BACnet Protocol Stack / Discussion / Help: Help compiling (I am reletively noob-ish)

Hi Steve and team,

After cloning the master repo I cannot for the life of me get anything to compile.

I remember a few months ago I managed to get the demo apps to compile into .exe files for windows, but after cleaning my machine and re-cloning the repo I can't even do that. I remember I mucked around editing the makefiles directly, I'm sure that's the wrong way to go about it.

My ultimate goal is to get the Arduino Uno port working, then transition everything to a Microchip Studio project for AVR devices.

I have MinGW/MSYS2 installed, with a whole bunch of the w64_x86 packages/tool chains installed, and a whole bunch of pacman -Syu commands etc. to get everything up to date.

My PATH variable has C:\msys64\mingw64\include and C:\msys64\usr\include added.

The initial error was something about asm/types.h couldn't be found, but this was to do with the linux port which I don't car about at the moment, so just deleting that folder made that error go away.

Now I run build.bat from the bacnet-stack root, I get:

C:\Users\lance\OneDrive\Documents\GitHub\bacnet-stack>build.bat
Build with MinGW and MSYS: mingw.sourceforge.net
make -s -C ports/atmega168 clean
The system cannot find the path specified.
make -s -C ports/bdk-atxx4-mstp clean
The system cannot find the path specified.
make -s -C ports/at91sam7s clean
The system cannot find the path specified.
make -s -C ports/stm32f10x clean
The system cannot find the path specified.
make -s -C ports/stm32f4xx clean
The system cannot find the path specified.
make -s -C src clean
make -s -C apps clean
process_begin: CreateProcess(NULL, uname -s, ...) failed.
make -s -C apps/router clean
make -s -C apps/router-ipv6 clean
make -s -C apps/router-mstp clean
make -s -C apps/gateway clean
make -s -C ports/lwip clean
make -s -C test clean
rm -rf ./build
make -s -C apps all
process_begin: CreateProcess(NULL, uname -s, ...) failed.
In file included from C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bip-init.c:46:
C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/mstimer-init.c:32:
C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/datetime-init.c:18:
C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from main.c:49:
C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/src/bacnet/basic/object/client/device-client.c:35:
C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/src/bacnet/basic/object/client/device-client.o:device-client.:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/apps/lib/libbacnet.a(bip-init.o):bip-init.c:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/apps/lib/libbacnet.a(datetime-init.o):datetime-init.:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
collect2.exe: error: ld returned 1 exit status
make[2]: *** [bacrp.exe] Error 1
make[1]: *** [readprop.all] Error 2
make: *** [apps] Error 2

C:\Users\lance\OneDrive\Documents\GitHub\bacnet-stack>

if I just run directly the command make clean all I get:

C:\Users\lance\OneDrive\Documents\GitHub\bacnet-stack>make clean all
make -s -C ports/atmega168 clean
The system cannot find the path specified.
make -s -C ports/bdk-atxx4-mstp clean
The system cannot find the path specified.
make -s -C ports/at91sam7s clean
The system cannot find the path specified.
make -s -C ports/stm32f10x clean
The system cannot find the path specified.
make -s -C ports/stm32f4xx clean
The system cannot find the path specified.
make -s -C src clean
make -s -C apps clean
process_begin: CreateProcess(NULL, uname -s, ...) failed.
make -s -C apps/router clean
make -s -C apps/router-ipv6 clean
make -s -C apps/router-mstp clean
make -s -C apps/gateway clean
make -s -C ports/lwip clean
make -s -C test clean
rm -rf ./build
make -s -C apps all
process_begin: CreateProcess(NULL, uname -s, ...) failed.
make[2]: *** No rule to make target `/bip-init.o', needed by `C:/Users/lance/OneDrive/Documents/GitHub/bacnet-stack/apps/lib/libbacnet.a'.  Stop.
make[1]: *** [lib.all] Error 2
make: *** [apps] Error 2

C:\Users\lance\OneDrive\Documents\GitHub\bacnet-stack>

but I assume that's something to do with not setting the BACNET_PORT variable, as the .bat does?

