I am writing the software in UE4 and have the UE4duino plugin that allows communication to the Arduino. I can load test scripts and communication to the arduino works fine via this method. However once I load MultiWii to the Arduino I am unable to get any sort of response no matter what I feed it. So I went back to the Arduino IDE and opened the serial monitor to see if I can get anything that way. One of the sites I have been using for reference is this one here: http://smokey.odj.me/post/108535162320/ ... -can-track
Now I understand how the MSP message needs to be formatted (<preamble>,<direction>,<size>,<command>,<crc>) but I cannot find a way to send it to the Arduino to get a response back from MultiWii. In that page it gives the binary command that needs to be sent to the Arduino as a test which is:
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00100100 01001101 00111110 00000000 01101101 01101101
However when I paste that into the serial monitor of the arduino IDE I get nothing back. The Rx light blinks but no Tx. I also wrote a script in UE4 to send the data one octet at a time to no avail. Plenty of Rx blinks but no Tx.
At this point I really needed to see the data coming to and from the Arduino so I fired up the GUI and recorded everything coming over the COM port. Here is a snippet of the data:
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[11/06/2017 07:55:05] - Open port COM3 (C:\ProgramData\Oracle\Java\javapath\javaw.exe)
[11/06/2017 07:55:06] Written data (COM3)
24 4d 3c 00 64 64 24 4d 3c 00 74 74 24 4d 3c 00 $M<.dd$M<.tt$M<.
6f 6f 24 4d 3c 00 70 70 24 4d 3c 00 73 73 24 4d oo$M<.pp$M<.ss$M
3c 00 71 71 24 4d 3c 00 72 72 <.qq$M<.rr
[11/06/2017 07:55:06] Read data (COM3)
24 4d 3e 07 64 f0 0b 00 00 00 00 70 e8 24 4d 3e $M>.dð.....pè$M>
35 74 41 52 4d 3b 41 4e 47 4c 45 3b 48 4f 52 49 5tARM;ANGLE;HORI
5a 4f 4e 3b 4d 41 47 3b 47 50 53 20 48 4f 4d 45 ZON;MAG;GPS HOME
3b 47 50 53 20 48 4f 4c 44 3b 4d 49 53 53 49 4f ;GPS HOLD;MISSIO
4e 3b 4c 41 4e 44 3b 19 24 4d 3e 07 6f 5a 41 00 N;LAND;.$M>.oZA.
00 00 32 00 41 24 4d 3e 1e 70 21 1e 17 21 1e 17 ..2.A$M>.p!..!..
44 2d 00 40 19 18 0f 00 00 22 0e 35 19 21 53 5a D-.@.....".5.!SZ
0a 64 28 ff ff 00 00 00 27 24 4d 3e 08 73 03 05 .d(ÿÿ...'$M>.s..
06 02 07 08 09 0a 75 24 4d 3e 10 71 00 00 00 00 ......u$M>.q....
00 00 00 00 00 00 00 00 00 00 00 00 61 24 4d 3e ............a$M>
16 72 00 00 7e 04 3a 07 e8 03 00 00 00 00 00 00 .r..~.:.è.......
00 00 28 00 00 00 00 00 e0 ..(.....à
[11/06/2017 07:55:06] Written data (COM3)
24 4d 3c 00 65 65 24 4d 3c 00 66 66 24 4d 3c 00 $M<.ee$M<.ff$M<.
67 67 24 4d 3c 00 68 68 24 4d 3c 00 69 69 24 4d gg$M<.hh$M<.ii$M
3c 00 fe fe 24 4d 3c 00 6c 6c 24 4d 3c 00 6d 6d <.þþ$M<.ll$M<.mm
24 4d 3c 00 6a 6a 24 4d 3c 00 6b 6b 24 4d 3c 00 $M<.jj$M<.kk$M<.
6e 6e nn
[11/06/2017 07:55:06] Read data (COM3)
24 4d 3e 0b 65 f4 0a 00 00 0d 00 00 00 00 00 00 $M>.eô..........
9d 24 4d 3e 12 66 28 01 df 00 99 01 09 00 00 00 $M>.f(.ß.™.....
00 00 e3 ff e4 ff ff ff 14 24 4d 3e 10 67 dc 05 ..ãÿäÿÿÿ.$M>.gÜ.
dc 05 dc 05 dc 05 dc 05 dc 05 dc 05 e8 03 45 24 Ü.Ü.Ü.Ü.Ü.Ü.è.E$
4d 3e 10 68 e8 03 e8 03 e8 03 e8 03 e8 03 e8 03 M>.hè.è.è.è.è.è.
e8 03 e8 03 78 24 4d 3e 18 69 dc 05 dc 05 26 08 è.è.x$M>.iÜ.Ü.&.
dc 05 dc 05 dc 05 dc 05 dc 05 dc 05 dc 05 dc 05 Ü.Ü.Ü.Ü.Ü.Ü.Ü.Ü.
dc 05 86 24 4d 3e 08 fe 00 00 00 00 00 00 00 00 Ü.†$M>.þ........
f6 24 4d 3e 06 6c 07 01 a9 ff 90 00 aa 24 4d 3e ö$M>.l..©ÿ.ª$M>
06 6d 00 00 00 00 00 00 6b 24 4d 3e 10 6a 00 00 .m......k$M>.j..
00 00 00 00 00 00 00 00 00 00 00 00 00 00 7a 24 ..............z$
4d 3e 05 6b 00 00 00 00 00 6e 24 4d 3e 07 6e 00 M>.k.....n$M>.n.
00 00 00 00 00 00 69 ......i
Now it is obvious that the data coming to and from is the MSP but it didn't really help in coming any closer to getting any sort of response when I try sending a command myself. Is there anyone at all that can hopefully clarify how I need to send this command to the Arduino so that I can get any sort of response at all? Is using the Arduino IDE serial monitor useless in attempting this? Once I can get this nailed down I will definitely be making a YouTube video explaining exactly how to implement MSP