memory.hpp File Reference

Declares functions to check for free memory on AVR devices. More...

#include <WProgram.h>

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Functions
auto	freeMemory () -> size_t
	Estimate the amount of free SRAM currently available on the MCU.

Detailed Description

Declares functions to check for free memory on AVR devices.

Author

Jacopo Labardi (labodj)

Copyright 2026 Jacopo Labardi

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.

Function Documentation

freeMemory()

auto freeMemory

(

)

-> size_t

Estimate the amount of free SRAM currently available on the MCU.

The implementation combines the stack-to-heap gap with the bytes stored in avr-libc's free list so fragmented allocations are counted too.

Returns

size_t Estimated free SRAM in bytes.

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