Further, I can't even see how you would compile the arduino port. Would you please be able to point me in the right direction here?

Do I need to setup some config files or something?

Do I have MinGW installed incorrectly or some packages missing? Maybe I should try MinGW32 instead of 64?

Sorry I'm a bit of a noob, I'm used to a nice IDE and just hitting the "upload" button... hahaha

Steve Karg - 2022-05-09

The apps/Makefile does some substitution for the targeted ports/ folder files, and needs a bit of help to compile on a native setup (can also be used to cross-compile). I created a 'win32' target in the root makefile to accomplish this on Windows. Traditionally, Makefile are used on POSIX systems (Linux, BSD, etc), so the default 'make' without tweaking only works on POSIX.

To build the example command line applications for BACnet/IP under Windows use git bash.
git bash: https://git-scm.com/downloads
$ make win32

Unfortunately, I have not kept the Makefile builds working under Windows command line and Power Shell (not sure what I broke from 0.8.x branch)

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Steve Karg - 2022-05-09

re: arduino port - hasn't been kept up to date since it's contribution by Miguel Fernandes - sorry!

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Hi Steve,

Thanks for your reply, I appreciate you taking the time to answer my question.

Unfortunately I could not get the Git bash shell to do anything different from CMD.exe or MinGW64 on my machine - still the same complaint about timezone being declared in multiple places.

Then I faffed around with the PATH variable, and removed the mingw64\bin folder... now "make" is pointing to usr\bin\make.exe? Then I get the following gobbledegook:

$ make win32
make BACNET_PORT=win32 -s -C apps all
In file included from /C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/src/bacnet/bacstr.c:40:
/C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/src/bacnet/bacstr.c: In function ‘octetstring_init_ascii_hex’:
/C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/src/bacnet/bacstr.c:1014:39: warning: array subscript has type ‘char’ [-Wchar-subscripts]
 1014 |                 if (!isalnum(ascii_hex[index])) {
      |                              ~~~~~~~~~^~~~~~~
In file included from /usr/include/w32api/winsock2.h:56,
                 from /C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:49,
                 from main.c:49:
/usr/include/w32api/psdk_inc/_fd_types.h:100:2: warning: #warning "fd_set and associated macros have been defined in sys/types.      This can cause runtime problems with W32 sockets" [-Wcpp]
  100 | #warning "fd_set and associated macros have been defined in sys/types.  \
      |  ^~~~~~~
In file included from /C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:49,
                 from main.c:49:
/usr/include/w32api/winsock2.h:1031:34: error: conflicting types for ‘select’; have ‘int(int,  fd_set *, fd_set *, fd_set *, struct __ms_timeval * const)’
 1031 |   WINSOCK_API_LINKAGE int WSAAPI select(int nfds,fd_set *readfds,fd_set *writefds,fd_set *exceptfds,const PTIMEVAL timeout);
      |                                  ^~~~~~
In file included from /usr/include/sys/types.h:50,
                 from /usr/include/stdio.h:61,
                 from main.c:28:
/usr/include/sys/select.h:76:5: note: previous declaration of ‘select’ with type ‘int(int,  fd_set *, fd_set *, fd_set *, struct timeval *)’
   76 | int select __P ((int __n, fd_set *__readfds, fd_set *__writefds,
      |     ^~~~~~
In file included from main.c:49:
/C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:62: warning: ignoring ‘#pragma warning ’ [-Wunknown-pragmas]
   62 | #pragma warning(disable : 4996)
      |
/C/users/lance/OneDrive/Documents/GitHub/bacnet-stack/ports/win32/bacport.h:64: warning: ignoring ‘#pragma comment ’ [-Wunknown-pragmas]
   64 | #pragma comment(lib, "winmm.lib")
      |
make[2]: *** [Makefile:27: main.o] Error 1
make[1]: *** [Makefile:163: readprop.all] Error 2
make: *** [Makefile:18: win32] Error 2

