main_loop.cc

void loop() {
  // Attempt to read new data from the accelerometer
  bool got_data = ReadAccelerometer(error_reporter, model_input->data.f,
                                    input_length, should_clear_buffer);
  // Don't try to clear the buffer again
  should_clear_buffer = false;
  // If there was no new data, wait until next time
  if (!got_data) return;
  // Run inference, and report any error
  TfLiteStatus invoke_status = interpreter->Invoke();
  if (invoke_status != kTfLiteOk) {
    error_reporter->Report("Invoke failed on index: %d\n", begin_index);
    return;
  }

  char s[64];
  float *f = model_input->data.f;
  float *p = interpreter->output(0)->data.f;
  sprintf(s, "%+6.0f : %+6.0f : %+6.0f || W %3.2f : R %3.2f : S %3.2f", \
            f[381], f[382], f[383], p[0], p[1], p[2]);
  error_reporter->Report(s);
  
  // Analyze the results to obtain a prediction
  int gesture_index = PredictGesture(interpreter->output(0)->data.f);
  // Clear the buffer next time we read data
  should_clear_buffer = gesture_index < 3;
  // Produce an output
  HandleOutput(error_reporter, gesture_index);
}