M5Stack-SD_FIle_WriteFile_to_WebServer

WebServer_writefile_M5Stack_SDFile

//#include <M5StickC.h>
#include <M5Stack.h>
#include <WiFi.h>
#include "SD.h"
#include "esp_http_client.h"

//SPIClass SPI2;
//File file;
//===DEF:SD FILE============
File file;
char* fname;//保存するファイル名
int i;
const char* ssid     = "ssid";//Your Wifi ID
const char* password = "pass";//YOur Wifi Pass

char file_name[20] = "/test1.txt";
int  var_size = 2000;

//================================================
void setup() {
  M5.begin();
  M5.Lcd.setRotation(3);
  M5.Lcd.setCursor(0, 0, 2);
 
  M5.Lcd.printf("Connecting to %s ", ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    M5.Lcd.print(".");
  }
  M5.Lcd.println(" CONNECTED");
  //*******************SD FILE OPEN *********************************************************
   //file = SD.open(file_name, FILE_APPEND);
   file = SD.open(file_name, FILE_WRITE);
  for (i=0;i<90000;i++)
  {
    file.print(String(i));
    file.print(",");
    if(i%1000==0)
    {
      file.println();
      //Serial.print(i);
    }
  }
  file.close();
   Serial.println("529KByte  File Created ");
 
}

void loop() {
  M5.update();

  if(M5.BtnA.wasPressed()) {
    file = SD.open(file_name, FILE_READ);
   
    M5.Lcd.fillScreen(BLACK);
    M5.Lcd.setCursor(0, 0, 2);
    M5.Lcd.print("FILE SIZE : ");
    M5.Lcd.println(file.size());
    
    //char tmp_var[file.size()] = "";
    char tmp_var[var_size+1] = "";
    esp_http_client_config_t config = {0};
    config.url       = "http://******************/writefile.php";// Your WEb server Site URL
    config.method    = HTTP_METHOD_POST;

    esp_http_client_handle_t client = esp_http_client_init(&config);
    esp_http_client_open(client, file.size());
    
    //-----------------------------------------------
    Serial.printf("Start Upload time=%d\n\r",millis());
    while(file.available()) {
      char c=file.read();
      //Serial.print(c);//ComentOut for speed measurement
      
      sprintf(tmp_var, "%s%c", tmp_var, c);
       if(strlen(tmp_var)>=var_size) {
        esp_http_client_write(client, (const char *)tmp_var, strlen(tmp_var));
        sprintf(tmp_var, "");
         
        //M5.Lcd.print("*");//ComentOut for speed measurement
        
      }
    }
     esp_http_client_write(client, (const char *)tmp_var, strlen(tmp_var));
    M5.Lcd.fillScreen(BLACK);
    M5.Lcd.setCursor(0, 0, 2);
    M5.Lcd.println("FINISH");
    esp_http_client_close(client);
    esp_http_client_cleanup(client);
    file.close();
     Serial.printf("Upload Finished  time=%d\n\r",millis());
   
    
    
  }
}