The code programmed for the ESP32 by using the Arduino IDE can be used directly on the Arduino UNO? I read a weather station article that was done with ESP32 but compiled with Arduino IDE, I have an Arduino UNO board, can I just copy the code from this project? https://www.instructables.com/STONE-HMI-ESP32-Weather-Station/
Cliff W. wrote: > can I just copy the code from this project? Lets say: you have fuel (code) for a big truck (ESP32) and you fill this fuel in a small moped (Nano). Will the moped (due to the same fuel) be able to handle the same load as the truck? > can I just copy the code from this project? Maybe, as long as the code does not use specific hardware of the ESP32. But after a short glance at the description of the Project: No it will not run on the Nano. But: why don't you simply try it?
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Edited by Moderator
Cliff W. wrote: > The code programmed for the ESP32 by using the Arduino IDE can be used > directly on the Arduino UNO? Usually not. There are many differences to consider: - 8 versus 32 bit - 16 versus 240 Mhz CPU clock - 2 kB RAM versus 320 kB RAM - Some ESP32 have two cores plus an ULP processor, the Arduino UNO has only one - The ESP32 has an operating system, the Arduino UNO does not - The ESP32 comes with many libraries that the Arduino UNO does not have A simple LED blinker program might be portable with 0 effort, but no regular application. In general you cannot simply replace a Board by another one with a CPU of a totally different architecture. The Arduino Framework is not able to abstract the hardware so much.
I can't find the complete ESP code on that site. You can compile that for UNO, if - the code doesn't use libraries that aren't available for the UNO (like Wifi or WebServer) - the code doesn't need more ram or flash space than an UNO can provide - the code uses library functions instead of accessing sfrs directly After that be aware, that the ESP is a 3.3V chip. UNO has 5V at its i/os.
>> can I just copy the code from this project? > Maybe, as long as the code does not use specific hardware of the ESP32. > But after a short glance at the description of the Project: No it will > not run on the Nano. > > But: why don't you simply try it? Yes, I tried it and there were some problems and I am trying to fix them. I am still completing the code because it is incomplete.
> Usually not. There are many differences to consider:
I also found the problem that there are some library files that I don't
have, and I need to fill these library files.
> You can compile that for UNO, if > - the code doesn't use libraries that aren't available for the UNO (like > Wifi or WebServer) > After that be aware, that the ESP is a 3.3V chip. UNO has 5V at its > i/os. Thanks for the suggestion, fortunately the required library file is not wifi but temperature sensor library file.
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