Eeprom update

Thank you for the explanation. That makes clear why there has to be a commit on the ESP. Would I be better of using spiffs? That might change when I add Ethernet to the Mega though. I am unclear about a number of things with regards to spiffs though:.

Spiffs is being deprecated and at some point will be pulled out so you would ce better off looking at LittleFS or other alternatives. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 1 year, 6 months ago. Active 1 year, 1 month ago. Viewed 19k times. Thank You so much for helping me in advance Improve this question. Add a comment.

Active Oldest Votes. Improve this answer. This worked for me but I had to use the armhf. When it comes to this architecture level of Linux I just zone out. I used Ubuntu I updated my answer. Yeah, I'm on It was getting hung up trying to install libc6:arm But I had libc6:armhf packages installed so that led me down that path.

I don't know if I need to use that --add-architecture command or if there's any downside of being on armhf as opposed to arm The packages in the URLs I mentioned are 64 bit.

You need the 32 bit packages. I would recommend a MicroSD rather than any USB device that you keep for now for firmware update use only, since the USB boot functionality altogether is still a somewhat work-in-progress, and things can get a bit wonky at times, especially if you're installing cutting-edge updates on the firmware side. In any case, read and proceed with the steps ahead as needed. The put function writes out a set of bytes using the update function.

In addition it measures the size of the data type being used to write out the correct number of bytes. You can use this function to write out an char, int, long or float type object without knowing the number of bytes used by the type object. So this function is portable across different compilers that use different type sizes. The really useful point about this function is that it can also write out your own defined types e.

This is especially useful for a system where you are trying out different options and you don't want to recompile each time just to change a few control parameters! Just attach a push button connected to ground and pin 5 of the Arduino. To retrieve the values simply press the reset button on the Arduino and these same numbers are displayed having been read from the EEPROM. The following program is very similar to the above but uses a struct variable instead of lots of different ones.

Note how you could use multiple struct variables in the program since pointers are used to display the contents of the struct variable 'StoreData'. For accurate timing use the write function you would write your own version of put that does not perform a read. You are probably wanting to initialise it. One way is to perform a write to EEPROM during normal program operation - or use a button input to indicate rewrite as in above programs - but choose another button.

You have to to write to it as above or use the chip erase function during serial programming. The advantage of an SD card is that it is huge Giga Bytes. The disadvantage of an SD card is that it is slow. The SD card takes time to write - hence the need for a double buffer.