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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How to disable sysrq on UART
I am trying to talk to a device over serial (ttyAMA0 or serial0) and it works, but sometimes I get the following TX from my rpi4, which crashes the device I talk to:
[22763.820857] sysrq: HELP : ...
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Raspberry pi 3 reading serial port
I have a python code that reads the serial port of the raspberry pi 3to obtain GPS positions from a fona808. The code works for some time and then throws this error.
Traceback (most recent call last):...
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Raspberry Pi Pico doesn't create tty file
I've been using Raspberry Pi Pico for some time already and I'm using minicom for serial communication. But one day Pico stopped generating tty/ATCM0 when connected to USB port. Before this everything ...
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Real TTY Driver installation - Moxa 5110 not able to connect /dev/ttyr01: Input/output error
trying to get my Moxa Nport 5110 to work with the RPI4.
Currently Using:
Raspbian GNU/Linux 10 (buster)
installed moxa-real-tty-drivers-for-linux-kernel-5.x-v5.1
added some tty ports automatically (...
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PN532 with Raspberry Pi Pico
I have PN532 NFC Module that looks like this
I am trying to connect this NFC Module with Pico, but I have no luck in finding library that allows me this. What can I do to control it? Can you ...
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Incorrect TTYS0 input from sensor
I am trying to read data from a LV-MaxSonar-EZ0's TX pin connected to the RX pin on a Raspberry Pi Zero W. The problem I'm running into is that the data I'm getting does not fit what the sensor's ...
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Unable to use UART and Bluetooth in RPi3 with audio output simulatneously
I am using Rpi 3b+ and I am trying to use the Bluetooth and UART simultaneously.
with ls -l /dev:
Serial 0 - ttyAMA0
Serial 1 - ttyS0
I had to use the UART (for reading coordinates in GPS) and ...
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Why does USB port enumeration change?
I'm using a Huawei GMS/UMTS USB modem with Gnokii and Gammu.
The modem was in the lower port on Pi. With dmesg | grep tty it would show up on /dev/ttyUSB0 and /dev/ttyUSB1. (2 USB devices on 1 stick ...
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SIM800 GSM Module To Raspberry Pi UART Serial Communication Problem [closed]
I am new to Raspberry Pi Zero and I want to connect it with a GSM module for GPRS connectivity. I bought the SIM800A GSM module but its LED is not even blinking one single time.
I am able to turn on ...
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pyserial and parity check
I am using pyserial library to deal with serial communications between my CM4 and a particular device.
This are my settings:
_baudrate = 9600
_parity=serial.PARITY_EVEN
_stopbits=serial.STOPBITS_ONE
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Missing dtbo overlays in Yocto build for Compute Module 4, what do I need to get them added?
So I have a problem that I have half solved and was hoping someone would know how to solve the rest.
So yesterday I encounted a problem that I asked and partially solved at the link below.
CM4 Uart 0 ...
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Can't communicate device with his RS323 to 2 pins uart of GPIO
I have a a microbench device, it has his RS232 port.
but I just can read data from this microbench device with this cable:
The microbench device have tx pin with -9V. How can I comunícate microbench ...
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Serial communication over USB port of Pi Zero
I want to send/receive data between PC and Pi-Zero over USB port near PWR port.
I followed the instructions here https://www.tal.org/tutorials/raspberry-pi-zero-usb-serial-console But I don't enable
...
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DS18B20 reading double after long use
I installed two DS18B20s on a pi almost a year ago. They have worked great until the last couple months. I am doing a bit of a stress test on them and have been polling them every second for almost a ...
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/dev/ttyusb0 cannot be find while starting script on boot for raspberrry pi
(Currently using Raspbian Jessie latest)
So currently I am trying to start a script that reads from the rf receiver and gathers the data and sends it over to the cloud...
I am trying to start this ...
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