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Questions tagged [serial-console]

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

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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 ...
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35 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 -> ...
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1answer
138 views

Extracting or storing a serial number during production

I am designing a product for which the Raspberry Pi is part of the system. It is basically used as the bridge for BLE sensors to communicate with cloud servers. Basically, each time my product is ...
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1answer
194 views

Control RaspberryPI 3 via Serial/GPIO

So I'm working on a bit of a little project with a PI for work. I'm making the PI into a little portable NAS where i can connect it to a network and on boot, it will email me its IP Address (if it ...
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147 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 ...
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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 ...
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2answers
127 views

Debricking WNR2000v3 with Raspberry PI and a serial connection?

I don't actually need to debrick this WNR2000v3, I'm just trying to learn how to connect to an embedded device using a serial connection to see if I can do it. I believe I have setup the wires so ...
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2answers
213 views

Disable UART such that it will not be on during the boot process, but only after

I am using UART sensors that do not allow the RPI to finish the boot when the serial console and the bluetooth are on. I did disable them using the dtoverlay=pi3-disable-bt in /boot/config.txt and ...
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1answer
75 views

Can I use the USB connector to transfer plaintext data (via serial console / socket) to a linux PC?

I have a script on my pi that currently simply outputs some numbers from a sensor to the console, several times a second. I am using this for a demonstration, and need a way to reliably (not over the ...
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175 views

Rapsberry pi Zero W headless: enable getty@ttyGS0.service without prior access

In an attempt to be able to controll my raspbian raspberrypi zero w boaerd from my computer I tries too use ssh over usb as the following links shows: https://www.thepolyglotdeveloper.com/2016/06/...
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674 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] ...
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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 ...
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2answers
140 views

How to connect to the pi over serial [duplicate]

So I am trying to connect to my pi over serial. I have never used serial, so I hope what I have is fine. I can't order anything new. I have a USB to serial adapter (RS232 I think, you can check the ...
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1answer
263 views

Direct connect router UART 3.3v to pi3B UART 3.3v and use debug console

Can I use a Raspberry PI model B to interact directly to a router debug console (undocumented) via "screen". TX <-> RX RX <-> TX GND <-> GND # screen -L /dev/ttyAMA0 115200,-...
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1answer
412 views

Can you hot-plug a USB to TTL Serial Cable to the Raspberry Pi?

Generally speaking, hot-plugging devices/sensors onto the GPIO pins of a running Pi is a potentially device/Pi damaging bad practice. But does that hold true for a PL2303TA chipset-based USB to TTL ...
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1answer
2k views

Connect PC to Rpi3 using serial connexion in puTTY

As specified in the title, I try to connect my Rpi 3 running Raspbian Jessie Lite from 2017-07-05 to my Windows 10 PC using puTTY on serial mode with this cable. I tried to follow a few tutorials ...
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1answer
33 views

RPI3: how can I use the UART to communicate with a non-console device?

I need to communicate via the RPi3 serial port with a device that only understands hex commands. I have read and implemented the steps shown in: How do I make serial work on the Raspberry Pi3 and my ...
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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 ...
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2k views

Minicom serial port test not working

I have two Serial to usbs, connected to a null modem and coming back into USB0 and USB1 on my raspberry pi... while trying to test/configure these serial ports with minicom I am running into an error....
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302 views

Using USB to serial port on Raspberry Pi

Can I use a USB to serial cable on my Raspberry Pi? I would like to use it by plugging in the USB cable to my Raspberry Pi, connecting the serial end to a null modem, then plugging another serial to ...
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716 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 ...
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2answers
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Debugging USB OTG Serial on the Pi Zero W

I have a whole bunch of Pi Zeros and Zero Ws. I've flashed SD cards with the latest Raspbian Jessie Lite, and I've followed the instructions at https://gist.github.com/gbaman/...
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124 views

uart baud rate bounces

I'm trying to set baud rate on ttyAMA0 with this command: stty -F /dev/ttyAMA0 9600. After that I'm checking current baud rate with this: stty -F /dev/ttyAMA0 -a and getting different values at ...
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1answer
279 views

Can the raspberry pi be used as a serial converter to debug other boards?

I have a board running linux and it doesn't boot when connecting a specific hardware, the board doesn't even load the kernel so i have to use a serial cable to see what's causing the issue, currently ...
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1answer
347 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 ...
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1answer
2k views

Control Raspberry Pi 3 through bluetooth connection

I have a raspberry Pi3 with bluetooth connection to my MAC computer. I need to control raspberry from MAC using bluetooth like serial interface (uart) Is there any way to do that? I only see using ...
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1answer
1k views

Unable to open serial connection to modem

I posted a thread on the raspberry pi forums, but I believe my problem is too obscure to be helped there. Info below: Hello, I absolutely an unable to get my raspberry pi to open a serial connection ...
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0answers
367 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 ...
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2answers
1k views

No communication between GPRS module RaspberryPi Zero serial GPIO ports

I am trying to use my RaspberryPi Zero to communicate with an A6 GPRS module (http://www.inkocean.in/gprs-a6-module-sms-board-gsm-gprs-wireless-data-transmission-over-sim900a) Drawing of physical ...
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1answer
841 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-...
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1answer
972 views

