is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus.

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Persistent names for usb-serial devices

I am making weather monitoring system to use raspberry pi2. In weather eye, two sensor and two usb to serial port. I want Persistant names for usb-serail devices. ...
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39 views

Use ssh as substitute of serial

Hi please excuse me if this is a dumb question. I'm making a small machine, driving 3 steppers, and the connection between the computer (linux OS) and the controller (Raspberry pi Compute Module) is ...
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1answer
34 views

Using SignalR Client in UWP running on Windows IoT

I'm running Windows IoT on a Raspberry Pi. After I turn on my Raspberry Pi and Windows IoT starts up, I want to automatically begin reading sensor data from a serial port continuously, and also send ...
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2answers
29 views

/dev/ttyAMA0 only working when another USB/RS232 converter plugged in

A strange one! I'm trying to use the on-board UART, /dev/ttyAMA0, with dixprs. I'm on Raspbian Jessie, and have: Taken the ttyAMA console out of /boot/cmdline.txt Disabled agetty on ttyAMA0 with ...
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1answer
24 views

Raspberry Pi 2 and Adafruit Thermal Printer 597

I have been encountering problems regarding my raspberry pi 2. I've been following the instructions given @ https://learn.adafruit.com/pi-thermal-printer/overview when I change parameters in my ...
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0answers
60 views

How to make a simple bluetooth connection on Raspbian?

So a week ago I finally got the bluetooth part of my code running. Everything was fine but after some changes and a failed upgrade (bad internet connection) I decided to start a fresh installation ...
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16 views

motor control using Windows Desktop Through rasPi

I am totally new for RPI and just started to learn about it I want to achieve is that I have my desktop with visual studio 2013 and I want to control 3 motors via RPI So it’s like: Win(visual studio ...
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24 views

Serial data cut off due to script termination

I receive a data message over serial every 15 seconds. And I want to create an hourly file with these data messages appended. 15 seconds between the messages means I will get 4 messages per minute and ...
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1answer
24 views

Wiring-up and testing a sensor via Serial-to-USB

My sensor (photodetector + LED) communicates (send-only: does not receive) via RS-232 at 9600 8-N-1. It has 4 lines for power ground RS-232 TTL Serial The sensor's ground and RS-232 are ...
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1answer
47 views

USB Serial Port Configuration

Goal: configure serial to USB cable for 9600 8-N-1 Cable is plugged-in and observed: root@OpenHAB:~# uname -a Linux OpenHAB 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l ...
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1answer
658 views

Cronjob is set to run every 5 minutes but runs every minute

I have a problem with my python script. It looks like this: #!/usr/bin/python import time import serial import datetime import sys Y = datetime.datetime.now().strftime('%Y')[3] filedate = ...
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2answers
43 views

Raspberry Pi 2 Arduino Mega USB Communication

we are trying to control our rover via wifi. the idea is motor drivers are connected to arduino mega and the mega is connected to raspberry pi 2 (raspbian os) via USB. raspberry pi is receiving ...
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1answer
23 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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3answers
182 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 ...
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1answer
60 views

How to serially communicate between raspberryPi and arduino using usb to serial converter?

How do i serially communicate between them, just using the usb ports on the raspi and the rx, tx pins on the arduino? Are there any better ways to communicate between raspi and arduino?
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31 views

RX/TX Issue with FT232R USB UART

English is not my native language so please be patient. Hi to all, happy new year. I'm using a Raspberry Pi 2 (model B - running Wheezy) and a usb2serial converter, I'm trying to control an electric ...
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1answer
51 views

Can I use an FT232RL USB to TTL adapter with Raspberry Pi for a GPS module?

I am just starting to scratch the surface and attempt to understand TTL and serial data ports in general, and am really just trying to put the pieces together and see if I'm on the right path. First, ...
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1answer
55 views

Is there a way to attach multiple serial port devices to a single raspberry pi?

I have three separate devices that all need access to a data serial port on the pi. My devices are an accelerometer, a GPS unit, and a GMS cell service chip. I've found tutorials on how to attach ...
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1answer
73 views

Serial connection Arduino - Pi

I am having an Arduino Nano sending "48" or "49" via a serial connection to a Pi. I'd like to use this input, but for some reason the connection always cuts out after a few seconds with the following ...
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1answer
104 views

Using serial data to change between two images

I have data coming in through the GPIO serial from an arduino nano. I can already use minicom to monitor that data. Now I would like to use this data to toggle between 2 images. As being relativly new ...
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1answer
77 views

Is it possible to access the built-in serial and the gpio ports via powershell on Windows Iot?

Is it possible to access the built-in serial and the gpio ports via powershell on Windows Iot?
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2answers
324 views

Binary garbage on the UART when powering the RPi

I have a strange issue I cannot figure out. I have a thermal printer (https://www.adafruit.com/products/597) plugged to the UART (/dev/ttyAMAO). I configured the RPi to remove the console on ...
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3answers
250 views

Serial Communication C/C++

I was wondering if its possible to communicate between Arduino ann RPi using Serial Communication in C/C++, it's possible with python but didn't find a suitable library for C/C++ ?
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45 views

Run minicom after auto login and store serial data from usb to a file

I want to save the serial data from /dev/ttyUSB0 into a file (.txt) once I power on my raspberry pi. ( Because I won't be connecting display or keyboard to pi and I have to power off directly once my ...
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92 views

QT serial Program on Raspberry Pi

I use QT 5.3.0 with the built-in extension QtSerialPort on the onboard serial (/dev/ttyAMA0 in raspbian). I send command to a fingerprint reader to up the baudrate, obtain the response (correct ACK) ...
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37 views

