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     // PF1: check RTS(active low)
  28     DDRF &= ~(1<<1);
  29     PORTF &= ~(1<<1);
  30
  31     // PF7: BT connection control(HiZ: connect, low: disconnect)
  32     // JTAG disable for PORT F. write JTD bit twice within four cycles.
  33     MCUCR |= (1<<JTD);
  34     MCUCR |= (1<<JTD);
  35     rn42_autoconnect();
  36
  37     // PD5: CTS    (low: allow to send, high:not allowed)
  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 void rn42_autoconnect(void)
  50 {
  51     DDRF &= ~(1<<7);
  52     PORTF &= ~(1<<7);
  53 }
  54
  55 void rn42_disconnect(void)
  56 {
  57     DDRF |= (1<<7);
  58     PORTF &= ~(1<<7);
  59 }
  60
  61 bool rn42_ready(void)
  62 {
  63     // RTS low
  64     return PINF&(1<<1) ? false : true;
  65 }
  66
  67
  68 static uint8_t keyboard_leds(void) { return 0; }
  69
  70 static void send_keyboard(report_keyboard_t *report)
  71 {
  72     // wake from deep sleep
  73     PORTD |= (1<<5);    // high
  74     wait_ms(5);
  75     PORTD &= ~(1<<5);   // low
  76
  77     serial_send(0xFD);  // Raw report mode
  78     serial_send(9);     // length
  79     serial_send(1);     // descriptor type
  80     serial_send(report->mods);
  81     serial_send(0x00);
  82     serial_send(report->keys[0]);
  83     serial_send(report->keys[1]);
  84     serial_send(report->keys[2]);
  85     serial_send(report->keys[3]);
  86     serial_send(report->keys[4]);
  87     serial_send(report->keys[5]);
  88 }
  89
  90 static void send_mouse(report_mouse_t *report)
  91 {
  92     // wake from deep sleep
  93     PORTD |= (1<<5);    // high
  94     wait_ms(5);
  95     PORTD &= ~(1<<5);   // low
  96
  97     serial_send(0xFD);  // Raw report mode
  98     serial_send(5);     // length
  99     serial_send(2);     // descriptor type
 100     serial_send(report->buttons);
 101     serial_send(report->x);
 102     serial_send(report->y);
 103     serial_send(report->v);
 104 }
 105
 106 static void send_system(uint16_t data)
 107 {
 108     // Table 5-6 of RN-BT-DATA-UB
 109     // 81,82,83 scan codes can be used?
 110 }
 111
 112
 113 static uint16_t usage2bits(uint16_t usage)
 114 {
 115     switch (usage) {
 116         case AC_HOME:               return 0x01;
 117         case AL_EMAIL:              return 0x02;
 118         case AC_SEARCH:             return 0x04;
 119         //case AL_KBD_LAYOUT:         return 0x08;  // Apple virtual keybaord toggle
 120         case AUDIO_VOL_UP:          return 0x10;
 121         case AUDIO_VOL_DOWN:        return 0x20;
 122         case AUDIO_MUTE:            return 0x40;
 123         case TRANSPORT_PLAY_PAUSE:  return 0x80;
 124         case TRANSPORT_NEXT_TRACK:  return 0x100;
 125         case TRANSPORT_PREV_TRACK:  return 0x200;
 126         case TRANSPORT_STOP:        return 0x400;
 127         case TRANSPORT_STOP_EJECT:  return 0x800;
 128         //case return 0x1000;   // Fast forward
 129         //case return 0x2000;   // Rewind
 130         //case return 0x4000;   // Stop/eject
 131         //case return 0x8000;   // Internet browser
 132     };
 133     return 0;
 134 }
 135
 136 static void send_consumer(uint16_t data)
 137 {
 138     uint16_t bits = usage2bits(data);
 139     serial_send(0xFD);  // Raw report mode
 140     serial_send(3);     // length
 141     serial_send(3);     // descriptor type
 142     serial_send((bits>>8)&0xFF);
 143     serial_send(bits&0xFF);
 144 }
 145
 146
 147 /* Null driver for config_mode */
 148 static uint8_t config_keyboard_leds(void);
 149 static void config_send_keyboard(report_keyboard_t *report);
 150 static void config_send_mouse(report_mouse_t *report);
 151 static void config_send_system(uint16_t data);
 152 static void config_send_consumer(uint16_t data);
 153
 154 host_driver_t rn42_config_driver = {
 155     config_keyboard_leds,
 156     config_send_keyboard,
 157     config_send_mouse,
 158     config_send_system,
 159     config_send_consumer
 160 };
 161
 162 static uint8_t config_keyboard_leds(void) { return 0; }
 163 static void config_send_keyboard(report_keyboard_t *report) {}
 164 static void config_send_mouse(report_mouse_t *report) {}
 165 static void config_send_system(uint16_t data) {}
 166 static void config_send_consumer(uint16_t data) {}