Thanks for that screenshot, that answers a lot of my questions.
Unfortunately I’m still not seeing any CAN traffic in SavvyCAN. Which revision of M2RET are you using? I’m using https://github.com/collin80/M2RET/commit/f56b2f3bcc029ce55e72a54f8043dc1e40f5ea31, the latest in master.
Is there anything I need to do to start capturing frames on either the M2 or in SavvyCAN or is it supposed to just start capturing as soon as I connect?
Yep, It should just start dumping CAN data once you are connected. I’d start with just CAN0 and leave CAN1 disabled - select the port and hit update - it should just start dumping data. I’ll get in touch with Collin to see if he can join the conversation.
Collin just responded a couple hours ago in the OpenGarage slack that he will be trying to get caught up on the M2 stuff as soon as possible. He has been tied up RE Tesla S vehicles so has been splitting time. Hopefully this means in the next week or so stuff will start clicking.
I will see if it works in my vehicle with the latest version running.
Using Windows 10 on my laptop.
My vehicle worked fine with mine with no issues. Selected just Can0 at 500000 baud and connected. Started displaying data with no issues.
Used the code from Collins repositories as of 4/16.
Also used latest Arduino IDE and used the method in the Macchina video to install the Macchina pack.
For comparison I loaded just the SavvyCan on my laptop and nothing else and it ran fine. I only have the IDE on my desktop at this time.
Rodney
I pulled down the latest as of 4/18 and everything is working now. Collin’s latest commit had a few bug fixes. I’m not sure if those are what got things working or just starting fresh did it, but I’m good now.
Thanks everyone for the help. Now to decode some CAN frames!
Yeah, sorry, the documentation is lacking. The problem open source developers (well, any developers) face is that everything takes time. I can either fix bugs and add features or document the features that already exist. In a larger company you have some people who code and some people who write documentation so that makes it easier.
But, recently I did have someone who has used the program for months but yet didn’t know about a pretty basic feature. That kind of clued me in that there are only about 2, maybe 3 people who know about most of the features in SavvyCAN. That’s no good. I’ll have to try to prioritize more videos to explain things. I once got into writing help file documentation too.
No problem. We should appreciate that you have been improving the SavvyCan continuously. Now, I am watching some of your old videos in the youtube (https://www.youtube.com/watch?v=JPcrpQwnNJc).
I am also wondering if it is possible to record GPS signal connected through the 26 pin header while using M2RET. Now, I can capture frames using M2RET and view using SavvyCan.
Well, I suppose it’d be possible to capture GPS input but the firmware isn’t coded to read it so you’d have to add that. It doesn’t seem to be a super common request so it couldn’t be high up on my list of things to add at this point.
how do you get m2 and savvycan working? do i need to install anything onto the m2? and if i do how?
Yes but the docs on the macchina website do not show you how to install M2RET.
hey @kobyanthony - we’ll work on this and add it to the docs.
In the mean-time, Step 1: if you only want to use M2RET/SavvyCan, Collin was kind enough to create a script to flash M2 without compiling anything. Here is a link to that:
http://savvycan.com/M2RET_Flash.zip
You may need to install drivers for this to work. If you install the Arduino IDE, those drivers will come along with it.
Step 2: From there, install SavvyCan from one of the 4 links from http://savvycan.com/ below this heading:
Links to all of the binary versions (Updated Nov 09 2017 - Version 180)
Let us know if you get stuck.
Hi @josh,
I have tried the links you provided:
But it seems that I can flash the firmware into m2:
for file in /dev/tty.usbmodem*
do
stty -f $file 1200 cs8 cread clocal
done
./bossac -e -w -v -b M2RET.ino.bin
Device found on cu.usbmodem1411
Erase flash
Write 90936 bytes to flash
[==============================] 100% (356/356 pages)
Verify 90936 bytes of flash
[==============================] 100% (356/356 pages)
Verify successful
Set boot flash true
But I’ve tried to plug m2 into the ODBII under the dash, there isn’t any data send through. I’ve looked at the arduino serial monitor already, no data flow through at all. Maybe I did something wrong or is a faulty board 
Just got some data from the board,
But still, when I tried to connect it to my car, nothing else is showing up except the data in the device console.
