This can create issues like not recognizing the device. The device descriptor is something that stores information or you can say reads information. This makes it more frustrating as this error makes you unable to use it.Īlso, we can understand how devastating can be to encounter device request descriptor failed issue. USB flash, Pen Drive, USB cables, etc are the widely used things.
#Cleanflight failed to open serial port windows 10 portable#
USB portable nature makes it the most usable device. It prevents them from data transportation and hampers data accessibility. Many users have reported an error “Unknown USB device port reset failed” while using USB devices. Who can forget the USB devices in this digital era? It is the basic need for storing data and moving information among multiple users.
Is the procedure to do an upload of one of then and then press STOP after that then select the other and upload that one? It seems to work, but I’m trying to make sure that is right when doing operations on the two files in a project.Unknown USB Device Port Reset Failed : Ultimate Guide One last question: when working with a boot.py and a main.py file – Then: C:\Python37\Scripts\esptool.exe -port COM3 –baud 460800 write_flash –flash_size=detect 0 C:\ path>\esp8266-xxxx.binĪfter that, I can use uP圜raft – but you need to remember to press the ‘connect link’ button, then the > prompt appears. (I did not press “BOOT/FLASH” on the board – it seemed to cause problems if I did) Here’s what worked: To erase – From a windows command prompt do: (I use COM3) C:\Python37\Scripts\esptool.exe -port COM3 erase_flash I tried to follow in the book from page 324 – but had some problems.
Ok, what I did do was to use the pytool from the command prompt. The instructions starting from page 39 ask me to select the serial port – that was where the problem started, it kept giving that problem (open serial error…), so I couldn’t even start to erase and then program the MicroPython firmware – did I do something wrong here? I will explain what I did further below and have a few questions about the explanation in the book (maybe some others will find this helpful) Yes I had to flash the firmware, but this is where I couldn’t get past the error message originally. (On some occasions it helps to wait before trying again.) Make sure your device has suitable firmware and is not in bootloader mode!īytes read: b’\x00\x00\x00\x00\x00\x00\x00\x00′Ĭheck the configuration, select Run → Stop/Restart or press Ctrl+F2 to try again. I select under Port: Silicon labs CP210X USB to UART Bridge (COM3) and I get: UPDATE: I tried using Thonny – same problem: “open serial error, please try again” (by the way, the baud rate set in uP圜raft is 115200 – I tried making it 9600, doesn’t help) Modules: cjson,file,gpio,net,node,pwm,tmr,uart,wifiīut when I use uP圜raft IDE, and I select com3 (my realterm is now closed) – I get the connect error: I can prove using RealTerm terminal program that I can open COM3 when the ESP8266 is connected and I can even see the following start up text using RealTerm :(with baud rate 9600) – when I press the reset button.Ĭommit: c8037568571edb5c568c2f8231e4f8ce0683b883 I installed uP圜raft IDE (Win 10) and my ESP8266 com port enumerates as COM3. I bought the book Micropython programiming with ESP32 and ESP8266