+ uint8_t wrote = 0;
+ /* set checksum */
+ log->csum = 0;
+ log->csum = ao_log_csum((uint8_t *) log);
+ ao_mutex_get(&ao_log_mutex); {
+ if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
+ ao_log_stop();
+ if (ao_log_running) {
+ wrote = 1;
+ ao_storage_write(ao_log_current_pos,
+ log,
+ sizeof (ao_log_type));
+ ao_log_current_pos += sizeof (ao_log_type);
+ }
+ } ao_mutex_put(&ao_log_mutex);
+ return wrote;
+}
+
+uint8_t
+ao_log_check_data(void)
+{
+ if (ao_log_csum((uint8_t *) &ao_log_data) != 0)
+ return 0;
+ return 1;
+}
+
+int16_t
+ao_log_flight(uint8_t slot)
+{
+ if (ao_storage_is_erased(ao_log_pos_block_start(slot)))
+ return 0;
+
+ if (!ao_storage_read(ao_log_pos(slot),
+ &ao_log_data,
+ sizeof (ao_log_type)))
+ return -(int16_t) (slot + 1);
+
+ if (!ao_log_check_data() || ao_log_data.type != AO_LOG_FLIGHT)
+ return -(int16_t) (slot + 1);
+
+ return ao_log_data.u.flight.flight;