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https://github.com/vee1e/tflite-micro.git
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1c133471cd
@tensorflow/micro Preparatory work for [b/297590035](https://issuetracker.google.com/297590035) Add MicroSnprintf Add MicroVsnprintf Update debug_log.cc for all required targets Add debug_log.cc for riscv32_generic target using third-party eyalroz printf code (riscv32_generic stdio formatting does not support %f) bug=fixes #2342
54 lines
2.5 KiB
C++
54 lines
2.5 KiB
C++
/* Copyright 2023 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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// Reference implementation of the DebugLog() function that's required for a
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// platform to support the TensorFlow Lite for Microcontrollers library. This is
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// the only function that's absolutely required to be available on a target
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// device, since it's used for communicating test results back to the host so
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// that we can verify the implementation is working correctly.
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// This function should support standard C/C++ stdio style formatting
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// operations. It's designed to be as easy as possible to supply an
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// implementation though. On platforms that have a POSIX stack or C library, it
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// can be written as a single call to `vfprintf(stderr, format, args)` to output
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// a string to the error stream of the console, but if there's no OS or C
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// library available, there's almost always an equivalent way to write out a
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// string to some serial interface that can be used instead. To add an
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// equivalent function for your own platform, create your own implementation
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// file, and place it in a subfolder with named after the OS you're targeting.
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// For example, see the Cortex M bare metal version in the
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// tensorflow/lite/micro/bluepill/debug_log.cc file.
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#include "tensorflow/lite/micro/debug_log.h"
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#ifndef TF_LITE_STRIP_ERROR_STRINGS
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#include <cstdio>
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#endif
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extern "C" void DebugLog(const char* format, va_list args) {
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#ifndef TF_LITE_STRIP_ERROR_STRINGS
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// Reusing TF_LITE_STRIP_ERROR_STRINGS to disable DebugLog completely to get
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// maximum reduction in binary size. This is because we have DebugLog calls
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// via TF_LITE_CHECK that are not stubbed out by TF_LITE_REPORT_ERROR.
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vfprintf(stderr, format, args);
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#endif
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}
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#ifndef TF_LITE_STRIP_ERROR_STRINGS
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// Only called from MicroVsnprintf (micro_log.h)
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extern "C" int DebugVsnprintf(char* buffer, size_t buf_size, const char* format,
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va_list vlist) {
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return vsnprintf(buffer, buf_size, format, vlist);
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}
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#endif
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