Questions tagged [flash]
Flash memory is a type of memory available on the Arduino boards. It can be accessed from a program using PROGMEM directive to store data. For questions about using and accessing flash memory, use this tag.
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What can I do if I run out of Flash memory or SRAM?
According to the Arduino documentation, the ATmega328 has 32KB of Flash memory for the bootloader + uploaded sketch, and only 2KB SRAM for runtime data. The ATmega2560 has quite a bit more, totalling ...
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Using PROGMEM to store array of structs
I am hitting the limits of my arduino's SRAM and found that SRAM usage can be reduced by storing static stuff in flash memory instead of SRAM.
My project can (optionally) be built with an included ...
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Usbasp Arduino Uno Bootloader Flash Error - Win 10
I'm trying to flash an Arduino Uno using usbasp but i'm getting the following error,I have checked all the connection and voltage using multimeter but still this error:
Arduino: 1.8.8 (Windows 10), ...
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PROGMEM: do I have to copy data from flash to RAM for reading?
I have got some difficulties understanding the memory management.
Arduino documentation says, it is possible to keep constants like strings or whatever I don't want to change during runtime in ...
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Where can I find out how to make a hex file for arduino firmware?
I have followed this tutorial on flashing my Arduino R3 to turn it into a "USB keyboard", but the article doesn't explain how the hex works, it's just for granted. Where can I learn about how to make ...
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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 ...
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What are the FLASH_ARRAY/FLASH_TABLE macros in this code?
In this code for heating monitor, there appears to be macros called FLASH_ARRAY and FLASH_TABLE. I can't find any reference to them either in this code, Arduino, or on the Internet. What do they do?
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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 ...
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External Flash Memory for ATtiny85
I'm designing a lightweight circuit, but the ATtiny85 micro-controller I'm using to power it doesn't have nearly enough flash memory to store the code for the devices I'll have hooked up to it (It has ...
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Better method for PROGMEM data access with multiple indirection?
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This is a simplified recreation of personal learning project I have ongoing. My issue is in accessing data in flash, the path to which includes multiple layers of indirection. When the data ...
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Arduino LED flashes with one button press
I want the LED to flash when I press the switch once, but it keeps flashing. I tried the idea of just lighting the LED and keeping it lit with just one button press, so I wrote:
int led=13,button=12;
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Is there a good reference for Arduino Due memory architecture and usage?
It's been harder than I expected to find a reference source or usage guide.
There's a number of sources I've looked at along the road to this question:
The Due is listed here and here as having 512KB ...
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PROGMEM on Arduino Due (ARM Cortex M3)
I've been working with the PROGMEM function on my Arduino Uno and I'm thinking about changing to the bigger Arduino Due which is based on a ARM Cortex M3 processor instead of the AVR processor on the ...
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esp8266 OTA issue
I have uploaded the BasicOTA sketch in Esp8266-12e.
I am written one program, when i try to upload it first time in Esp using the OTA port it gets uploaded successfully, but when i try to upload any ...
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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 ...
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