb);
 202             xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
 203             xprintf("rn42_linked(): %X\n", rn42_linked());
 204             xprintf("rn42_rts(): %X\n", rn42_rts());
 205             xprintf("config_mode: %X\n", config_mode);
 206             xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
 207             xprintf("battery_charging: %X\n", battery_charging());
 208             return true;
 209         case KC_B:
 210             // battery monitor
 211             t = timer_read32()/1000;
 212             b = battery_adc();
 213             xprintf("BAT: %umV(%04X)\t",  (b-16)*5, b);
 214             xprintf("%02u:",   t/3600);
 215             xprintf("%02u:",   t%3600/60);
 216             xprintf("%02u\n",  t%60);
 217             return true;
 218         default:
 219             if (config_mode)
 220                 return true;
 221             else
 222                 return false;   // exec default command
 223     }
 224     return true;
 225 }
 226
 227 static uint8_t code2asc(uint8_t code);
 228 bool command_console_extra(uint8_t code)
 229 {
 230     switch (code) {
 231         default:
 232             rn42_putc(code2asc(code));
 233             return true;
 234     }
 235     return false;
 236 }
 237
 238 // convert keycode into ascii charactor
 239 static uint8_t code2asc(uint8_t code)
 240 {
 241     bool shifted = (get_mods() & (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))) ? true : false;
 242     switch (code) {
 243         case KC_A: return (shifted ? 'A' : 'a');
 244         case KC_B: return (shifted ? 'B' : 'b');
 245         case KC_C: return (shifted ? 'C' : 'c');
 246         case KC_D: return (shifted ? 'D' : 'd');
 247         case KC_E: return (shifted ? 'E' : 'e');
 248         case KC_F: return (shifted ? 'F' : 'f');
 249         case KC_G: return (shifted ? 'G' : 'g');
 250         case KC_H: return (shifted ? 'H' : 'h');
 251         case KC_I: return (shifted ? 'I' : 'i');
 252         case KC_J: return (shifted ? 'J' : 'j');
 253         case KC_K: return (shifted ? 'K' : 'k');
 254         case KC_L: return (shifted ? 'L' : 'l');
 255         case KC_M: return (shifted ? 'M' : 'm');
 256         case KC_N: return (shifted ? 'N' : 'n');
 257         case KC_O: return (shifted ? 'O' : 'o');
 258         case KC_P: return (shifted ? 'P' : 'p');
 259         case KC_Q: return (shifted ? 'Q' : 'q');
 260         case KC_R: return (shifted ? 'R' : 'r');
 261         case KC_S: return (shifted ? 'S' : 's');
 262         case KC_T: return (shifted ? 'T' : 't');
 263         case KC_U: return (shifted ? 'U' : 'u');
 264         case KC_V: return (shifted ? 'V' : 'v');
 265         case KC_W: return (shifted ? 'W' : 'w');
 266         case KC_X: return (shifted ? 'X' : 'x');
 267         case KC_Y: return (shifted ? 'Y' : 'y');
 268         case KC_Z: return (shifted ? 'Z' : 'z');
 269         case KC_1: return (shifted ? '!' : '1');
 270         case KC_2: return (shifted ? '@' : '2');
 271         case KC_3: return (shifted ? '#' : '3');
 272         case KC_4: return (shifted ? '$' : '4');
 273         case KC_5: return (shifted ? '%' : '5');
 274         case KC_6: return (shifted ? '^' : '6');
 275         case KC_7: return (shifted ? '&' : '7');
 276         case KC_8: return (shifted ? '*' : '8');
 277         case KC_9: return (shifted ? '(' : '9');
 278         case KC_0: return (shifted ? ')' : '0');
 279         case KC_ENTER: return '\n';
 280         case KC_ESCAPE: return 0x1B;
 281         case KC_BSPACE: return '\b';
 282         case KC_TAB: return '\t';
 283         case KC_SPACE: return ' ';
 284         case KC_MINUS: return (shifted ? '_' : '-');
 285         case KC_EQUAL: return (shifted ? '+' : '=');
 286         case KC_LBRACKET: return (shifted ? '{' : '[');
 287         case KC_RBRACKET: return (shifted ? '}' : ']');
 288         case KC_BSLASH: return (shifted ? '|' : '\\');
 289         case KC_NONUS_HASH: return (shifted ? '|' : '\\');
 290         case KC_SCOLON: return (shifted ? ':' : ';');
 291         case KC_QUOTE: return (shifted ? '"' : '\'');
 292         case KC_GRAVE: return (shifted ? '~' : '`');
 293         case KC_COMMA: return (shifted ? '<' : ',');
 294         case KC_DOT: return (shifted ? '>' : '.');
 295         case KC_SLASH: return (shifted ? '?' : '/');
 296         case KC_DELETE: return '\0';    // Delete to disconnect
 297         default: return ' ';
 298     }
 299 }