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#include <stdint.h>
#include "keycode.h"
#include "serial.h"
#include "host.h"
#include "action.h"
#include "action_util.h"
#include "lufa.h"
#include "rn42_task.h"
#include "print.h"
#include "timer.h"
#include "command.h"
static bool config_mode = false;
static bool force_usb = false;
static void status_led(bool on)
{
if (on) {
DDRE |= (1<<6);
PORTE &= ~(1<<6);
} else {
DDRE |= (1<<6);
PORTE |= (1<<6);
}
}
static void battery_adc_init(void)
{
ADMUX = (1<<REFS1) | (1<<REFS0); // Ref:2.56V band-gap, Input:ADC0(PF0)
ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0); // Prescale:128 16MHz/128=125KHz
ADCSRA |= (1<<ADEN); // enable ADC
}
static uint16_t battery_adc(void)
{
volatile uint16_t bat;
ADCSRA |= (1<<ADEN);
// discard first result
ADCSRA |= (1<<ADSC);
while (ADCSRA & (1<<ADSC)) ;
bat = ADC;
// discard second result
ADCSRA |= (1<<ADSC);
while (ADCSRA & (1<<ADSC)) ;
bat = ADC;
ADCSRA |= (1<<ADSC);
while (ADCSRA & (1<<ADSC)) ;
bat = ADC;
ADCSRA &= ~(1<<ADEN);
return bat;
}
static void battery_led(bool on)
{
if (on) {
DDRF |= (1<<5);
PORTF &= ~(1<<5); // Low
} else {
DDRF &= ~(1<<5);
PORTF &= ~(1<<5); // HiZ
}
}
static bool battery_charging(void)
{
// MCP73831:STAT
// Hi-Z: Shutdown/No Battery
// Low: Charging
// Hi: Charged
DDRF &= ~(1<<5);
PORTF |= (1<<5);
return PINF&(1<<5) ? false : true;
}
void rn42_task_init(void)
{
battery_adc_init();
// battery charging(HiZ)
DDRF &= ~(1<<5);
PORTF &= ~(1<<5);
}
void rn42_task(void)
{
int16_t c;
if (config_mode) {
// Config mode: print output from RN-42
while ((c = serial_recv2()) != -1) {
// without flow control it'll fail to receive data when flooded
xprintf("%c", c);
}
} else {
// Raw mode: interpret output report of LED state
while ((c = serial_recv2()) != -1) {
// LED Out report: 0xFE, 0x02, 0x01, <leds>
// To get the report over UART set bit3 with SH, command.
static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
xprintf("%02X\n", c);
switch (state) {
case LED_INIT:
if (c == 0xFE) state = LED_FE;
else state = LED_INIT;
break;
case LED_FE:
if (c == 0x02) state = LED_02;
else state = LED_INIT;
break;
case LED_02:
if (c == 0x01) state = LED_01;
else state = LED_INIT;
break;
case LED_01:
// TODO: move to rn42.c and make accessible with keyboard_leds()
xprintf("LED status: %02X\n", c);
state = LED_INIT;
break;
default:
state = LED_INIT;
}
}
}
/* Bluetooth mode when ready */
if (!config_mode && !force_usb) {
if (!rn42_rts() && host_get_driver() != &rn42_driver) {
clear_keyboard();
host_set_driver(&rn42_driver);
} else if (rn42_rts() && host_get_driver() != &lufa_driver) {
clear_keyboard();
host_set_driver(&lufa_driver);
}
}
/* Battery monitor */
/* Connection monitor */
if (rn42_linked()) {
status_led(true);
} else {
status_led(false);
}
}
/******************************************************************************
* Command
******************************************************************************/
bool command_extra(uint8_t code)
{
uint32_t t;
uint16_t b;
static host_driver_t *prev_driver = &rn42_driver;
switch (code) {
case KC_H:
case KC_SLASH: /* ? */
print("\n\n----- Bluetooth RN-42 Help -----\n");
print("Del: enter/exit config mode(auto_connect/disconnect)\n");
print("i: RN-42 info\n");
print("b: battery voltage\n");
if (config_mode) {
return true;
} else {
print("u: Force USB mode\n");
return false; // to display default command help
}
case KC_DELETE:
if (rn42_autoconnecting()) {
prev_driver = host_get_driver();
clear_keyboard();
_delay_ms(500);
host_set_driver(&rn42_config_driver); // null driver; not to send a key to host
rn42_disconnect();
print("\nRN-42: disconnect\n");
print("Enter config mode\n");
print("type $$$ to start and + for local echo\n");
command_state = CONSOLE;
config_mode = true;
} else {
rn42_autoconnect();
