linux:serial_ports
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Table of Contents
Possible alternatives for virtual serial ports
- Pseudo teletype – Linux C programming
- socat – Command
- fuse – Filesystem in userspace
- pipes – Heave data between processes
Experiments
Get info:
$ dmesg | egrep --color 'serial|ttyS'
Some commands to manage, read and write to the serial port
# Print info $ setserial -g /dev/ttyS0 # Using cu (call-up). Exit by typing ~. $ cu -l /dev/ttyS0 -s 115200 # Using screen. Exit with c-a k $ screen /dev/ttyS0 115200
Serial port basics
| DTE | Data terminal equipment (computer/MCU) |
| DCE | Data circuit-terminating equipment (modem/device) |
| RTS | Request to send |
| CTS | Clear to send |
| DTR | Data terminal ready |
| DSR | Data set ready |
Accessing a serial port
Pseudo teletype
linux/serial_ports.1601456380.txt.gz · Last modified: 2022/09/12 00:30 (external edit)