Questions tagged [serial]

is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus. Traditionally "serial" relates to a three (or more with hardware handshaking) wire system (TIA-232-F), now using ∓25V Voltages. Technically speaking the specialized SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) buses are serial communication systems as well - use one of those tags if they would be more appropriate!

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Do I even need a second board?

I am trying to use Raspberry Pi to stream and audio/video feed, and will probably be installing FFmpeg to do most of the work. I am trying to connect a camera and a microphone to the Pi board so that ...
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XBee library for Raspberry Pi [closed]

Is there any existing easy way to install a library for XBee in Raspberry Pi? I found a library, but I don't yet posess the knowledge to get that library to work on the Raspberry Pi. I have the XBee ...
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3answers
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UART serial interrupt routine

Is there a simple way to use the registers as an interrupt trigger? I can make the application run in a new pid and poll for serial input using fork() I just need to read data, no write needed This ...
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Which chip to use to connect a Serial device to raspberry pi

I recently tore apart my old laptop and scavenged a few parts from it, namely a fingerprint scanner and a synaptics touchpad which I want to use with my raspberry pi. All are 4 wire devices so ...
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2answers
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UART Output working on 57600 Baud but with 115200 only gibberish

I've got a strange problem with serial output. Using Wheezy and 8 Databits, 1 Stopbit, NoFlowcontroll, NoParity (config as stated in eLinux Wiki). With 57600 Baud everything works fine but with 115200 ...
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3answers
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How do I connect my printer to the serial GPIO pins?

I've purchased a Mini Thermal Printer from Adafruit. The documentation states: This printer is ideal for interfacing with a microcontroller, you simply need a 3.3V to 5V TTL serial output from ...
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4answers
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Interfacing with an RC receiver using PWM on the GPIOs

I've been struggling for a few days and haven't managed to turn up a lot on the internet. I'm looking to READ from the PWM output of an RC receiver through one of the GPIO's on the RPi. I've read ...
28
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3answers
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Can Raspberry Pi reliably bit bang a 9600 baud serial and is there example code?

I am wondering how feasible it is to use bitbanging to drive a 9600 baud serial via the GPIO pins on the Raspberry Pi. Obviously, Linux is not a terribly good platform for bitbanging, as there is a ...
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4answers
55k views

How do I get the data from the serial port?

I have a Ciseco XRF radio module and a Slice of Pi expansion board. Using the program 'screen' works fine; I can see data being transmitted to the XRF module. How do I get the data from the serial ...
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5answers
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GPIO-UART-to-Arduino communication

I have been trying with no luck to get the Raspberry Pi talking to an Arduino. I am using a 3.3 V-to-5 V converter to swap voltages. I did put an LED on the UART TX pin, and it looks like it ...
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4answers
59k views

How can I connect to a USB serial device?

I have a device with a USB serial port cable that I'd like to connect to my Raspberry Pi. The chipset for this USB to serial cable it the PL-2303 from Prolific Technology, Inc. How can I read data ...