RE: Bluetooth Data, File, Image transfer and Control using Arduino

jlst — Sun, 29 Apr 2018 18:55:21 GMT

Excelent article !!

I have been studying your code about transfering a text file from PC to SD Card, because I needed something similar. Doing some changes it is possible to transfer any text file (without EOF marker) and even a binary file (for instance a 3Mb JPG file):

This is the code:

/******Dump_Binary_SD*****************/

#include <SoftwareSerial.h>

SoftwareSerial sigmaSS(8,9); // Rx,Tx

#include <SD.h>

#include <SPI.h>

File myFile;

unsigned long last = 0;

long count = 0;

bool read = 0;

void setup() {

Serial.begin(9600);

sigmaSS.begin(9600);

Serial.print("Initializing SD card...");

if (!SD.begin(4)) {

Serial.println("Initialization Failed!");

return;

}

Serial.println("initialization done.");

}

void loop() {

if(Serial.available()){

createStr();

}

void createStr(){

if (!read) {

myFile = SD.open("42.jpg", O_CREAT | O_WRITE);

while (millis() - last < 1000 || count== 0) // Delay time, try to change if doesn't work

{

while (Serial.available() > 0)

{

myFile.write(Serial.read());

last = millis();

count++;

}

myFile.close();

read = 1;

Serial.print ("File written to SD card");

}

RE: Bluetooth Data, File, Image transfer and Control using Arduino

DAB — Sun, 16 Jul 2017 18:31:23 GMT

Very good detailed post.

Well done.

DAB