So I'm assuming I'm just an idiot for trying to use gcc on Windows? Maybe I'll get my act together and get a Linux dual boot going at some point... haha

However, on a more positive note I was able to compile the atmega168 port:

$ make atmega168
make -s -C ports/atmega168 clean all
../../src/bacnet/bacreal.c: In function 'encode_bacnet_double':
../../src/bacnet/bacreal.c:180:31: warning: 'my_data.byte[7]' is used uninitialized in this function [-Wuninitialized]
         apdu[0] = my_data.byte[7];
                   ~~~~~~~~~~~~^~~
../../src/bacnet/bacreal.c:181:31: warning: 'my_data.byte[6]' is used uninitialized in this function [-Wuninitialized]
         apdu[1] = my_data.byte[6];
                   ~~~~~~~~~~~~^~~
../../src/bacnet/bacreal.c:182:31: warning: 'my_data.byte[5]' is used uninitialized in this function [-Wuninitialized]
         apdu[2] = my_data.byte[5];
                   ~~~~~~~~~~~~^~~
../../src/bacnet/bacreal.c:183:31: warning: 'my_data.byte[4]' is used uninitialized in this function [-Wuninitialized]
         apdu[3] = my_data.byte[4];
                   ~~~~~~~~~~~~^~~
device.c: In function 'Device_Read_Property':
device.c:315:9: warning: case value '513' not in enumerated type 'BACNET_PROPERTY_ID' {aka 'enum <anonymous>'} [-Wswitch]
         case (BACNET_PROPERTY_ID)513:
         ^~~~
device.c:308:9: warning: case value '9600' not in enumerated type 'BACNET_PROPERTY_ID' {aka 'enum <anonymous>'} [-Wswitch]
         case (BACNET_PROPERTY_ID)9600:
         ^~~~
device.c: In function 'Device_Write_Property':
device.c:435:9: warning: case value '9600' not in enumerated type 'BACNET_PROPERTY_ID' {aka 'enum <anonymous>'} [-Wswitch]
         case (BACNET_PROPERTY_ID)9600:
         ^~~~

   text    data     bss     dec     hex filename
  20246     114     347   20707    50e3 bacnet.elf

There is also a nice Atmel project file there that miraculously opened on my machine OK. I was able to get the project building & writing to my Arduino Uno using avrdude. I have it half working (using "MS/TP", except really it's just a USB cable to the Uno... I guess the Uno's USB chip kind of takes the place of a serial-to-COM port adapter in this case, haha) - the device is discovered but I can't read any properties & Yabe reports a lot of garbage data... see attached image if you're interested.

I think from here I'll be able to bring in the IP datalink & WizNet5100 libraries & get it working on BACnet/IP myself :)

I may come back and ask you for help at some point, if that's OK!

Cheers
Lance

YabeDiscoveredDevice.png

Steve Karg - 2022-05-12

Sometimes I make changes in my environment and forget that others cannot follow that. I checked my git bash .bashrc file:

$ cat ~/.bashrc alias make=mingw32-make.exe PATH=/c/MinGW/bin:$PATH export MAKE=mingw32-make.exe export CC=mingw32-gcc.exe export OBJCOPY=objcopy.exe export AR=ar.exe export SIZE=size.exe

I probably ended up force-using mingw32 after spending days trying to get mingw64 to do the same. Does that get win32 to compile for you?
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Steve Karg - 2022-05-12

I updated build.bat to compile using MinGW32 in Windows Command Prompt.
I update build.sh to compile using MinGW32 in git-bash environment.
https://sourceforge.net/p/bacnet/src/ci/1c1b6762472d89851ebf7d9bd15e99d21c8f5de6/

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Ah ha. From Microsoft's documentation: "You cannot run a doskey macro from a batch program"

Not to worry, what I did here is make a copy of mingw32-make.exe and call it make.exe.

