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en:bpi-r2:debug-uart

BananaPi R2 - Debug-UART

  • USB2Serial-Adapter (e.g. CP2102 or FTDI, known problems with Profilic- and ch340g-Chipsets)
  • using Uart-Pins (not 40-pin-connector)
  • TX ⇒ RX
  • application for PC:
    • Linux: minicom
    • Windows: putty??
  • settings: 115200 8N1 FlowControl: off

micro-usb-cp2102-adapter: https://www.ebay.de/itm/CP2102-MICRO-USB-to-UART-TTL-Module-6-Pin-Serial-Converter-STC-Replace-FT232/401269171476

configurating Putty

configurating minicom

first get name of device:

grep ttyUSB /var/log/syslog
Oct 15 12:44:59 Frank-Laptop kernel: [ 5113.456306] usb 3-1: cp210x converter now attached to ttyUSB0
ls -l /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 0 Mai 10 15:12 /dev/ttyUSB0
#add current user to group dialout (for access to tty-device)
sudo adduser $USER dialout
#login/logout needed to join the group
#show groups of the user
groups
frank adm dialout cdrom sudo dip plugdev lpadmin sambashare

Install minicom & setup

sudo apt-get install minicom
sudo minicom -s
          +-----[configuration]------+
          | Filenames and paths      |
          | File transfer protocols  |
          | Serial port setup        |  <<<<<<<<<<<<
          | Modem and dialing        |
          | Screen and keyboard      |
          | Save setup as dfl        |
          | Save setup as..          |
          | Exit                     |
          | Exit from Minicom        |
          +--------------------------+
  +-----------------------------------------------------------------------+
  | A -    Serial Device      : /dev/ttyUSB0                              |
  | B - Lockfile Location     : /var/lock                                 |
  | C -   Callin Program      :                                           |
  | D -  Callout Program      :                                           |
  | E -    Bps/Par/Bits       : 115200 8N1                                |
  | F - Hardware Flow Control : No                                        |
  | G - Software Flow Control : No                                        |
  |                                                                       |
  |    Change which setting?                                              |
  +-----------------------------------------------------------------------+
  • “save as .dfl”
  • “Exit from Minicom”

now start minicom as user (without sudo)

exit with Ctrl+a,q or Ctrl+a,x

Discussion

en/bpi-r2/debug-uart.txt · Last modified: 2018/06/15 18:29 by frank