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#include <avr/io.h>
#include "host.h"
#include "host_driver.h"
#include "serial.h"
#include "rn42.h"
#include "print.h"
#include "wait.h"
/* Host driver */
static uint8_t keyboard_leds(void);
static void send_keyboard(report_keyboard_t *report);
static void send_mouse(report_mouse_t *report);
static void send_system(uint16_t data);
static void send_consumer(uint16_t data);
host_driver_t rn42_driver = {
keyboard_leds,
send_keyboard,
send_mouse,
send_system,
send_consumer
};
void rn42_init(void)
{
// JTAG disable for PORT F. write JTD bit twice within four cycles.
MCUCR |= (1<<JTD);
MCUCR |= (1<<JTD);
// PF7: BT connection control(high: connect, low: disconnect)
rn42_autoconnect();
// PF6: linked(input without pull-up)
DDRF &= ~(1<<6);
PORTF |= (1<<6);
// PF1: RTS(low: allowed to send, high: not allowed)
DDRF &= ~(1<<1);
PORTF &= ~(1<<1);
// PD5: CTS(low: allow to send, high:not allow)
DDRD |= (1<<5);
PORTD &= ~(1<<5);
serial_init();
}
void rn42_putc(uint8_t c)
{
serial_send(c);
}
bool rn42_autoconnecting(void)
{
// GPIO6 for control connection(high: auto connect, low: disconnect)
// Note that this needs config: SM,4(Auto-Connect DTR Mode)
return (PORTF & (1<<7) ? true : false);
}
void rn42_autoconnect(void)
{
// hi to auto connect
DDRF |= (1<<7);
PORTF |= (1<<7);
}
void rn42_disconnect(void)
{
// low to disconnect
DDRF |= (1<<7);
PORTF &= ~(1<<7);
}
bool rn42_rts(void)
{
// low when RN-42 is powered and ready to receive
return PINF&(1<<1);
}
void rn42_cts_hi(void)
{
// not allow to send
PORTD |= (1<<5);
}
void rn42_cts_lo(void)
{
// allow to send
PORTD &= ~(1<<5);
}
bool rn42_linked(void)
{
// RN-42 GPIO2
// Hi-Z: Not powered
// High: Linked
// Low: Connecting
return !rn42_rts() && PINF&(1<<6);
}
static uint8_t leds = 0;
static uint8_t keyboard_leds(void) { return leds; }
void rn42_set_leds(uint8_t l) { leds = l; }
static void send_keyboard(report_keyboard_t *report)
{
// wake from deep sleep
/*
PORTD |= (1<<5); // high
wait_ms(5);
PORTD &= ~(1<<5); // low
*/
serial_send(0xFD); // Raw report mode
serial_send(9); // length
serial_send(1); // descriptor type
serial_send(report->mods);
serial_send(0x00);
serial_send(report->keys[0]);
serial_send(report->keys[1]);
serial_send(report->keys[2]);
serial_send(report->keys[3]);
serial_send(report->keys[4]);
serial_send(report->keys[5]);
}
static void send_mouse(report_mouse_t *report)
{
// wake from deep sleep
/*
PORTD |= (1<<5); // high
wait_ms(5);
PORTD &= ~(1<<5); // low
*/
serial_send(0xFD); // Raw report mode
serial_send(5); // length
serial_send(2); // descriptor type
serial_send(report->buttons);
serial_send(report->x);
serial_send(report->y);
serial_send(report->v);
}
static void send_system(uint16_t data)
{
// Table 5-6 of RN-BT-DATA-UB
// 81,82,83 scan codes can be used?
}
static uint16_t usage2bits(uint16_t usage)
{
switch (usage) {
case AC_HOME: return 0x01;
case AL_EMAIL: return 0x02;
case AC_SEARCH: return 0x04;
//case AL_KBD_LAYOUT: return 0x08; // Apple virtual keybaord toggle
case AUDIO_VOL_UP: return 0x10;
case AUDIO_VOL_DOWN: return 0x20;
case AUDIO_MUTE: return 0x40;
case TRANSPORT_PLAY_PAUSE: return 0x80;
case TRANSPORT_NEXT_TRACK: return 0x100;
case TRANSPORT_PREV_TRACK: return 0x200;
case TRANSPORT_STOP: return 0x400;
case TRANSPORT_STOP_EJECT: return 0x800;
//case return 0x1000; // Fast forward
//case return 0x2000; // Rewind
//case return 0x4000; // Stop/eject
//case return 0x8000; // Internet browser
};
return 0;
}
static void send_consumer(uint16_t data)
{
uint16_t bits = usage2bits(data);
serial_send(0xFD); // Raw report mode
serial_send(3); // length
serial_send(3); // descriptor type
serial_send(bits&0xFF);
serial_send((bits>>8)&0xFF);
}
/* Null driver for config_mode */
static uint8_t config_keyboard_leds(void);
static void config_send_keyboard(report_keyboard_t *report);
static void config_send_mouse(report_mouse_t *report);
static void config_send_system(uint16_t data);
static void config_send_consumer(uint16_t data);
host_driver_t rn42_config_driver = {
config_keyboard_leds,
config_send_keyboard,
config_send_mouse,
config_send_system,
config_send_consumer
};
static uint8_t config_keyboard_leds(void) { return leds; }
static void config_send_keyboard(report_keyboard_t *report) {}
static void config_send_mouse(report_mouse_t *report) {}
static void config_send_system(uint16_t data) {}
static void config_send_consumer(uint16_t data) {}
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