Then I had to modify the files as follows - adding the x86_64-w64- prefix to the binaries:

build.bat:

@echo off
echo Build with MinGW32 and MSYS: mingw.sourceforge.net
set PATH=C:\msys64\mingw64\bin;%PATH%
rem assumes rm, cp, size are already in path
set CC=x86_64-w64-mingw32-gcc.exe
set AR=x86_64-w64-mingw32-gcc-ar.exe
set NM=x86_64-w64-mingw32-gcc-nm.exe
set OBJCOPY=objcopy.exe
set SIZE=size.exe
set MAKE=make.exe

rem doskey make=mingw32-make.exe $*

make BACNET_PORT=win32 clean
make BACNET_PORT=win32 BUILD=release clean all

rem Build for MinGW debug
rem make BACNET_PORT=win32 BUILD=debug clean all

rem Build for MinGW MS/TP
rem make BACNET_PORT=win32 BACDL_DEFINE=-DBACDL_MSTP=1 clean all
rem make BACNET_PORT=win32 BACDL_DEFINE=-DBACDL_BIP6=1 clean all

rem On Linux, install mingw32 and use this:
rem make BACNET_PORT=win32 CC=i586-mingw32msvc-gcc AR=i586-mingw32msvc-ar clean all

build.sh:

#!/bin/sh

alias make=mingw32-make.exe
PATH=/c/msys64/mingw64/bin:$PATH
export MAKE=mingw32-make.exe
#export CC=mingw32-gcc.exe
export OBJCOPY=objcopy.exe
#export AR=ar.exe
#export SIZE=size.exe
export CC=x86_64-w64-mingw32-gcc.exe
export AR=x86_64-w64-mingw32-gcc-ar.exe
export NM=x86_64-w64-mingw32-gcc-nm.exe

#make clean
#make all

make BACNET_PORT=win32 clean
make BACNET_PORT=win32 BUILD=release clean all

It seems like I got a whole lot further this time! However, after half of the .o files were created, it STILL crashed... don't panic - keep reading! ...with the following error, again, complaining apout multiple definitions of timezone:

lance.t@WGTNLAP06 MINGW64 /c/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack
$ ./build.sh
mingw32-make.exe -s -C ports/atmega168 clean
mingw32-make.exe -s -C ports/bdk-atxx4-mstp clean
mingw32-make.exe -s -C ports/at91sam7s clean
mingw32-make.exe -s -C ports/stm32f10x clean
mingw32-make.exe -s -C ports/stm32f4xx clean
mingw32-make.exe -s -C src clean
mingw32-make.exe -s -C apps clean
mingw32-make.exe -s -C apps/router clean
mingw32-make.exe -s -C apps/router-ipv6 clean
mingw32-make.exe -s -C apps/router-mstp clean
mingw32-make.exe -s -C apps/gateway clean
mingw32-make.exe -s -C ports/lwip clean
mingw32-make.exe -s -C test clean
rm -rf ./build
mingw32-make.exe -s -C ports/atmega168 clean
mingw32-make.exe -s -C ports/bdk-atxx4-mstp clean
mingw32-make.exe -s -C ports/at91sam7s clean
mingw32-make.exe -s -C ports/stm32f10x clean
mingw32-make.exe -s -C ports/stm32f4xx clean
mingw32-make.exe -s -C src clean
mingw32-make.exe -s -C apps clean
mingw32-make.exe -s -C apps/router clean
mingw32-make.exe -s -C apps/router-ipv6 clean
mingw32-make.exe -s -C apps/router-mstp clean
mingw32-make.exe -s -C apps/gateway clean
mingw32-make.exe -s -C ports/lwip clean
mingw32-make.exe -s -C test clean
rm -rf ./build
mingw32-make.exe -s -C apps all
In file included from C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bip-init.c:46:
C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/mstimer-init.c:32:
C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/datetime-init.c:18:
C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from main.c:49:
C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
In file included from C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/src/bacnet/basic/object/client/device-client.c:35:
C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/ports/win32/bacport.h:76:10: warning: 'timezone' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
   76 | long int timezone;
      |          ^~~~~~~~
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/src/bacnet/basic/object/client/device-client.o:device-client.:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/apps/lib/libbacnet.a(bip-init.o):bip-init.c:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack/apps/lib/libbacnet.a(datetime-init.o):datetime-init.:(.data$timezone+0x0): multiple definition of `timezone'; main.o:main.c:(.data$timezone+0x0): first defined here
collect2.exe: error: ld returned 1 exit status
mingw32-make[2]: *** [Makefile:19: bacrp.exe] Error 1
mingw32-make[1]: *** [Makefile:163: readprop.all] Error 2
mingw32-make: *** [Makefile:42: apps] Error 2