print("\nRN-42: auto_connect\n");
print("Exit config mode\n");
command_state = ONESHOT;
config_mode = false;
//clear_keyboard();
host_set_driver(prev_driver);
}
return true;
case KC_U:
if (config_mode) return false;
if (force_usb) {
print("Auto mode\n");
force_usb = false;
} else {
print("USB mode\n");
force_usb = true;
clear_keyboard();
host_set_driver(&lufa_driver);
}
return true;
case KC_I:
print("\n----- RN-42 info -----\n");
xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
xprintf("force_usb: %X\n", force_usb);
xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
xprintf("rn42_linked(): %X\n", rn42_linked());
xprintf("rn42_rts(): %X\n", rn42_rts());
xprintf("config_mode: %X\n", config_mode);
xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
xprintf("battery_charging: %X\n", battery_charging());
return true;
case KC_B:
// battery monitor
t = timer_read32()/1000;
b = battery_adc();
xprintf("BAT: %umV(%04X)\t", (b-16)*5, b);
xprintf("%02u:", t/3600);
xprintf("%02u:", t%3600/60);
xprintf("%02u\n", t%60);
return true;
default:
if (config_mode)
return true;
else
return false; // exec default command
}
return true;
}
static uint8_t code2asc(uint8_t code);
bool command_console_extra(uint8_t code)
{
switch (code) {
default:
rn42_putc(code2asc(code));
return true;
}
return false;
}
// convert keycode into ascii charactor
static uint8_t code2asc(uint8_t code)
{
bool shifted = (get_mods() & (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))) ? true : false;
switch (code) {
case KC_A: return (shifted ? 'A' : 'a');
case KC_B: return (shifted ? 'B' : 'b');
case KC_C: return (shifted ? 'C' : 'c');
case KC_D: return (shifted ? 'D' : 'd');
case KC_E: return (shifted ? 'E' : 'e');
case KC_F: return (shifted ? 'F' : 'f');
case KC_G: return (shifted ? 'G' : 'g');
case KC_H: return (shifted ? 'H' : 'h');
case KC_I: return (shifted ? 'I' : 'i');
case KC_J: return (shifted ? 'J' : 'j');
case KC_K: return (shifted ? 'K' : 'k');
case KC_L: return (shifted ? 'L' : 'l');
case KC_M: return (shifted ? 'M' : 'm');
case KC_N: return (shifted ? 'N' : 'n');
case KC_O: return (shifted ? 'O' : 'o');
case KC_P: return (shifted ? 'P' : 'p');
case KC_Q: return (shifted ? 'Q' : 'q');
case KC_R: return (shifted ? 'R' : 'r');
case KC_S: return (shifted ? 'S' : 's');
case KC_T: return (shifted ? 'T' : 't');
case KC_U: return (shifted ? 'U' : 'u');
case KC_V: return (shifted ? 'V' : 'v');
case KC_W: return (shifted ? 'W' : 'w');
case KC_X: return (shifted ? 'X' : 'x');
case KC_Y: return (shifted ? 'Y' : 'y');
case KC_Z: return (shifted ? 'Z' : 'z');
case KC_1: return (shifted ? '!' : '1');
case KC_2: return (shifted ? '@' : '2');
case KC_3: return (shifted ? '#' : '3');
case KC_4: return (shifted ? '$' : '4');
case KC_5: return (shifted ? '%' : '5');
case KC_6: return (shifted ? '^' : '6');
case KC_7: return (shifted ? '&' : '7');
case KC_8: return (shifted ? '*' : '8');
case KC_9: return (shifted ? '(' : '9');
case KC_0: return (shifted ? ')' : '0');
case KC_ENTER: return '\n';
case KC_ESCAPE: return 0x1B;
case KC_BSPACE: return '\b';
case KC_TAB: return '\t';
case KC_SPACE: return ' ';
case KC_MINUS: return (shifted ? '_' : '-');
case KC_EQUAL: return (shifted ? '+' : '=');
case KC_LBRACKET: return (shifted ? '{' : '[');
case KC_RBRACKET: return (shifted ? '}' : ']');
case KC_BSLASH: return (shifted ? '|' : '\\');
case KC_NONUS_HASH: return (shifted ? '|' : '\\');
case KC_SCOLON: return (shifted ? ':' : ';');
case KC_QUOTE: return (shifted ? '"' : '\'');
case KC_GRAVE: return (shifted ? '~' : '`');
case KC_COMMA: return (shifted ? '<' : ',');
case KC_DOT: return (shifted ? '>' : '.');
case KC_SLASH: return (shifted ? '?' : '/');
case KC_DELETE: return '\0'; // Delete to disconnect
default: return ' ';
}
}
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