void transport_control_timeslot_begin(uint64_t global_timer_value)
{
uint32_t aa;
uint32_t error_code = rbc_mesh_access_address_get(&aa);
APP_ERROR_CHECK(error_code);
radio_init(aa);
step_timer_index = 0xFF;
global_time = global_timer_value;
order_search();
transport_control_step();
}
/**
* @brief Radio signal callback handler taking care of all signals in searching
* mode
*/
static nrf_radio_signal_callback_return_param_t* radio_signal_callback(uint8_t sig)
{
g_ret_param.callback_action = NRF_RADIO_SIGNAL_CALLBACK_ACTION_NONE;
g_is_in_callback = true;
static uint32_t requested_extend_time = 0;
static uint32_t successful_extensions = 0;
static uint64_t last_rtc_value = 0;
//static uint8_t noise_val = 0x5F;
SET_PIN(PIN_SYNC_TIME);
static uint64_t time_now = 0;
switch (sig)
{
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_START:
{
NVIC_ClearPendingIRQ(SWI0_IRQn);
g_is_in_timeslot = true;
event_fifo_flush();
timer_init();
SET_PIN(2);
successful_extensions = 0;
g_negotiate_timeslot_length = g_timeslot_length;
g_timeslot_length = g_next_timeslot_length;
g_timeslot_end_timer =
timer_order_cb_sync_exec(g_timeslot_length - TIMESLOT_END_SAFETY_MARGIN_US,
end_timer_handler);
/* attempt to extend our time right away */
timeslot_extend(g_negotiate_timeslot_length);
#if USE_SWI_FOR_PROCESSING
NVIC_EnableIRQ(SWI0_IRQn);
NVIC_SetPriority(SWI0_IRQn, 3);
#endif
/* sample RTC timer for trickle timing */
uint32_t rtc_time = NRF_RTC0->COUNTER;
/*First time the offset should be added*/
if(last_rtc_value == 0)
{
last_rtc_value = g_start_time_ref;
}
/* Calculate delta rtc time */
uint64_t delta_rtc_time;
if(last_rtc_value > rtc_time)
{
delta_rtc_time = 0xFFFFFF - last_rtc_value + rtc_time;
}
else
{
delta_rtc_time = rtc_time - last_rtc_value;
}
/* Store last rtc time */
last_rtc_value = rtc_time;
/* scale to become us */
time_now += ((delta_rtc_time << 15) / 1000);
transport_control_timeslot_begin(time_now);
break;
}
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_RADIO:
/* send to radio control module */
TICK_PIN(PIN_RADIO_SIGNAL);
radio_event_handler();
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_TIMER0:
/* send to timer control module */
TICK_PIN(PIN_TIMER_SIGNAL);
timer_event_handler();
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_EXTEND_SUCCEEDED:
g_timeslot_length += requested_extend_time;
requested_extend_time = 0;
++successful_extensions;
g_ret_param.callback_action = NRF_RADIO_SIGNAL_CALLBACK_ACTION_NONE;
timer_abort(g_timeslot_end_timer);
g_timeslot_end_timer =
timer_order_cb_sync_exec(g_timeslot_length - TIMESLOT_END_SAFETY_MARGIN_US,
end_timer_handler);
TICK_PIN(1);
if (g_timeslot_length + g_negotiate_timeslot_length < TIMESLOT_MAX_LENGTH)
{
timeslot_extend(g_negotiate_timeslot_length);
}
else
{
/* done extending, check for new trickle event */
transport_control_step();
}
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_EXTEND_FAILED:
g_negotiate_timeslot_length >>= 2;
TICK_PIN(1);
if (g_negotiate_timeslot_length > 1000)
{
timeslot_extend(g_negotiate_timeslot_length);
}
else
{
/* done extending, check for new trickle event */
transport_control_step();
}
break;
default:
APP_ERROR_CHECK(NRF_ERROR_INVALID_STATE);
}
g_is_in_callback = false;
if (g_ret_param.callback_action == NRF_RADIO_SIGNAL_CALLBACK_ACTION_EXTEND)
{
requested_extend_time = g_ret_param.params.extend.length_us;
}
else if (g_ret_param.callback_action == NRF_RADIO_SIGNAL_CALLBACK_ACTION_REQUEST_AND_END)
{
CLEAR_PIN(2);
g_is_in_timeslot = false;
event_fifo_flush();
}
else
{
requested_extend_time = 0;
}
CLEAR_PIN(PIN_SYNC_TIME);
return &g_ret_param;
}