So actually, the solution was to comment out the line long int timezone; in bacport.h and datetime-init.h in the win32 port folder! Judging by the comments around that line, it was added in as a hack to get around some error with time.h, which now appears fixed.

lance.t@WGTNLAP06 MINGW64 /c/users/lance.t/source/GitHub/BACSTACK_C/bacnet-stack
$ ./build.sh
mingw32-make.exe -s -C ports/atmega168 clean
mingw32-make.exe -s -C ports/bdk-atxx4-mstp clean
mingw32-make.exe -s -C ports/at91sam7s clean
mingw32-make.exe -s -C ports/stm32f10x clean
mingw32-make.exe -s -C ports/stm32f4xx clean
mingw32-make.exe -s -C src clean
mingw32-make.exe -s -C apps clean
mingw32-make.exe -s -C apps/router clean
mingw32-make.exe -s -C apps/router-ipv6 clean
mingw32-make.exe -s -C apps/router-mstp clean
mingw32-make.exe -s -C apps/gateway clean
mingw32-make.exe -s -C ports/lwip clean
mingw32-make.exe -s -C test clean
rm -rf ./build
mingw32-make.exe -s -C ports/atmega168 clean
mingw32-make.exe -s -C ports/bdk-atxx4-mstp clean
mingw32-make.exe -s -C ports/at91sam7s clean
mingw32-make.exe -s -C ports/stm32f10x clean
mingw32-make.exe -s -C ports/stm32f4xx clean
mingw32-make.exe -s -C src clean
mingw32-make.exe -s -C apps clean
mingw32-make.exe -s -C apps/router clean
mingw32-make.exe -s -C apps/router-ipv6 clean
mingw32-make.exe -s -C apps/router-mstp clean
mingw32-make.exe -s -C apps/gateway clean
mingw32-make.exe -s -C ports/lwip clean
mingw32-make.exe -s -C test clean
rm -rf ./build
mingw32-make.exe -s -C apps all
   text    data     bss     dec     hex filename
 213540  425556    3168  642264   9ccd8 bacrp.exe
   text    data     bss     dec     hex filename
 213776  521364    3168  738308   b4404 bacwp.exe
   text    data     bss     dec     hex filename
 212016  425616    3168  640800   9c720 bacarf.exe
   text    data     bss     dec     hex filename
 210248  427132    3168  640548   9c624 bacawf.exe
   text    data     bss     dec     hex filename
 209392  425492    3168  638052   9bc64 bacrd.exe
   text    data     bss     dec     hex filename
 356692 1229216    3168 1589076  183f54 bacserv.exe
   text    data     bss     dec     hex filename
 210976  425524    3168  639668   9c2b4 bacdcc.exe
   text    data     bss     dec     hex filename
 209720  425492    3168  638380   9bdac bacwh.exe
   text    data     bss     dec     hex filename
 211248  425688    3168  640104   9c468 bacwi.exe
   text    data     bss     dec     hex filename
 209184  425432    3168  637784   9bb58 baciam.exe
   text    data     bss     dec     hex filename
 215020  423832    3168  642020   9cbe4 bacucov.exe
   text    data     bss     dec     hex filename
 218152  425556    3168  646876   9dedc bacscov.exe
   text    data     bss     dec     hex filename
 212416  426168    3168  641752   9cad8 bacts.exe
   text    data     bss     dec     hex filename
 244812  426576    3168  674556   a4afc bacepics.exe
   text    data     bss     dec     hex filename
 217088  425524    3168  645780   9da94 bacrpm.exe
   text    data     bss     dec     hex filename
 214744  425652    3168  643564   9d1ec bacrr.exe
   text    data     bss     dec     hex filename
 215680  425540    3168  644388   9d524 bacwpm.exe
   text    data     bss     dec     hex filename
 213016  522804    3168  738988   b46ac bacupt.exe
   text    data     bss     dec     hex filename
 211524  433844    3168  648536   9e558 bacge.exe
   text    data     bss     dec     hex filename
 215868  423860    3168  642896   9cf50 bacuevent.exe
   text    data     bss     dec     hex filename
 208072  423896    3168  635136   9b100 bacabort.exe
   text    data     bss     dec     hex filename
 208180  423896    3168  635244   9b16c bacerror.exe
   text    data     bss     dec     hex filename
 219868  425524    3168  648560   9e570 bacevent.exe
   text    data     bss     dec     hex filename
 213808  425524    3168  642500   9cdc4 bacackalarm.exe
   text    data     bss     dec     hex filename
 208884  425460    3168  637512   9ba48 bacwir.exe
   text    data     bss     dec     hex filename
 207884  424088    3168  635140   9b104 baciamr.exe
   text    data     bss     dec     hex filename
 209248  425460    3168  637876   9bbb4 bacinitr.exe
   text    data     bss     dec     hex filename
 207284  425428    3168  635880   9b3e8 bacrbdt.exe
   text    data     bss     dec     hex filename
 207252  425428    3168  635848   9b3c8 bacrfdt.exe
   text    data     bss     dec     hex filename
 208024  428500    3168  639692   9c2cc bacwbdt.exe
   text    data     bss     dec     hex filename
 111988   30636    3168  145792   23980 mstpcap.exe
   text    data     bss     dec     hex filename
  36632    8788    2912   48332    bccc mstpcrc.exe

