如何确定 ESP32 上有多少百分比的内存在堆中是空闲的？
此方法适用于 Arduino / PlatformIO 以及 ESP-IDF 项目。
esp32_heap_percentage_example.cpp
#include <esp_heap_caps.h>
uint32_t freeHeapBytes = heap_caps_get_free_size(MALLOC_CAP_DEFAULT);
uint32_t totalHeapBytes = heap_caps_get_total_size(MALLOC_CAP_DEFAULT);
float percentageHeapFree = freeHeapBytes * 100.0f / (float)totalHeapBytes;
// 打印到串口
Serial.printf("[Memory] %.1f%% free - %d of %d bytes free\n", percentageHeapFree, freeHeapBytes, totalHeapBytes);Check out similar posts by category:
ESP8266/ESP32
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