keyboard/hhkb_rn42/rn42.c

   1 #include "host.h"
   2 #include "host_driver.h"
   3 #include "serial.h"
   4 #include "rn42.h"
   5 #include "print.h"
   6 #include "wait.h"
   7
   8
   9 /* Host driver */
  10 static uint8_t keyboard_leds(void);
  11 static void send_keyboard(report_keyboard_t *report);
  12 static void send_mouse(report_mouse_t *report);
  13 static void send_system(uint16_t data);
  14 static void send_consumer(uint16_t data);
  15
  16 host_driver_t rn42_driver = {
  17     keyboard_leds,
  18     send_keyboard,
  19     send_mouse,
  20     send_system,
  21     send_consumer
  22 };
  23
  24
  25 void rn42_init(void)
  26 {
  27     // PF7: BT connection control(HiZ: connect, low: disconnect)
  28     // JTAG disable for PORT F. write JTD bit twice within four cycles.
  29     MCUCR |= (1<<JTD);
  30     MCUCR |= (1<<JTD);
  31     rn42_autoconnect();
  32
  33     // PF1: RTS(low: allowed to send, high: not allowed)
  34     DDRF &= ~(1<<1);
  35     PORTF &= ~(1<<1);
  36
  37     // PD5: CTS(low: allow to send, high:not allow)
  38     DDRD |= (1<<5);
  39     PORTD &= ~(1<<5);
  40
  41     serial_init();
  42 }
  43
  44 void rn42_putc(uint8_t c)
  45 {
  46     serial_send(c);
  47 }
  48
  49 bool rn42_autoconnecting(void)
  50 {
  51     // GPIO6 for control connection(high: auto connect, low: disconnect)
  52     // Note that this needs config: SM,4(Auto-Connect DTR Mode)
  53     return (PORTF & (1<<7) ? true : false);
  54 }
  55
  56 void rn42_autoconnect(void)
  57 {
  58     // hi to auto connect
  59     DDRF |= (1<<7);
  60     PORTF |= (1<<7);
  61 }
  62
  63 void rn42_disconnect(void)
  64 {
  65     // low to disconnect
  66     DDRF |= (1<<7);
  67     PORTF &= ~(1<<7);
  68 }
  69
  70 bool rn42_rts(void)
  71 {
  72     // low when RN-42 is powered and ready to receive
  73     return PINF&(1<<1);
  74 }
  75
  76 void rn42_cts_hi(void)
  77 {
  78     // not allow to send
  79     PORTD |= (1<<5);
  80 }
  81
  82 void rn42_cts_lo(void)
  83 {
  84     // allow to send
  85     PORTD &= ~(1<<5);
  86 }
  87
  88
  89 static uint8_t keyboard_leds(void) { return 0; }
  90
  91 static void send_keyboard(report_keyboard_t *report)
  92 {
  93     // wake from deep sleep
  94 /*
  95     PORTD |= (1<<5);    // high
  96     wait_ms(5);
  97     PORTD &= ~(1<<5);   // low
  98 */
  99
 100     serial_send(0xFD);  // Raw report mode
 101     serial_send(9);     // length
 102     serial_send(1);     // descriptor type
 103     serial_send(report->mods);
 104     serial_send(0x00);
 105     serial_send(report->keys[0]);
 106     serial_send(report->keys[1]);
 107     serial_send(report->keys[2]);
 108     serial_send(report->keys[3]);
 109     serial_send(report->keys[4]);
 110     serial_send(report->keys[5]);
 111 }
 112
 113 static void send_mouse(report_mouse_t *report)
 114 {
 115     // wake from deep sleep
 116 /*
 117     PORTD |= (1<<5);    // high
 118     wait_ms(5);
 119     PORTD &= ~(1<<5);   // low
 120 */
 121
 122     serial_send(0xFD);  // Raw report mode
 123     serial_send(5);     // length
 124     serial_send(2);     // descriptor type
 125     serial_send(report->buttons);
 126     serial_send(report->x);
 127     serial_send(report->y);
 128     serial_send(report->v);
 129 }
 130
 131 static void send_system(uint16_t data)
 132 {
 133     // Table 5-6 of RN-BT-DATA-UB
 134     // 81,82,83 scan codes can be used?
 135 }
 136
 137
 138 static uint16_t usage2bits(uint16_t usage)
 139 {
 140     switch (usage) {
 141         case AC_HOME:               return 0x01;
 142         case AL_EMAIL:              return 0x02;
 143         case AC_SEARCH:             return 0x04;
 144         //case AL_KBD_LAYOUT:         return 0x08;  // Apple virtual keybaord toggle
 145         case AUDIO_VOL_UP:          return 0x10;
 146         case AUDIO_VOL_DOWN:        return 0x20;
 147         case AUDIO_MUTE:            return 0x40;
 148         case TRANSPORT_PLAY_PAUSE:  return 0x80;
 149         case TRANSPORT_NEXT_TRACK:  return 0x100;
 150         case TRANSPORT_PREV_TRACK:  return 0x200;
 151         case TRANSPORT_STOP:        return 0x400;
 152         case TRANSPORT_STOP_EJECT:  return 0x800;
 153         //case return 0x1000;   // Fast forward
 154         //case return 0x2000;   // Rewind
 155         //case return 0x4000;   // Stop/eject
 156         //case return 0x8000;   // Internet browser
 157     };
 158     return 0;
 159 }
 160
 161 static void send_consumer(uint16_t data)
 162 {
 163     uint16_t bits = usage2bits(data);
 164     serial_send(0xFD);  // Raw report mode
 165     serial_send(3);     // length
 166     serial_send(3);     // descriptor type
 167     serial_send(bits&0xFF);
 168     serial_send((bits>>8)&0xFF);
 169 }
 170
 171
 172 /* Null driver for config_mode */
 173 static uint8_t config_keyboard_leds(void);
 174 static void config_send_keyboard(report_keyboard_t *report);
 175 static void config_send_mouse(report_mouse_t *report);
 176 static void config_send_system(uint16_t data);
 177 static void config_send_consumer(uint16_t data);
 178
 179 host_driver_t rn42_config_driver = {
 180     config_keyboard_leds,
 181     config_send_keyboard,
 182     config_send_mouse,
 183     config_send_system,
 184     config_send_consumer
 185 };
 186
 187 static uint8_t config_keyboard_leds(void) { return 0; }
 188 static void config_send_keyboard(report_keyboard_t *report) {}
 189 static void config_send_mouse(report_mouse_t *report) {}
 190 static void config_send_system(uint16_t data) {}
 191 static void config_send_consumer(uint16_t data) {}