using set BACNET_IFACE=xxx.xxx.xxx.xxx and baciam.exe 1111 from command prompt, I see the entry pop into Yabe, as expected.

Thanks for your help!

Lance Tollenaar - 2022-05-29

Update for those interested,

Got BACnet MS/TP working on an Arduino Uno using a Microchip Studio project with AVRDUDE setup as an External Tool, and the ATMega168 port in the ports folder.

Without an RS485 line driver there is garbage on the data lines, as the code sends 4 octets of 0xFF (plus 4x start & 4x stop bits) with the RS485 TX Enable pin LOW in order to "busy wait" for exactly 40 bit times.

There was also a bug that stopped the PROP_OBJECT_LIST from working correctly - the reference to Handler_Transmit_Buffer was not being used at all inside the Encode_Property_APDU method. NOTE: This specifically refers to the h_rp.c file in the ATMega168 port folder.

/* most cases will be error */ ack_len = rp_ack_encode_apdu_init( &Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, &data); /* FIXME: add buffer len as passed into function or use smart buffer */ data.error_class = ERROR_CLASS_OBJECT; data.error_code = ERROR_CODE_UNKNOWN_OBJECT; property_len = Encode_Property_APDU( &Handler_Transmit_Buffer[pdu_len + ack_len], &data);

Works when changed to:

/* most cases will be error */ ack_len = rp_ack_encode_apdu_init( &Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, &data); /* configure our storage */ data.application_data = &Handler_Transmit_Buffer[pdu_len + ack_len]; /* FIXME: add buffer len as passed into function or use smart buffer */ data.error_class = ERROR_CLASS_OBJECT; data.error_code = ERROR_CODE_UNKNOWN_OBJECT; property_len = Encode_Property_APDU(&data);

Screenshot shows the device being browsed & polled in Yabe.

Working on Arduino Uno.png
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Steve Karg - 2022-08-14
  
  Thank you for posting the resulting solution! I pushed a fix into ports/atmega168 today.
  https://github.com/bacnet-stack/bacnet-stack/pull/323
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

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