In serial communication data is transmitted as a sequence in time. Main advantage: much less wires needed. Main disadvantage: Higher bandwidth for the same throughput.

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6 views

Alternatives to the V35 interface [migrated]

I am trying to find an alternative for the legacy cables I am using. I currently have a Cisco router connected to a DL 600 E (Multiplexer). On the Cisco router there is a serial port. On the ...
0
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2answers
91 views

Confused about how microcontroller board and computer communicate

i recently got myself FRDM K64F board and got myself occupied with the following questions : Does the compiled hex code i send to my board has to go to the uart chip prior going into ...
0
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3answers
103 views

No communication with SIM900A using Arduino Uno

I am using Arduino Uno and trying to connect to a SIM900A GSM module using serial communication. I am not receiving anything from the module at all. The module powers on and has another LED flashing ...
0
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1answer
38 views

Raspberry Pi 2 to arduino RF Serial link with USB to Serial TTL Converter

This is my first question here. I want to have a communication channel which will use a 433 MHz RF TX-RX pair. I want to use a Raspberry Pi 2 as a transmitter and an Arduino Mega as a receiver. Is it ...
0
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0answers
15 views

Serial Port not found by MATLAB to communicate with Arduino [migrated]

I'm just trying to know how to established serial communication between Arduino and MATLAB. From this tutorial I copied the code, but as for my PC use "Windows" I had to change my serial port name. ...
0
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1answer
44 views

If current consumption of serial flash SST26VF064B is 15mAq104MHZ then at 50MHZ it is 7.5?

I am Mohan working in Germany. For my data logger project i choose SST26VF064B serial flash. My data logger should consume lowest power possible. I see that SST26VF064B is consuming 15mA@104MHZ. In my ...
0
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1answer
22 views

Using Energia, how do I get around disableWatchDog() locking up my program?

Below is a short code chunk. The code locks up on the 'Serial.Begin(9600);' line. Can anybody tell me why? Also, can you tell me how to get around it? ...
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0answers
4 views

How to make Arduino to stop updating i2c data when meet a condition and wait until it receives another serial input from processing? [migrated]

I am currently making a robot with Arduino Uno, D6T omron thermal sensor (i2c sensor) and some other sensors. My thermal sensor will always update the data in array form. It will display 4 data arrays ...
1
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1answer
48 views

Large range input single level shifter

I have an application where I will be taking serial signals will need to level shift the signal to 3.3V. The input signal will be from 15 to 5V for a high input and I need them all shifted down to ...
1
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3answers
320 views

Uart Full Duplex vs Half Duplex

When uC1 wants to talk to uC2 via uart, the Tx of uC1 is connected to Rx of uC2 and vice versa. Half Duplex states that only 1 uC can use the communication line at a time and Full Duplex states that ...
0
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4answers
103 views

reverse engineering a serial protocol with a scope

In lieu of a serial capture device are we able to look at the output of an rs-232 feed and correlate what we see on the scope with ASCII/hex representations (do certain voltages tend to correspond ...
1
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1answer
48 views

Does Interrupting a Microcontroller Data Receive with a Higher Priority Interrupt Cause Data Loss?

I would like to know what would happen if a Serial Terminal were to send a large amount of data to a PIC/AVR, for example over USART interrupt, which was then interrupted by a higher priority ...
0
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2answers
28 views

clock frequency confusion

I am using an atmega16 micro controller with a 12MHz external crystal oscillator. But I came to know that the internal clock frequency is 1MHz I need to calculate UBRR value for serial communication. ...
0
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0answers
79 views

ESP8266 sends garbage data always on reset

I am assigned to do a project on IOT using the ESP8266 wi-fi module. For refashing the firmware I also bought a USB-TTL converter and installed the necessary drivers on my PC I connected the RX and ...
0
votes
1answer
57 views

10Mbs USB to serial communication

I want to transfer data from a full duplex serial device (TTL) to the PC. The data rate is 10Mbs , i am investigating potential solution. I can add a level converter like max232. I have 2 questions: ...
0
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1answer
41 views

High 4bit crash in atmega128 serial communication

I am trying to communication between atmega128 and serialCom(PC), but I get a pretty strange bug. When I send data 0 to 255 (char) from atmega128 to serialCom(PC) ,after sending 0x08, the high bit ...
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0answers
23 views

