void transport_control_step(void)
{
uint64_t next_time;
uint64_t time_now = timer_get_timestamp() + global_time;
trickle_time_update(time_now);
uint32_t error_code = mesh_srv_get_next_processing_time(&next_time);
if (error_code != NRF_SUCCESS)
{
return;
}
if (next_time < time_now)
{
async_event_t async_evt;
async_evt.callback.generic = trickle_step_callback;
async_evt.type = EVENT_TYPE_GENERIC;
event_handler_push(&async_evt);
}
else
{
if (next_time < global_time + timeslot_get_end_time())
{
timer_abort(step_timer_index);
step_timer_index = timer_order_cb(next_time - global_time, trickle_step_callback);
}
}
}
int timer_testTearDown(void)
{
unsigned i;
for (i = 0; i < countof(test_timers); ++i)
timer_abort(&test_timers[i]);
return 0;
}
/**
* Sleep until any of the signals in \a sigs or \a timeout ticks elapse.
* If the timeout elapse a SIG_TIMEOUT is added to the received signal(s).
* \return the signal(s) that have awoken the process.
* \note Caller must check return value to check which signal awoke the process.
*/
sigmask_t sig_waitTimeout(sigmask_t sigs, ticks_t timeout)
{
Timer t;
sigmask_t res;
cpu_flags_t flags;
ASSERT(!sig_check(SIG_TIMEOUT));
ASSERT(!(sigs & SIG_TIMEOUT));
/* IRQ are needed to run timer */
ASSERT(IRQ_ENABLED());
timer_set_event_signal(&t, proc_current(), SIG_TIMEOUT);
timer_setDelay(&t, timeout);
timer_add(&t);
res = sig_wait(SIG_TIMEOUT | sigs);
IRQ_SAVE_DISABLE(flags);
/* Remove timer if sigs occur before timer signal */
if (!(res & SIG_TIMEOUT) && !sig_check(SIG_TIMEOUT))
timer_abort(&t);
IRQ_RESTORE(flags);
return res;
}
/**
* @brief Handle trickle timing events
*/
static void trickle_step_callback(void)
{
TICK_PIN(6);
/* check if timeslot is about to end */
if (timeslot_get_remaining_time() < RADIO_SAFETY_TIMING_US)
return;
uint64_t time_now = global_time + timer_get_timestamp();
trickle_time_update(time_now);
packet_t packet;
bool has_anything_to_send = false;
mesh_srv_packet_assemble(&packet, PACKET_DATA_MAX_LEN * PACKET_MAX_CHAIN_LEN,
&has_anything_to_send);
if (has_anything_to_send)
{
TICK_PIN(PIN_MESH_TX);
radio_disable();
uint8_t packet_and_addr_type = PACKET_TYPE_ADV_NONCONN |
((packet.sender.addr_type == BLE_GAP_ADDR_TYPE_PUBLIC)?
0 :
PACKET_ADDR_TYPE_MASK);
uint8_t* temp_data_ptr = &packet.data[0];
uint8_t* tx_data_ptr = &tx_data[0];
tx_data_ptr[PACKET_TYPE_POS] = packet_and_addr_type;
/* Code structured for packet chaining, although this is yet
to be implemented. */
do
{
uint8_t min_len = ((packet.length > PACKET_DATA_MAX_LEN)?
