The gdbstub feature provides an implementation of the GDB Remote Serial Protocol (RSP) that allows you to remotely debug Zephyr using GDB.
The protocol supports different connection types: serial, UDP/IP and TCP/IP. Zephyr currently supports only serial device communication.
The GDB program acts as the client while Zephyr acts as the
server. When this feature is enabled, Zephyr stops its execution after
gdb_init() starts gdbstub service and waits for a GDB
connection. Once a connection is established it is possible to
synchronously interact with Zephyr. Note that currently it is not
possible to asynchronously send commands to the target.
Enable this feature with the
The following features are supported:
Add and remove breakpoints
Continue and step the target
Read or write general registers
Read or write the memory