Pair two RN52 Bluetooth audio modules using single button

I'm doing a project that I wanted to connect two users through RN52 Bluetooth audio modules. both of users have mic and headset for the communication. I decided to user HSP Bluetooth profile for this. ...
0
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0answers
50 views

Sending SMS with AT commands - AT+CMGF ERROR

AT OK AT+CMEE=1 OK AT+CSCS="GSM" OK AT+CMGF=1 OK AT+CMGS="+44999999999" > hello test message [CTRL Z] At this point the connection hangs for 5-10 seconds. ...
4
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1answer
51 views

Help with multiple receiver channels and single storage architecture

I want to build a datalogger that has multiple receiver channels that run on serial communication protocol RS232 and then collect the information from the channels in a single storage that would be ...
0
votes
2answers
85 views

STM32F7 Discovery USB CDC using CubeMX [closed]

I've created a project in CubeMX for my F7 Discovery. I followed instructions form here. However, in my Device Manager on Windows nothing appears. When I used precompiled code from link I was assured ...
4
votes
2answers
541 views

UART synchronization [duplicate]

I am trying to understand UART synchronization. In a UART, the default state is high, and it starts the reception process when it receives a start bit (high-to-low transition) In some scenarios any ...
0
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1answer
110 views

UART only returns the same character

I am trying to create a program that contains UART using the PIC18f25j50 device. I have attached my creation so far which is a simple program that outputs a single character repeatedly to the console ...
0
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0answers
31 views

PC Cannot Access HC-06 Bluetooth COM Port

I have an HC-06 Bluetooth module connected to an Arduino UNO board to allow for the data received by the Ultrasonic sensor to be transferred to my PC via bluetooth and serial communication. I am using ...
-1
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1answer
59 views

SFP vs LAN port [closed]

From a board design standpoint, What are the categories to consider when picking between an SFP and LAN port. This is to be used as a 1GE management data path so regarding data rates both options ...
0
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1answer
74 views

When do I need a resistor during LED flashing? [duplicate]

My goal is to flash a few white LED in serial using 9V battery. Here are the specifications of this LED. As I saw the Forward Voltage is 3.4V, but what does it really mean? Can't I plug this LED ...
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1answer
52 views

xmega serial communication using MAX3232

Hi I am trying to talk to send a character to the PC using the xmega128a1 and the MAX3232 USART to Serial converter chip. Here is my setup and "send char" function below: ...
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0answers
46 views

Connection between a USB to TTL module and a TTL to RS485 module

I have been provided with these two modules: CP2102 USB 2.0 to TTL UART Module 6Pin Serial Converter STC Replace FT232 Module sunkee MAX485 module / RS-485 module / TTL to RS-485 module How can I ...
0
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0answers
46 views

Xbee S1 transparent mode communication problem

Good morning all, I have recently bought two xbee series 1 modules as a way to learn the module, since I haven't used them before. Anyway, I got one USB connector (USB-TTL converter) and am connecting ...
1
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1answer
67 views

Windows 10 updates drivers for FTDI

I have one question about the following products: foca-v2-2-ft232rl-tiny-breakout-usb-to-serial-uart sparkfun-ftdi-basic-breakout-3-3v I bought them last year and after time without using them I ...
0
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0answers
94 views

Atmega8 and ESP8266 uart problem

I got an atmega8 and an ESP8266. I connected the atmega8 Rx to ESP Tx and Tx to Rx. I don't know why when I power up the communication is not working and the green led from the ESP stay on all the ...
4
votes
1answer
146 views

How do I choose an optocoupler for (19200 baud) serial communication between Arduino and RS422 transceiver?

I wish to read data from a Fronius solar inverter via the Fronius RS-422 Com Card option (part# 4,240,001). 1000 meter cabling length The Fronius communication uses a 5-wire RS 422 interface (`RX-`, ...
0
votes
1answer
96 views

Calibrating Servo Motor

I am working on a project on image tracking on MATLAB, by moving the mounted camera on a servo motor controlled by the Arduino Uno board, the data is serially sent to the arduino using USB according ...
3
votes
1answer
57 views

Switching Serial Connections among several devices?