PACKET_DATA_MAX_LEN :
packet.length);
tx_data_ptr[PACKET_PADDING_POS] = 0;
tx_data_ptr[PACKET_LENGTH_POS] = (min_len + PACKET_ADDR_LEN);
tx_data_ptr[PACKET_TYPE_POS] = packet_and_addr_type;
memcpy(&tx_data_ptr[PACKET_ADDR_POS], packet.sender.addr, PACKET_ADDR_LEN);
memcpy(&tx_data_ptr[PACKET_DATA_POS], &temp_data_ptr[0], min_len);
radio_event_t tx_event;
tx_event.access_address = 0;
rbc_mesh_channel_get(&tx_event.channel);
tx_event.event_type = RADIO_EVENT_TYPE_TX;
tx_event.packet_ptr = &tx_data_ptr[0];
tx_event.start_time = 0;
tx_event.callback.tx = NULL;
radio_order(&tx_event);
TICK_PIN(0);
} while (0);
order_search(); /* search for the rest of the timeslot */
}
/* order next processing */
uint64_t next_time;
uint64_t end_time = timeslot_get_end_time();
uint32_t error_code = mesh_srv_get_next_processing_time(&next_time);
if (error_code == NRF_SUCCESS && next_time < global_time + end_time)
{
timer_abort(step_timer_index);
step_timer_index = timer_order_cb(next_time - global_time, trickle_step_callback);
}
}
/**
* @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;
}
/**
* @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)
{
static uint32_t requested_extend_time = 0;
static uint32_t successful_extensions = 0;
static uint32_t timeslot_count = 0;
if (sig == NRF_RADIO_CALLBACK_SIGNAL_TYPE_START)
{
g_timeslot_forced_command = TS_FORCED_COMMAND_NONE;
}
else /* on forced command */
{
switch (g_timeslot_forced_command)
{
case TS_FORCED_COMMAND_STOP:
g_ret_param.callback_action = NRF_RADIO_SIGNAL_CALLBACK_ACTION_END;
g_is_in_timeslot = false;
g_end_timer_triggered = false;
CLEAR_PIN(PIN_IN_TS);
event_handler_on_ts_end();
timeslot_count = 0;
return &g_ret_param;
case TS_FORCED_COMMAND_RESTART:
timeslot_order_earliest(TIMESLOT_SLOT_LENGTH, true);
g_is_in_timeslot = false;
g_end_timer_triggered = false;
CLEAR_PIN(PIN_IN_TS);
event_handler_on_ts_end();
radio_disable();
return &g_ret_param;
default:
break;
}
}
g_ret_param.callback_action = NRF_RADIO_SIGNAL_CALLBACK_ACTION_NONE;
g_is_in_callback = true;
SET_PIN(PIN_IN_CB);
switch (sig)
{
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_START:
{
SET_PIN(PIN_IN_TS);
g_is_in_timeslot = true;
g_end_timer_triggered = false;
successful_extensions = 0;
if (timeslot_count > 0)
{
global_time_update();
}
mesh_packet_on_ts_begin();
event_handler_on_ts_begin();
timer_on_ts_begin();
tc_on_ts_begin();
g_negotiate_timeslot_length = TIMESLOT_SLOT_EXTEND_LENGTH;
g_timeslot_length = g_next_timeslot_length;
timer_order_cb_sync_exec(TIMER_INDEX_TS_END, g_timeslot_length - end_timer_margin(),
end_timer_handler);
/* attempt to extend our time right away */
timeslot_extend(g_negotiate_timeslot_length);
/* increase timeslot-count, but skip =0 on rollover */
if (!++timeslot_count)
{
timeslot_count++;
}
break;
}
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_RADIO:
/* send to radio control module */
SET_PIN(PIN_RADIO_SIGNAL);
radio_event_handler();
CLEAR_PIN(PIN_RADIO_SIGNAL);
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_TIMER0:
/* send to timer control module */
SET_PIN(PIN_TIMER_SIGNAL);
timer_event_handler();
CLEAR_PIN(PIN_TIMER_SIGNAL);
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_EXTEND_SUCCEEDED:
g_timeslot_length += requested_extend_time;
requested_extend_time = 0;
++successful_extensions;
timer_abort(TIMER_INDEX_TS_END);
timer_order_cb_sync_exec(TIMER_INDEX_TS_END, g_timeslot_length - end_timer_margin(),
end_timer_handler);
g_ret_param.callback_action = NRF_RADIO_SIGNAL_CALLBACK_ACTION_NONE;
TICK_PIN(PIN_EXTENSION_OK);
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 */
vh_on_timeslot_begin();
}
break;
case NRF_RADIO_CALLBACK_SIGNAL_TYPE_EXTEND_FAILED:
g_negotiate_timeslot_length >>= 1;
TICK_PIN(PIN_EXTENSION_FAIL);
if (g_negotiate_timeslot_length > 1000)
{
timeslot_extend(g_negotiate_timeslot_length);
}
else
{
/* done extending, check for new trickle event */
vh_on_timeslot_begin();
}
break;
default:
APP_ERROR_CHECK(NRF_ERROR_INVALID_STATE);
}
if (g_end_timer_triggered)
{
timeslot_order_earliest(TIMESLOT_SLOT_LENGTH, true);
g_is_in_timeslot = false;
g_end_timer_triggered = false;
CLEAR_PIN(PIN_IN_TS);
event_handler_on_ts_end();
radio_disable();
timer_on_ts_end();
}
else if (g_ret_param.callback_action == NRF_RADIO_SIGNAL_CALLBACK_ACTION_EXTEND)
{
requested_extend_time = g_ret_param.params.extend.length_us;
}
else
{
requested_extend_time = 0;
}
g_is_in_callback = false;
CLEAR_PIN(PIN_IN_CB);
return &g_ret_param;
}