Questions tagged [uart]
The uart tag has no usage guidance.
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How to get root-Access and/or update/extract firmware via UART
I would like to try to equip my non-specific China-Wall-Brick-WiFi-Router with root access and update it if necessary.
Here is a sample image of the device:
The problem is: The device has no official ...
- 101
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Reading the output from arduino slower than it produces the output: what is the buffer size?
I have two different boards with Atmega16U2 (Uno) and ch341 (Nano). They are not genuine actually, but it doesn't matter here I think.
I was asked to look at some code which didn't work as expected. ...
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RS232 (FT232R) - Different TX voltages with the same adapter under Windows and Linux
I have a USB to RS232 adapter cable (FT232R) that I use with Windows and Linux. Therefore I use a Python script with pyserial.
Under Windows, the lowest voltage during a data transfer is -6.2V and the ...
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Armbian enable UART2 for TX/RX
I'm trying to use the UART1 and UART2 of my device (a NanoPi NEO) to read serial data.
So far, UART1 i fully functionnal and I can read and transmit data through /dev/ttyS1.
I've enabled UART2 using ...
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how can I make socat simulate unplugging a serial device
I have this test program
import sys
for line in sys.stdin:
print(line.strip())
print("DONE")
if I get it to print out lines from a real device (an FTDI)
python3 demo.py < /dev/...
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Why is the serial communication with this device failing?
I have two serial to USB adapters connected to my computer, each one is connected to a microcontroller.
What I want to do is send commands to each microcontroller through UART (I'm using minicom), but ...
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How do I tell a /dev/ttyUSBN device that it's a master?
Using the terminology of ptys, the slave end connects to the CLI program and the master end connects to the user / keyboard / terminal emulator.
I have an FTDI USB UART connecting my laptop's USB port ...
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505
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How to make use of an M2 PCIe card UART interface?
I have a motherboard (AIMB-218) with an M2 E key slot and according to the documentation of the said motherboard the M2 slot supports UART.
I am trying to use a wireless module (Wi-Fi + Bluetooth), ...
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How to integrate radio modules to Linux networking stack
I want to know whether it is possible to add a radio link (point-to-point) to the link layer of the networking stack on Linux so that programs can communicate using TCP/IP.
Assuming the only way to ...
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Minicom: send string when newline is detected
I have 3 different USB-to-UART FTDI cables and use minicom to debug some device.
My problem is only one of these cables can buffer characters until I send a newline. Eg when I type the string "...
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Reading /dev/ttyS4 from a BeagleBone running Debian 10 not what is written
I am pulling my hears trying to make ttyS4 up and running on a Beaglebone black.
I have set up UART4 in my /boot/uEnv.txt (see it at the bottom of my question).
On the Beaglebone I have the comms cape ...
- 163
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381
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Trouble finding on-board serial port via UART: "-bash: echo: write error: Input/output error"
I have an old tv box that I wiped recently with Linux. I would like to connect a device to its onboard UART pins, to which I've soldered wires that connect to a UART adapter on my PC. I opened up a ...
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Manually installing drivers on Linux Mint
I am currently trying to install a driver through terminal. It is for the USB UART XR21B1411 serial port adapter. I installed it in the past, but cannot remember how I did it. Here is a link to the ...
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604
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Enabling second UART in U-Boot
I am working on a project with SAMA5D3-xplained board with CortexA5 processor and embedded Linux. I would like to send and receive some data via UART during U-Boot is running and before a kernel is ...
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The linux boot message in dmesg doesn't output to uart
My problem is my linux is success for boot but there is no more boot message output to uart(ttyPS0) after "Starting kernel...".
As you can see in the pic, there is a lot of boot message in ...