UARTX Rpi Arduino Communication

I have tried establishing UART connection between my rpi and arduino mega, I tried to follow this tutorial {http://blog.oscarliang.net/raspberry-pi-and-arduino-connected-serial-gpio/}, where I use a ...
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1answer
416 views

/etc/inittab not found in rpi

I am new to the RPi, and I want to link it to the arduino Mega through Serial communication with a rpi b 2, so i bought a logic converter, and did wiring and everything, but now i wanted to make some ...
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2answers
123 views

Raspberry Pi and serial only working one shot

I am using a USB-to-serial adapter to let the Raspberry Pi talk with some motor controller through the serial bus. I made the following Python script: #!/usr/bin/ipython import serial import time ...
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1answer
133 views

Serial Connection on Win 10 IOT

With the new insider preview win 10 iot 10556 the serial port from raspberry pi2 is now available. I want to test it but my SerialDevice is always NULL. Here is my code: private SerialDevice ...
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191 views

Serial communication on Raspberry Pi - can send data, but cannot read data

I'm using Raspberry Pi 2 to realize RS232 communication between raspberry and my laptop. It seems that my Raspberry Pi can send data, but it can get nothing from my laptop. The following information ...
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1answer
50 views

Locking up when using USB terminal between MacBook AIr and RPi2

When I communicate with RPi2 using USB (pin 6,8,10) to my MacBook Air using Terminal, it works fine until I use nano to edit python. Then the communication gets scrambled (what happens is not what I ...
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72 views

Serial Console Forwarding over wifi

I am using a TTL to USB cable with my Raspberry Pi and I would like to forward that UART signal over the internet, or just over my own network via a usb to wifi chip of some sort. How would I go about ...
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1answer
45 views

Working with RS232 and USB

I have a device that only has a RS232 serial port for communication. Since board cases would be used, RS232 serial interface is not preferred. Instead, I would like to use a RS232 to USB converter. ...
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1answer
134 views

Garbled Text using Serial to USB Connection

After days and days of trying to get my Serial to USB to work I am no further forward - I am trying to log NMEA sentences from a GPS Module via USB to Serial. I have two leads: Bus 001 Device 010: ...
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21 views

Why does my Raspberry Pi drop all remote connections when launching Putty

When launching putty to remote from a serial port in a raspberry pi, its gets this annoying habit of dropping my remote desktop connections. Doing this kinda distrubs on of the other apps I work with. ...
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2answers
99 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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1answer
44 views

stty command lag and queue issue

I have plugged in a serial-USB, and run the command: stty -F /dev/ttyUSB0 38400 Then I am using PHP to send calls to the serial-USB like: file_put_contents("/dev/ttyUSB0", ...
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1answer
44 views

Rpi to arduino via USB

I am a little bit hazy about the serial ports on the RPI. I am using GPIO pins 14 and 15 to connect to my GPS. Can I at the same time use the USB port to connect serially to an Arduino? Or is there ...
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1answer
29 views

Packet time is measured different timing by Logic analyzer during Ping are different?

I was pinging in serial line(UART) using SLIP in PI 2. Ping was reporting certain time. Also, I was using logic analyzer to check the complete duration of packet start to packet end. I found out that ...
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68 views

Compute Module Serial Interface

I am attempting to use a USB to TTL cable to create a terminal interface with a Raspberry Pi compute module on a compute module development board. I followed these instructions, but to no avail. The ...
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1answer
79 views

Serial communication gives incorrect read

I have a serial device which can read and write bytes to the a java application based on inbuilt protocol. The java application in my windows PC gives me the correct output. My java application is ...
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1answer
136 views

cannot increase UART clock frequency

I would like to increase UART speed. So, I followed this page. http://www.thedevilonholiday.co.uk/raspberry-pi-increase-uart-speed/ I added init_uart_clock=64000000 and rebooted pi. But, still I got ...
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2answers
126 views

PHP USB serial port call from Windows to Linux

I have a piece of simple code that works on a Windows - WAMP environment, e.g. <?php `mode com3: BAUD=38400 PARITY=N data=8 stop=1 xon=off`; file_put_contents(com3, ...
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1answer
62 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 ...
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1answer
109 views

Serial vs I2C speed

I'm interested in knowing which is faster, Serial communication or I2C. So far I have the following two snippets of information that I have found while doing a bit of research. Serial communication ...
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49 views

Raspberry Pi to Roomba communication serial port

I'm developing a program in C where I want to communicate a Raspberry Pi with the roomba robot by the serial port, and I've got some problems. First of all, I have the source code where I connect to ...
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1answer
74 views

Can't send data via serial port from Rasp Pi2 to Dell D630 laptop

I want to connect old Dell Latitude D630 laptop with my Raspberry pi 2 via serial port. I have been following tutorial on this page and another here. Unfortunately I can't transmit any data from ...
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1answer
85 views

pigpio and 1wire working together

I want to have two more-or-less independent programs running on my Raspberry Pi, one that monitors temperature and another that does protocol translation between two asynchronous serial devices. I ...
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1answer
511 views

How do I create a virtual serial port for me to use?

I am testing a python application on the pi that uses a serial connection via usb to serial adapter. At the moment, I can't use the actual physical device its communicating with. So, does anyone know ...
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93 views

serial device communication problem with high baud rate

I have a serial device connected to pi´s USB slot. The device is detected in ttyUSB0. Aten uc232a usb to serial adapter is used between the serial device and pi. I have to run a read and write ...