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by stefanru
Sun May 03, 2020 9:31 am
Forum: Troubleshooting
Topic: Lost Network Connection
Replies: 18
Views: 527

Lost Network Connection

Hi, i have a raspberry pi3 b v1.2. I have the original Raspberry power supply. My raspberry is running on ssd connected to usb. I use "Raspbian GNU/Linux 10 (buster)". I never had problems and the raspberry was running for about 2 years. In the last time i have roughly once a week a network outage. ...
by RDK
Sat May 02, 2020 3:15 pm
Forum: Advanced users
Topic: Serial Port traffic duirng Boot-up
Replies: 13
Views: 847

Re: Serial Port traffic duirng Boot-up

Thanks for the idea. I have this serial to USB adapter (DSD TECH USB to TTL Serial Adapter with FTDI FT232RL Chip) which I think is what you were suggesting. The problem is that I'm not sure what/how to use it to debug this situation. Do I need another Pi to listen to this ...
by graf_eberstein
Wed Apr 29, 2020 4:14 pm
Forum: Ubuntu
Topic: [URGENT] Adding Flash plug-in to Chromium - Ubuntu 19.10(aarch64) + MATE on RPi4
Replies: 26
Views: 1345

Re: [URGENT] Adding Flash plug-in to Chromium - Ubuntu 19.10(aarch64) + MATE on RPi4

... fotoxx/eoan 18.07.2-1 arm64 easy-to-use digital photo editor fotoxx-common/eoan 18.07.2-1 all easy-to-use digital photo editor - common files ftdi-eeprom/eoan 1.4-2 arm64 Tool for reading/erasing/flashing FTDI USB chip EEPROMs get-flash-videos/eoan 1.25.99.03-1 all video downloader for various ...
by trejan
Mon Apr 27, 2020 12:26 pm
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

... editing the udev file and insert the S/N of the replacement device so it will be recognized on plug-in. As mentioned above, you can reprogram the FTDI serial number + description using the FT_PROG tool. Set the serial numbers to something fixed like 1000 and 2000. You can then setup your udev ...
by Bosse_B
Mon Apr 27, 2020 10:06 am
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

lrwxrwxrwx 1 root root 13 Apr 27 07:07 usb-FTDI_US232R_FTFK085Y-if00-port0 -> ../../ttyUSB1 lrwxrwxrwx 1 root root 13 Apr 27 07:07 usb-FTDI_US232R_FTFK0869-if00-port0 -> ../../ttyUSB0 So if I can read this S/N in my code then I could presumably ...
by jojopi
Mon Apr 27, 2020 9:32 am
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

lrwxrwxrwx 1 root root 13 Apr 27 07:07 usb-FTDI_US232R_FTFK085Y-if00-port0 -> ../../ttyUSB1 lrwxrwxrwx 1 root root 13 Apr 27 07:07 usb-FTDI_US232R_FTFK0869-if00-port0 -> ../../ttyUSB0 So if I can read this S/N in my code then I could presumably ...
by Bosse_B
Mon Apr 27, 2020 7:05 am
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

... it is a very good start! PS: We have built a PC board to handle digital outputs from the Windows system via a serial link and this board uses an FTDI chip so I expect it will have much the same fingerprint when inserted and can be set to use the same naming convention on Linux via the udev file. ...
by Bosse_B
Mon Apr 27, 2020 5:16 am
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

OK, first, lsusb -t does not do the trick: $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 3: Dev 5, If 0, Class=Vendor Specific Class, Dri...
by scruss
Sun Apr 26, 2020 10:37 pm
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

If you use the FT_PROG tool on the FTDI site then you can change the name + serial number. That will show up in /dev/serial/by-id/ as something like usb-FTDI_FT232R_USB_UART_12345678-if00-port0 -> /dev/ttyUSB0 They should be unique out of ...
by trejan
Sun Apr 26, 2020 10:16 pm
Forum: General discussion
Topic: How to detect individual USB-RS232 device tty number?
Replies: 16
Views: 709

Re: How to detect individual USB-RS232 device tty number?

... -> /dev/ttyUSB0 the 4 you see is port 4 on the Pi. It is better to use the serial number that FTDI chips have though. Is there some serial number or the like that can be used to identify each USB cable uniquely? If you use the FT_PROG tool on ...
by dorin1234
Sat Apr 25, 2020 4:09 am
Forum: Advanced users
Topic: Fix port/path for USB devices
Replies: 2
Views: 1800

Re: Fix port/path for USB devices

... serial devices are mapped after reboot. I was looking for a way to lock the ttyUSBx assignments and I found your post. My configuration is with 3 FTDI USB-to-serial devices connected to a hub. The devices being almost identical, the mapping changes randomly every boot. In this moment I have a ...
by DougieLawson
Mon Apr 20, 2020 4:21 pm
Forum: Advanced users
Topic: Moving Linux Kernel to 5.4
Replies: 418
Views: 55989

Re: Moving Linux Kernel to 5.4

... from 4.19.115 to 5.4.32 without so much pain (except that RPi has no keyboard and the USB is full of the WiFi dongle and I need to find my USB FTDI/Serial so I can operate the wee beastie (so many obstacles)). That's probably a project for tomorrow. I've nothing in the diary.
by brlpez
Fri Apr 10, 2020 10:01 am
Forum: Advanced users
Topic: CDC class in Raspberry Pi 4
Replies: 2
Views: 221

