Operate BTR debugger
Now we start to learn some classic BTR debugger operations:
1) build
7) GoLang debug
10) PV check
13）embed linux debug
Build code , flash codelog , filter , inser break, print text, watch var , detail codelog, pv check , such operations do many times , it is a expert way!
1）build multi projects in shell( use bm.exe , not use bd.bat )
A：
echo off
bm.exe build e:\exer\Cproj
bm.exe build e:\exer\Dproj
echo on
For code in dir e:\exer\Cproj\，bm.exe build code and add debug information。It used for background compiling & debugging。Big company building , packing , debugging all in back server.
B：
bm.exe build e:\exer\Eproj modX
For code in dire:\exer\Eproj\modX，bm.exe build whole project code and only add debug information in modX.
2)build in bd.bat | bd.sh prompt
bd > build e:\exer\myproj modX
bd.exe build whole project code and only add debug information in modX
bd > build e:\exer\myproj
bd.exe build code and add debug information.
3) build and debug only 1 or 2 files
bd > build e:\exer\myproj a.c
b.c
build myproj, only debug a.c b.c . watch its codelog or variable . The programme runs fast , the process log becames more clearly.
bd > build e:\exer\myproj SetData*.go
build myproj, watch SetData*.go . program runs rapidly.
By the way , some projects such as mcu interrupt code or embed camera data transfers to app, need to assigned file to debug ，so data or variable be traced in high-speed system.
4) exercise
build：
compiling:
build ok:
Java web deploy：
user do not modify project which can also deploy on web server .
flash command：
bd > flash
-> get process log， only show the latest 256 lines.
bd > flash –s a.txt -> get process log， only save the latest 60000 lines to file.
bd > flash a*.java
-s a.txt ->
only save a*.java process log
bd > flash c.c : 78 –s b.txt -> only filter to save a function
which include a.c 78 line.
exercise：
build and run：
get
process log：
a sample：
app not response ，look the process log ，" delete pMainFrame; " shows the obj released，why? look its code：
The
reason is pMainFrame be used without be created。modify：
CMainFrame *pMainFrame;
pMainFrame =
new …
if ( !pMainFrame || !pMainFrame->LoadFrame(..)便OK了。
The next process log：
app no
windows，get process log ，shows "return
FALSE"，"if ( pDocTemplate
) return FALSE" , if condition is error. modify：
if (
!pDocTemplate )
return FALSE;
Then its OK. so checking process log & modifying bugs is
far more better than guessing bugs.
bins command add a break pointer , if no crashed code, you should add a break before run it. the process will run more rapidly.
bins a.py 10 // insert break point at a.py 10
run
python，paused at break point
Get
process log ，press F3 hot-key to continue
insert bprint( string ) in code , then use bd.exe buildd it . you can see the output text.
bd.exe build:
runs:
3 lines
printed
use bwatch( ) to watch the value history of the assigned variable. data_type is basic data type , or its data array
example:
C: bwatch( "title" , var_address , data_len );
bwatch( "Person" , &p , char , 128 ); // C can watch a whole struct
GO: bwatch( "title" , var_name , data_type , data_len )
bwatch( "PersonNum" , p.num , int , 8 )
bwatch( "PersonName" , &(p.name[0]) , rune , 10 )
bwatch( "Wives" , p.wives , [8]string , 64 )
bwatch( "Wifeslice" , wive_slice , []string , 64 )
C# & JAVA : bwatch( "title" , class_name , obj , member_name , data_type , data_len );
bwatch( "title" , Person , this , p.age , int , 4 ); // if bwatch (p.age) called in Person.java , obj == this
bwatch( "title" , Person , Person , p.age , int , 4 ); // if p.age is static int , obj1.age == obj2.age== class.age
bwatch( "title" , null , null , k , int , 4 ); // error , stack var k can not bwatch()
bwatch( "title" , Person , chongqing , p.age , int , 0 );// close bwatch(p.age) , if p.age will leave its range.
Go: bwatch( "title" , var_name , data_type , data_len )
bwatch( "age" , p.age , int , 8 )
...
bwatch( "age" , p.age , int , 0 )
bwatch( "manwives" , p.wife , [8]string , 128 )
build:
runs it ，then use vlog command get var log：
It shows g_MainWindows_num have 4 values
In mcu( such as stm32) debugger, bwatch() can only see its value , cannot see its value history.