Raspberry Pi 3 with Python and XBee S2 Pro

I used to use the RPi 2b and had no problems with my Xbee codes but this new RPi3 is killing me. I can not read from my XBee model S2 Pro anymore. Following instructions from other forums I have ...
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1answer
1k views

TXD0/RXD0 to D+/D-

I am working on a project involving serial communication with the Raspberry Pi (for which I was using a USB to serial cable). I'm currently building the final version of the hardware, and I'm ...
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1answer
458 views

Raspbian system-wide hang after using “reset” and logging-off from the serial console

I'm looking for an explanation and/or a solution for resolving an issue when connecting to the Pi by its serial console connection: After using the "reset" command at any point during a session - a ...
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1answer
1k views

Change default console TERM from vt102 to xterm?

When connecting to the Pi by the serial console, I'd like to have the default TERM be xterm, rather than the current default of vt102: pi@raspberrypi:~$ echo $TERM vt102 pi@raspberrypi:~$ tty /dev/...
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2answers
936 views

Disabling serial console/kernel messages on Pi B 2 while still being able to write/read to serial port

I would like to disable the serial console and boot up messages while still being able to write to the port. I have tried disabling the port in raspi-config. This disables the console and the kernel ...
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1answer
99 views

Journaling Error while connecting with TTL USB cable

I am currently trying to connect to my Raspberry Pi B+ from my Macbook Pro (El Capitan) using the following TTL USB cable: https://www.pi-supply.com/product/usb-ttl-serial-cable-debug-console-cable-...
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160 views

USB to Serial console communication using Cable [duplicate]

I am trying to communication between my computer and a Raspberry Pi 3 using a USB to TTL cable. I am receiving a lot of garbage through the communication and this is making it impossible to use the ...
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1answer
326 views

How tp get USB to USB UART console without linux

I'm trying to develop my own OS kernel from scratch for the raspberry pi and I want to be able to debug my code from my computer over putty through a cable. Now I've did a little googling and found ...
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1answer
5k views

HC-05 Bluetooth with Raspberry Pi

I am currently trying to make my HC-05 Bluetooth Adapter (CZ-HC-05 gomcu) work with my Raspberry Pi (B+ V2, lates Raspbian freshly installed). I used this Tutorial: A cheap Bluetooth serial port for ...
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2answers
5k views

Garbage on Raspberry Pi console

Hey! There's a solution under the question, go look... I'm using the Adafruit USB to TTL connector purchased from Microcenter. I have two separate parts, and have tried them both. I've wired it 6/...
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3answers
2k views

How to free the UART pins of Raspberry pi B+ from acting as a kernel console?

I have a Raspberry Pi B+ for my project with Raspbian Jessie OS installed on it.. I have to receive "Real-time" electric current values coming from a wireless Nordic module. So to start this serial ...
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1answer
184 views

How to run a java serial data command with arguments on start-up

I am using Raspberry Pi 2 to a telosB base station to collect data from other sensors. I receive (on the terminal) hex data and redirect these incoming data into a python script which will clean and ...
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1answer
68 views

Why can I not access my raspberry pi over usb whilst using my wifi dongle?

I'm using adafruit's usb to ttl gadget to communicate with my raspberry pi over usb. For some reason when I plug in my Raspberry Pi Ralink RT8188 wifi dongle and reboot, I can't access my raspberry pi ...
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1answer
464 views

Trying to communicate over a serial connection between RPi and Picaxe 18M2 Microcontroller?

I am trying to get a serial connection between an RaspberryPi and a Picaxe 18M2 Microcontroller. I found out that I should build the following cirucit because the Rasperry and the Microcontroller have ...
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4answers
5k views

Colored console over serial connection?

I am accessing two of my Pis via a serial connection on pins 8 and 10. One of them uses a serial to USB connector for my Mac and the other uses an HC-06 which connects to my Android. The console/...
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1answer
391 views

recovery console - worked once only

Im attempting to setup an rpi via the recovery console ("headless mode") via Mac. I installed the serial port drivers, plugged in the cable (per instructions) and started a session via screen /dev/tty....
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1answer
187 views

Using only TXD, without RXD?

Can you use the TXD pin by itself, so that the UART is read only from the RXD on the device it is being sent to? My plan is to have a transistor on the RXDI (RXD in) pin of the Pi that can be turned ...
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2answers
1k views

Can I use a Galileo Gen 2 6 pin FTDI 3V3 Serial to USB cable with the raspberry pi?

I have a 6 pin Serial to USB cable from FTDI (TTL-232R-3V3). Here is the spec: http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf It works on the galileo gen 2 board. ...
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2answers
3k views

Connecting Raspberry Pi to Arduino via USB port. Run python scripts with PySerial

I connect my Rasberry Pi to Arduino Nano (Uno) and all works when I send every command through python shell: pi@raspberrypi ~ $ python2 Python 2.7.3 (default, Mar 18 2014, 05:13:23) [GCC 4.6.3] on ...
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1answer
188 views

Serial console unreliability woes

I am trying to make the GPIO serial port of a Raspberry Pi 2 with Raspbian Wheezy work with an elevator (to control its movement and check status). But before I even plug it into the elevator, I am ...