OpenOCD- Jlink&IAR via GDB Server

After installation of OpenOCD

http://blog.youkuaiyun.com/iamlvshijie/article/details/7423611

we can test GCB Sever before development.

What is GDB Server?

from wikipedia:

gdbserver is a computer program that makes it possible to remotely debug other programs.^[1] Running on the same system as the program to be debugged, it allows the GNU Debugger to connect from another system; that is, only the executable to be debugged needs to be resident on the target system, while the source code and a copy of the binary file to be debugged reside on the developer’s local computer. The connection can be either TCP or a serial line.

Step1: Run OpenOCD GDB Server

run your openocd, telling it you jtag interface and target like this, I write a bat  file for windows.

@echo OpenOCD JLink GDBServer
c:
cd cygwin\openocd\tcl
openocd -f interface/jlink.cfg -f target/stm32f1x.cfg
pause

then I check the network connecting:

Step2: IAR Setting

open a IAR Project, then make the projects.

choose project>Options>Debugger

select GDB Server,

then 

type localhost, 3333   //attention, there is a comma before 3333

so why is 3333? we check it out.

openocd use the tcp port 3333.

Step3 Debugging

then start debugging: Project>Download> Debug

check it again:

It proves what is GDB server.

Done. It is a little slower than using jlink directly.