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Questions tagged [eeprom]

Anything related to Electrically-Erasable Programmable Read Only Memory (EEPROM), a kind of non-volatile electronic memory technology. EEPROMs can be programmed and erased using only electrical signals and maintain their content also in absence of power supply. The now ubiquitous Flash memory is a specialized form of EEPROM. QUESTIONS ON STACK OVERFLOW MUST BE PROGRAMMING-RELATED, for other types of questions, post on another Stack Exchange site.

Anything related to Electrically-Erasable Programmable Read Only Memory (EEPROM), a kind of non-volatile electronic memory technology. EEPROMs can be programmed and erased using only electrical signals and maintain their content also in absence of power supply. The now ubiquitous is a specialized form of EEPROM.

See Wikipedia page on EEPROMs.

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Howto Remove Garbage Data from String

I'm in a situation where I have to use Python to read and write to an EEPROM on an embedded device. The first page (256 bytes) is used for non-volatile data storage. My problem is that the variables can vary in length, and I need to read a fixed…
linsek
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I²C EEPROM read error in a specific address block

I have an Arduino's I²C bus connected to the I²C bus of a Microchip PICDEM 2 board to program its 32K byte EEPROM. The code below has a read problem. Specifically, I have written the entire EEPROM with a 16-bit counting pattern and verified that all…
mkstlwtz
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Failure in writing to EEPROM, through IC2, on PIC32MX

PIC: PIC32MX564F128L EEPROM: 24AA16 I've put together some code for the PIC, in C, to read & write to an external EEPROM, via I2C. When I use these methods to write a single byte, then read it back again for verification, it works. If I change the…
Dave
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EEPROM 24lc256 with PIC18F4550

I am working on a university project in which i need to interface pic18f4550 with i2c EEPROM. I implemented the following circuit using proteus simulator. The following in my connections when I implemented the interfacing on real, I faced a problem…
Developer
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Is this possible to store sensor data in EEPROM and update that data into EXCEL file using Tkinter GUI?

I am working with ESP32 and AHT25 sensor to get temperature and humidity values. I want to store that temperature and humidity values in EEPROM. I don't know much about storing data's in EEPROM. Can anyone please tell me how to do this? And also I…
Kuralmozhi
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EEPROM replacing first char in string with a comma

I have an app that I am writing three strings to EEPROM. The strings are from when the user first starts the app. They are from "WiFiManager". code WiFiManager wifiManager; WiFiManagerParameter customAPIKey("authorizationKey", "Authorization…
user1114881
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How do I add Client Username and Key to MQTT Adafruit app

I have an app which connects to io.adafruit MQTT and publishes to my feeds when new data is available, NO PROBLEM. I am working with Arduino programing on an ESP8266-01. I do this by setting up the connection into and publish info in my header?…
user1114881
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How to change an Adress in a loop

I want to change an Address in a for loop : for (int i = 0, a = kali.CalibNo; i <= (kali.CalibNo-1) && mess.j > 0; i++, a--) { mess.stc[i] = ((-mess.Acal[a][0]) + (mess.Acal[a - 1][0])) / (-val.Value[a] + val.Value[a - 1]); …
Marc Hammer
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How to write serial data ino I2C EEPROM?

I'm really new about microcontroller and I want to ask if I want to read the values of three different sensors and store those values in succession in an I2C EEPROM, each value occupies 6 bytes in the address, how can I do that using the I2C bus?…
Namfield
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Getting error: incompatible types in assignment of 'const char*' to 'char [100]'

I am trying to save a char to EEPROM and then retrieve it. I am using an ESP32-CAM with this code and the Arduino IDE: #include int addr = 0; char ssidString[100] = {0}; float floatFromPC2 = 0; char pskString[100] = {0}; void…
user1114881
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How can i get an Arduino sketch save preferences?

I have been writing lots of different kinds of Sketches for Arduino, but there is something I have not heard if it is possible. I would like to be able to get an Arduino to save preferences that can be restored back when the Arduino restarts. The…
B. Taylor
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c - STM32F1 EEPROM emulation through flash

I am trying to emulate EEPROM via flash on my STM32F1, as described here (for STM32F4) for example, but I am struggling to change the code for STM32F1RB (medium density) specifications. I am using SW4STM32, CubeMX and the HAL…
J.Doe
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Saving variables into EEPROM with an Arduino chip

I am working with an Arduino chip, with which I want to be able to change some parameters by sending it messages onto the serial port. For some reason I do a software reset of the Arduino program every 24 hours. So I was thinking of saving these…
user7320967
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How to code EEPROM with potentiometer in Arduino

I have A code I got from a site. I've been trying to add EEPROM in that code but I can't get it right. I tried adding EEPROM.write and EEPROm.read I also add another servo Can someone help me with it, Adding EEPROM in the code? Thank you in advance…
Coddie
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How to use Flash as EEPROM? What care need to be taken?

What are the steps to use internal Flash of the micro-controller as EEPROM instead of using external EEPROM. What cares need to be taken?
Amit Tandel
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