🤖 Adds tensorflow lite micro lib

esp32/lib/tfmicro/tensorflow/lite/micro/micro_time.h

@@ -0,0 +1,31 @@
+/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_MICRO_MICRO_TIME_H_
+#define TENSORFLOW_LITE_MICRO_MICRO_TIME_H_
+
+#include <stdint.h>
+
+namespace tflite {
+
+// These functions should be implemented by each target platform, and provide an
+// accurate tick count along with how many ticks there are per second.
+int32_t ticks_per_second();
+
+// Return time in ticks.  The meaning of a tick varies per platform.
+int32_t GetCurrentTimeTicks();
+
+} // namespace tflite
+
+#endif // TENSORFLOW_LITE_MICRO_MICRO_TIME_H_