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代码如下:
- /**
- * author :LaoGu
- * time :2021/9/8
- * purpose: 通过File文件演示Stream操作
- ***/
- #include<FS.h>
- String file_name = "/LaoGu/notes.txt"; //被读取的文件位置和名称
- void setup() {
- Serial.begin(9600);
- Serial.println("");
-
- //启动SPIFFS
- if(SPIFFS.begin()){
- Serial.println("SPIFFS started!");
- }else{
- Serial.println("SPIFFS failed to start!");
- }
-
- File dataFile = SPIFFS.open(file_name,"w");
- dataFile.println("Hello IOT World.");
- dataFile.close();
- Serial.println("Finished Writing data to SPIFFS");
- Serial.print("Try to find IOT in ");
- Serial.println(file_name);
- dataFile = SPIFFS.open(file_name,"r");
- if(dataFile.find("IOT")){
- Serial.print("Found IOT in file: ");
- Serial.println(file_name);
- }
- Serial.println("User readString to get contents of dataFile after find");
- Serial.println(dataFile.readString());
- dataFile.close();
- }
- void loop() {}
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