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destroyedlolo
l33t
Joined: 17 Jun 2011
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Location: Close to Annecy (France)
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 Posted: Fri Oct 06, 2017 9:44 pm Post subject: [Corrected]Need some help to connect to ESP8266-12e |
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Hello,
I need some help to connect an ESP8266-12e as USB2Serial.
As per my readying, I understood I have to add USB CP210x family of UART Bridge Controllers. But with this new kernel, I still don't see anything related to USB serial.
When I plug the ESP, /var/log/messages are displaying
| Code: | Oct 6 23:36:20 pset kernel: usb 3-2: new full-speed USB device number 3 using xhci_hcd
Oct 6 23:36:20 pset kernel: usb 3-2: New USB device found, idVendor=1a86, idProduct=7523
Oct 6 23:36:20 pset kernel: usb 3-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0
Oct 6 23:36:20 pset kernel: usb 3-2: Product: USB2.0-Serial
Oct 6 23:36:20 pset mtp-probe[3491]: checking bus 3, device 3: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2"
Oct 6 23:36:20 pset mtp-probe[3491]: bus: 3, device: 3 was not an MTP device
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What I'm missing ?
Thanks
Laurent
Last edited by destroyedlolo on Sat Oct 07, 2017 9:22 am; edited 1 time in total |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54237
Location: 56N 3W
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| Posted: Fri Oct 06, 2017 10:25 pm Post subject: |
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destroyedlolo,
Searching for the Vendor and Device ID, google says its a
| Code: | | < > USB Winchiphead CH341 Single Port Serial Driver |
Search for USB_SERIAL_CH341 in meunconfig.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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destroyedlolo
l33t
Joined: 17 Jun 2011
Posts: 846
Location: Close to Annecy (France)
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| Posted: Sat Oct 07, 2017 9:24 am Post subject: |
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Yep, you're right.
Which source do you use for this ID->module ? Because I got only CP210x responses, which doesn't work 
Thanks |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54237
Location: 56N 3W
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| Posted: Sat Oct 07, 2017 9:49 am Post subject: |
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destroyedlolo,
Google | Code: | | idVendor=1a86, idProduct=7523 linux |
1a86:7523 Linux often works too.
The 5fh hit is [ubuntu] [SOLVED] Clone Winchiphead USB/Serial cable (1a86:7523 ...
which is your vendor and device ID.
Threre is another way ...
| Code: | roy@NeddySeagoon_Static ~ $ cd /usr/src/linux
roy@NeddySeagoon_Static /usr/src/linux $ grep -R -i 1a86 ./ |
includes
| Code: | ...
./drivers/usb/serial/ch341.c: { USB_DEVICE(0x1a86, 0x7523) },
./drivers/usb/serial/ch341.c: { USB_DEVICE(0x1a86, 0x5523) },
...
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That's your vendor ID and device ID in the first line quoted, so yo need the file ./drivers/usb/serial/ch341.c in your kernel, as it will bind to your device.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
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destroyedlolo
l33t
Joined: 17 Jun 2011
Posts: 846
Location: Close to Annecy (France)
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| Posted: Sat Oct 07, 2017 10:34 am Post subject: |
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Ha, ok : I skip the Unbuntu link.
Another question in my mind for years : when I'm installing a new machine, I get its configuration using lspci -n then copy/past in http://kmuto.jp/debian/hcl/ to retrieve related kernel configuration.
Now, when I was playing with NetBSD, I had a tool that did the same for me and provided a kernel configuration suiting the machine hardware.
Do we have the same on Gentoo ? (would be perfect if it run on x86 as well as ARM  ) |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54237
Location: 56N 3W
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| Posted: Sat Oct 07, 2017 11:48 am Post subject: |
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destroyedlolo,
I wonder how the BSD tool did that. On linux, you usually make a generic, fully modular kernel, then only use the bits you need, which is determined at run time.
This can leave a lot of junk loaded as modules can't always tell if they are needed.
Its easy for hardware drivers. They can look round for the hardware and unload if none is found ... most don't.
What of things like loop, or USB devices that are not connected at boot?
I'm not aware of a tool like that for Gentoo.
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NeddySeagoon
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