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Questions tagged [interfacing]

69 questions
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UART in LPC1778 not working

I am trying to send a byte using UART1 in LPC1778 (I'm Using Keil Simulator). However I'm not able to send the byte; after detailed debugging, I came to the conclusion that data is not getting written in the UART1->THR register. This is the code…
Debayan Ghosh
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C++ Python Swig Compability with Scons and/or dynamic libraries

So what I want to do is fairly straight forward, I want to access a C++ class in Python using swig. I've managed to do this for stand alone applications but that's not enough. What I have: a fairly huge C++ library which is compiled using SCons.…
Robert Erneborg
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Trouble in getting RFID tag value from serial port of computer

I am developing a RFID attendance counting system for my classroom. I have interfaced MFRC-522 RFID module with Arduino Uno. The Arduino Uno is connected to a PC via serial port. A C# program reads the serial port to get the RFID tag number and…
Nafees
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Interfacing push button switches with Raspberry pi 2

I am making a Braille keyboard, and I need help in interfacing buttons with RPi. As Braille is a 3*2 matrix, I will be connecting push button switches according to the braille matrix. Problem statement: If I press button 1*1, on my text editor, 'A'…
Ankit Kumar
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MSP 430FR5739 interfacing with Adafuit ultimate gps

i am doing a low power mode gps project for msp430fr5739 development board. this board's operating voltage is 3.3 volts and my gps module also can operate with 3.3 volts supplied power. How about effect of logic levels of UART protocol. do i have to…
engineer nikemen
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Using multiple hcsr04 sensors on Beaglebone Black

I am trying to use hcsr04 sensors on the Beaglebone black (adapted from this code - https://github.com/luigif/hcsr04) I got it working for 4 different sets of sensors individually, and were now unsure of how to combine them into one program. Is…
Priyadarshini S
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Parallel Port Interfacing in Assembly Language

Hi I am having problem in interfacing Parallel port using Assembly Language and TASM for assembly. Here is the sample source code: .model small .stack .data .code main: mov dx, 378h mov al, 00001000b out dx, al ; output …
ChaosDarky
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16*2 LCD interfacing with Beagleboard xM using kernel module

I am trying to interface a 16x2 LCD with Beagleboard xM using GPIO. I have done this by using a shell script and it's working very good. Now I want to achieve the same functionality by writing a kernel module. I know little bit about kernel…
Novice
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how to stream music to a bluetooth module?

i have a Bluetooth module and micro controller to decode the music. but i don't know how the music is send serially. i have searched for this problem. but i didn't get anything useful. i need to make a Bluetooth music player system using micro…
user3273263
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Interfacing 8086 assembly language with USB to UART (pc to pc communication)

I'm using dosbox to allow 16 bit programs to run and TASM. my OS is windows 8 and I don't seemm to have any trouble with running any other interrupts except the 14h interrupt specifically transmit and receive. I use two USB to UART modules with…
John Chua
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LAN Port as controller

i need only to get any voltage out from my laptop to control a relay how to get a signal from a LAN port from any pin ? in my laptop there is no com Port or lpt Port also the usb port needs interfacing circuits which is not nessesary in my simple…
Zubir Secter
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Interfacing PS2 joystick with atmega640 with SPI

I am trying to interface PS2 joystick with avr Atmega 640 with microcontroller SPI ,there are many codes in bit bang avalible in internet but i want to interface PS2 with SPI in AVR.I have written code in winavr i have written a code BUT…
Sunil Sheth
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Using MATLAB to send multiple serial signals through the same port

I'd like to send multiple signals (4 inputs and outputs and 7 outputs) from my Laptop to a microcontroller. I'm thinking of using a USB to serial converter and multiplexing the data through the port. I'll need to write codes both in the laptop end…
Analon
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Issues in running R from Perl

I want to include Statistics::R for my program. The statement I am including is: use Statistics::R; Is there something wrong with it? I tried to run it with just this statement included, the error i got was Can't locate…
sagar sethi
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SPI and I2C interface on Pi

I was going through this article Under the heading "Real Time performance constraints" it talks about the constraints and says that "This means that you should not expect to get real-time performance or real-time timing constraints from such…
user2421733
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