MicroPython Forum

What is the safest option for reading and writing the configuration file? I am afraid that when saving, for example, if there was no power, the file might not be saved completely ...

The next thing is the format ... Maybe json?

Ok sorry, my mistake. Its work fine !

Yes, I do it exactly, it works when I start from one class, but when I do mount in main.py, while open and write in async def doesn't work anymore.

Why when I mount the SD in start boot.py or main.py I can't write to a file from another module or from task async? Do I have to grant any permissions?

main.py

Ok, I went back to the topic of replacing FLOAT_IMPL_DOUBLE

I compiled together with idf4 - and amazingly everything works very quickly.

I just have a question for you, what are the disadvantages of this solution?

I need to read the current point where auto-rc is located. Next, I want to calculate the distance between the car and the previously set waypoint.

Ok, but will it allow me to do calculations later like in my functions which I gave above?

pythoncoder wrote: ↑

Mon May 25, 2020 6:20 am

I don't know your application. Is worldwide coverage needed? If not, you could express lat and long relative to a local datum for calculations, converting to absolute values only for final display.

Can I have an example please? because I don't quite understand. Thanks.

Thanks for reply. I am using this module, it needs to get more precision than just 5 decimal digits in dd - decimal degress formatt. https://github.com/inmcm/micropyGPS/blob/master/micropyGPS.py The problem is that after receiving the result I have to calculate it further, e.g. the distance to anoth...

I needed to get the accuracy to 6 decimal numbers, I replaced: #define MICROPY_FLOAT_IMPL on (MICROPY_FLOAT_IMPL_DOUBLE) and compiled micropython for port esp32. Everything works. >>> 1/3 0.333333333333333 The problem is the load on the processor, the modules load much slower. Is there another way? ...