CDC class in Raspberry Pi 4

... device. The purpose is to emulate multiple COM ports from Pi 4 (device mode) but using an USB cable, not converting to serial communication via FTDI chip. If it is possible, could anyone give me some starting points?. Thank you very much. BrLpez
by khadmi
Wed Apr 08, 2020 4:21 am
Forum: Compute Module
Topic: WARNING: CPU: 2 PID: 0 at lib/timerqueue.c:77 timerqueue_del+0x88/0x8c
Replies: 4
Views: 468

WARNING: CPU: 2 PID: 0 at lib/timerqueue.c:77 timerqueue_del+0x88/0x8c

Dear All, I am getting kernel error . Can somebody help me to know the root cause of this warning message. I use kernel 4.14.50-v7 , This issue is rare ,found sometime , I want to know the actual cause . I am attaching logs below :) :) [ 9087.719431] ------------[ cut here ]------------ Apr 4 08:42:...
by Bluebird
Mon Apr 06, 2020 10:03 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB to serial
Replies: 38
Views: 1836

Re: USB to serial

Thanks, just as a confirmation, do you think this one will work?
https://nl.farnell.com/ftdi/usb-rs232-p ... sb%20rs232
by CountBenula
Sat Apr 04, 2020 7:34 pm
Forum: Other projects
Topic: OLA not outputting DMXUSB
Replies: 0
Views: 103

OLA not outputting DMXUSB

... and configure my universes but I don't get the option to output to my Enttec OpenDMX. It is enabled in config, tried with both OpenDMX config and FTDI version. What am I doing wrong? Using ArtNet as my input.
by hansotten
Sat Mar 28, 2020 4:14 pm
Forum: Advanced users
Topic: Use micro USB as UART on PI Zero for external wifi module
Replies: 4
Views: 343

Re: Use micro USB as UART on PI Zero for external wifi module

Using a USB serial adapter is required here and those works fine on the RPi. Nearly all types (FTDI, CH340, PL2303) are autodetected and deliver a ttyUSB0 device. Check the voltages of the D1 Mini UART and choose your USB serial adapter if it needs 3.3V or 5V. And do not ...
by neilgl
Fri Mar 27, 2020 4:17 pm
Forum: Beginners
Topic: Use FTDI wire between a sensor and the raspberry pi 4
Replies: 1
Views: 83

Re: Use FTDI wire between a sensor and the raspberry pi 4

Are you using python (python3) and pyserial as shown in the other post?
by wizzy15
Fri Mar 27, 2020 11:49 am
Forum: Beginners
Topic: Use FTDI wire between a sensor and the raspberry pi 4
Replies: 1
Views: 83

Use FTDI wire between a sensor and the raspberry pi 4

... which consist to read data from a sensor and the final goal is to use the raspberry as multiplexor to read 8 sensors. For that i have to use a ftdi wire. I read some topics on this forum but I didn't find what i need. So i want to connect the ftdi wire fromthe raspberry by the usb port and ...
by Joel_Mckay
Sat Feb 29, 2020 5:11 am
Forum: Automation, sensing and robotics
Topic: DMX programing for raspberry pi
Replies: 1
Views: 385

Re: DMX programing for raspberry pi

If I recall correctly, there are ways to modify the FTDI USB-to-serial transceiver adapter modules to generate the necessary timings with special driver software. I do not know if anyone built a wrapper script for python yet, but the DMX protocol itself ...
by hippy
Wed Feb 26, 2020 10:49 am
Forum: Advanced users
Topic: Control an RS232 HDMI Switch
Replies: 11
Views: 568

Re: Control an RS232 HDMI Switch

Only drawback is if you get a cable with a chip which Linux doesn't have a default driver for. You should be okay with FTDI, Prologic P2303, CH340, no matter how cheap, though you need to be aware of counterfeit chips.
by sonicmouse
Wed Feb 26, 2020 1:17 am
Forum: Advanced users
Topic: Control an RS232 HDMI Switch
Replies: 11
Views: 568

Re: Control an RS232 HDMI Switch

To make sure I am on the right track, these should be the options I should be looking at: https://ftdi-us.shop/products/chipi-x10 https://www.amazon.com/Plugable-Compatible-RS-232-DB9-Connector-Prolific/dp/B00425S1H8 https://www.amazon.com/Sabrent-Converter-Prolific-Chipset-CB-DB9P/dp/B00IDSM6BW ...
by hippy
Tue Feb 25, 2020 9:22 pm
Forum: Advanced users
Topic: Control an RS232 HDMI Switch
Replies: 11
Views: 568

Re: Control an RS232 HDMI Switch

Should work with any USB-to-RS232-9-way-D cable. Prolific, FTDI, CH340 chipsets.
by ElEscalador
Fri Feb 21, 2020 8:41 pm
Forum: Beginners
Topic: How do I read serial via GPIO pins
Replies: 4
Views: 271

Re: How do I read serial via GPIO pins

... Try /dev/Serial0 or /dev/Serial1...but do read the docs for configuration info. You can also use a USB to TTL converter - usually whats called an FTDI and use the USB from any computer not just a Pi.
by jamesh
Wed Feb 19, 2020 10:37 am
Forum: Advanced users
Topic: 4.19 kernel 64 bit support - please report issues here
Replies: 53
Views: 15737

Re: 4.19 kernel 64 bit support - please report issues here

I am using Raspberry pi 3b along with Xbee and Sixfab 3G/4G base sheild. Receiving below error in dmesgs. ftdi_sio ttyUSB0: failed to get modem status: -32 usb usb1-port1: disabled by hub (EMI?), re-enabling... and also getting this WARN::dwc_otg_hcd_handle_hc_fsm:2462: Unexpected IRQ state on FSM ...

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