Arduino

写内容

#include <SPIFFS.h>

void setup() {
  Serial.begin(115200);
  if (!SPIFFS.begin(true)) {
    Serial.println("SPIFFS mount failed");
    return;
  }
  File file = SPIFFS.open("/xiaohe.txt", "w");
  if (!file) {
    Serial.println("File open failed");
    return;
  }
  file.println("Hello, SPIFFS! QQ496631085");
  file.close();
  Serial.println("File written successfully");
}

void loop() {
  // Your code here
}

读内容

#include <SPIFFS.h>

void setup() {
  Serial.begin(115200);
  if (!SPIFFS.begin()) { // 初始化SPIFFS文件系统
    Serial.println("SPIFFS加载错误!");
    return;
  }

  // 列出文件列表
  File root = SPIFFS.open("/");
  File file = root.openNextFile();

  while (file) {
    Serial.print("文件: ");
    Serial.println(file.name());
    file = root.openNextFile();
  }

  // 读取文件内容
  File readFile = SPIFFS.open("/xiaohe.txt", "r");
  if (readFile) {
    Serial.println("文件内容:");
    while (readFile.available()) {
      Serial.write(readFile.read());
    }
    readFile.close();
  } else {
    Serial.println("文件打开失败");
  }
}

void loop() {
  // Your code here
}