I have 3 devices that communicate via a serial port. Let's call them Device 1, Device 2, and Bluetooth (BT to serial adapter). The BT is used to communicate with a computer, but it can be treated just ...
1
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1answer
84 views

Chaining Multiple USB Hub Controllers for Serial Interfacing

I have a need for a large amount of serial I/O from a desktop computer in a robotics application. I considered using all off the shelf parts with a large set of USB hubs and usb to serial adapters, ...
1
vote
1answer
39 views

interfacing external push button to msp430 using energia

I am writing code in Energia using the mso430g2553 launchpad and an external pushbutton with a pullup resistor. The code should simply display the state of the button on the serial monitor, 1 for ...
0
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0answers
106 views

Problems connecting esp8266 through HL-340 usb serial adapter on Ubuntu (Input/output error)

No matter what I try I can't seem to get a serial connection going between an esp8266 (this model: http://www.autonomii.com/wp-content/uploads/2015/04/esp8266_pinout_h-569x236.png) and my HL-340 (was ...
1
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2answers
77 views

Serial Communication Rx ISR logic design

If im not wrong, an ISR is supposed to do minimal processing when it receives a data serially(via UART). Im planning on implementing such a protocol for communication between 2 systems via uart. This ...
-2
votes
1answer
94 views

Is it possible to use two communication protocols in one microcontroller?

So I've been trying to communicate between the Beaglebone Black and atmega through I2C for quite such time and have been facing quite a lot of problems with it. On the other hand I can successfully ...
2
votes
2answers
63 views

Issues related to multiplexed analog signals

I had an idea to transmitte a measured voltage of component X, from multiple slaves to one master device. Each slave's units would use the principle of time division multiplexing to set the data line ...
-5
votes
2answers
413 views

M-Bus (Meter-Bus) Arduino / RPI [closed]

Is there some one that have manage to connect to a M-Bus (Meter-Bus)? With a Arduino or RPI? Maybe a M-Bus to serial is the way to go?
-1
votes
1answer
92 views

Clock and data vs rx and tx communication

I'm working on a project in which I have to make two pic10f200 microcontrollers communicate via serial communication lines. I know that with Arduino you interconnect the two board's rx and tx lines, ...
1
vote
2answers
309 views

sharing ground for serial connection Across raspberry Pi and Arduino both with different power supply

I do power the Raspberry via a 5V USB charger. The Arduino is soldered into a different circuit and is powered from a 24 V circuit via a 5V charge regulator. Both will be connected to the same 230 V ...
0
votes
2answers
61 views

Put firewall hardware with ethernet ports between serial ports

I want to put a firewall hardware product between a RTU and PLC to block some Modbus function codes (e.g. write coil, read coil). (This firewall product is able to do deep packet inspection on Modbus ...
0
votes
1answer
73 views

Sending multiple electrical signal to PC via Serial port

I am doing a project in which I want to control small toy car using EMG signals from my forearm. I want to send 4 electrical signals to the computer. I have made a processing circuit which contains ...
-3
votes
1answer
56 views

Serial Bus Handling [closed]

Multi receive topology is used like connecting one TX(sensor) to two RX(computers). My question is it also possible to connect two TX(computers) to one RX (sensor).
0
votes
2answers
70 views

Convert TTL levels to RS232 of FTDI USB<->Serial

Have this small interface FTDI FT232RL to connect a Serial device to the computer via USB. It has been working well for most of my Serial applications, except today when I tried to use it for a ...
0
votes
1answer
82 views

Modbus raw data COM capture file example?

I'm attempting to use a RS232 tap to sniff a serial connection between two devices that are communicating using Modbus RTU. I'm looking for any capture files taken from sniffing a COM connection or ...
2
votes
3answers
89 views

UART Receiver Sampling Rate

I am trying to create a UART receiver in Verilog for my FPGA. I was following this guide http://www.fpga4fun.com/SerialInterface4.html According to it the standard practice for asynchronous ...
0
votes
0answers
43 views

SPI bus, is two active devices with shared MOSI with separated MISO possible

I have two SPI ADC chips. I would like to initiate a reading on both of them at literally the same exact time. Is this scenario feasible with SPI? Hardware is configured like normal except MISO of ...
1
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1answer
153 views

RS232 UART verilog code

I am trying to generate a Verilog code for transmitter that sends data at 1 start bit and 1 stop bit from FPGA and receive on my PC at 1 stop bit. If anyone can provide a link or suggestion, it will ...