Questions tagged [serial-console]

The serial console is a text entry and display device for system administration connected through a serial link.

21 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
96 views

How can I reconfigure the UART on the fly?

I have a Pi Zero with Raspbian which I'd like to use as a logger device with WiFi (it's not a W, I'm using an external WiFi stick). I need the UART to communicate with a microcontroller but sometimes ...
2
votes
0answers
415 views

Lost Serial on Pi3 running Pixel

I have just upgraded to the latest OS Raspbian Pixel and my serial connection has stopped working. I know that the hardware is configured correctly as it worked pre-update. I have updated to the ...
2
votes
0answers
185 views

When connecting with GNU Screen (patched version) RPi reprompts for password in kind of loop

I have a raspberry pi (running raspian) and want to connect to it with the Console Cable. I succeeded - and I tried twice, because it had worked before, but malfunctioned the second time (this is a ...
1
vote
0answers
26 views

Why are my AT commands inconsistent?

Devices: RPi3B+, USB to TTL CH340, SIM800C GSM module Here are the connection between the USB to TTL and GSM module respectively 5V-VCC, TxD-RxD, RxD-TxD, GND-GND Then I attach this USB to TTL to ...
1
vote
0answers
1k views

How to login compute module via serial port?

I tried to login to compute module 3 io board from a USB serial port in my PC, but PUTTY just hangs there. Following procedures have been made: raspi-config -> interface options -> serial port -> ...
1
vote
0answers
340 views

rfcomm service not working for Bluetooth over serial

I'm trying to connect with a terminal to my Raspberry Pi over Bluetooth, however with my current configuration (which is what I have found in numerous places online) when any device pairs and connects ...
1
vote
0answers
32 views

How to stop yellow and grey boxes on serial console during boot?

I have a Raspberry Pi Zero W running Raspian Stretch. When it boots, it prints grey and yellow square characters to the serial console before displaying "Last login ..." and the login prompt. I ...
1
vote
0answers
2k views

Can't Login to Pi0 console from Pi3 B+ via UART Serial USB-TTY Adapter

I am new to RPi's so bear with me please: I am trying to log in to the Pi0 console via sudo screen /dev/ttyUSB0 115200 but I just get a blank screen. Ouput of dmesg | grep tty: [ 0.000000] ...
1
vote
0answers
2k views

How to connect to Raspberry Pi from linux PC with serial connection

I've bought a Raspberry Pi 3 model b and a new design of Berryclip which is supposed to include the USB to serial adapter as an additional microUSB port for the Raspberry. Now I've been told that the ...
1
vote
0answers
1k views

Send data from arduino ble to raspberry pi 2 as serial over bluetooth

Im trying to send data from an arduino with integrated ble (bluno nano from DFRobot) to a raspberry pi 2 which has an hm10 ble module connected to its serial0 gpio14 and 15 pins. I link the devices ...
1
vote
1answer
1k views

Serial console produce garbage even with dtoverlay=pi3-disable-bt

I'm using 2016-09-23-raspbian-jessie and have done all the updates steps everyone suggests (apt-get update ; apt-get upgrade). After that (and enable_uart=1) didn't work I added dtoverlay=pi3-disable-...
1
vote
0answers
295 views

xterm-256color behavior on Mac OS X

I have succeeded getting a minimalist connection between my Mac and my Raspberry Pi (RPi). With one USB-Serial adapter cable, I login to my RPi and do command-line work, even using Vim to edit files, ...
0
votes
0answers
23 views

Serial console to Pi 4b shows no output

I am trying to connect to the Pi 4b 8Gb via serial console, however, although I can connect to the serial adapter itself, I can't seem to get no output at all from it, nor using default raspbian ...
0
votes
0answers
13 views

no getty on ttyS0 when booting from a USB drive

I have customized a headless raspberry pi OS (Dec 2020 version). I performed all customizations while running the OS from a microSD card. As a last step , I dd the microSD to a USB drive. The system ...
0
votes
0answers
56 views

Activate SPI & I2C, deactivate serial console programmatically

To enable I2C and SPI interfaces and deactivate the serial console, you can use the raspi-config tool which works as expected. As far as I am informed, for SPI and I2C activation, the tool is just ...
0
votes
0answers
376 views

Modify cmdline.txt

I have raspberry-pi cm3 image using yocto poky warrior branch. I was trying to communicate using ttyAMA0 serial port. I was able to do that by first manually modifying cmdline.txt from console=...
0
votes
0answers
30 views

Why can't I TTL serial log to my computer or connect to WiFi with my Raspberry Pi Zero W

I haven't used my zero in about a year and I am trying to connect it to my new WiFi with no real success. I tried: -Editing the wpa_supplicant.config file and adding a shh file but when I check the ...
0
votes
0answers
261 views

How can I disable the serial debugging console?

I am using raspberry pi 3b model with android things. I need to attach GPS module NEO6mv2 with the pi. How can I disable the serial debugging console?
0
votes
0answers
180 views

raspberry pi and ltc 2873 cufd (RS 232 and RS 485)

I have a raspberry pi compute module 3 on an I/O board in which gpio 12 is contolling the mode in ltc 2873. If it is ground it will be working in the RS 232 mode. so if I have to write something into ...
0
votes
1answer
49 views

Modifying what is shown in the uART

I am working on establishing user communication (one may say a basic UI) from the user's PC to my Raspberry Pi, where the RPI would accept pre-defined commands from the user via uART and then process ...
0
votes
0answers
812 views

How to use UART for console and other UART peripheral for expansion boards on 3 model b v1.1

I don't have SSH access or a dedicated external monitor and keyboard for this raspberry pi, so I would prefer to have serial access, which I have working with a device-tree overlay. The thing is, I ...