#ENTERING KDB DUE TO KEYBOARD ENTRY HOW TO#

вЂ“ A good tutorial on building-from-scratch for the R PiВ root filesystem and Linux kernel,В using the excellent Buildroot tool, вЂ“ Using kgdb, kdb and the kernel debugger internals RXD (GPIO 15) TX-O board (directly opp the USB mini connector)) TXD (GPIO 14) RX-I (RX-I and TX-O pins are at the front of the FTDI My R Pi (Model B) attached to a FTDI FT232R USB-to-TTL breakout boardДЄbove pic:В My R Pi (Model B) attached to a FTDI FT232R USB-to-TTL breakout board. IвЂ™m using FTDIвЂ™s FT232R Breakout board it works very well indeed. I find a simple and efficient way to do this is to make use of the GPIO pins 14 (TXD) and 15 (RXD) on the board, connecting them to a simple FTDI вЂ“ the R Pi does not have a dedicated physical serial port we require one to get (and send) console I/O (so that we can see kernel printkвЂ™s and interact via the keyboard). вЂ“ have a custom Linux kernel running on it (need to be able to modify kernel configuration and rebuild at will) вЂ“ have an R Pi (I use the Rev B R Pi) with an SD card вЂ“В have some familiarity with setting up and using KDB and KGDB (a bit of this is covered here, not all) also, see some useful Resources just below. вЂ“ know something about Linux kernel programming, writing kernel module code, etc

#ENTERING KDB DUE TO KEYBOARD ENTRY HOW TO#

вЂ“ know how to build a Linux kernel from source

Entering kdb due to keyboard entry