void spike_process(uint unused0, uint unused1) {
use(unused0);
use(unused1);
// Get current time slot of incoming spike counters
uint32_t current_time_slot = time & num_delay_slots_mask;
uint8_t *current_time_slot_spike_counters =
spike_counters[current_time_slot];
log_debug("Current time slot %u", current_time_slot);
// Zero all counters in current time slot
memset(current_time_slot_spike_counters, 0, sizeof(uint8_t) * num_neurons);
// While there are any incoming spikes
spike_t s;
while (in_spikes_get_next_spike(&s)) {
// Mask out neuron id
uint32_t neuron_id = _key_n(s);
if (neuron_id < num_neurons) {
// Increment counter
current_time_slot_spike_counters[neuron_id]++;
log_debug("Incrementing counter %u = %u\n", neuron_id,
current_time_slot_spike_counters[neuron_id]);
} else {
log_debug("Invalid neuron ID %u", neuron_id);
}
}
processing_spikes = false;
}
// Callbacks
void timer_callback(uint unused0, uint unused1) {
use(unused0);
use(unused1);
time++;
log_debug("Timer tick %d", time);
if ((infinite_run != TRUE) && (time == simulation_ticks)) {
simulation_handle_pause_resume(NULL);
log_info("Simulation complete.\n");
simulation_ready_to_read();
}
// Process the incoming spikes
spike_t s;
uint32_t nid;
while (in_spikes_get_next_spike(&s)) {
nid = (s & NEURON_ID_MASK);
if (nid < N_COUNTERS) {
counters[nid] += 1;
} else {
log_debug("Received spike from unknown neuron %d", nid);
}
}
// Work out if there is any motion
if ((time % sample_time) == 0) {
// Do motion in pairs
do_motion(MOTION_FORWARD, MOTION_BACK, "Forwards", "Backwards");
do_motion(MOTION_LEFT, MOTION_RIGHT, "Left", "Right");
do_motion(MOTION_CLOCKWISE, MOTION_C_CLOCKWISE, "Clockwise",
"Anti-clockwise");
// Reset the counters
for (uint32_t i = 0; i < N_COUNTERS; i++) {
counters[i] = 0;
}
} else if ((time % update_time) == 0) {
// Do updates in pairs
do_update(MOTION_FORWARD, MOTION_BACK, "Forwards", "Backwards");
do_update(MOTION_LEFT, MOTION_RIGHT, "Left", "Right");
do_update(MOTION_CLOCKWISE, MOTION_C_CLOCKWISE, "Clockwise",
"Anti-clockwise");
}
}