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1answer
27 views

Esp32: upload eeprom file

I'd like to flash the eeprom sector with content so that the eeprom already holds data when it boots the first time. How do I upload such an eeprom file like I would do with avrdude on an atmega? Is ...
2
votes
2answers
221 views

EEPROM.get returns bad data

I am using the attached code. What I am trying to do is: Test if there is a personalized "board serial number" written in the EEPROM (by previous code run) If data found was not 7 characters (e.g SN-...
-1
votes
1answer
38 views

esp8266 esp01s EEPROM and flashing

which flash option do I need to take to use EEPROM? Can I flash with 1MB and no SPIFFs and still write data to EEPROM? thanks T
2
votes
1answer
46 views

Is it possible to execute a code in runtime when gets updated over the air (OTA)?

I would like to build a lib like ArduinoOTA but with no downtime at runtime. To achieve that I am wondering if it is possible to create a simple setup and loop code to Check for new releases If we ...
2
votes
3answers
1k views

Is it possible to use extra AVR Flash memory as non-volatile EEPROM-like Flash memory storage?

In STM32 microcontrollers it is possible to use a technique that ST calls IAP, or In-Application Programming, in order to write to the Flash memory from your running application. They even have a nice ...
2
votes
1answer
6k views

String to persistent memory (EEPROM?)

I am creating a server node that I want to be able to save the wifi SSID and the password into persistent memory so that when it starts ups it can connect to the network. I have looked for several ...
2
votes
1answer
1k views

Arduino EEPROM retains old data after flashing with a new program

I have a custom 5V 16Mhz Arduino Uno (a breadboard Uno of sorts) that runs the grbl firmware. After the initial flashing I can see all the settings (through the serial monitor) and everything works. ...
0
votes
1answer
78 views

Question about configuration EEPROM or Flash

I want to make an external (not related to Arduino) computer application that creates a big 'setup file' (like max. 64 KB). This setup file contains lookup tables (which are configurable and the ...
0
votes
2answers
544 views

Store data in flash/EEPROM and process it in parallel

I want to store incoming data in flash or EEPROM and then apply FFT or some other method to detect frequency and intensity. I am taking sound through microphone amplifying it with an LM741 and giving ...
4
votes
3answers
2k views

Set EEPROM from PC before program

I have been working on an arduino program, which has gotten rather large. I am close to hitting the 32k limit on Flash for my ATmega328p. I would like lower my program size by saving some of my many ...
3
votes
2answers
5k views

How to read/write variables persistenly on Arduino Due (no EEPROM/shield)?

I am relatively new to Arduino and I am currently writing some code to control a relay board. The on/off times are provided by the user at run-time and should be stored persistently (EEPROM or flash) ...
0
votes
2answers
174 views

Storing data (strings) if ethernet fails to send it

Flow goes something like: Read sensors Send data If send fails store the data in eeprom/flash/sd If sent check if any previous ones have failed and send those So my question is what's the best ...
5
votes
2answers
4k views

Is it possible to run a binary from EEPROM?

Say I wrote a compiled sketch to EEPROM then read it. Could I run the program from EEPROM? I guess the question is: Can an Arduino run software not in flash memory in the middle of executing the ...