/*
Issues a command to lock/unlock the screen whenever the lock_status toggles.
@param lock_status The current lock status
@param previous_status The previous lock status
@return lock_status The new lock status.
*/
bool execute_status(bool lock_status, bool previous_status, key_device_t* key) {
if(lock_status == previous_status) {
return lock_status;
}
if(lock_status == FALSE) {
bus_send_message("LOCK"); // log after check.
log_event("<execute_status>","Locked screen, no valid keys nearby",INFO);
} else {
bus_send_message("UNLOCK"); // same here
char* user = key -> user;
char* msg = (char*)malloc(sizeof(char) * (USR_LEN + 50));
strcat_mult_str(6,msg,"Unlocked screen, valid key nearby (",user,")");
log_event("<execute_status>",msg,INFO);
if(GREET_USER) {
char greet_id[18];
ba2str(&(key->addr),greet_id);
play_greeting(greet_id);
}
free(msg);
}
return lock_status;
}
// check button state and send messages if a button is pressed.
static void check_buttons (void)
{
const uint8_t registers[8] = {0, 1, 2, 3, 4, 5, 6, 7};
uint8_t temp, msglen, msg[8];
static uint8_t regidx = 0, light = 0;
// check button
g_buttons = PIND & (1<<BTN_TEST | 1<<BTN_EXP);
temp = g_buttons ^ g_oldbuttons;
g_oldbuttons = g_buttons;
if ((g_buttons & 1<<BTN_TEST) && (temp & 1<<BTN_TEST)) {
regidx++;
if (regidx > 7) regidx = 0;
msg[0] = eCMD_REQUEST_REG;
msg[1] = registers[regidx];
msglen = 2;
bus_send_message(&g_bus, get_receiver(1), msglen, msg);
}
else if ((g_buttons & 1<<BTN_EXP) && (temp & 1<<BTN_EXP)) {
if (light) light = 0;
else light = 1;
msg[0] = eCMD_SET_REG_8BIT;
msg[1] = MOD_eReg_FirstAppSpecific;
msg[2] = light;
msglen = 3;
bus_send_message(&g_bus, get_receiver(1), msglen, msg);
}
}
static void send_temperature(uint16_t temperature)
{
uint8_t msg[4];
msg[0] = eCMD_STATE_16BIT;
msg[1] = APP_eReg_CurrentTemperature;
msg[2] = temperature >> 8;
msg[3] = temperature & 0x00FF;
bus_send_message(&g_bus, 0x0000, 4, msg);
}