In Java | c#, bwatch() can see object value history:
bwatch( name , class , object , member , datatype , datalen ); //open watch
bwatch( name , class , object , member , datatype , 0 ); //close watch
datatype is basic data type and its array.
for example :
Person p = new Person( 20 , 40 );
p.age = 30;
p.wife = {"linda" , "lisa" , "", "" };
bwatch( "AGE" , Person , p , age , int , 4 );
bwatch( "wives" , Person , p , wife , String[] , 128 );
...
bwatch( "wives" , Person , p , wife , String[] , 0 );
bwatch( "AGE" , Person , p , age , int , 0 );
The following is Go PrintScreen :
insert bwatch() before build
build
build ok [GO_BUILD_PATH]和[GO_BUILD_OUTPUT] auto write to bdebug.ini
break trigger, vlog -s v.txt, shows var of a modify history
flash -s a.txt , the tail of 102 lines hello.exe log
lon command unlock 60000 lines limit，allow bd.exe record the first code line:
The beginning of process :
The latest process ：
All process log total 402861 lines.
Filter
process log ，drop un-import log，simplify to find BUG，
Only see MFCApp.exe main entrence code：
clog
mfcapp.cpp –s d.txt
Only see the funxtion of classview.cpp OnCreate()，OnCreate() include the 77th line，use clog classview.cpp 77 ：
Total 20 lines，the whole log is 200000 lines，，its a comfortable experience to filter log & find bugs.
There are
many PV pair functions，like open close , connect disconnect. CreateObj , DestroyObj，malloc free , new
delete，use PV command wach
its creating , destroying. malloc free , new
delete already PV tracing，others PV function should config in bdebug.ini first.
run bd.exe
then run
D:\exer\VC2015\MFCApp\Debug\MFCApp.exe，
exit MFCApp.exe，use PV command to look the
un-freed objs：
There are
14 objs not deleted，or not offfical released. it is
bad. Good code should offically , completely release all objs.
timeon command
run：
get
process log ，it already included the used time pieces：
By
process log ，wa can see
mfcapp.cpp 76 lins " CWinAppEx::InitInstance()" used 376 time-pieces，mfcapp.cpp 101 "LoadStdProfileSettings(4)"
used 241 time-pieces，code performance tunning begans from the two
functions.
network：
the network is home-used WIFI router，connect PC with ether card， connect android phone use WIFI password. Test shows PC IP is 192.168.0.100 ，the android IPis 192.168.0.101，ping :
build APP：
notice，please
assign pc lan ip:192.168.0.100
build ok：
use USB connect phone and PC，download outputs\apk\debug\app-debug.apk to android，find app-debug.apk file in phome，click it to install and generate btrueantest app.
click btrueantest icon，run it:
get the process log , the following
shows App begining：
The following shows the latest Ap log
Use process log , break point ,
printing text|variable such ways，you can debug android APP.
Debugging and running both smoothly.
First ，embed linux device and host pc （include
bd.exe）at the same LAN：
host PC ip: 192.168.0.101
embed
device ip： 192.168.0.100
host PC
(192.168.0.101 ) ping embed linux device（192.168.0.100）
build，assign the host pc IP：192.168.0.101 , which have bd.exe.
Download
the target programe file to embed board：
runs embedtest.bin
get process log：
embedtest.bin crashed at btcpservice.c 38 , it encounters assert.
Insert a break point at [00084][listenimpl.c]，run again：
How to
correct the bug , can you complete it ?.
build：
according to MCU ram size，the default is middle（M），selecte it and continue：
build ok，burning D:\exer\uart1_interrupt\Obj\USART.axf to mcu
use Keil UVision tool ，clict the download icon to begin to burning.
connect mcu ：
use connmcu command
get process log：
insert a break point：
use uart tool ，look the output：
This is the uart output data of STM32 program.
Modify mcu space , the following shows a sample of CCS mcu:
file : F28062.cmd
(1)
Delete FLASHH FLASHG
FLASHF , combine it to FLASHE
(2)
Delete RAML3 , combine it to RAML2
(3) Map
address sections to big FLASH or big RAM
After do these , FLASH and RAM sections became more large. Build mcu will OK now.
CCS build OK UI:
