Problem: Upload Binary File to EEPROM

Using Arduino Programming Questions
#1

Hi @ all !

I try to upload a binary file from my PC to my arduino’s EEPROM. I searched the web for hours and did not find a solution.
My attempt:

void loop()
{
    int i = 64;   
   Serial.print("ready to read bytes and write bytes into eeprom: ");   
   char hex[2];
   
   while (i < 512)
   {
      if (Serial.available() > 0)
      {         
         byte b = Serial.read();
         
         Serial.print("Became: "); Serial.println(b, 10);
         delay(1);
                  
         EEPROM.write(i, b);
         i++;
      }
      else
         delay(1);
   }
   
   Serial.print("eeprom full!");
   
   while(true)
      delay(1000);
}

If i upload my test binary file (which has all values from 0 - 255 in a row) via GTKTerm or minicom, following output is generated:

Became: 1
Became: 2
Became: 3
Became: 4
Became: 5
… [everything right until:]
Became: 72
Became: 73
Became: 74
Became: 76
Became: 85
Became: 97
Became: 109
Became: 121
Became: 133
Became: 145
Became: 157
…

You see, there are many values missing.
So please guys, what am I doing wrong?

So long! -mindbyte

#2

you might check for avrdude.exe and do the upload to EEPROM directly from PC?

So please guys, what am I doing wrong?

  • you did not post your whole code.
  • you print a lot while data comes in, your input buffer might overflow?
    try it without the print statements (the echo)...
#3

Hello and thank you for your reply.
Sorry but this is the full source code. The rest is:

#include "EEPROM.h"

void setup()
{
   Serial.begin(19200);
}

In addition, I can not provide avrdude to upload binary data to eeprom.

EDIT:

Okay, my solution was to lower the baudrate. My GTKTerm sent the file too fast, input buffer ran over. Now it is working. Thank you.

#4

you’re welcome,

You could also do the printing after the storage, it has some advantages.

void setup()
{
    Serial.begin(19200);
   Serial.print("ready to read bytes and write bytes into eeprom: ");   

   unsigned long start = millis();

    int i = 64; 
   char hex[2];
   
   while ( ( i < 512 ) && ( millis() - start ) < 120000UL) )  // timout after 2 minutes
   {
      if (Serial.available() > 0)
      {         
         byte b = Serial.read();
         EEPROM.write(i, b);
         i++;
      }
   }

  Serial.print("eeprom full! -> dump content");

  for (int i = 64; i< 512; i++)
  {
    Serial.print(i. DEC); 
    Serial.print(" :\t"); 
    Serial.println(EEPROM.read(i), DEC);  // read back is a guarantee it is saved in the EEPROM
   }

}

void loop(){}
#5

Friend, I'm tottaly new in arduino and programming stuff.
But I reallyy need to upload a .bin file to a EEPROM.
Can you help me?
I understand you initialized the write protocol in arduino, after that you only use the GTKTerm software to uppload the binary file?

#6

You shouldn’t hi jack a thread like this , you should start your own.
Have you looked at the example programs for the eeprom library ?

Why do you need to write, as a beginner to eeprom anyway ?

#7