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USB not detected for PIC18F4550 chip
Posted: Fri Dec 20, 2024 12:48 pm
by karthickefy
Hi Benz,
I developed a code for PIC18F4550 to connect USB serial to control the ports through Serial Command. But I couldn't install the Flowcode USB serial driver (.ini), and the Device manager shows an unknown USB. I installed the USB Serial Driver from the Flowcode Example page, but I still faced the same problem. Below is the picture. Please help me find where I made the mistake.
Thanks,
Karthick
Re: USB not detected for PIC18F4550 chip
Posted: Fri Dec 20, 2024 2:14 pm
by medelec35
Hello.
The issue is with windows not excepting unsigned drivers.
There is information on how to install signed drivers but you need to that at your own risk.
Re: USB not detected for PIC18F4550 chip
Posted: Thu Jan 09, 2025 11:31 am
by el_mma
theese config words worked for me, with an external OSC 20Mhz, Flowcode V5;

- config Words PIC18F4550 USB and external OSC.png (162.32 KiB) Viewed 1046 times
was succesfully recognised from windows 11 as universal USB Serial converter;
my project is simple but i dont find some working examples about,
i need to activate and deactivate outputs from an window on PC...i am studying this;
for PC i tested without succes (yet) Flowcode V10 App Developer(recognised COM from USB Pic18f4550 but didnt read or send nothing);
Re: USB not detected for PIC18F4550 chip
Posted: Thu Jan 09, 2025 1:35 pm
by medelec35
There are PC Developer (formally known as App Developer) & Web Developer examples
here
They don't use PIC18F4550, they use ESP32 and Arduino Uno.
They might be able to help you to get going.
Re: USB not detected for PIC18F4550 chip
Posted: Thu Jan 09, 2025 3:02 pm
by el_mma
you are right, i haven't found any project that uses PIC18F4550/2550 to inspire from it; only with uses ESP32 which i'm not familiar...yet,
i'm already convinced that i should go for ESP32;